260 results on '"Brotons, L"'
Search Results
52. Putting pyrodiversity to work for animal conservation
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Kelly, LT, Brotons, L, McCarthy, MA, Kelly, LT, Brotons, L, and McCarthy, MA
- Published
- 2017
53. ECOLOGY Using fire to promote biodiversity
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Kelly, LT, Brotons, L, Kelly, LT, and Brotons, L
- Abstract
Biodiversity can benefit from fires tailored to suit particular ecosystems and species
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- 2017
54. Global scenarios for biodiversity need to better integrate climate and land use change
- Author
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Titeux, Nicolas, Henle, Klaus, Mihoub, Jean-Baptiste, Regos, A., Geijzendorffer, I.R., Cramer, W., Verburg, P.H., Brotons, L., Titeux, Nicolas, Henle, Klaus, Mihoub, Jean-Baptiste, Regos, A., Geijzendorffer, I.R., Cramer, W., Verburg, P.H., and Brotons, L.
- Abstract
no abstract
- Published
- 2017
55. The need for large-scale distribution data to estimate regional changes in species richness under future climate change
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Titeux, Nicolas, Maes, D., Van Daele, T., Onkelinx, T., Heikkinen, R.K., Romo, H., García-Barros, E., Munguira, M.L., Thuiller, W., van Swaay, C.A.M., Schweiger, Oliver, Settele, Josef, Harpke, Alexander, Wiemers, Martin, Brotons, L., Luoto, M., Titeux, Nicolas, Maes, D., Van Daele, T., Onkelinx, T., Heikkinen, R.K., Romo, H., García-Barros, E., Munguira, M.L., Thuiller, W., van Swaay, C.A.M., Schweiger, Oliver, Settele, Josef, Harpke, Alexander, Wiemers, Martin, Brotons, L., and Luoto, M.
- Abstract
AimSpecies distribution models built with geographically restricted data often fail to capture the full range of conditions experienced by species across their entire distribution area. Using such models to predict distribution shifts under future environmental change may, therefore, produce biased projections. However, restricted-scale models have the potential to include a larger sample of taxa for which distribution data are available and to provide finer-resolution projections that are better applied to conservation planning than the forecasts of broad-scale models. We examine the circumstances under which the projected shifts in species richness patterns derived from restricted-scale and broad-scale models are most likely to be similar.LocationEurope.MethodsThe distribution of butterflies in Finland, Belgium/Netherlands and Spain was modelled based on restricted-scale (local) and broad-scale (continental) distribution and climate data. Both types of models were projected under future climate change scenarios to assess potential changes in species richness.ResultsIn Finland, species richness was projected to increase strongly based on restricted-scale models and to decrease slightly with broad-scale models. In Belgium/Netherlands, restricted-scale models projected a larger decrease in richness than broad-scale models. In Spain, both models projected a slight decrease in richness. We obtained similar projections based on restricted-scale and broad-scale models only in Spain because the climatic conditions available here covered the warm part of the distributions of butterflies better than in Finland and Belgium/Netherlands.Main conclusionsRestricted-scale models that fail to capture the warm part of species distributions produce biased estimates of future changes in species richness when projected under climatic conditions with no modern analogue in the study area. We recommend the use of distribution data beyond the boundaries of the study area to capture the pa
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- 2017
56. A suite of essential biodiversity variables for detecting critical biodiversity change
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Schmeller, Dirk Sven, Weatherdon, L.V., Loyau, Adeline, Bondeau, A., Brotons, L., Brummitt, N., Geijzendorffer, I.R., Haase, P., Kuemmerlen, M., Martin, C.S., Mihoub, Jean-Baptiste, Rocchini, D., Saarenmaa, H., Stoll, S., Regan, E.C., Schmeller, Dirk Sven, Weatherdon, L.V., Loyau, Adeline, Bondeau, A., Brotons, L., Brummitt, N., Geijzendorffer, I.R., Haase, P., Kuemmerlen, M., Martin, C.S., Mihoub, Jean-Baptiste, Rocchini, D., Saarenmaa, H., Stoll, S., and Regan, E.C.
- Abstract
Key global indicators of biodiversity decline, such as the IUCN Red List Index and the Living Planet Index, have relatively long assessment intervals. This means they, due to their inherent structure, function as late-warning indicators that are retrospective, rather than prospective. These indicators are unquestionably important in providing information for biodiversity conservation, but the detection of early-warning signs of critical biodiversity change is also needed so that proactive management responses can be enacted promptly where required. Generally, biodiversity conservation has dealt poorly with the scattered distribution of necessary detailed information, and needs to find a solution to assemble, harmonize and standardize the data. The prospect of monitoring essential biodiversity variables (EBVs) has been suggested in response to this challenge. The concept has generated much attention, but the EBVs themselves are still in development due to the complexity of the task, the limited resources available, and a lack of long-term commitment to maintain EBV data sets. As a first step, the scientific community and the policy sphere should agree on a set of priority candidate EBVs to be developed within the coming years to advance both large-scale ecological research as well as global and regional biodiversity conservation. Critical ecological transitions are of high importance from both a scientific as well as from a conservation policy point of view, as they can lead to long-lasting biodiversity change with a high potential for deleterious effects on whole ecosystems and therefore also on human well-being. We evaluated candidate EBVs using six criteria: relevance, sensitivity to change, generalizability, scalability, feasibility, and data availability and provide a literature-based review for eight EBVs with high sensitivity to change. The proposed suite of EBVs comprises abundance, allelic diversity, body mass index, ecosystem heterogeneity, phenology, range
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- 2017
57. Erratum: Setting temporal baselines for biodiversity: the limits of available monitoring data for capturing the full impact of anthropogenic pressures
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Mihoub, Jean-Baptiste, Henle, Klaus, Titeux, N., Brotons, L., Brummitt, N.A., Schmeller, Dirk Sven, Mihoub, Jean-Baptiste, Henle, Klaus, Titeux, N., Brotons, L., Brummitt, N.A., and Schmeller, Dirk Sven
- Published
- 2017
58. Setting temporal baselines for biodiversity: the limits of available monitoring data for capturing the full impact of anthropogenic pressures
- Author
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Mihoub, Jean-Baptiste, Henle, Klaus, Titeux, N., Brotons, L., Brummitt, N.A., Schmeller, Dirk Sven, Mihoub, Jean-Baptiste, Henle, Klaus, Titeux, N., Brotons, L., Brummitt, N.A., and Schmeller, Dirk Sven
- Abstract
Temporal baselines are needed for biodiversity, in order for the change in biodiversity to be measured over time, the targets for biodiversity conservation to be defined and conservation progress to be evaluated. Limited biodiversity information is widely recognized as a major barrier for identifying temporal baselines, although a comprehensive quantitative assessment of this is lacking. Here, we report on the temporal baselines that could be drawn from biodiversity monitoring schemes in Europe and compare those with the rise of important anthropogenic pressures. Most biodiversity monitoring schemes were initiated late in the 20th century, well after anthropogenic pressures had already reached half of their current magnitude. Setting temporal baselines from biodiversity monitoring data would therefore underestimate the full range of impacts of major anthropogenic pressures. In addition, biases among taxa and organization levels provide a truncated picture of biodiversity over time. These limitations need to be explicitly acknowledged when designing management strategies and policies as they seriously constrain our ability to identify relevant conservation targets aimed at restoring or reversing biodiversity losses. We discuss the need for additional research efforts beyond standard biodiversity monitoring to reconstruct the impacts of major anthropogenic pressures and to identify meaningful temporal baselines for biodiversity.
- Published
- 2017
59. Potencial de las imágenes UAV como datos de verdad terreno para la clasificación de la severidad de quema de imágenes Landsat: aproximaciones a un producto útil para la gestión post incendio
- Author
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Pla, M., Duane, A., Brotons, L., Pla, M., Duane, A., and Brotons, L.
- Abstract
Revista oficial de la Asociación Española de Teledetección, [EN] Mapping fire severity is determinant to understand landscape evolution after a wildfire and provides useful information for decision making during post fire management. Quantitative fire severity mapping from relative changes in Normalized Burn Ratio index (RdNBR) is not actually being incorporated into decision making processes, being more useful the categorization in severity levels (high, moderate and low). However, the most common mapping severity methodologies based on the definition of RdNBR thresholds from field information are not always possible due to lack of field data or because the published thresholds are unsatisfactory in new regions. The boom in the use of UAVs (Unmanned Aerial Vehicle) has raised these platforms as potential tools for validation of remote sensing data. This paper presents the potential of UAVs as ground truth information in forest fires. From the photointerpretation of high resolution RGB images, the Aerial Severity Proportion Index (ASPI) has been created. Non-linear regression models between RdNBR and ASPI allows to delimitate of thresholds for the classification of Landsat images and to obtain qualitative severity maps. Validation with random points presents a kappa index of 0,5 and a relative accuracy of 70,8%. Therefore, UAV images become a very useful tool for wildfire severity mapping and for fill the gap between remote sensing information and expensive field ground campaigns., [ES] La cuantificación de la severidad de los incendios forestales es determinante para conocer la evolución del paisaje después de un incendio forestal y provee información de gran utilidad frente a la toma de decisiones en la gestión post incendio. La cartografía cuantitativa de severidad de incendios a partir de cambios relativos del índice Normalized Burn Ratio (RdNBR) no está siendo realmente incorporada en los procesos de toma de decisiones, siendo más utilizada la categorización en niveles de severidad (alta, mediana y baja). Sin embargo, las clasificaciones de severidad más comunes, basadas en la definición de umbrales de corte de RdNBR a partir de información de campo, no son siempre posibles por falta de datos de campo o bien porque los umbrales publicados resultan poco satisfactorios en localizaciones distintas a las de su calibración. El auge del uso de UAVs (Unmaned Aerial Vehicle) ha planteado estas plataformas como posible herramienta para la validación de información de satélite. En el presente trabajo se presenta la potencialidad de los UAV como información de verdad terreno en incendios forestales. A partir de la fotointerpretación de imágenes RGB de alta resolución se ha creado el índice ASPI (Aerial Severity Proportion Index), el cual, a partir de modelos de regresión no lineales con el índice RdNBR, permite delimitar umbrales para la clasificación de las imágenes Landsat y obtener un mapa cualitativo de severidad. La validación de los modelos de regresión entre RdNDR y ASPI a partir de puntos al azar muestra un índice kappa de 0,5 con un acierto relativo del 70,8%. Por lo tanto, las imágenes UAV son una herramienta muy útil para la clasificación de la severidad de incendios forestales y para rellenar la brecha existente entre la información proveniente de imágenes de satélite y las costosas campañas de campo.
- Published
- 2017
60. The methodological assessment report on scenarios and models of biodiversity and ecosystem services - summary for policymakers
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Ferrier, S., Ninan, K. N., Leadley, P., Alkemade, R., Acosta, L. A., Akçakaya, H. R., Brotons, L., Cheung, W., Christensen, V., Harhash, K. A., Kabubo Mariara, J., Lundquist, C., Obersteiner, M., Pereira, H., Peterson, G., Pichs Madruga, R., Ravindranath, N. H., Rondinini, Carlo, and Wintle, B.
- Published
- 2016
61. Global change research in MTEs
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Doblas‐Miranda, E, Martínez‐Vilalta, J, Lloret, F, Álvarez, A, Ávila, A, Bonet, FJ, Brotons, L, Castro, J, Yuste, J Curiel, Díaz, M, Ferrandis, P, García‐Hurtado, E, Iriondo, JM, Keenan, TF, Latron, J, Llusià, J, Loepfe, L, Mayol, M, Moré, G, Moya, D, Peñuelas, J, Pons, X, Poyatos, R, Sardans, J, Sus, O, Vallejo, VR, Vayreda, J, and Retana, J
- Subjects
land-use change ,water reserves ,climate change ,research gaps ,Ecology ,Life on Land ,atmosphere-biosphere interaction ,forest management ,factors interaction ,fire regime ,Assessment ,biodiversity - Abstract
Aim: Mediterranean terrestrial ecosystems serve as reference laboratories for the investigation of global change because of their transitional climate, the high spatiotemporal variability of their environmental conditions, a rich and unique biodiversity and a wide range of socio-economic conditions. As scientific development and environmental pressures increase, it is increasingly necessary to evaluate recent progress and to challenge research priorities in the face of global change. Location: Mediterranean terrestrial ecosystems. Methods: This article revisits the research priorities proposed in a 1998 assessment. Results: A new set of research priorities is proposed: (1) to establish the role of the landscape mosaic on fire-spread; (2) to further research the combined effect of different drivers on pest expansion; (3) to address the interaction between drivers of global change and recent forest management practices; (4) to obtain more realistic information on the impacts of global change and ecosystem services; (5) to assess forest mortality events associated with climatic extremes; (6) to focus global change research on identifying and managing vulnerable areas; (7) to use the functional traits concept to study resilience after disturbance; (8) to study the relationship between genotypic and phenotypic diversity as a source of forest resilience; (9) to understand the balance between C storage and water resources; (10) to analyse the interplay between landscape-scale processes and biodiversity conservation; (11) to refine models by including interactions between drivers and socio-economic contexts; (12) to understand forest-atmosphere feedbacks; (13) to represent key mechanisms linking plant hydraulics with landscape hydrology. Main conclusions: (1) The interactive nature of different global change drivers remains poorly understood. (2) There is a critical need for the rapid development of regional- and global-scale models that are more tightly connected with large-scale experiments, data networks and management practice. (3) More attention should be directed to drought-related forest decline and the current relevance of historical land use.
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- 2015
62. Consistent response of bird populations to climate change on two continents
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Stephens, P.A., Mason, L.R., Green, R.E., Gregory, R.D., Sauer, J.R., Alison, J., Aunins, A., Brotons, L., Butchart, S.H.M., Campedelli, T., Chodkiewicz, T., Chylarecki, P., Crowe, O., Elts, J., Escandell, V., Foppen, R.P.B., Heldbjerg, H., Herrando, S., Husby, M., Jiguet, F., Lehikoinen, A., Lindström, Å., Noble, D.G., Paquet, J.-Y., Reif, J., Sattler, T., Szép, T., Teufelbauer, N., Trautmann, S., van Strien, A.J., Turnhout, C.A.M. van, Vorisek, P., Willis, S.G., Stephens, P.A., Mason, L.R., Green, R.E., Gregory, R.D., Sauer, J.R., Alison, J., Aunins, A., Brotons, L., Butchart, S.H.M., Campedelli, T., Chodkiewicz, T., Chylarecki, P., Crowe, O., Elts, J., Escandell, V., Foppen, R.P.B., Heldbjerg, H., Herrando, S., Husby, M., Jiguet, F., Lehikoinen, A., Lindström, Å., Noble, D.G., Paquet, J.-Y., Reif, J., Sattler, T., Szép, T., Teufelbauer, N., Trautmann, S., van Strien, A.J., Turnhout, C.A.M. van, Vorisek, P., and Willis, S.G.
- Abstract
Item does not contain fulltext
- Published
- 2016
63. Biodiversity scenarios neglect future land-use changes
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Titeux, N., Henle, Klaus, Mihoub, Jean-Baptiste, Regos, A., Geijzendorffer, I.R., Cramer, W., Verburg, P.H., Brotons, L., Titeux, N., Henle, Klaus, Mihoub, Jean-Baptiste, Regos, A., Geijzendorffer, I.R., Cramer, W., Verburg, P.H., and Brotons, L.
- Abstract
Efficient management of biodiversity requires a forward-looking approach based on scenarios that explore biodiversity changes under future environmental conditions. A number of ecological models have been proposed over the last decades to develop these biodiversity scenarios. Novel modelling approaches with strong theoretical foundation now offer the possibility to integrate key ecological and evolutionary processes that shape species distribution and community structure. Although biodiversity is affected by multiple threats, most studies addressing the effects of future environmental changes on biodiversity focus on a single threat only. We examined the studies published during the last 25 years that developed scenarios to predict future biodiversity changes based on climate, land-use and land-cover change projections. We found that biodiversity scenarios mostly focus on the future impacts of climate change and largely neglect changes in land use and land cover. The emphasis on climate change impacts has increased over time and has now reached a maximum. Yet, the direct destruction and degradation of habitats through land-use and land-cover changes are among the most significant and immediate threats to biodiversity. We argue that the current state of integration between ecological and land system sciences is leading to biased estimation of actual risks and therefore constrains the implementation of forward-looking policy responses to biodiversity decline. We suggest research directions at the crossroads between ecological and environmental sciences to face the challenge of developing interoperable and plausible projections of future environmental changes and to anticipate the full range of their potential impacts on biodiversity. An intergovernmental platform is needed to stimulate such collaborative research efforts and to emphasize the societal and political relevance of taking up this challenge.
- Published
- 2016
64. Climate change distracts us from other threats to biodiversity
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Titeux, N., Henle, Klaus, Mihoub, Jean-Baptiste, Brotons, L., Titeux, N., Henle, Klaus, Mihoub, Jean-Baptiste, and Brotons, L.
- Abstract
no abstract
- Published
- 2016
65. Building scenarios and models of drivers of biodiversity and ecosystem change.
- Author
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Ferrier, S., Ninan, K.N., Leadley, P., Alkemade, R., Acosta, L.A., Akçakaya, H.R., Brotons, L., Cheung, W.W.L., Christensen, V., Harhash, K.A., Kabubo-Mariara, J., Lundquist, C., Obersteiner, M., Pereira, H., Peterson, G., Pichs-Madruga, R., Ravindranath, N., Rondinini, C., Wintle, B.A., Cantele, M., Ahmed, M.T., Cui, X., Cury, P., Fall, S., Kellner, K., Verburg, P., Ferrier, S., Ninan, K.N., Leadley, P., Alkemade, R., Acosta, L.A., Akçakaya, H.R., Brotons, L., Cheung, W.W.L., Christensen, V., Harhash, K.A., Kabubo-Mariara, J., Lundquist, C., Obersteiner, M., Pereira, H., Peterson, G., Pichs-Madruga, R., Ravindranath, N., Rondinini, C., Wintle, B.A., Cantele, M., Ahmed, M.T., Cui, X., Cury, P., Fall, S., Kellner, K., and Verburg, P.
- Published
- 2016
66. Reassessing global change research priorities in mediterranean terrestrial ecosystems: How far have we come and where do we go from here?
- Author
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Doblas-Miranda, E, Doblas-Miranda, E, Martínez-Vilalta, J, Lloret, F, Álvarez, A, Ávila, A, Bonet, FJ, Brotons, L, Castro, J, Curiel Yuste, J, Díaz, M, Ferrandis, P, García-Hurtado, E, Iriondo, JM, Keenan, TF, Latron, J, Llusià, J, Loepfe, L, Mayol, M, Moré, G, Moya, D, Peñuelas, J, Pons, X, Poyatos, R, Sardans, J, Sus, O, Vallejo, VR, Vayreda, J, Retana, J, Doblas-Miranda, E, Doblas-Miranda, E, Martínez-Vilalta, J, Lloret, F, Álvarez, A, Ávila, A, Bonet, FJ, Brotons, L, Castro, J, Curiel Yuste, J, Díaz, M, Ferrandis, P, García-Hurtado, E, Iriondo, JM, Keenan, TF, Latron, J, Llusià, J, Loepfe, L, Mayol, M, Moré, G, Moya, D, Peñuelas, J, Pons, X, Poyatos, R, Sardans, J, Sus, O, Vallejo, VR, Vayreda, J, and Retana, J
- Abstract
Aim: Mediterranean terrestrial ecosystems serve as reference laboratories for the investigation of global change because of their transitional climate, the high spatiotemporal variability of their environmental conditions, a rich and unique biodiversity and a wide range of socio-economic conditions. As scientific development and environmental pressures increase, it is increasingly necessary to evaluate recent progress and to challenge research priorities in the face of global change. Location: Mediterranean terrestrial ecosystems. Methods: This article revisits the research priorities proposed in a 1998 assessment. Results: A new set of research priorities is proposed: (1) to establish the role of the landscape mosaic on fire-spread; (2) to further research the combined effect of different drivers on pest expansion; (3) to address the interaction between drivers of global change and recent forest management practices; (4) to obtain more realistic information on the impacts of global change and ecosystem services; (5) to assess forest mortality events associated with climatic extremes; (6) to focus global change research on identifying and managing vulnerable areas; (7) to use the functional traits concept to study resilience after disturbance; (8) to study the relationship between genotypic and phenotypic diversity as a source of forest resilience; (9) to understand the balance between C storage and water resources; (10) to analyse the interplay between landscape-scale processes and biodiversity conservation; (11) to refine models by including interactions between drivers and socio-economic contexts; (12) to understand forest-atmosphere feedbacks; (13) to represent key mechanisms linking plant hydraulics with landscape hydrology. Main conclusions: (1) The interactive nature of different global change drivers remains poorly understood. (2) There is a critical need for the rapid development of regional- and global-scale models that are more tightly connected with larg
- Published
- 2015
67. From management to stewardship: Viewing forests as complex adaptive systems in an uncertain world
- Author
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Messier, C., Puettmann, K.J., Chazdon, R.L., Andersson, K.P., Angers, V.A., Brotons, L., Filotas, E., Tittler, R., Parrott, L., Levin, S.A., Messier, C., Puettmann, K.J., Chazdon, R.L., Andersson, K.P., Angers, V.A., Brotons, L., Filotas, E., Tittler, R., Parrott, L., and Levin, S.A.
- Abstract
The world's forests and forestry sector are facing unprecedented biological, political, social, and climatic challenges. The development of appropriate, novel forest management and restoration approaches that adequately consider uncertainty and adaptability are hampered by a continuing focus on production of a few goods or objectives, strong control of forest structure and composition, and most importantly the absence of a global scientific framework and long-term vision. Ecosystem-based approaches represent a step in the right direction, but are limited in their ability to deal with the rapid pace of social, climatic, and environmental changes. We argue here that viewing forest ecosystems as complex adaptive system provides a better alternative for both production- and conservation-oriented forests and forestry. We propose a set of broad principles and changes to increase the adaptive capacity of forests in the face of future uncertainties. These span from expanding the sustained-yield, single-good paradigm to developing policy incentives and interventions that promote self-organization and integrated social-ecological adaptation.
- Published
- 2015
68. Bridging the gap between biodiversity data and policy reporting needs: An Essential Biodiversity Variables perspective
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Geijzendorffer, I.R., Regan, E.C., Pereira, H.M., Brotons, L., Brummitt, N., Gavish, Y., Haase, P., Martin, C.S., Mihoub, Jean-Baptiste, Secades, C., Schmeller, Dirk Sven, Stoll, S., Wetzel, F.T., Walters, M., Geijzendorffer, I.R., Regan, E.C., Pereira, H.M., Brotons, L., Brummitt, N., Gavish, Y., Haase, P., Martin, C.S., Mihoub, Jean-Baptiste, Secades, C., Schmeller, Dirk Sven, Stoll, S., Wetzel, F.T., and Walters, M.
- Abstract
Political commitment and policy instruments to halt biodiversity loss require robust data and a diverse indicator set to monitor and report on biodiversity trends. Gaps in data availability and narrow-based indicator sets are significant information barriers to fulfilling these needs.In this paper, the reporting requirements of seven global or European biodiversity policy instruments were reviewed using the list of Essential Biodiversity Variables (EBVs) as an analytical framework. The reporting requirements for the most comprehensive policy instrument, the United Nation's Strategic Plan for Biodiversity 2011–2020, were compared with the indicator set actually used for its reporting, to identify current information gaps. To explore the extent to which identified gaps could be bridged, the potential contribution of data mobilization, modelling and further processing of existing data was assessed.The information gaps identified demonstrate that decision-makers are currently constrained by the lack of data and indicators on changes in the EBV classes Genetic Composition and, to a lesser extent, Species Populations for which data is most often available. Furthermore, the results show that even when there is a requirement for specific information for reporting, the indicators used may not be able to provide all the information, for example current Convention of Biological Diversity indicators provide relatively little information on changes in the Ecosystem Function and Ecosystem Structure classes. This gap could be partly closed by using existing indicators as proxies, whereas additional indicators may be computed based on available data (e.g. for EBVs in the Ecosystem Structure class). However, for the EBV class Genetic Composition, no immediate improvement based on proxies or existing data seems possible.Synthesis and applications. Using Essential Biodiversity Variables (EBVs) as a tool, theory-driven comparisons could be made between the biodiversity information gaps
- Published
- 2015
69. Local and landscape-scale biotic correlates of mistletoe distribution in Mediterranean pine forests
- Author
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Roura-Pascual, N., Brotons, L., García, D., Zamora, R., de Càceres, M., Spanish Ministry of Research, Science and Innovation (MICINN), and Catalan Agency for Management of University and Research Grants (Generalitat de Catalunya)
- Abstract
The study of the spatial patterns of species allows the examination of hypotheses on the most plausible ecological processes and factors determining their distribution. To investigate the determinants of parasite species on Mediterranean forests at regional scales, occurrence data of the European Misletoe (Viscum album) in Catalonia (NE Iberian Peninsula) were extracted from forest inventory data and combined with different types of explanatory variables by means of generalized linear mixed models. The presence of mistletoes in stands of Pinus halepensis seems to be determined by multiple factors (climatic conditions, and characteristics of the host tree and landscape structure) operating at different spatial scales, with the availability of orchards of Olea europaea in the surroundings playing a relevant role. These results suggest that host quality and landscape structure are important mediators of plant-plant and plant-animal interactions and, therefore, management of mistletoe populations should be conducted at both local (i.e. clearing of infected host trees) and landscape scales (e.g. controlling the availability of nutrient-rich food sources that attract bird dispersers). Research and management at landscape-scales are necessary to anticipate the negative consequence of land-use changes in Mediterranean forests., El estudio de los patrones espaciales de las especies permite examinar hipótesis sobre los procesos ecológicos y factores más plausibles que determinan su distribución. Para investigar los determinantes de una especie parásita en bosques mediterráneos a escala regional, se combinaron datos sobre la presencia de muérdago (Viscum album) en Cataluña (NE de la Península Ibérica) extraídos del inventario forestal con diferentes variables explicativas por medio de modelos mixtos generalizados. La presencia de muérdago en masas de Pinus halepensis parece estar determinada por múltiples factores (condiciones climáticas, características del árbol hospedante, y estructura del paisaje) que operan a diferentes escalas espaciales, jugando los cultivos de Olea europaea un papel relevante. Los resultados sugieren que la calidad de los árboles hospedantes y la estructura del paisaje son importantes mediadores de las interacciones planta-planta y planta- animal y, por tanto, la gestión de las poblaciones de muérdago debería llevarse a cabo tanto a nivel local (es decir, cortando árboles hospedantes infectados) como de paisaje (por ejemplo, controlando la disponibilidad de hábitats ricos en nutrientes que atraen a las aves dispersantes). La investigación y gestión a escala de paisaje son necesarias para prevenir las consecuencias negativas de los cambios de uso del suelo en los bosques mediterráneos.
- Published
- 2012
70. Correspondence: Uncertainty in thermal tolerances and climatic debt
- Author
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Devictor, V., van Swaay, C., Brereton, T., Brotons, L., Chamberlain, D., Heliölä, J., Herrando, S., Julliard, R., Kuussaari, M., Lindström, A., Reif, J., Roy, D.B., Schweiger, O., Settele, J., Stefanescu, C., van Strien, A., van Turnhout, C., Vermouzek, Z., Wallis de Vries, M.F., Wynhoff, I., and Jiguet, F.
- Subjects
Wildlife Ecology and Conservation ,Life Science ,Laboratory of Entomology ,PE&RC ,Laboratorium voor Entomologie - Published
- 2012
71. From Management to Stewardship: Viewing Forests As Complex Adaptive Systems in an Uncertain World
- Author
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Messier, C., primary, Puettmann, K., additional, Chazdon, R., additional, Andersson, K.P., additional, Angers, V.A., additional, Brotons, L., additional, Filotas, E., additional, Tittler, R., additional, Parrott, L., additional, and Levin, S.A., additional
- Published
- 2015
- Full Text
- View/download PDF
72. Presence-absence versus presence-only modelling methods for predicting bird habitat suitability
- Author
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Brotons, L., Thuiller, W., Araujo, M. l B., and Hirzel, A. H.
- Abstract
Habitat suitability models can be generated using methods requiring information on species presence or species presence and absence. Knowledge of the predictive performance of such methods becomes a critical issue to establish their optimal scope of application for mapping current species distributions under different constraints. Here, we use breeding bird atlas data in Catalonia as a working example and attempt to analyse the relative performance of two methods: the Ecological Niche factor Analysis (ENFA) using presence data only and Generalised Linear Models (GLM) using presence/absence data. Models were run on a set of forest species with similar habitat requirements, but with varying occurrence rates (prevalence) and niche positions (marginality). Our results support the idea that GLM predictions are more accurate than those obtained with ENFA. This was particularly true when species were using available habitats proportionally to their suitability, making absence data reliable and useful to enhance model calibration. Species marginality in niche space was also correlated to predictive accuracy, i.e. species with less restricted ecological requirements were modelled less accurately than species with more restricted requirements. This pattern was irrespective of the method employed. Models for wide-ranging and tolerant species were more sensitive to absence data, suggesting that presence/absence methods may be particularly important for predicting distributions of this type of species. We conclude that modellers should consider that species ecological characteristics are critical in determining the accuracy of models and that it is difficult to predict generalist species distributions accurately and this is independent of the method used. Being based on distinct approaches regarding adjustment to data and data quality, habitat distribution modelling methods cover different application areas, making it difficult to identify one that should be universally applicable. Our results suggest however, that if absence data is available, methods using this information should be preferably used in most situations.
- Published
- 2004
73. Reassessing global change research priorities in mediterranean terrestrial ecosystems: how far have we come and where do we go from here?
- Author
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Doblas-Miranda, E., primary, Martínez-Vilalta, J., additional, Lloret, F., additional, Álvarez, A., additional, Ávila, A., additional, Bonet, F. J., additional, Brotons, L., additional, Castro, J., additional, Curiel Yuste, J., additional, Díaz, M., additional, Ferrandis, P., additional, García-Hurtado, E., additional, Iriondo, J. M., additional, Keenan, T. F., additional, Latron, J., additional, Llusià, J., additional, Loepfe, L., additional, Mayol, M., additional, Moré, G., additional, Moya, D., additional, Peñuelas, J., additional, Pons, X., additional, Poyatos, R., additional, Sardans, J., additional, Sus, O., additional, Vallejo, V. R., additional, Vayreda, J., additional, and Retana, J., additional
- Published
- 2014
- Full Text
- View/download PDF
74. Predicting species distributions for conservation decisions
- Author
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Arita, H, Guisan, A, Tingley, R, Baumgartner, JB, Naujokaitis-Lewis, I, Sutcliffe, PR, Tulloch, AIT, Regan, TJ, Brotons, L, McDonald-Madden, E, Mantyka-Pringle, C, Martin, TG, Rhodes, JR, Maggini, R, Setterfield, SA, Elith, J, Schwartz, MW, Wintle, BA, Broennimann, O, Austin, M, Ferrier, S, Kearney, MR, Possingham, HP, Buckley, YM, Arita, H, Guisan, A, Tingley, R, Baumgartner, JB, Naujokaitis-Lewis, I, Sutcliffe, PR, Tulloch, AIT, Regan, TJ, Brotons, L, McDonald-Madden, E, Mantyka-Pringle, C, Martin, TG, Rhodes, JR, Maggini, R, Setterfield, SA, Elith, J, Schwartz, MW, Wintle, BA, Broennimann, O, Austin, M, Ferrier, S, Kearney, MR, Possingham, HP, and Buckley, YM
- Abstract
Species distribution models (SDMs) are increasingly proposed to support conservation decision making. However, evidence of SDMs supporting solutions for on-ground conservation problems is still scarce in the scientific literature. Here, we show that successful examples exist but are still largely hidden in the grey literature, and thus less accessible for analysis and learning. Furthermore, the decision framework within which SDMs are used is rarely made explicit. Using case studies from biological invasions, identification of critical habitats, reserve selection and translocation of endangered species, we propose that SDMs may be tailored to suit a range of decision-making contexts when used within a structured and transparent decision-making process. To construct appropriate SDMs to more effectively guide conservation actions, modellers need to better understand the decision process, and decision makers need to provide feedback to modellers regarding the actual use of SDMs to support conservation decisions. This could be facilitated by individuals or institutions playing the role of 'translators' between modellers and decision makers. We encourage species distribution modellers to get involved in real decision-making processes that will benefit from their technical input; this strategy has the potential to better bridge theory and practice, and contribute to improve both scientific knowledge and conservation outcomes.
- Published
- 2013
75. Soil carbon stocks and their variability across the forests, shrublands and grasslands of peninsular Spain
- Author
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Doblas-Miranda, E., primary, Rovira, P., additional, Brotons, L., additional, Martínez-Vilalta, J., additional, Retana, J., additional, Pla, M., additional, and Vayreda, J., additional
- Published
- 2013
- Full Text
- View/download PDF
76. Differences in the climatic debts of birds and butterflies at a continental scale
- Author
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Devictor, V., Swaay, C. Van, Brereton, T., Brotons, L., Chamberlain, D., Heliölö, J., Herrando, S., Julliard, R., Kuussaari, M., Lindström, A., Reif, J., Roy, D.B., Schweiger, O., Settele, J., Stefanescu, C., Strien, A. van, Turnhout, C. van, Vermouzek, Z., DeVries, M. Wallis, Wynhoff, I., Jiguet, F., Devictor, V., Swaay, C. Van, Brereton, T., Brotons, L., Chamberlain, D., Heliölö, J., Herrando, S., Julliard, R., Kuussaari, M., Lindström, A., Reif, J., Roy, D.B., Schweiger, O., Settele, J., Stefanescu, C., Strien, A. van, Turnhout, C. van, Vermouzek, Z., DeVries, M. Wallis, Wynhoff, I., and Jiguet, F.
- Abstract
Item does not contain fulltext
- Published
- 2012
77. Uncertainty in thermal tolerances and climatic debt - reply
- Author
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Devictor, V., van Swaay, C., Brereton, T., Brotons, L., Chamberlain, D., Heliölä, J., Herrando, S., Julliard, R., Kuussaari, M., Lindström, Å., Reif, J., Roy, D.B., Schweiger, Oliver, Settele, Josef, Stefanescu, C., van Strien, A., Van Turnhout, C., Vermouzek, Z., WallisDeVries, M., Wynhoff, I., Jiguet, F., Devictor, V., van Swaay, C., Brereton, T., Brotons, L., Chamberlain, D., Heliölä, J., Herrando, S., Julliard, R., Kuussaari, M., Lindström, Å., Reif, J., Roy, D.B., Schweiger, Oliver, Settele, Josef, Stefanescu, C., van Strien, A., Van Turnhout, C., Vermouzek, Z., WallisDeVries, M., Wynhoff, I., and Jiguet, F.
- Abstract
no abstract
- Published
- 2012
78. Nature conservation - a new dimension in open access publishing bridging science and application
- Author
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Henle, Klaus, Bell, S., Brotons, L., Clobert, J., Evans, D., Görg, Christoph, Grodzińska-Jurczak, M., Gruber, Bernd, Haila, Yriö, Henry, P.-Y., Huth, Andreas, Julliard, R., Keil, P., Kleyer, M., Kotze, D.J., Kunin, W., Lengyel, S., Lin, Y.-P., Loyau, Adeline, Luck, G., Magnuson, W., Margules, C., Matsinos, Yiannis, May, P., Sousa-Pinto, I., Possingham, H., Potts, S., Ring, Irene, Pryke, J., Samways, M., Saunders, D., Schmeller, Dirk Sven, Similä, J., Sommer, S., Steffan-Dewenter, I., Stoev, P., Sykes, M., Tóthmérész, B., Yam, R., Tzanopoulos, J., Penev, L., Henle, Klaus, Bell, S., Brotons, L., Clobert, J., Evans, D., Görg, Christoph, Grodzińska-Jurczak, M., Gruber, Bernd, Haila, Yriö, Henry, P.-Y., Huth, Andreas, Julliard, R., Keil, P., Kleyer, M., Kotze, D.J., Kunin, W., Lengyel, S., Lin, Y.-P., Loyau, Adeline, Luck, G., Magnuson, W., Margules, C., Matsinos, Yiannis, May, P., Sousa-Pinto, I., Possingham, H., Potts, S., Ring, Irene, Pryke, J., Samways, M., Saunders, D., Schmeller, Dirk Sven, Similä, J., Sommer, S., Steffan-Dewenter, I., Stoev, P., Sykes, M., Tóthmérész, B., Yam, R., Tzanopoulos, J., and Penev, L.
- Abstract
This Editorial presents the focus, scope and policies of the inaugural issue of Nature Conservation, a new open access, peer-reviewed journal bridging natural sciences, social sciences and hands-on applications in conservation management. The journal covers all aspects of nature conservation and aims particularly at facilitating better interaction between scientists and practitioners. The journal will impose no restrictions on manuscript size or the use of colour. We will use an XML-based editorial workflow and several cutting-edge innovations in publishing and information dissemination. These include semantic mark-up of, and enhancements to published text, data, and extensive cross-linking within the journal and to external sources. We believe the journal will make an important contribution to better linking science and practice, offers rapid, peer-reviewed and flexible publication for authors and unrestricted access to content.
- Published
- 2012
79. Supplementary material to "Soil carbon stocks and their variability across the woodlands of peninsular Spain"
- Author
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Doblas-Miranda, E., primary, Rovira, P., additional, Brotons, L., additional, Martínez-Vilalta, J., additional, Retana, J., additional, Pla, M., additional, and Vayreda, J., additional
- Published
- 2013
- Full Text
- View/download PDF
80. Soil carbon stocks and their variability across the woodlands of peninsular Spain
- Author
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Doblas-Miranda, E., primary, Rovira, P., additional, Brotons, L., additional, Martínez-Vilalta, J., additional, Retana, J., additional, Pla, M., additional, and Vayreda, J., additional
- Published
- 2013
- Full Text
- View/download PDF
81. The MUSE project face to face with reality
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Caillier, P., primary, Accardo, M., additional, Adjali, L., additional, Anwand, H., additional, Bacon, Roland, additional, Boudon, D., additional, Brotons, L., additional, Capoani, L., additional, Daguisé, E., additional, Dupieux, M., additional, Dupuy, C., additional, François, M., additional, Glindemann, A., additional, Gojak, D., additional, Hansali, G., additional, Hahn, T., additional, Jarno, A., additional, Kelz, A., additional, Koehler, C., additional, Kosmalski, J., additional, Laurent, F., additional, Le Floch, M., additional, Lizon, J.-L., additional, Loupias, M., additional, Manescau, A., additional, Migniau, J. E., additional, Monstein, C., additional, Nicklas, H., additional, Parès, L., additional, Pécontal-Rousset, A., additional, Piqueras, L., additional, Reiss, R., additional, Remillieux, A., additional, Renault, E., additional, Rupprecht, G., additional, Streicher, O., additional, Stuik, R., additional, Valentin, H., additional, Vernet, J., additional, Weilbacher, P., additional, and Zins, G., additional
- Published
- 2012
- Full Text
- View/download PDF
82. MUSE instrument global performance test
- Author
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Loupias, M., primary, Kosmalski, J., additional, Adjali, L., additional, Bacon, R., additional, Boudon, D., additional, Brotons, L., additional, Caillier, P., additional, Capoani, L., additional, Daguisé, E., additional, Jarno, A., additional, Hansali, G., additional, Kelz, A., additional, Laurent, F., additional, Migniau, J. E., additional, Pécontal-Rousset, A., additional, Piqueras, L., additional, Remillieux, A., additional, Renault, E., additional, Streicher, O., additional, Weilbacher, P., additional, and Zins, G., additional
- Published
- 2012
- Full Text
- View/download PDF
83. Valuing acorn dispersal and resprouting capacity ecological functions to ensure Mediterranean forest resilience after fire
- Author
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Puerta-Piñero, C., primary, Brotons, L., additional, Coll, L., additional, and González-Olabarría, J. R., additional
- Published
- 2011
- Full Text
- View/download PDF
84. The MUSE project from the dream toward reality
- Author
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Callier, P., primary, Accardo, M., additional, Adjali, L., additional, Anwand, H., additional, Bacon, R., additional, Bauer, S. M., additional, Biswas, I., additional, Boudon, D., additional, Brau-Nogué, S., additional, Brotons, L., additional, Capoani, L., additional, Contini, T., additional, Daguisé, E., additional, Deiries, S., additional, Delabre, B., additional, Dubois, J.-P., additional, Dupieux, M., additional, Dupuis, C., additional, Fechner, T., additional, Fleischmann, A., additional, François, M., additional, Gallou, G., additional, Gharsa, T., additional, Glindemann, A., additional, Gojak, D., additional, Hansali, G., additional, Hahn, T., additional, Jarno, A., additional, Kelz, A., additional, Koehler, C., additional, Kosmalski, J., additional, Laurent, F., additional, Le Floch, M., additional, Lizon, J.-L., additional, Loupias, M., additional, Manescau, A., additional, Monstein, C., additional, Nicklas, H., additional, Olaya, J.-C., additional, Parès, L., additional, Pasquini, L., additional, Pécontal-Rousset, A., additional, Petit, C., additional, Popow, E., additional, Reiss, R., additional, Remillieux, A., additional, Renault, E., additional, Roth, M., additional, Rupprecht, G., additional, Serre, D., additional, Streicher, O., additional, Stuik, R., additional, Vernet, J., additional, Weilbacher, P., additional, Wisotzki, L., additional, and Yerle, N., additional
- Published
- 2010
- Full Text
- View/download PDF
85. Effects of forest composition and structure on bird species richness in a Mediterranean context: Implications for forest ecosystem management
- Author
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Gil-Tena, A., primary, Saura, S., additional, and Brotons, L., additional
- Published
- 2007
- Full Text
- View/download PDF
86. Reduced bird occurrence in pine forest fragments associated with road proximity in a Mediterranean agricultural area
- Author
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Brotons, L, primary
- Published
- 2001
- Full Text
- View/download PDF
87. Fluctuating asymmetry in Sardinian WarblersSylvia melanocephalainhabiting two shrublands affected by fire
- Author
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Herrando, S., primary and Brotons, L., additional
- Published
- 2001
- Full Text
- View/download PDF
88. Soil carbon stocks and their variability across the woodlands of peninsular Spain.
- Author
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Doblas-Miranda, E., Rovira, P., Brotons, L., Martínez-Vilalta, J., Retana, J., Pla, M., and Vayreda, J.
- Subjects
CARBON in soils ,PENINSULAS ,FORESTS & forestry ,GLOBAL warming ,CARBON dioxide mitigation ,ESTIMATION theory - Abstract
Global warming effects in our ecosystems could be offset by reducing carbon emissions and protecting and increasing carbon stocks. Accurate estimates of carbon stocks and fluxes of soil organic carbon (SOC) are thus needed to asses the impact of climate and land-use change on soil C uptake and soil C emissions to the atmosphere. Here, we present an assessment of SOC stocks in woodlands (forest, shrublands and grasslands) of peninsular Spain based on field measurements in more than 900 soil profiles. Estimations of soil C stocks for the 7 796 306 plots of the Spanish Forest Map (24.3 X 10
6 ha.) were carried out using a statistical model that included, as explanatory variables, vegetation cover, parent material, soil consistency, mean annual temperature, total annual precipitation and elevation, and the influence of spatial correlation. We present what we believe is the most reliable estimation of current SOC in woodlands of peninsular Spain thus far, based on the considered predictors, the high number of profiles and the validity and refinement of the data layers employed. Mean concentration of SOC was 8.8 kgm-2 , which is slightly higher than that presented in previous studies. This value corresponds to a total stock of 2574TgSOC, which is four times the amount of carbon estimated to be stored in the biomass of Spanish forests. Climate and vegetation cover were the main variables influencing SOC, with important ecological implications for peninsular Spanish ecosystems in the face of global change. The fact that SOC was positively related to annual precipitation and negatively related to mean annual temperature suggests that future climate change may strongly reduce the potential of Spanish soils as carbon sinks. However, this may be mediated by changes in vegetation cover (e.g., by favouring the development of forests associated to higher SOC values) and threatened by perturbations such as fire. The estimations presented here should improve our capacity to respond to global change by carbon stocks conservation and management. [ABSTRACT FROM AUTHOR]- Published
- 2013
- Full Text
- View/download PDF
89. Forest bird diversity in Mediterranean areas affected by wildfires: a multi-scale approach.
- Author
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Herrando, S. and Brotons, L.
- Subjects
- *
BIRD populations , *ANIMAL dispersal - Abstract
Fire is a key mechanism creating and maintaining habitat heterogeneity in Mediterranean landscapes by turning continuous woody landscapes into mosaics of forests and shrublands. Due to the long historical role of fires in the Mediterranean, we hypothesised a moderate negative effect of this type of perturbation on forest bird distribution at a landscape level. We conducted point bird censuses in Aleppo pine forest patches surrounded by burnt shrublands and studied the relationships between three ecological groups of bird species (forest canopy species, forest understorey species, and ubiquitous species) and the features of local habitat, whole patch and surrounding landscape. We used a multi-scale approach to assess the effects of landscape variables at increasing spatial scales on point bird richness. Regarding local habitat components, canopy species were positively associated with tall pines while understorey species with the cover of shrubs and plants from holm-oak forests. Forest birds were positively related to patch size and irregular forest shapes, that is, with high perimeter/size ratios. Thus, these species did not seem to perceive edges as low quality but rather favourable microhabitats. We did not detect any negative effect of isolation or cover of woodlands in the landscape on the presence of forest species after local habitat factors had been accounted for. Finally, only local habitat factors entered the model for ubiquitous species. We suggest that mosaic-like landscapes shaped by fires in the Mediterranean basin are not strongly associated with negative effects fragmentation on forest birds other than those related with habitat loss. [ABSTRACT FROM AUTHOR]
- Published
- 2002
- Full Text
- View/download PDF
90. Fluctuating asymmetry in Sardinian Warblers Sylvia melanocephala inhabiting two shrublands affected by fire.
- Author
-
Herrando, S. and Brotons, L.
- Abstract
The effects of post-fire changes in vegetation and habitat quality on the developmental stability of individual birds have not been assessed to date. Here we compare fluctuating asymmetry in tail feathers of Sardinian WarblersSylvia melanocephalainhabiting two shrubby zones, the first burned in both 1982 and 1994 and the second only in 1982. Juveniles with unmoulted rectrices showed significantly higher levels of tail feather asymmetry in the zone burned in 1994. This result is consistent with the hypothesis that recently burned shrublands offer lower quality habitats for this species. Because feather asymmetry was positively and significantly related to the abundance of low shrubs up to 50 cm tall, we suggest that juvenile assessment of habitat quality is primarily based on the structure of the shrub layer. [ABSTRACT FROM PUBLISHER]
- Published
- 2001
- Full Text
- View/download PDF
91. Factors affecting bird communities in fragments of secondary pine forests in the north-western Mediterranean basin
- Author
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Brotons, L. and Herrando, S.
- Published
- 2001
- Full Text
- View/download PDF
92. News of the MUSE
- Author
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Bacon, R., Accardo, M., Adjali, L., Anwand, H., Bauer, S. -M, Blaizot, J., Boudon, D., Brinchmann, J., Brotons, L., Caillier, P., Capoani, L., Carollo, M., Comin, M., Contini, T., Cumani, C., Daguis, E., Deiries, S., Delabre, B., Dreizler, S., Dubois, J. -P, Dupieux, M., Dupuy, C., Emsellem, E., Fleischmann, A., François, M., Gallou, G., Gharsa, T., Girard, N., Glindemann, A., Guiderdoni, B., Hahn, T., Hansali, G., Hofmann, D., Jarno, A., Kelz, A., Kiekebusch, M., Knudstrup, J., Koehler, C., Kollatschny, W., Kosmalski, J., Laurent, F., Le Floch, M., Lilly, S., Lizon À L Allemand, J. -L, Loupias, M., Manescau, A., Monstein, C., Nicklas, H., Niemeyer, J., Olaya, J. -C, Palsa, R., Parès, L., Pasquini, L., Pécontal-Rousset, A., Pello, R., Petit, C., Piqueras, L., Popow, E., Reiss, R., Remillieux, A., Renault, E., Rhode, P., Richard, J., Roth, J., Rupprecht, G., Schaye, J., Slezak, E., Soucail, G., Steinmetz, M., Streicher, O., Stuik, R., Valentin, H., Joël Vernet, Weilbacher, P., Wisotzki, L., Yerle, N., and Zins, G.
93. CONNECTIVITY DETERMINES POST-FIRE COLONISATION BY OPEN-HABITAT BIRD SPECIES: THE CASE OF THE ORTOLAN BUNTING EMBERIZA HORTULANA
- Author
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Zozaya, E. L., Brotons, L., Saura, S., Pere Pons, and Herrando, S.
94. Modelling bird species richness with neural networks for forest landscape management in NE Spain
- Author
-
Gil-Tena, A., Cristina Vega-Garcia, Brotons, L., and Saura, S.
- Subjects
Incendios ,Ecologia del paisatge -- Catalunya ,Ecologia forestal -- Catalunya ,Composición y estructura del paisaje forestal ,Biodiversidad forestal ,Cambio global ,Boscos -- Gestió -- Catalunya ,Ocells -- Catalunya - Abstract
Para preservar la biodiversidad de los ecosistemas forestales de la Europa mediterránea en escenarios actuales y futuros de cambio global mediante una gestión forestal sostenible es necesario determinar cómo influye el medio ambiente y las propias características de los bosques sobre la biodiversidad que éstos albergan. Con este propósito, se analizó la influencia de diferentes factores ambientales y de estructura y composición del bosque sobre la riqueza de aves forestales a escala 1 × 1 km en Cataluña (NE de España). Se construyeron modelos univariantes y multivariantes de redes neuronales para respectivamente explorar la respuesta individual a las variables y obtener un modelo parsimonioso (ecológicamente interpretable) y preciso. La superficie de bosque (con una fracción de cabida cubierta superior a 5%), la fracción de cabida cubierta media, la temperatura anual y la precipitación estival medias fueron los mejores predictores de la riqueza de aves forestales. La red neuronal multivariante obtenida tuvo una buena capacidad de generalización salvo en las localidades con una mayor riqueza. Además, los bosques con diferentes grados de apertura del dosel arbóreo, más maduros y más diversos en cuanto a su composición de especies arbóreas se asociaron de forma positiva con una mayor riqueza de aves forestales. Finalmente, se proporcionan directrices de gestión para la planificación forestal que permitan promover la diversidad ornítica en esta región de la Europa mediterránea. For preserving biodiversity of European-Mediterranean forest ecosystems in current and future scenarios of global change by means of sustainable forest management it is necessary to determine how environment and forest characteristics correlate with biodiversity. For this purpose, neural networks were used to model forest bird species richness as a function of environment and forest structure and composition at the 1 x 1 km scale in Catalonia (NE Spain). Univariate and multivariate models respectively allowed exploring individual variable response and obtaining a parsimonious (ecologically meaningful) and accurate neural network. Forest area (with a canopy cover above 5%), mean forest canopy cover, mean annual temperature and summer precipitation were the best predictors of forest bird species richness. The resultant multivariate network had a good generalization capacity that failed however in the locations with highest species richness. Additionally, those forests with different degrees of canopy closure that were more mature and presented a more diverse tree species composition were also associated with higher bird species richness. This allowed us to provide management guidelines for forest planning in order to promote avian diversity in this European-Mediterranean region.
95. Seguimiento de la dinámica espacial y temporal de comunidades de aves en paisajes mediterráneos afectados por grandes fuegos
- Author
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Zozaya, E. L., Brotons, L., Herrando, S., Pons, P., Josep Rost, and Clavero, M.
- Subjects
contexto paisajístico ,open-habitat species ,zonas recientemente quemadas ,species colonisation ,Colonización de especies ,Dispersion ,especies de hábitats abiertos ,vegetación antes del fuego ,landscape context ,dispersión ,pre-fire vegetation - Abstract
[EN] Monitoring spatial and temporal dynamics of bird communities in Mediterranean land- scapes affected by large wildfires. We presented a bird-monitoring database in Mediterranean landscapes (Catalonia, NE Spain) affected by wildfires and we evaluated: 1) the spatial and temporal variability in the bird community composi- tion and 2) the influence of pre-fire habitat configuration in the composition of bird communities. The DINDIS database results from the monitoring of bird communities occupying all areas affected by large wildfires in Catalonia since 2000. We used bird surveys conducted from 2006 to 2009 and performed a principal components analysis to describe two main gradients of variation in the composition of bird communities, which were used as descriptors of bird communities in subsequent analyses. We then analysed the relationships of these community descriptors with bioclimatic regions within Catalonia, time since fire and pre-fire vegetation (forest or shrubland). We have conducted 1,918 bird surveys in 567 transects distributed in 56 burnt areas. Eight out of the twenty most common detected species have an unfavourable conservation status, most of them being associated to open-habitats. Both bird communities’ descriptors had a strong regional component and were related to pre-fire vegetation, and to a lesser extent to the time since fire. We came to the conclusion that the responses of bird communi- ties to wildfires are heterogeneous, complex and context dependent. Large-scale monitoring datasets, such as DINDIS, might allow identifying factors acting at different spatial and temporal scales that affect the dynamics of species and communities, giving additional information on the causes under general trends observed using other monitoring systems., [ES] Se ha presentado una base de datos de aves en paisajes mediterráneos (Cataluña, NE España) afectados por incendios forestales y se ha evaluado: 1) la variabilidad espacial y temporal de la respuesta de la comunidad de aves al fuego y 2) el impacto de la vegetación antes del incendio en la composición de la comunidad de aves. La base de datos DINDIS contiene información avifaunística de todas las áreas forestales quemadas desde el año 2000 en Cataluña. Se utiliza la información disponible hasta la fecha y se realiza un análisis de componentes principales para describir dos patrones esenciales de variación en la comunidad de aves, los cuales fueron utilizados como descriptores de la comunidad en los siguientes análisis. Se analiza la relación de dichos descriptores con las regiones bioclimáticas dentro de Cataluña, el tiempo transcurrido después del fuego y la vegetación antes del incendio (bosque o matorral). Se realizó un total de 1.918 censos en 567 transectos distribuidos en 56 áreas quemadas. Ocho de las veinte especies más comunes tienen valor de conservación, la mayoría asociadas a hábitats abiertos. Ambos descriptores de la comunidad de aves estuvieron significativamente relacionados con la componente regional y con la vegetación antes del incendio, y en menor medida con el tiempo transcurrido después del incendio. Se concluye que las respuestas de las comunidades de aves a los incendios son heterogéneas, complejas y dependientes del contexto del paisaje.Asimismo, la disponibilidad de una base de datos a gran escala como DINDIS permitiría identificar los factores que actúan a diferentes escalas espaciales y temporales que determinan la dinámica de las especies, ofreciendo información complementaria sobre las causas detrás de las tendencias poblacionales observadas utilizando otros sistemas de monitoreo.
96. Population responses of bird populations to climate change on two continents vary with species’ ecological traits but not with direction of change in climate suitability
- Author
-
Mason, LR, Green, RE, Howard, C, Stephens, PA, Willis, SG, Aunins, A, Brotons, L, Chodkiewicz, T, Chylarecki, P, Escandell, V, Foppen, RPB, Herrando, S, Husby, M, Jiguet, F, Kålås, JA, Lindström, Å, Massimino, D, Moshøj, C, Nellis, R, Paquet, JY, Reif, J, Sirkiä, PM, Szép, T, Florenzano, GT, Teufelbauer, N, Trautmann, S, Van Strien, A, Van Turnhout, CAM, Voříšek, P, and Gregory, RD
- Subjects
climate suitability trend ,13. Climate action ,breeding habitat ,sense organs ,migratory behaviour ,population trend ,15. Life on land ,skin and connective tissue diseases ,species distribution models ,body mass - Abstract
Climate change is a major global threat to biodiversity with widespread impacts on ecological communities. Evidence for beneficial impacts on populations is perceived to be stronger and more plentiful than that for negative impacts, but few studies have investigated this apparent disparity, or how ecological factors affect population responses to climatic change. We examined the strength of the relationship between species-specific regional population changes and climate suitability trends (CST), using 30-year datasets of population change for 525 breeding bird species in Europe and the USA. These data indicate a consistent positive relationship between population trend and CST across the two continents. Importantly, we found no evidence that this positive relationship differs between species expected to be negatively and positively impacted across the entire taxonomic group, suggesting that climate change is causing equally strong, quantifiable population increases and declines. Species’ responses to changing climatic suitability varied with ecological traits, however, particularly breeding habitat preference and body mass. Species associated with inland wetlands responded most strongly and consistently to recent climatic change. In Europe, smaller species also appeared to respond more strongly, whilst the relationship with body mass was less clear-cut for North American birds. Overall, our results identify the role of certain traits in modulating responses to climate change and emphasise the importance of long-term data on abundance for detecting large-scale species’ responses to environmental changes.
97. Bird community succession after fire in a dry Mediterranean shrubland
- Author
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Sergi Herrando, Brotons, L., Del Amo, R., and Llacuna, S.
98. The methodological assessment report on scenarios and models of biodiversity and ecosystem services of the intergovernmental science-policy platform on biodiversity and ecosystem services
- Author
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Pichs-Madruga, R., Obersteiner, M., Cantele, M., Ahmed, M.T., Cui, X., Cury, P., Fall, S., Kellner, K., Verburg, P., Ferrier, S. (ed.), Ninan, K.N. (ed.), Leadley, P. (ed.), Alkemade, R. (ed.), Acosta, L.A. (ed.), Akçakaya, H.R. (ed.), Brotons, L. (ed.), Cheung, W.W.L. (ed.), Christensen, V. (ed.), Harhash, K.A. (ed.), Kabubo-Mariara, J. (ed.), Lundquist, C. (ed.), Obersteiner, M. (ed.), Pereira, H.M. (ed.), Peterson, G. (ed.), Pichs-Madruga, R. (ed.), Ravindranath, N. (ed.), Rondinini, C. (ed.), Wintle, B.A. (ed.), Ferrier, S., Ninan, K.N., Leadley, P., Alkemade, R., Acosta, L.A., Akçakaya, H.R., Brotons, L., Cheung, W.W.L., Christensen, V., Harhash, K.A., Kabubo-Mariara, J., Lundquist, C., Obersteiner, M., Pereira, H., Peterson, G., Pichs-Madruga, R., Ravindranath, N., Rondinini, C., and Wintle, B.A.
- Published
- 2018
99. TEASIng apart alien species risk assessments: A framework for best practices
- Author
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Leung, B, Roura-Pascual, N, Bacher, S, Heikkilä, J, Brotons, L, Burgman, MA, Dehnen-Schmutz, K, Essl, F, Hulme, Philip, Richardson, DM, Sol, D, Vilà, M, and Rejmanek, M
- Published
- 2012
- Full Text
- View/download PDF
100. Improving ecosystem assessments in Mediterranean social-ecological systems: a DPSIR analysis
- Author
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Sergio de Miguel, Francesc Baró, C. Sylvie Campagne, Vassiliki Vlami, Ilse R. Geijzendorffer, André Mascarenhas, Cláudia Carvalho-Santos, Mario V. Balzan, Lluís Brotons, Jeroen Arends, Ana Ruiz-Frau, Philip Roche, Alejandra Morán-Ordóñez, Stefano Targetti, Ioannis N. Vogiatzakis, Julia Santana-Garcon, José V. Roces-Díaz, Ana Martins Pinheiro, Evangelia G. Drakou, European Commission, Principado de Asturias, Generalitat de Catalunya, Balzan M.V., Pinheiro A.M., Mascarenhas A., Moran-Ordonez A., Ruiz-Frau A., Carvalho-Santos C., Vogiatzakis I.N., Arends J., Santana-Garcon J., Roces-Diaz J.V., Brotons L., Campagne C.S., Roche P.K., de Miguel S., Targetti S., Drakou E.G., Vlami V., Baro F., Geijzendorffer I.R., University of Malta, Partenaires INRAE, Forest Research Centre, School of Agriculture, Universidade de Lisboa (ULISBOA), Humboldt-Universität zu Berlin, Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Institut Mediterrani d'Estudis Avançats, Universidade do Porto, School of Pure and Applied Sciences, Ecosystem Services Partnership Regional Chapter South East Europe, Swansea University, Centre for Ecological Research and Forestry Applications (CREAF), Risques, Ecosystèmes, Vulnérabilité, Environnement, Résilience (RECOVER), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Department of Crop and Forest Science, Universitat de Lleida, Unité de recherche d'Écodéveloppement (ECODEVELOPPEMENT), Institut National de la Recherche Agronomique (INRA), Twente University of Technology, University of Patras [Patras], Institute of Environmental Science and Technology [Barcelona] (ICTA), Universitat Autònoma de Barcelona (UAB), Tour du Valat, Research Institute for the conservation of Mediterranean Wetlands, Geography, Sociology, Cosmopolis Centre for Urban Research, Balzan, Mario V., Targetti, Stefano, CENSE - Centro de Investigação em Ambiente e Sustentabilidade, Department of Geo-information Processing, UT-I-ITC-STAMP, and Faculty of Geo-Information Science and Earth Observation
- Subjects
Mediterranean climate ,sub-global assessments ,synergies ,ecosystem structure ,010504 meteorology & atmospheric sciences ,[SDV]Life Sciences [q-bio] ,Biodiversity ,010501 environmental sciences ,Management, Monitoring, Policy and Law ,Ecological systems theory ,01 natural sciences ,Mediterranean Basin ,[SHS]Humanities and Social Sciences ,pressure ,synergie ,Ecosystem ,Nadia Sitas ,lcsh:Human ecology. Anthropogeography ,Ecology, Evolution, Behavior and Systematics ,lcsh:Environmental sciences ,0105 earth and related environmental sciences ,Nature and Landscape Conservation ,Cultural influence ,lcsh:GE1-350 ,business.industry ,benefit ,Environmental resource management ,Trade offs ,DPSIR ,driversof change ,ecosystem condition ,drivers of change ,15. Life on land ,pressures ,Biodiversitat ,sub-globalassessments ,Geography ,trade-offs ,nadia sitas ,13. Climate action ,Automotive Engineering ,sub-global assessment ,lcsh:GF1-900 ,business ,ITC-GOLD ,biodiversity ,Mediterranean basin ,Nadia Sita - Abstract
Social-ecological systems in the Mediterranean Basin are characterised by high biodiversity and a prolonged cultural influence, leading to the co-evolution of these systems. The unique characteristics of Mediterranean social-ecological systems, current pressures leading to a decline in ecosystem services, and the need for coordinated action are recognised by policies promoting the protection and sustainable use of the region’s heritage. Ecosystem assessments provide valuable information on the capacity of the Mediterranean Basin to ensure the well-being of its population. However, most assessments simplify the complexity of these systems, which may lead to inaccurate ecosystem services supply and flow estimations. This paper uses the Driver-Pressure-State-Impact-Response (DPSIR) model to guide an expert consultation that identifies the key characteristics of the Mediterranean social-ecological systems and analyses how these should be included in ecosystem assessments. Data collection was carried out through expert consultation with ecosystem services researchers. Multiple sources of complexity were identified, including the relationship between historical human activities, biodiversity spatio-temporal patterns, as well as the seasonal and long-term variability in ecosystem services. The importance of incorporating this complexity in ecosystem assessments for evidence-based decision-making is identified, suggesting that there is a need to adapt assessment approaches for the Mediterranean Basin social-ecological systems., This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 809988. JVRD was supported by the Government of Asturias and FP7-Marie Curie-COFUND European Commission program (Grant ‘Clarín’ ACA17-02). SdM benefited from a Serra-Húnter Fellowship provided by the Generalitat of Catalonia.
- Published
- 2019
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