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A Response to Scientific and Societal Needs for Marine Biological Observations ArchiMer
Bax, Nicholas J.; Miloslavich, Patricia; Muller-karger, Frank Edgar; Allain, Valerie; Appeltans, Ward; Batten, Sonia Dawn; Benedetti-cecchi, Lisandro; Buttigieg, Pier Luigi; Chiba, Sanae; Costa, Daniel Paul; Duffy, J. Emmett; Dunn, Daniel C.; Johnson, Craig Richard; Kudela, Raphael M.; Obura, David; Rebelo, Lisa-maria; Shin, Yunne-jai; Simmons, Samantha Elisabeth; Tyack, Peter Lloyd.
Development of global ocean observing capacity for the biological EOVs is on the cusp of a step-change. Current capacity to automate data collection and processing and to integrate the resulting data streams with complementary data, openly available as FAIR data, is certain to dramatically increase the amount and quality of information and knowledge available to scientists and decision makers into the future. There is little doubt that scientists will continue to expand their understanding of what lives in the ocean, where it lives and how it is changing. However, whether this expanding information stream will inform policy and management or be incorporated into indicators for national reporting is more uncertain. Coordinated data collection including open...
Tipo: Text Palavras-chave: GOOS; Capacity development; EOV; Ocean observing; Essential ocean variable; UN Decade; Sustainable Development Goals.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00509/62023/66141.pdf
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An End-to-End Model Reveals Losers and Winners in a Warming Mediterranean Sea ArchiMer
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
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An end-to-end model to evaluate the sensitivity of ecosystem indicators to track fishing impacts ArchiMer
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
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Combined Fishing and Climate Forcing in the Southern Benguela Upwelling Ecosystem: An End-to-End Modelling Approach Reveals Dampened Effects ArchiMer
Travers-trolet, Morgane; Shin, Yunne-jai; Shannon, Lynne J.; Moloney, Coleen L.; Field, John G..
The effects of climate and fishing on marine ecosystems have usually been studied separately, but their interactions make ecosystem dynamics difficult to understand and predict. Of particular interest to management, the potential synergism or antagonism between fishing pressure and climate forcing is analysed in this paper, using an end-to-end ecosystem model of the southern Benguela ecosystem, built from coupling hydrodynamic, biogeochemical and multispecies fish models (ROMS-N2P2Z2D2-OSMOSE). Scenarios of different intensities of upwelling-favourable wind stress combined with scenarios of fishing top-predator fish were tested. Analyses of isolated drivers show that the bottom-up effect of the climate forcing propagates up the food chain whereas the...
Tipo: Text
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00186/29741/28166.pdf
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Evaluating changes in marine communities that provide ecosystem services through comparative assessments of community indicators ArchiMer
Kleisner, Kristin M.; Coll, Marta; Lynam, Christopher P.; Bundy, Alida; Shannon, Lynne; Shin, Yunne-jai; Boldt, Jennifer L.; Borges, Maria F.; Diallo, Ibrahima; Fox, Clive; Gascuel, Didier; Heymans, Johanna J.; Juan Jorda, Maria J.; Jouffre, Didier; Large, Scott I.; Marshall, Kristin N.; Ojaveer, Henn; Piroddi, Chiara; Tam, Jorge; Torres, Maria A.; Travers-trolet, Morgane; Tsagarakis, Konstantinos; Van Der Meeren, Gro I.; Zador, Stephani.
Fisheries provide critical provisioning services, especially given increasing human population. Understanding where marine communities are declining provides an indication of ecosystems of concern and highlights potential conflicts between seafood provisioning from wild fisheries and other ecosystem services. Here we use the nonparametric statistic, Kendall׳s tau, to assess trends in biomass of exploited marine species across a range of ecosystems. The proportion of ‘Non-Declining Exploited Species’ (NDES) is compared among ecosystems and to three community-level indicators that provide a gauge of the ability of a marine ecosystem to function both in provisioning and as a regulating service: survey-based mean trophic level, proportion of predatory fish,...
Tipo: Text Palavras-chave: Ecological indicator; Comparative approach; Community metric; IndiSeas; Fishing impacts.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00254/36555/35186.pdf
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Exploring the usefulness of scenario archetypes in science-policy processes: experience across IPBES assessments ArchiMer
Sitas, Nadia; Harmáčková, Zuzana V.; Anticamara, Jonathan A.; Arneth, Almut; Badola, Ruchi; Biggs, Reinette; Blanchard, Ryan; Brotons, Lluis; Cantele, Matthew; Coetzer, Kaera; Dasgupta, Rajarshi; Den Belder, Eefje; Ghosh, Sonali; Guisan, Antoine; Gundimeda, Haripriya; Hamann, Meike; Harrison, Paula A.; Hashimoto, Shizuka; Hauck, Jennifer; Klatt, Brian J.; Kok, Kasper; Krug, Rainer M.; Niamir, Aidin; O'Farrell, Patrick J.; Okayasu, Sana; Palomo, Ignacio; Pereira, Laura M.; Riordan, Philip; Santos-martín, Fernando; Selomane, Odirilwe; Shin, Yunne-jai; Valle, Mireia.
Scenario analyses have been used in multiple science-policy assessments to better understand complex plausible futures. Scenario archetype approaches are based on the fact that many future scenarios have similar underlying storylines, assumptions, and trends in drivers of change, which allows for grouping of scenarios into typologies, or archetypes, facilitating comparisons between a large range of studies. The use of scenario archetypes in environmental assessments foregrounds important policy questions and can be used to codesign interventions tackling future sustainability issues. Recently, scenario archetypes were used in four regional assessments and one ongoing global assessment within the Intergovernmental Science-Policy Platform for Biodiversity...
Tipo: Text Palavras-chave: Assessment; Biodiversity; Decision making; Ecosystem services; Futures; Nature; Regional; Scenarios.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00516/62748/67140.pdf
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Making ecological indicators management ready: Assessing the specificity, sensitivity, and threshold response of ecological indicators ArchiMer
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
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Relationships among fisheries exploitation, environmental conditions, and ecological indicators across a series of marine ecosystems ArchiMer
Fu, Caihong; Large, Scott; Knight, Ben; Richardson, Anthony J.; Bundy, Alida; Reygondeau, Gabriel; Boldt, Jennifer; Van Der Meeren, Gro I.; Torres, Maria A; Sobrino, Ignacio; Auber, Arnaud; Travers-trolet, Morgane; Piroddi, Chiara; Diallo, Ibrahima; Jouffre, Didier; Mendes, Hugo; Borges, Maria Fatima; Lynam, Christopher P.; Coll, Marta; Shannon, Lynne J.; Shin, Yunne-jai.
Understanding how external pressures impact ecosystem structure and functioning is essential for ecosystem-based approaches to fisheries management. We quantified the relative effects of fisheries exploitation and environmental conditions on ecological indicators derived from two different data sources, fisheries catch data (catch-based) and fisheries independent survey data (survey-based) for 12 marine ecosystems using a partial least squares path modeling approach (PLS-PM). We linked these ecological indicators to the total biomass of the ecosystem. Although the effects of exploitation and environmental conditions differed across the ecosystems, some general results can be drawn from the comparative approach. Interestingly, the PLS-PM analyses showed...
Tipo: Text Palavras-chave: Ecological indicators; Environmental conditions; Fisheries exploitation; Marine ecosystems; Partial least squares path modeling.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00250/36155/34710.pdf
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Responses of ecological indicators to fishing pressure under environmental change: exploring non-linearity and thresholds ArchiMer
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
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The good(ish), the bad, and the ugly: a tripartite classification of ecosystem trends ArchiMer
Bundy, Alida; Shannon, Lynne J.; Rochet, Marie-joelle; Neira, Sergio; Shin, Yunne-jai; Hill, Louize; Aydin, Kerim.
Marine ecosystems have been exploited for a long time, growing increasingly vulnerable to collapse and irreversible change. How do we know when an ecosystem may be in danger? A measure of the status of individual stocks is only a partial gauge of its status, and does not include changes at the broader ecosystem level, to non-commercial species or to its structure or functioning. Six ecosystem indicators measuring trends over time were collated for 19 ecosystems, corresponding to four ecological attributes: resource potential, ecosystem structure and functioning, conservation of functional biodiversity, and ecosystem stability and resistance to perturbations. We explored the use of a decision-tree approach, a definition of initial ecosystem state (impacted...
Tipo: Text Palavras-chave: Comparative approach; Decision tree; Ecosystem classification; Ecosystem indicator; Exploited marine ecosystems.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00002/11374/12047.pdf
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Trend analysis of indicators: a comparison of recent changes in the status of marine ecosystems around the world ArchiMer
Blanchard, Julia L.; Coll, Marta; Trenkel, Verena; Vergnon, Remi; Yemane, Dawit; Jouffre, Didier; Link, Jason S.; Shin, Yunne-jai.
Time-series of ecological and exploitation indicators collected from 19 ecosystems were analysed to investigate whether there have been temporal trends in the status of fish communities. Using linear and non-linear statistical methods, trends are reported for six indicators (mean length of fish in the community, mean lifespan, proportion of predatory fish, total biomass of surveyed species, mean trophic level of landings, and inverse fishing pressure), and the redundancy of these indicators across ecosystems is evaluated. The expected direction of change for an ecosystem that is increasingly impacted by fishing is a decline in all indicators. A mixture of negative and positive directions of change is recorded, both within and among all ecosystems...
Tipo: Text Palavras-chave: Community; Ecological indicators; Ecosystem-based fisheries management; Ecosystem effects of fishing; Natural resource management.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00002/11373/8166.pdf
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Using size-based indicators to evaluate the ecosystem effects of fishing ArchiMer
Shin, Yunne-jai; Rochet, Marie-joelle; Jennings, Simon; Field, John; Gislason, Henrik.
The usefulness and relevance of size-based indicators (SBIs) to an ecosystem approach to fisheries (EAF) are assessed through a review of empirical and modelling studies. SBIs are tabulated along with their definitions, data requirements, potential biases, availability of time-series, and expected directions of change in response to fishing pressure. They include mean length in a population, mean length in a community, mean maximum length in a community, and the slope and intercept of size spectra. Most SBIs can be derived from fairly standard survey data on length frequencies, without the need for elaborate models. Possible fishing- and environment-induced effects are analysed to distinguish between the two causes, and hypothetical cases of reference...
Tipo: Text Palavras-chave: Size spectrum; Size based indicators; Ecosystem approach to fisheries.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/publication-775.pdf
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