Consulta: creatorFacets:"Velez, Laure"
Registros recuperados: 14
Data/hora: 10/06/2024 10:01:01

FishMed: traits, phylogeny, current and projected species distribution of Mediterranean fishes, and environmental data
Provedor de dados: 5
Autores: Albouy, Camille; Lasram, Frida Ben Rais; Velez, Laure; Guilhaumon, François; Meynard, Christine N.; Boyer, Séverine; Benestan, Laura; Mouquet, Nicolas; Douzery, Emmanuel; Aznar, Roland; Troussellier, Marc; Somot, Samuel; Leprieur, Fabien; Le Loc'H, François; Mouillot, David.
The FishMed database provides traits, phylogeny, current and projected species distribution of Mediterranean fishes, and associated sea surface temperature (SST) from the regional oceanic model NEMOMED8. Data for the current geographical distributions of 635 Mediterranean fish species were compiled from a published expert knowledge atlas of fishes of the northern Atlantic and the Mediterranean (FNAM) edited between 1984 and 1986 and from an updated exotic fish species list. Two future sets of projected species distributions were obtained for the middle and end of the 21st century by using an ensemble forecasting approach for 288 coastal Mediterranean fish species based on SST according to the IPPC/SRES A2 scenario implemented with the Mediterranean...
Tipo: Text
Palavras-chave: Climate change; Coastal fishes; Functional diversity; Mediterranean fish species; Mediterranean Sea; NEMOMED8; Phylogenetic diversity; Species distribution models; Taxonomic diversity.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00371/48216/48341.pdf

An End-to-End Model Reveals Losers and Winners in a Warming Mediterranean Sea
Provedor de dados: 5
Autores: Moullec, Fabien; Barrier, Nicolas; Drira, Sabrine; Guilhaumon, François; Marsaleix, Patrick; Somot, Samuel; Ulses, Caroline; Velez, Laure; Shin, Yunne-jai.
The Mediterranean Sea is now recognized as a hotspot of global change, ranking among the fastest warming ocean regions. In order to project future plausible scenarios of marine biodiversity at the scale of the whole Mediterranean basin, the current challenge is to develop an explicit representation of the multispecies spatial dynamics under the combined influence of fishing pressure and climate change. Notwithstanding the advanced state-of-the-art modeling of food webs in the region, no previous studies have projected the consequences of climate change on marine ecosystems in an integrated way, considering changes in ocean dynamics, in phyto- and zoo-plankton productions, shifts in Mediterranean species distributions and their trophic interactions at the...
Tipo: Text
Palavras-chave: Biodiversity scenario; Climate change; Ecosystem model; End-to-end model; OSMOSE; Fishing; Mediterranean Sea.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00504/61557/65469.pdf

Global determinants of freshwater and marine fish genetic diversity
Provedor de dados: 5
Autores: Manel, Stéphanie; Guerin, Pierre-edouard; Mouillot, David; Blanchet, Simon; Velez, Laure; Albouy, Camille; Pellissier, Loïc.
Genetic diversity is estimated to be declining faster than species diversity under escalating threats, but its spatial distribution remains poorly documented at the global scale. Theory predicts that similar processes should foster congruent spatial patterns of genetic and species diversity, but empirical studies are scarce. Using a mined database of 50,588 georeferenced mitochondrial DNA barcode sequences (COI) for 3,815 marine and 1,611 freshwater fish species respectively, we examined the correlation between genetic diversity and species diversity and their global distributions in relation to climate and geography. Genetic diversity showed a clear spatial organisation, but a weak association with species diversity for both marine and freshwater species....
Tipo: Text
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00609/72076/70788.pdf

Making ecological indicators management ready: Assessing the specificity, sensitivity, and threshold response of ecological indicators
Provedor de dados: 5
Autores: Fu, Caihong; Xu, Yi; Bundy, Alida; Grüss, Arnaud; Coll, Marta; Heymans, Johanna J.; Fulton, Elizabeth A.; Shannon, Lynne; Halouani, Ghassen; Velez, Laure; Akoğlu, Ekin; Lynam, Christopher P.; Shin, Yunne-jai.
Moving toward ecosystem-based fisheries management (EBFM) necessitates a suite of ecological indicators that are responsive to fishing pressure, capable of tracking changes in the state of marine ecosystems, and related to management objectives. In this study, we employed the gradient forest method to assess the performance of 14 key ecological indicators in terms of specificity, sensitivity and the detection of thresholds for EBFM across ten marine ecosystems using four modelling frameworks (Ecopath with Ecosim, OSMOSE, Atlantis, and a multi-species size-spectrum model). Across seven of the ten ecosystems, high specificity to fishing pressure was found for most of the 14 indicators. The indicators biomass to fisheries catch ratio (B/C), mean lifespan and...
Tipo: Text
Palavras-chave: Ecological modelling; Fishing pressure; Gradient forest method; Indictor performance; Marine ecosystem; Primary productivity.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00500/61148/64576.pdf

Let more big fish sink: Fisheries prevent blue carbon sequestration—half in unprofitable areas
Provedor de dados: 5
Autores: Mariani, Gaël; Cheung, William W. L.; Lyet, Arnaud; Sala, Enric; Mayorga, Juan; Velez, Laure; Gaines, Steven D.; Dejean, Tony; Troussellier, Marc; Mouillot, David.
Contrary to most terrestrial organisms, which release their carbon into the atmosphere after death, carcasses of large marine fish sink and sequester carbon in the deep ocean. Yet, fisheries have extracted a massive amount of this “blue carbon,” contributing to additional atmospheric CO2 emissions. Here, we used historical catches and fuel consumption to show that ocean fisheries have released a minimum of 0.73 billion metric tons of CO2 (GtCO2) in the atmosphere since 1950. Globally, 43.5% of the blue carbon extracted by fisheries in the high seas comes from areas that would be economically unprofitable without subsidies. Limiting blue carbon extraction by fisheries, particularly on unprofitable areas, would reduce CO2 emissions by burning less fuel and...
Tipo: Text
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00658/77008/78264.pdf

Protected and Threatened Components of Fish Biodiversity in the Mediterranean Sea
Provedor de dados: 5
Autores: Mouillot, David; Albouy, Camille; Guilhaumon, Francois; Lasram, Frida Ben Rais; Coll, Marta; Devictor, Vincent; Meynard, Christine N.; Pauly, Daniel; Tomasini, Jean-antoine; Troussellier, Marc; Velez, Laure; Watson, Reg; Douzery, Emmanuel J. P.; Mouquet, Nicolas.
The Mediterranean Sea (0.82% of the global oceanic surface) holds 4%-18% of all known marine species (similar to 17,000), with a high proportion of endemism [1, 2]. This exceptional biodiversity is under severe threats [1] but benefits from a system of 100 marine protected areas (MPAs). Surprisingly, the spatial congruence of fish biodiversity hot spots with this MPA system and the areas of high fishing pressure has not been assessed. Moreover, evolutionary and functional breadth of species assemblages [3] has been largely overlooked in marine systems. Here we adopted a multifaceted approach to biodiversity by considering the species richness of total, endemic, and threatened coastal fish assemblages as well as their functional and phylogenetic diversity....
Tipo: Text
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00040/15109/12606.pdf

Risky business: The combined effects of fishing and changes in primary productivity on fish communities
Provedor de dados: 5
Autores: Fu, Caihong; Travers-trolet, Morgane; Velez, Laure; Gruss, Arnaud; Bundy, Alida; Shannon, Lynne J.; Fulton, Elizabeth A.; Akoglu, Ekin; Houle, Jennifer E.; Coll, Marta; Verley, Philippe; Heymans, Johanna J.; John, Emma; Shin, Yunne-jai.
There is an increasing need to understand community-level or whole-ecosystem responses to multiple stressors since the impacts of multiple stressors on marine systems depend not only on species- level responses, but also on species interactions and ecosystem structure. In this study, we used a multi-model ecosystem simulation approach to explore the combined effects of fishing and primary productivity on different components of the food-web across a suite of ecosystems and a range of model types. Simulations were carried out under different levels of primary productivity and various fishing scenarios (targeting different trophic levels). Previous work exploring the effects of multiple stressors often assumed that the combined effects of stressors are...
Tipo: Text
Palavras-chave: Marine ecosystem; Fishing; Combined effect; Meta-analysis; Synergism; Multiple drivers.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00414/52542/53368.pdf

Global distribution and conservation status of ecologically rare mammal and bird species
Provedor de dados: 5
Autores: Loiseau, Nicolas; Mouquet, Nicolas; Casajus, Nicolas; Grenie, Matthias; Gueguen, Maya; Maitner, Brian; Mouillot, David; Ostling, Annette; Renaud, Julien; Tucker, Caroline; Velez, Laure; Thuiller, Wilfried; Violle, Cyrille.
Identifying species that are both geographically restricted and functionally distinct, i.e. supporting rare traits and functions, is of prime importance given their risk of extinction and their potential contribution to ecosystem functioning. We use global species distributions and functional traits for birds and mammals to identify the ecologically rare species, understand their characteristics, and identify hotspots. We find that ecologically rare species are disproportionately represented in IUCN threatened categories, insufficiently covered by protected areas, and for some of them sensitive to current and future threats. While they are more abundant overall in countries with a low human development index, some countries with high human development...
Tipo: Text
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00657/76892/78052.pdf

Global correlates of terrestrial and marine coverage by protected areas on islands
Provedor de dados: 5
Autores: Mouillot, David; Velez, Laure; Maire, Eva; Masson, Alizée; Hicks, Christina C.; Moloney, James; Troussellier, Marc.
Many islands are biodiversity hotspots but also extinction epicenters. In addition to strong cultural connections to nature, islanders derive a significant part of their economy and broader wellbeing from this biodiversity. Islands are thus considered as the socio-ecosystems most vulnerable to species and habitat loss. Yet, the extent and key correlates of protected area coverage on islands is still unknown. Here we assess the relative influence of climate, geography, habitat diversity, culture, resource capacity, and human footprint on terrestrial and marine protected area coverage across 2323 inhabited islands globally. We show that, on average, 22% of terrestrial and 13% of marine island areas are under protection status, but that half of all islands...
Tipo: Text
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00648/76034/76949.pdf

Capturing the big picture of Mediterranean marine biodiversity with an end-to-end model of climate and fishing impacts
Provedor de dados: 5
Autores: Moullec, Fabien; Velez, Laure; Verley, Philippe; Barrier, Nicolas; Ulses, Caroline; Carbonara, Pierluigi; Esteban, Antonio; Follesa, Cristina; Gristina, Michele; Jadaud, Angelique; Ligas, Alessandro; Díaz, Eduardo López; Maiorano, Porzia; Peristeraki, Panagiota; Spedicato, Maria Teresa; Thasitis, Ioannis; Valls, Maria; Guilhaumon, François; Shin, Yunne-jai.
The Mediterranean Sea is one of the main hotspots of marine biodiversity in the world. The combined pressures of fishing activity and climate change have also made it a hotspot of global change amidst increasing concern about the worsening status of exploited marine species. To anticipate the impacts of global changes in the Mediterranean Sea, more integrated modelling approaches are needed, which can then help policymakers prioritize management actions and formulate strategies to mitigate impacts and adapt to changes. The aim of this study was to develop a holistic model of marine biodiversity in the Mediterranean Sea with an explicit representation of the spatial, multispecies dynamics of exploited resources subject to the combined influence of climate...
Tipo: Text
Palavras-chave: Ecosystem model; Ecosystem Approach to Fisheries Management; OSMOSE model; NEMOMED model; Eco3M-S model; Global change.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00512/62408/66668.pdf

The Risky Decrease of Fishing Reference Points Under Climate Change
Provedor de dados: 5
Autores: Travers-trolet, Morgane; Bourdaud, Pierre; Genu, Mathieu; Velez, Laure; Vermard, Youen.
In Europe, implementation of sustainable fisheries management has been reinforced in the latest common fisheries policy, and presently marine fish stocks are mostly managed through assessment of their exploitation and ecological status compared to reference points such as Maximum Sustainable Yield (MSY). However, MSY and its associated fishing mortality rate FMSY are sensitive to both stock characteristics and environment conditions. In parallel, climate change impacts are increasingly affecting fish stocks directly and indirectly but might also change the exploitation reference points and the associated level of catch. Here we explored the variability of MSY reference points under climate change by using a multi-species model applied to the Eastern...
Tipo: Text
Palavras-chave: Maximum sustainable yield; Climate change; Biological reference points; Ecosystem model; Fishery management.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00657/76939/78140.pdf

An end-to-end model to evaluate the sensitivity of ecosystem indicators to track fishing impacts
Provedor de dados: 5
Autores: Halouani, Ghassen; Le Loc'H, François; Shin, Yunne-jai; Velez, Laure; Hattab, Tarek; Romdhane, Mohamed Salah; Ben Rais Lasram, Frida.
In order to assist fisheries managers, ecological indicators are needed to evaluate the effects of fishing activities on marine ecosystems and to improve communication of these effects in both public and scientific contexts. Finding appropriate indicators is challenging given the complexity of marine food webs as well as the ecosystem response to fishing pressure. In this study, an end-to-end model developed in the Gulf of Gabes ecosystem (Tunisia) was used to compare the performance of a set of ecosystem indicators in assessing the impact of fishing. This end-to-end model aimed to represent the ecosystem functioning by coupling two existing sub-models, the multispecies individual-based model OSMOSE, representing the dynamics of exploited species and the...
Tipo: Text
Palavras-chave: Ecological indicators; OSMOSE; Ecosystem model; End-to-end model; Marine ecosystem; Fishing impacts; Fishery; Gulf of Gabes.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00464/57604/60172.pdf

Responses of ecological indicators to fishing pressure under environmental change: exploring non-linearity and thresholds
Provedor de dados: 5
Autores: Fu, Caihong; Xu, Yi; Grüss, Arnaud; Bundy, Alida; Shannon, Lynne; Heymans, Johanna J; Halouani, Ghassen; Akoglu, Ekin; Lynam, Christopher P; Coll, Marta; Fulton, Elizabeth A; Velez, Laure; Shin, Yunne-jai.
Marine ecosystems are influenced by multiple stressors in both linear and non-linear ways. Using generalized additive models (GAMs) fitted to outputs from a multi-ecosystem, multi-model simulation experiment, we investigated 14 major ecological indicators across ten marine ecosystems about their responses to fishing pressure under: (i) three different fishing strategies (focusing on low-, high-, or all-trophic-level taxa); and (ii) four different scenarios of directional or random primary productivity change, a proxy for environmental change. From this work, we draw four major conclusions: (i) responses of indicators to fishing mortality in shapes, directions, and thresholds depend on the fishing strategies considered; (ii) most of the indicators...
Tipo: Text
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00516/62749/67138.pdf

Detection of the elusive Dwarf sperm whale (     Kogia sima     ) using environmental DNA at Malpelo island (Eastern Pacific, Colombia)
Provedor de dados: 5
Autores: Juhel, Jean‐baptiste; Marques, Virginie; Polanco Fernández, Andrea; Borrero‐pérez, Giomar H.; Mutis Martinezguerra, Maria; Valentini, Alice; Dejean, Tony; Manel, Stéphanie; Loiseau, Nicolas; Velez, Laure; Hocdé, Régis; Letessier, Tom B.; Richards, Eilísh; Hadjadj, Florine; Bessudo, Sandra; Ladino, Felipe; Albouy, Camille; Mouillot, David; Pellissier, Loïc.
Monitoring large marine mammals is challenging due to their low abundances in general, an ability to move over large distances and wide geographical range sizes. The distribution of the pygmy (Kogia breviceps) and dwarf (Kogia sima) sperm whales is informed by relatively rare sightings, which does not permit accurate estimates of their distribution ranges. Hence, their conservation status has long remained Data Deficient (DD) in the Red list of the International Union for Conservation of Nature (IUCN), which prevent appropriate conservation measures. Environmental DNA (eDNA) metabarcoding uses DNA traces left by organisms in their environments to detect the presence of targeted taxon, and is here proved to be useful to increase our knowledge on the...
Tipo: Text
Palavras-chave: EDNA; Megafauna; Mobile species; Pelagic.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00683/79484/82076.pdf