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| Moritz, Charlotte; Levesque, Melanie; Gravel, Dominique; Vaz, Sandrine; Archambault, Diane; Archambault, Philippe. |
| Correlative habitat models using relationships between marine organisms and their surrounding environment can be used to predict species distribution, and the results can assist management of human activities sharing the marine space (e.g. fisheries, MPAs, tourism). Here, epi-benthic megafauna was sampled at 755 stations in the Lower Estuary and Northern Gulf of St. Lawrence (EGSL) each summer between 2006 and 2009. We combined various types of multivariate analyses to 1) describe the structure and spatial distribution of benthic communities, 2) analyse the relationship between these communities and environmental parameters, and subsequently 3) build a community distribution model to predict the spatial distribution of the communities, creating community... |
| Tipo: Text |
Palavras-chave: Biodiversity; Epibenthic Communities; Estuary and Northern Gulf of St. Lawrence; Generalized Linear Model; Community Distribution Model; Redundancy Analysis. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00138/24972/23997.pdf |
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| Jacquet, Claire; Moritz, Charlotte; Morissette, Lyne; Legagneux, Pierre; Massol, Francois; Archambault, Philippe; Gravel, Dominique. |
| Understanding the mechanisms responsible for stability and persistence of ecosystems is one of the greatest challenges in ecology. Robert May showed that, contrary to intuition, complex randomly built ecosystems are less likely to be stable than simpler ones. Few attempts have been tried to test May's prediction empirically, and we still ignore what is the actual complexity-stability relationship in natural ecosystems. Here we perform a stability analysis of 116 quantitative food webs sampled worldwide. We find that classic descriptors of complexity (species richness, connectance and interaction strength) are not associated with stability in empirical food webs. Further analysis reveals that a correlation between the effects of predators on prey and those... |
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| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00626/73761/74240.pdf |
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