| Enregistrements |
Auteur  |
Cheng, L.; Blanchet, S.; Loot, G.; Villeger, S.; Zhang, T.; Lek, S.; Lek-Ang, S.; Li, Z. |
| Titre |
Temporal changes in the taxonomic and functional diversity of fish communities in shallow Chinese lakes: the effects of river–lake connections and aquaculture |
Type |
Article scientifique |
| Année |
2014 |
Publication |
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Revue Abrégée |
Aquatic Conservation: Marine and Freshwater Ecosystems |
| Volume |
24 |
Numéro |
1 |
Pages |
23-34 |
| Mots-Clés |
biodiversity loss; biotic homogenization; Functional richness; lakes; Yangtze River basin |
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| ISSN |
1099-0755 |
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pas de |
| Numéro d'Appel |
MARBEC @ alain.herve @ |
collection |
1160 |
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| Auteur |
Chong-Robles, J.; Charmantier, G.; Boulo, V.; Lizárraga-Valdéz, J.; Enríquez-Paredes, L.M.; Giffard-Mena, I. |
| Titre |
Osmoregulation pattern and salinity tolerance of the white shrimp Litopenaeus vannamei (Boone, 1931) during post-embryonic development |
Type |
Article scientifique |
| Année |
2014 |
Publication |
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Revue Abrégée |
Aquaculture |
| Volume |
422–423 |
Numéro |
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Pages |
261-267 |
| Mots-Clés |
Crustacean; Hypo–hyper osmoregulation; Larvae; Osmotic pressure; Osmotic stress; survival |
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0044-8486 |
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MARBEC @ isabelle.vidal-ayouba @ |
collection |
756 |
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| Auteur |
Christensen, V.; Coll, M.; Piroddi, C.; Steenbeek, J.; Buszowski, J.; Pauly, D. |
| Titre |
A century of fish biomass decline in the ocean |
Type |
Article scientifique |
| Année |
2014 |
Publication |
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Revue Abrégée |
Mar Ecol Prog Ser |
| Volume |
512 |
Numéro |
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Pages |
155-166 |
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ABSTRACT: We performed a global assessment of how fish biomass has changed over the last 100 yr, applying a previously developed methodology using ecological modeling. Our assessment built on more than 200 food web models representing marine ecosystems throughout the world covering the period from 1880 to 2007. All models were constructed based on the same approach, and have been previously documented. We spatially and temporally distributed fish biomasses delivered by these models based on fish habitat preferences, ecology, and feeding conditions. From these distributions, we extracted over 68000 estimates of biomass (for predatory and prey fishes separately, including trophic level of 3.5 or higher, and trophic level between 2.0 and 3.0, respectively), and predicted spatial-temporal trends in fish biomass using multiple regression. Our results predicted that the biomass of predatory fish in the world oceans has declined by two-thirds over the last 100 yr. This decline is accelerating, with 54% occurring in the last 40 yr. Results also showed that the biomass of prey fish has increased over the last 100 yr, likely as a consequence of predation release. These findings allowed us to predict that there will be fish in the future ocean, but the composition of fish assemblages will be very different from current ones, with small prey fish dominating. Our results show that the trophic structure of marine ecosystems has changed at a global scale, in a manner consistent with fishing down marine food webs. |
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LL @ pixluser @ |
collection |
379 |
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| Auteur |
Christensen, V.; Coll, M.; Steenbeek, J.; Buszowski, J.; Chagaris, D.; Walters, C.J. |
| Titre |
Representing Variable Habitat Quality in a Spatial Food Web Model |
Type |
Article scientifique |
| Année |
2014 |
Publication |
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Revue Abrégée |
Ecosystems |
| Volume |
17 |
Numéro |
8 |
Pages |
1397-1412 |
| Mots-Clés |
Ecology; Ecopath; ecospace; Environmental Management; food web model; foraging capacity model; Geoecology/Natural Processes; habitat modeling; Hydrology/Water Resources; Plant Sciences; sampling; simulation model; species distribution model; Zoology |
| Résumé |
Why are marine species where they are? The scientific community is faced with an urgent need to understand aquatic ecosystem dynamics in the context of global change. This requires development of scientific tools with the capability to predict how biodiversity, natural resources, and ecosystem services will change in response to stressors such as climate change and further expansion of fishing. Species distribution models and ecosystem models are two methodologies that are being developed to further this understanding. To date, these methodologies offer limited capabilities to work jointly to produce integrated assessments that take both food web dynamics and spatial-temporal environmental variability into account. We here present a new habitat capacity model as an implementation of the spatial-temporal model Ecospace of the Ecopath with Ecosim approach. The new model offers the ability to drive foraging capacity of species from the cumulative impacts of multiple physical, oceanographic, and environmental factors such as depth, bottom type, temperature, salinity, oxygen concentrations, and so on. We use a simulation modeling procedure to evaluate sampling characteristics of the new habitat capacity model. This development bridges the gap between envelope environmental models and classic ecosystem food web models, progressing toward the ability to predict changes in marine ecosystems under scenarios of global change and explicitly taking food web direct and indirect interactions into account. |
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Éditeur |
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| Langue |
en |
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1432-9840, 1435-0629 |
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MARBEC @ isabelle.vidal-ayouba @ |
collection |
1196 |
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| Auteur |
Chu, T.V.; Torréton, J.-P.; Mari, X.; Nguyen, H.M.T.; Pham, K.T.; Pham, T.T.; Bouvier, T.; Bettarel, Y.; Pringault, O.; Bouvier, C.; Rochelle-Newall, E. |
| Titre |
Nutrient ratios and the complex structure of phytoplankton communities in a highly turbid estuary of Southeast Asia |
Type |
Article scientifique |
| Année |
2014 |
Publication |
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Revue Abrégée |
Environ Monit Assess |
| Volume |
186 |
Numéro |
12 |
Pages |
8555-8572 |
| Mots-Clés |
Hab; Phytoplankton diversity; Southeast Asia; vietnam |
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English |
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| ISSN |
0167-6369 |
ISBN |
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Approuvé |
pas de |
| Numéro d'Appel |
MARBEC @ alain.herve @ |
collection |
1161 |
| Lien permanent pour cet enregistrement |
