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| Registros recuperados: 10 | |
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| Eigaard, Ole R.; Bastardie, Francois; Hintzen, Niels; Buhl-mortensen, Lene; Buhl-mortensen, Pål; Catarino, Rui; Dinesen, Grete E.; Fock, Heino; Geitner, Kerstin; Gerritsen, Hans; Gonzalez, Manuel M.; Jonsson, Patrik; Kavadas, Stefanos; Laffargue, Pascal; Lundy, Mathieu; Mirelis, Genoveva G.; Nielsen, Rasmus; Papadopoulou, Nadia; Posen, Paulette; Pulcinella, Jacopo; Russo, Tomasso; Sala, Antonello; Silva, Cristina; Smith, Chris; Vanelslander, Bart; Zengin, Mustafa; Rijnsdorp, Adriaan D.. |
| Mapping and monitoring of pressure from fishery on the marine benthic environment is necessary to support an ecosystem approach to fisheries management (EAFM). In many cases this need is not reflected in official fisheries statistics and logbooks, where focus typically is on catch rather than effort. Consequently, most logbook information is not well suited for quantitative estimation of seafloor impact (swept area and impact severity) of the different gears and trips. We developed a method to overcome this information deficiency of official statistics and produced European wide high-resolution fishing intensity maps (total yearly swept area within grid cells of 1*1 minutes longitude and latitude) for 2010, 2011 and 2012. The annual distribution and... |
| Tipo: Text |
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| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00310/42138/54476.pdf |
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| Bolam, Stéphane; Eggleton, Jacqueline D.; Garcia, Clement; Kenny, Andrew J.; Buhl-mortensen, Lene; Gonzalez, Genoveva; Kooten, Tobias; Dinesen, Grete E.; Hansen, Jorgen; Hiddink, Jan Geert; Sciberras, Marija; Smith, Chris; Papadopoulou, K. Nadia; Gumus, Aysun; Van Hoey, Gert; Laffargue, Pascal; Eigaard, Ole; Bastardie, Francois. |
| One of the most widespread yet manageable pressures imposed on the seabed is that resulting from disturbance of the substrate by towed demersal fishing gear (bottom fishing and dredging). Demersal fishing gears are deployed on every continental shelf in the world and, in UK waters, the footprint of fishing is estimated to account for over 99% of the known footprint of all human pressures on the seabed. It is, therefore, essential that current and future management of fishing activities are based on an improved scientific rationale in order to improve the long-term sustainability of this activity. While the impacts of demersal fishing on the biological characteristics of the seabed have been well-studied, the approaches have tended to focus on assessing... |
| Tipo: Text |
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| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00310/42140/41451.pdf |
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| Chust, Guillem; Allen, J. Icarus; Bopp, Laurent; Schrum, Corinna; Holt, Jason; Tsiaras, Kostas; Zavatarelli, Marco; Chifflet, Marina; Cannaby, Heather; Dadou, Isabelle; Daewel, Ute; Wakelin, Sarah L.; Machu, Eric; Pushpadas, Dhanya; Butenschon, Momme; Artioli, Yuri; Petihakis, Georges; Smith, Chris; Garcon, Veronique; Goubanova, Katerina; Le Vu, Briac; Fach, Bettina A.; Salihoglu, Baris; Clementi, Emanuela; Irigoien, Xabier. |
| Ocean warming can modify the ecophysiology and distribution of marine organisms, and relationships between species, with nonlinear interactions between ecosystem components potentially resulting in trophic amplification. Trophic amplification (or attenuation) describe the propagation of a hydroclimatic signal up the food web, causing magnification (or depression) of biomass values along one or more trophic pathways. We have employed 3-D coupled physical-biogeochemical models to explore ecosystem responses to climate change with a focus on trophic amplification. The response of phytoplankton and zooplankton to global climate-change projections, carried out with the IPSL Earth System Model by the end of the century, is analysed at global and regional basis,... |
| Tipo: Text |
Palavras-chave: Ecosystem model; Food web; Plankton; Primary production; Sea warming; Trophic amplification. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00188/29966/28481.pdf |
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| Rose, Kenneth A.; Allen, J. Icarus; Artioli, Yuri; Barange, Manuel; Blackford, Jerry; Carlotti, Francois; Cropp, Roger; Daewel, Ute; Edwards, Karen; Flynn, Kevin; Hill, Simeon L.; Hillerislambers, Reinier; Huse, Geir; Mackinson, Steven; Megrey, Bernard; Moll, Andreas; Rivkin, Richard; Salihoglu, Baris; Schrum, Corinna; Shannon, Lynne; Shin, Yunne-jai; Smith, S. Lan; Smith, Chris; Solidoro, Cosimo; St John, Michael; Zhou, Meng. |
| There is growing interest in models of marine ecosystems that deal with the effects of climate change through the higher trophic levels. Such end-to-end models combine physicochemical oceanographic descriptors and organisms ranging from microbes to higher-trophic-level (HTL) organisms, including humans, in a single modeling framework. The demand for such approaches arises from the need for quantitative tools for ecosystem-based management, particularly models that can deal with bottom-up and top-down controls that operate simultaneously and vary in time and space and that are capable of handling the multiple impacts expected under climate change. End-to-end models are now feasible because of improvements in the component submodels and the availability of... |
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| Ano: 2010 |
URL: https://archimer.ifremer.fr/doc/00483/59488/62350.pdf |
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| Rijnsdorp, A.d.; Bastardie, Francois; Bolam, S.g.; Buhl-mortensen, Lene; Eigaard, O.r.; Hamon, Katell G.; Hiddink, Jan Geert; Hintzen, N.t.; Ivanovic, Ana; Kenny, Andrew; Laffargue, Pascal; Nielsen, R.n.; O’neill, F.g.; Piet, G.j.; Polet, Hans; Sala, Antonello; Smith, Chris; Van Denderen, P.d.; Van Kooten, Tobias; Zengin, Mustafa. |
| A framework to assess the impact of mobile fishing gear on the seabed and benthic ecosystem is presented. The framework that can be used at regional and local scales considers the physical effects of trawl gears on the seabed, on marine taxa and the functioning of the benthic ecosystem. A reductionist approach is applied that breaks down a fishing gear in its components and distinguishes a number of biological traits that are chosen to determine the vulnerability of benthos for the impact of a gear component or to provide a proxy for their ecological role. The approach considers a wide variety of gear elements, such as otter boards, twin trawl clump and ground-rope, and, sweeps that herd the fish. The physical impact of these elements on the seabed,... |
| Tipo: Text |
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| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00425/53642/54479.pdf |
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| Rijnsdorp, A.d.; Van Kooten, T.; Van De Wolfshaar, K.; Eggleton, J.; Bolam, S.g.; Buhl-mortensen, Lene; Garcia, C.; Gonzalez, G.; Dinesen, Grete; Papadopoulou, Nadia; Smith, Chris; Gumus, A.; Bastardie, François; Eigaard, O.r.; Hiddink, Jan Geert; Sciberras, M.; Kenny, Andrew; Laffargue, Pascal; Piet, G.j.; Polet, Hans; Van Denderen, P.d.; Van Kooten, Tobias; Zengin, Mustafa. |
| An important consideration in assessing the impacts of fishing on seabed habitats is to understand the functional links (as trophic interactions) between populations of demersal fish species and potential benthic invertebrate prey (food) which live on or in the seabed. The type of sea-bed fauna has been shown to respond to both natural variation in habitat conditions and in response to different levels of fishing pressure. The extent to which different commercial fish species will depend on specific combinations of habitat type and fishing disturbance to feed will likely be species specific. It has been suggested that positive changes in growth rates of different demersal fish species are not only related to density-dependent processes, but may also be... |
| Tipo: Text |
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| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00425/53641/54478.pdf |
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| Nielsen, J. Rasmus; Bastardie, Francois; Buhl-mortensen, Lene; Eigaard, Ole; Gümüs, Aysun; Hintzen, Niels T.; Kavadas, Stefanos; Laffargue, Pascal; Mehault, Sonia; Notti, Emilio; Papadoupoulou, Nadia; Polet, Hans; Reid, David; Rijnsdorp, Adriaan D.; Rochet, Marie-joelle; Robert, Alexandre; Sala, Antonello; Smith, Chris; Virgili, Massimo; Zengin, Mustafa. |
| Baltic Sea Benthic ecosystem impacts from demersal fishery in the western Baltic is assumed to come mainly from Nephrops trawling in the central and southern Kattegat, mussel dredging in the Belt Sea, and mixed cod trawling in the western Baltic Sea.These fisheries both impact the seabed, as well as produce substantial amounts of discards. The western Baltic Sea offer a unique opportunity to analyse the benthic effects of fishingthanks to the closure of Øresund to towed gears since the 1920s, and the introduction of the Kattegat MPA in2009 (including cod closure) and the western Baltic Sea Natura-2000 areas. Furthermore an extensive benthic nationalmonitoring and data collection effort has taken place in the area over a number of years, which can be usedto... |
| Tipo: Text |
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| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00310/42142/41453.pdf |
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| Sala, Antonello; Bastardie, Francois; De Carlo, F.; Dinesen, Grete E.; Eigaard, Ole; Feekings, J.p.; Frandsen, R.f.; Jonsson, P.; Krag, L.a.; Laffargue, Pascal; Magnusson, M.; Nielsen, J. Rasmus; Notti, Emilio; Papadoupoulou, Nadia; Polet, Hans; Rijnsdorp, A. D.; Sköld, Mattias; Smith, Chris; Van Marlen, B.; Virgili, Massimo; Zengin, Mustafa. |
| Tipo: Text |
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| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00310/42144/41456.pdf |
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| Sala, Antonello; Nielsen, J. Rasmus; Rijnsdorp, Adriaan D.; Polet, Hans; Laffargue, Pascal; Smith, Chris; Zengin, Mustafa. |
| Each of the regional case studies focus on one or more fisheries that are representative of the region and comprise the full range of fishing gears that are widely used in European waters and are highly relevant in the context of mitigating their impact on benthic ecosystems. Case studies identified are the Baltic Sea (Nephrops trawl, Otter trawls for cod, Blue mussel fishery), North Sea (Beam trawl, Shrimp trawl), Western waters (Nephrops trawl, Scallop trawl, Otter trawl on biogenic habitats), Mediterranean Sea (Otter trawl), Black Sea (Rapa whelk fishery with beam trawls and commercial demersal fisheries with bottom trawls). In each of the case studies, a full analysis of a selected fishery including the assessment of the current impact on the benthic... |
| Tipo: Text |
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| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00425/53649/54487.pdf |
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| Sala, Antonello; Nielsen, Rasmus; Polet, Hans; Laffargue, Pascal; Smith, Chris; Zengin, Mustafa; Rijnsdorp, Adriaan. |
| This report provides a detailed account of the field and modelling studies carried out in the BENTHIS project in the Baltic Sea, North Sea, Western Waters, Mediterranean and Black Sea on the mitigation of bottom trawling impacts on the seafloor and benthic ecosystem. The studies were conducted in close collaboration with fishers and gear manufacterers and focused on the major bottom trawl fisheries in European waters: otter trawl fisheries for demersal fish, otter trawl fisheries for Nephrops, beam trawl fisheries for flatfish, beam trawl fisheries for brown shrimps, beam trawl fisheries for whelks, dredge fisheries for bivalves (mussel, scallops). Both technological innovations and alternative management scenarios were explored. Technological innovations... |
| Tipo: Text |
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| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00425/53635/54473.pdf |
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| Registros recuperados: 10 | |
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