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4 results on '"Garófano-Gómez, Virginia"'

1. Populus nigra L. establishment and fluvial landform construction: biogeomorphic dynamics within a channelized river

Author

Corenblit, Dov Jean-François, Steiger, Johannes, Charrier, Gaspard, Darrozes, José, Garófano-Gómez, Virginia, Garreau, Alexandre, González, Eduardo, Gurnell, Angela M., Hortobágyi, Borbála, Julien, Frédéric, Lambs, Luc, Larrue, Sébastien, Otto, Thierry, Roussel, Erwan, Vautier, Franck, Voldoire, Olivier, Laboratoire de Géographie Physique et Environnementale (GEOLAB), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Université Clermont Auvergne (UCA)-Institut Sciences de l'Homme et de la Société (IR SHS UNILIM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Géosciences Environnement Toulouse (GET), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD), Laboratoire Ecologie Fonctionnelle et Environnement (ECOLAB), Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Department of Biological Sciences [Denver], University of Denver, School of Geography, Queen Mary University of London, Maison des Sciences de l'Homme de Clermont-Ferrand (MSH Clermont), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut Sciences de l'Homme et de la Société (IR SHS UNILIM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Université Clermont Auvergne (UCA), Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Recherche pour le Développement (IRD)-Centre National d'Études Spatiales [Toulouse] (CNES), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Maison des Sciences de l'Homme - Clermont Ferrand (MSH Clermont), Centre National de la Recherche Scientifique (CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut Sciences de l'Homme et de la Société (IR SHS UNILIM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Laboratoire Ecologie Fonctionnelle et Environnement (LEFE), Université de Toulouse (UT)-Université de Toulouse (UT)-Observatoire Midi-Pyrénées (OMP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), and Université de Toulouse (UT)

Subjects
ecosystem engineer, vegetation establishment, [SDV]Life Sciences [q-bio], [SDE]Environmental Sciences, black poplar, biogeomorphology, fluvial landform
Abstract

International audience; Populations of the riparian pioneer species Populus nigra L. which establish on alluvial bars within river channelsmodulate sediment dynamics and fluvial landforms. Dense cohorts of P. nigra have colonized gravel point bars along the channelizedRiver Garonne, France, during the last 20 years and have enhanced the vertical, lateral and longitudinal development of thebars. For this period, the geomorphic characteristics of two wooded point bars on this laterally stable river are closely linked tothe spatial distribution and intensity of establishment and resistance of different cohorts of P. nigra. Furthermore, P. nigra colonizationdynamics were controlled by engineer effects of this same species. This relationship is illustrated by a significant correlation betweenkey geomorphic and biological variables measured in situ and characterized with a set of four aerial photographs taken between2000 and 2010. The development of wooded point bars, which are discrete biogeomorphic units, over the studied period, appearto result from a specific biogeomorphic positive feedback of matter aggregation and vegetation establishment related to sedimenttrapping and stabilization by pioneer engineer plants.We propose a conceptual model of biogeomorphic unit construction for channelized,lateral stable rivers.We consider the resultant biogeomorphic units as functional from an ecological point of view because P.nigra enhances at the cohort scale (i) its own inherent capacity to resist hydrogeomorphic disturbances, and (ii) its resilience capacityas a result of successful colonization, especially downstream of mature poplar stands.

Published
2016

2. Engineer pioneer plants respond to and affect geomorphic constraints similarly along water–terrestrial interfaces world-wide

Author

Corenblit, Dov Jean-François, Baas, Andreas, Balke, Thorsten, Bouma, Tjeerd, Fromard, François, Garófano-Gómez, Virginia, González, Eduardo, Gurnell, Angela M., Hortobágyi, Borbála, Julien, Frédéric, Kim, Daehyun, Lambs, Luc, Stallins, J. Anthony, Steiger, Johannes, Tabacchi, Eric, Walcker, Romain, Laboratoire de Géographie Physique et Environnementale (GEOLAB), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Université Clermont Auvergne (UCA)-Institut Sciences de l'Homme et de la Société (IR SHS UNILIM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Department of geography [London], King‘s College London, Institute of Biology and Environmental Science, Carl von Ossietzky University Oldenburg, Royal Netherlands Institute for Sea Research (NIOZ), Laboratoire Ecologie Fonctionnelle et Environnement (ECOLAB), Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Department of Biological Sciences [Denver], University of Denver, School of Geography, Queen Mary University of London, University of Kentucky, Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut Sciences de l'Homme et de la Société (IR SHS UNILIM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA), Laboratoire Ecologie Fonctionnelle et Environnement (LEFE), Université de Toulouse (UT)-Université de Toulouse (UT)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), and University of Kentucky (UK)

Subjects
biogeomorphic ecosystem, [SDV.EE]Life Sciences [q-bio]/Ecology, environment, River, mangrove, Salt marsh, plant trait, river, biogeomorphic succession, Eco-evolutionary dynamics, [SDU.STU]Sciences of the Universe [physics]/Earth Sciences, eco-evolutionary dynamics, Biogeomorphic ecosystem, Plant trait, salt marsh, ecosystem engineer, [SDV.EE.ECO]Life Sciences [q-bio]/Ecology, environment/Ecosystems, coastal dune, Biogeomorphic succession, Ecosystem engineer, Niche construction, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, Mangrove, niche construction, Coastal dune
Abstract

Aim Within fluvial and coastal ecosystems world-wide, flows of water, wind and sediment generate a shifting landscape mosaic composed of bare substrate and pioneer and mature vegetation successional stages. Pioneer plant species that colonize these ecosystems at the land–water interface have developed specific traits in response to environmental constraints (response traits) and are able to modify habitat conditions by modulating geomorphic processes (effect traits). Changes in the geomorphic environment under the control of engineer plants often feed back to organism traits (feedback traits), and thereby ecosystem functioning, leading to eco-evolutionary dynamics. Here we explain the joint foundations of fluvial and coastal ecosystems according to feedback between plants and the geomorphic environment.LocationDynamic fluvial and coastal ecosystems world-wide. Method Drawing from a pre-existing model of ‘fluvial biogeomorphic succession’, we propose a conceptual framework showing that fluvial and coastal ‘biogeomorphic ecosystems’ are functionally similar due to eco-evolutionary feedbacks between plants and geomorphology.ResultsThe relationships between plant traits and their geomorphic environments within different fluvial and coastal biogeomorphic ecosystems are identified and classified within a framework of biogeomorphic functional similarity according to three criteria: (1) pioneer plants develop specific responses to the geomorphic environment; (2) engineer plants modulate the geomorphic environment; (3) geomorphic changes under biotic control within biogeomorphic ecosystems feed back to organisms.Main conclusionsThe conceptual framework of functional similarity proposed here will improve our capacity to analyse, compare, manage and restore fluvial and coastal biogeomorphic ecosystems world-wide by using the same protocols based on the three criteria and four phases of the biogeomorphic succession model.

Published
2015

3. Interactions between vegetation and river morphodynamics. Part I: Research clarifications and challenges.

Author

Corenblit, Dov, Piégay, Hervé, Arrignon, Florent, González-Sargas, Eduardo, Bonis, Anne, Davies, Neil S., Ebengo, Dav M., Garófano-Gómez, Virginia, Gurnell, Angela M., Henry, Annie L., Hortobágyi, Borbála, Martínez-Capel, Francisco, Steiger, Johannes, Tabacchi, Eric, Tooth, Stephen, Vautier, Franck, and Walcker, Romain

Subjects
*BRAIDED rivers, *GEOMORPHOLOGY, *RIPARIAN plants, *PLANT variation, *ENGINEERS
Abstract

Rivers have an intricate relationship with the vegetation that colonizes them. Riparian plants, capable of thriving within river corridors, both respond to and influence geomorphology. Yet interactions between river morphodynamics and vegetation tend to be context specific, making it challenging to generalize findings between locations. The current comprehension of vegetation interaction with physical processes, and especially its effects on river morphodynamics, still lacks clarity. This article examines numerous sources of variation in plant responses to, and effects on, river morphodynamics. Vegetation influences on geomorphological parameters vary in terms of intensity and spatial extent along the gradient of river energy and according to the fluvial style. Whilst feedbacks between vegetation and river morphodynamics are readily discernible at a local scale, on larger spatial scales, it can remain difficult to precisely determine cause-and-effect relationships that link hydrogeomorphic and vegetation drivers and the outcomes of their feedbacks. This is especially problematic for those feedbacks that give rise to emergent system landscape behaviour in meandering and island braided rivers. By contrast, in certain river configurations, such as anabranching rivers, the imprint of vegetation on the riverscape can be clearly evident. The imprint of vegetation is also supported by evidence from the ancient alluvial record. Through this review, we highlight key perspectives from a wide range of modern and ancient rivers of varied configuration in order to inform future studies of vegetation responses to, and effects on, river morphodynamics. • Vegetation responses to, and effects on, river morphodynamics are modulated by environmental and biological contexts. • Vegetation-geomorphology interactions are embedded into a complex adaptive system. • Vegetation drives discernible scale-dependent effects on geomorphology at the local scale (10-1 - 102 m). • Large scales: determining cause-and-effect relationships linking hydrogeomorphic and vegetation drivers remains challenging. • Vegetation: Insufficient but Non-redundant parts of Unnecessary but Sufficient (INUS) conditions for various river types. [ABSTRACT FROM AUTHOR]

Published
2024
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4. Seed retention by pioneer trees enhances plant diversity resilience on gravel bars: Observations from the river Allier, France.

Author

Corenblit, Dov, Vidal, Vincent, Cabanis, Manon, Steiger, Johannes, Garófano-Gómez, Virginia, Garreau, Alexandre, Hortobágyi, Borbála, Otto, Thierry, Roussel, Erwan, and Voldoire, Olivier

Subjects
*PLANT diversity, *ECOLOGICAL resilience, *GRAVEL, *RIPARIAN plants
Abstract

Pioneer riparian trees which establish in river active tracts on gravel bars enhance fine sediment retention during high flows within their stands and in their lee side, forming obstacle marks. Fine sediment retention can be accompanied by deposition of seeds transported by water dispersal, i.e. by hydrochory. We tested the hypothesis that pioneer riparian trees significantly control seed deposition on gravel bars by forming sediment obstacle marks. We described the seed bank structure and compared samples collected from obstacle marks and bare coarse-grained bar surfaces. At the surface (at 2 cm depth), seed abundance ( N ) and richness ( S ) (expressed as mean ± sd) were significantly higher in areas directly affected by riparian trees, i.e. obstacle marks, ( N : 693 ± 391; S : 17 ± 3) than in bare surfaces ( N : 334 ± 371; S : 13 ± 5). Surface and sub-surface (at 20 cm depth) samples were also significantly different, with the sub-surface samples almost devoid of seeds (respectively N : 514 ± 413; S : 15 ± 5 and N : 3 ± 6; S : 1 ± 2). These results suggest a biogeomorphic feedback between sediment and associated seed retention mediated by hydrochory, vegetation growth and local seed dispersal mediated by barochory. Such feedback may improve plant diversity resilience on gravel alluvial bars of high-energy rivers. [ABSTRACT FROM AUTHOR]

Published
2016
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