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Auteur Martin Hermy |
Documents disponibles écrits par cet auteur (3)
Affiner la rechercheEffects of landscape structure on the invasive spread of black cherry Prunus serotina in an agricultural landscape in Flanders, Belgium / Bart Deckers in Ecography, 28 (2005)
Titre : Effects of landscape structure on the invasive spread of black cherry Prunus serotina in an agricultural landscape in Flanders, Belgium Type de document : Imprimé Auteurs : Bart Deckers ; Kris Verheyen ; Martin Hermy ; Bart Muys Année de publication : 2005 Article en page(s) : 99-109 Langues : Français (fre) Catégories : [CBNPMP-Thématique] Plantes subspontanées, naturalisées, envahissantes Mots-clés : Prunus serotina Ehrh. Résumé : Analysing invasive spread from a landscape ecological perspective forms an important challenge in plant invasion ecology. The present study examines the effects of landscape structure on the spatial and temporal dynamics of an expanding black cherry Prunus serotina population within a rural landscape in Flanders, Belgium, carrying a dense network of interconnected hedgerows. The study area, 251 ha in size, harboured a total of 2962 P. serotina individuals. The population was characterised by a negative exponential age distribution, a high growth rate and an early and continuous reproduction throughout the species’ life cycle. The historical rate of spread of the species through the hedgerow network progressively increased with time, especially during the last decade. Spatial point pattern analysis revealed that the individuals had a significantly clustered distribution pattern and were spatially aggregated around seed sources, hedgerow intersections and roosting trees. Logistic regression analysis confirmed the effect of landscape structure on P. serotina occurrence, suggesting directional long distance dispersal by avian dispersal vectors, resulting in a differential seed pressure throughout the hedgerow network due to the preference of dispersing birds for roosting in structurally rich hedgerow with large trees near hedgerow intersections. Hence, the distribution of P. serotina in agricultural landscapes was strongly mediated by dispersal processes. Furthermore, decreasing spatial aggregation along the species life cycle, with especially seedlings and saplings being significantly aggregated while adult individuals were mostly distributed at random, and a relative outward shift of seedling recruitment curves with time indicate density dependent mortality, probably caused by intraspecific competition. Lien pérenne : DOI : 10.1111/j.0906-7590.2005.04054.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=153272
in Ecography > 28 (2005) . - 99-109Deckers, Bart, Verheyen, Kris, Hermy, Martin, Muys, Bart 2005 Effects of landscape structure on the invasive spread of black cherry Prunus serotina in an agricultural landscape in Flanders, Belgium. Ecography, 28: 99-109.Documents numériques
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Titre : Forest herbs in the face of global change : a single-species-multiple-threats aproach for Anemone nemorosa Type de document : Imprimé Auteurs : Lander Baeten ; Pieter de Frenne ; Kris Verheyen ; Bente Jessen Graae ; Martin Hermy Année de publication : 2010 Article en page(s) : 19-30 Langues : Anglais (eng) Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=141265
in Plant Ecology and Evolution > 143 (1) (2010) . - 19-30Baeten, Lander, Frenne, Pieter de, Verheyen, Kris, Graae, Bente Jessen, Hermy, Martin 2010 Forest herbs in the face of global change : a single-species-multiple-threats aproach for Anemone nemorosa. Plant Ecology and Evolution, 143(1): 19-30.Exemplaires (1)
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Titre : Microclimate moderates plant responses to macroclimate warming Type de document : Imprimé Auteurs : Pieter de Frenne ; Francisco Rodríguez-Sánchez ; David Anthony Coomes ; Lander Baeten ; Gorik Verstraeten ; Mark Vellend ; Markus Bernhardt-Römermann ; Carissa D. Brown ; Jörg Brunet ; Johnny Cornelis ; Guillaume Decocq ; Hartmut Dierschke (1937-) ; Ove Eriksson ; Frank S. Gilliam ; Radim Hédl ; Thilo Heinken ; Martin Hermy ; Patrick Hommel ; Michael A. Jenkins ; Daniel L. Kelly ; Keith Kirby ; Fraser J. G. Mitchell ; Tobias Naaf ; Miles Newman ; George Peterken ; Petr Petrik ; Jan Schultz ; Grégory Sonnier ; Hans Van Calster ; Donald M. Waller ; Gian-Reto Walther ; Peter White ; Kerry D. Woods ; Monika Wulf ; Bente Jessen Graae ; Kris Verheyen Année de publication : 2013 Article en page(s) : 18561-18565 Langues : Anglais (eng) Résumé : Signifiance : Around the globe, climate warming is increasing the dominance of warm-adapted species—a process described as “thermophilization.” However, thermophilization often lags behind warming of the climate itself, with some recent studies showing no response at all. Using a unique database of more than 1,400 resurveyed vegetation plots in forests across Europe and North America, we document significant thermophilization of understory vegetation. However, the response to macroclimate warming was attenuated in forests whose canopies have become denser. This microclimatic effect likely reflects cooler forest-floor temperatures via increased shading during the growing season in denser forests. Because standing stocks of trees have increased in many temperate forests in recent decades, microclimate may commonly buffer understory plant responses to macroclimate warming.
Abstract : Recent global warming is acting across marine, freshwater, and terrestrial ecosystems to favor species adapted to warmer conditions and/or reduce the abundance of cold-adapted organisms (i.e., “thermophilization” of communities). Lack of community responses to increased temperature, however, has also been reported for several taxa and regions, suggesting that “climatic lags” may be frequent. Here we show that microclimatic effects brought about by forest canopy closure can buffer biotic responses to macroclimate warming, thus explaining an apparent climatic lag. Using data from 1,409 vegetation plots in European and North American temperate forests, each surveyed at least twice over an interval of 12–67 y, we document significant thermophilization of ground-layer plant communities. These changes reflect concurrent declines in species adapted to cooler conditions and increases in species adapted to warmer conditions. However, thermophilization, particularly the increase of warm-adapted species, is attenuated in forests whose canopies have become denser, probably reflecting cooler growing-season ground temperatures via increased shading. As standing stocks of trees have increased in many temperate forests in recent decades, local microclimatic effects may commonly be moderating the impacts of macroclimate warming on forest understories. Conversely, increases in harvesting woody biomass—e.g., for bioenergy—may open forest canopies and accelerate thermophilization of temperate forest biodiversityLien pérenne : DOI : 10.1073/pnas.1311190110 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=149290
in Proceedings of the National Academy of Sciences of the United States of America > 110 (46) (2013) . - 18561-18565Frenne, Pieter de, Rodríguez-Sánchez, Francisco, Coomes, David Anthony, Baeten, Lander, Verstraeten, Gorik, Vellend, Mark, Bernhardt-Römermann, Markus, Brown, Carissa D., Brunet, Jörg, Cornelis, Johnny, Decocq, Guillaume, Dierschke, Hartmut (1937-), Eriksson, Ove, Gilliam, Frank S., Hédl, Radim, Heinken, Thilo, Hermy, Martin, Hommel, Patrick, Jenkins, Michael A., Kelly, Daniel L., Kirby, Keith, Mitchell, Fraser J. G., Naaf, Tobias, Newman, Miles, Peterken, George, Petrik, Petr, Schultz, Jan, Sonnier, Grégory, Calster, Hans Van, Waller, Donald M., Walther, Gian-Reto, White, Peter, Woods, Kerry D., Wulf, Monika, Graae, Bente Jessen, Verheyen, Kris 2013 Microclimate moderates plant responses to macroclimate warming. Proceedings of the National Academy of Sciences of the United States of America, 110(46): 18561-18565.Documents numériques
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