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| Cauvy-fraunié, Sophie; Trenkel, Verena; Daufresne, Martin; Maire, Anthony; Capra, Hervé; Olivier, Jean-michel; Lobry, Jérémy; Cazelles, Bernard; Lamouroux, Nicolas. |
| Long-term ecological surveys (LTES) often exhibit strong variability among sampling dates. The use and interpretation of such interannual variability is challenging due to the combination of multiple processes involved and sampling uncertainty. Here, we analysed the interannual variability in ~30 years of 150 species-density (fish and invertebrate) and environmental-observation time series in four aquatic-systems (stream, river, estuary, and marine continental shelf) with different sampling efforts to identify the information provided by this variability. We tested, using two empirical methods, whether we could observe simultaneous fluctuation between detrended time series corresponding to widely acknowledged assumptions about aquatic population dynamics:... |
| Tipo: Text |
Palavras-chave: Long-term ecological surveys (LTES); Aquatic species (stream -river-estuary- marine); Interannual variability; Symbolic analyses; Sampling efficiency. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00606/71805/70293.pdf |
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| Murgier, Juliette; Mclean, Matthew; Maire, Anthony; Mouillot, David; Loiseau, Nicolas; Munoz, François; Violle, Cyrille; Auber, Arnaud. |
| Functionally distinct species (i.e. species with unique trait combinations in the community) can support important ecological roles and contribute disproportionately to ecosystem functioning. Yet, how functionally distinct species have responded to recent climate change and human exploitation has been widely overlooked. Here, using ecological traits and long-term fish data in the North Sea, we identified functionally distinct and functionally common species, and evaluated their spatial andtemporaldynamics in relation to environmental variables and fishing pressure. Functionally distinct specieswere characterized by late sexualmaturity, few, large offspring, and high parental care,many being sharks and skates that play critical roles in structuring food... |
| Tipo: Text |
Palavras-chave: Functional diversity; Ecological trait; Fisheries; Global change; Ecosystem functioning; Conservation. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00668/78019/80270.pdf |
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