7 results on '"Marcos Paulo Figueiredo-Barros"'
Search Results
2. Species identity and diversity effects on invasion resistance of tropical freshwater plant communities
- Author
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Casper H. A. van Leeuwen, Elisabeth S. Bakker, Antonella Petruzzella, Marcos Paulo Figueiredo-Barros, Tauany A. da S. S. R. Rodrigues, Francisco de Assis Esteves, and Aquatic Ecology (AqE)
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0106 biological sciences ,Biochemical Phenomena ,Population Dynamics ,Biodiversity ,lcsh:Medicine ,Introduced species ,Fresh Water ,Hydrocharitaceae ,Biology ,010603 evolutionary biology ,01 natural sciences ,Invasive species ,Article ,Biomass ,Community ecology ,lcsh:Science ,Ecosystem ,Phylogeny ,Multidisciplinary ,Resistance (ecology) ,Ecology ,010604 marine biology & hydrobiology ,lcsh:R ,food and beverages ,Plant community ,Native plant ,Colonisation ,international ,Freshwater ecology ,lcsh:Q ,Species richness ,Plan_S-Compliant_OA ,Introduced Species - Abstract
Biotic resistance mediated by native plant diversity has long been hypothesized to reduce the success of invading plant species in terrestrial systems in temperate regions. However, still little is known about the mechanisms driving invasion patterns in other biomes or latitudes. We help to fill this gap by investigating how native plant community presence and diversity, and the presence of native phylogenetically closely related species to an invader, would affect invader Hydrilla verticillata establishment success in tropical freshwater submerged plant communities. The presence of a native community suppressed the growth of H. verticillata, but did not prevent its colonisation. Invader growth was negatively affected by native plant productivity, but independent of native species richness and phylogenetic relatedness to the invader. Native plant production was not related to native species richness in our study. We show that resistance in these tropical aquatic submerged plant communities is mainly driven by the presence and biomass of a native community independent of native species diversity. Our study illustrates that resistance provided by these tropical freshwater submerged plant communities to invasive species contrasts to resistance described for other ecosystems. This emphasizes the need to include understudied systems when predicting patterns of species invasiveness and ecosystem invasibility across biomes.
- Published
- 2019
3. Weak to no effects of litter biomass and mixing on litter decomposition in a seasonally dry tropical forest
- Author
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Marcos Paulo Figueiredo-Barros, Sylvain Coq, Anderson da Rocha Gripp, Alexandru Milcu, Rafael D. Guariento, Adriano Caliman, Francisco de Assis Esteves, Luciana S. Carneiro, Centre d’Ecologie Fonctionnelle et Evolutive (CEFE), Institut de Recherche pour le Développement (IRD [France-Sud])-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE)-Université de Montpellier (UM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université Paul-Valéry - Montpellier 3 (UM3), Écotron Européen de Montpellier - UPS 3248, Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Université Paul-Valéry - Montpellier 3 (UPVM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut de Recherche pour le Développement (IRD [France-Sud]), and Écotron Européen de Montpellier
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0106 biological sciences ,Biomass (ecology) ,Field experiment ,Chemical process of decomposition ,Soil Science ,15. Life on land ,Plant litter ,010603 evolutionary biology ,01 natural sciences ,Decomposition ,Agronomy ,13. Climate action ,Litter ,Environmental science ,Composition (visual arts) ,Ecosystem ,[SDE.BE]Environmental Sciences/Biodiversity and Ecology ,Ecology, Evolution, Behavior and Systematics ,ComputingMilieux_MISCELLANEOUS ,010606 plant biology & botany - Abstract
Leaf litter mixtures and the amount of litter biomass in the litter standing stocks can affect the decomposition rates by modifying physical properties and resource heterogeneity in the litter layers. However, the potential interactive effects of litter mixtures and the amount of litter biomass on decomposition have been overlooked in the literature, even though both aspects of litter layer may be highly variable in space and time, within and across ecosystems. In a field experiment conducted in a seasonally dry tropical forest (also known as restinga forest), we investigated the individual and interactive effects of litter mixing and litter biomass on the decomposition of leaf litter from four species of trees, at both species- and assemblage-level. We hypothesized that the mixing of litter and higher litter biomass would both promote litter decomposition, and that litter mixture effects on decomposition at assemblage- and species specific-level would be stronger under higher litter biomass. Mixing of litter and the amount of litter in the standing stocks had no significant individual effects on decomposition, neither at the assemblage- or species specific-level. However, we observed an interactive effect between both experimental factors for the decomposition of a single species, where, contrary to our predictions, the decomposition of Andira legalis at low litter biomass was slightly reduced in the litter mixture. Our results indicate that litter decomposition in the restinga ecosystem should be highly predictable with knowledge of species composition and species-specific decomposition rates, and suggest that, at least for seasonally dry tropical ecosystems, the mixing of litter may have only a small effect on the decomposition process.
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- 2018
4. Interactive effects of climate change and biodiversity loss on ecosystem functioning
- Author
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Marcos Paulo Figueiredo-Barros, A. Andrew M. MacDonald, Aliny P. F. Pires, Diane S. Srivastava, Vinicius F. Farjalla, and Nicholas A. C. Marino
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0106 biological sciences ,Ecology ,010604 marine biology & hydrobiology ,Climate Change ,Detritivore ,Biodiversity ,Climate change ,010603 evolutionary biology ,01 natural sciences ,Plant Leaves ,Interactive effects ,Effects of global warming ,Dominance (ecology) ,Environmental science ,Ecosystem ,sense organs ,skin and connective tissue diseases ,human activities ,Ecology, Evolution, Behavior and Systematics - Abstract
Climate change and biodiversity loss are expected to simultaneously affect ecosystems, however research on how each driver mediates the effect of the other has been limited in scope. The multiple stressor framework emphasizes non-additive effects, but biodiversity may also buffer the effects of climate change, and climate change may alter which mechanisms underlie biodiversity-function relationships. Here, we performed an experiment using tank bromeliad ecosystems to test the various ways that rainfall changes and litter diversity may jointly determine ecological processes. Litter diversity and rainfall changes interactively affected multiple functions, but how depends on the process measured. High litter diversity buffered the effects of altered rainfall on detritivore communities, evidence of insurance against impacts of climate change. Altered rainfall affected the mechanisms by which litter diversity influenced decomposition, reducing the importance of complementary attributes of species (complementarity effects), and resulting in an increasing dependence on the maintenance of specific species (dominance effects). Finally, altered rainfall conditions prevented litter diversity from fueling methanogenesis, because such changes in rainfall reduced microbial activity by 58%. Together, these results demonstrate that the effects of climate change and biodiversity loss on ecosystems cannot be understood in isolation and interactions between these stressors can be multifaceted.
- Published
- 2017
5. Life cycle, secondary production and nutrient stock in Heleobia australis (d'Orbigny 1835) (Gastropoda: Hydrobiidae) in a tropical coastal lagoon
- Author
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João José Fonseca Leal, Marcos Paulo Figueiredo-Barros, Francisco de Assis Esteves, Reinaldo Luiz Bozelli, and Adriana de Melo Rocha
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chemistry.chemical_classification ,Hydrology ,education.field_of_study ,Nutrient cycle ,business.industry ,Population ,Sewage ,Aquatic Science ,Biology ,Oceanography ,Nutrient ,chemistry ,Dry weight ,Littoral zone ,Ecosystem ,Organic matter ,business ,education - Abstract
The aim of this research was to evaluate density, biomass, life cycle, secondary production and nutrient stock of Heleobia australis population (d'Orbigny 1835) in a coastal tropical lagoon (Imboassica lagoon). Carbon (C), nitrogen (N), phosphorus (P) and organic matter (OM) concentrations in the sediment were determined in order to evaluate their influence on the density, biomass and concentrations of C, N, P and OM in the biomass of H. australis population. Two sampling stations were established: one in the central part of the lagoon (station 1, not influenced directly by sewage release) and the second near the littoral region (station 2, close to the outlet of a canal discharging domestic sewage). Triplicate samples were collected monthly for one year (from May 1999 to April 2000) with a “core” sampler for determination of density, biomass, life cycle and secondary production of H. australis . For determination of C, N, P and OM in both sediment and H. australis , the samples were carried out in May and November 1999, and in April 2000. Density was significantly lower at station 1, whereas biomass did not differ significantly between the stations. Secondary production at station 1 was 28.33 g ash-free dry weight (AFDW) m −2 year −1 and at station 2 it was 49.36 g (AFDW) m −2 year −1 . The concentrations of OM, C and P in the sediment and N and P in the biomass of the organisms were higher at station 2. The release of domestic effluents into this lagoon results in an increase in OM, C and P concentrations in the sediment which are reflected in H. australis chemical composition. Considering the high densities, biomass and N and P content of these snails in Imboassica lagoon, their importance for the nutrient cycling in this ecosystem must be accounted.
- Published
- 2006
6. Rehabilitation of a bauxite tailing substrate in Central Amazonia: The effect of litter and seed addition on flood-prone forest restoration
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Marcos Paulo Figueiredo-Barros, Ricardo M. Darigo, André T. C. Dias, Luiz Roberto Zamith, Francisco de Assis Esteves, Fábio Roland, Maria Fernanda Quintela Souza Nunes, Heraldo F. dos Santos, Reinaldo Luiz Bozelli, Fabio Rubio Scarano, Animal Ecology, and Amsterdam Global Change Institute
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Ecology ,biology ,fungi ,Growing season ,food and beverages ,Vegetation ,biology.organism_classification ,Forest restoration ,Agronomy ,Seedling ,Litter ,Environmental science ,Ecosystem ,Species richness ,Restoration ecology ,Ecology, Evolution, Behavior and Systematics ,Nature and Landscape Conservation - Abstract
Impacts of mining activity can be particularly difficult to remediate in wetland ecosystems subject to inundation pulses due to the reduced length of the plant growing season. We used a factorial experiment to test whether litter and seed addition could be used to increase the efficiency of ecological restoration on a flood-prone forest (known as igapó) impacted by deposition of bauxite tailings. Our results clearly showed that the addition of litter collected from pristine igapó areas increased plant growth, seedling density, and seedling species richness. The increase in individual plant growth was echoed at the community level with higher leaf area index values on litter addition plots compared to controls. Litter addition can enhance reaccumulation of nutrient pools during successional development, which has been proposed as an important feature to ensure self-sustainability of areas under restoration. The success of the seed addition treatment depended on the species used. Of the seven sown species, only Acosmium nitens (a leguminous nitrogen-fixing species) showed high establishment. The introduction of nitrogen-fixing species is also expected to build up the nitrogen pool in the system as has been reported for restoration programs in non-inundated forests. These practices have the advantage, compared to direct fertilizing, of not causing eutrophication of water bodies when applied to flood-prone vegetation. © 2011 Society for Ecological Restoration International.
- Published
- 2012
7. Interactive effects of environmental variability and human impacts on the long-term dynamics of an Amazonian floodplain lake and a South Atlantic coastal lagoon
- Author
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Jayme M. Santangelo, Francisco de Assis Esteves, Marcos Paulo Figueiredo-Barros, Leticia Barbosa Quesado, Luciana S. Carneiro, Rafael D. Guariento, João José Fonseca Leal, Claudio Cardoso Marinho, Adriano Caliman, Paloma M. Lopes, Reinaldo Luiz Bozelli, Fábio Roland, Adriana de Melo Rocha, and Vinicius F. Farjalla
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geography ,geography.geographical_feature_category ,Floodplain ,Ecology ,Aquatic ecosystem ,Shallow lakes ,Amazonian lakes ,Aquatic Science ,Freshwater ecosystem ,Siltation ,Water column ,Benthic zone ,Coastal lagoons ,Environmental science ,Ecosystem ,Environmental drivers ,Species richness ,Freshwater conservation ,Multiple stressors ,Community stability - Abstract
Human activities are exposing freshwater ecosystems to a wide range of stressors, whose direct and indirect effects can be alleviated or exacerbated through interactive effects with dynamic environmental drivers. This study used long-term data from two Neotropical lacustrine freshwater systems (Batata Lake, an Amazonian floodplain lake and Imboassica lagoon, an Atlantic coastal lagoon) subjected to different kinds of environmental fluctuations (i.e., flood pulse and sandbar opening) and anthropogenic impacts (i.e., siltation and eutrophication). Our objective was to determine whether the effects of human perturbations are contingent on modifications of important biotic and abiotic characteristics through environmental variability. For both ecosystems, environmental variability consistently interacted with anthropogenic perturbations to alter most of the variables analyzed, such as nutrient dynamics, chlorophyll- a concentration, zooplankton and benthic invertebrate species richness, and temporal community stability, which indicates that interactive effects between environmental variability and anthropogenic perturbations may impact a myriad of ecosystem properties. Furthermore, the nature of these interactive effects was highly dependent on the variable considered and on the ecosystem analyzed. For example, at Imboassica lagoon, sandbar openings interacted synergistically with trophic state to increase the phosphorus concentration in the water column. At Batata Lake, flooding generally alleviated the negative effects of siltation on species richness by both diluting inorganic suspended material concentration and by promoting local recruitment from the regional species pool. Such results indicate that our ability to understand and predict the outcome of anthropogenic impacts on inland aquatic systems can be hampered if we consider human stressors as “static” phenomena disconnected from dynamic interactions with major local environmental drivers.
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