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| Registros recuperados: 21 | |
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| Taormina, Bastien; Bald, Juan; Want, Andrew; Thouzeau, Gerard; Lejart, Morgane; Desroy, Nicolas; Carlier, Antoine. |
| Submarine power cables (SPC) have been in use since the mid-19th century, but environmental concerns about them are much more recent. With the development of marine renewable energy technologies, it is vital to understand their potential impacts. The commissioning of SPC may temporarily or permanently impact the marine environment through habitat damage or loss, noise, chemical pollution, heat and electromagnetic field emissions, risk of entanglement, introduction of artificial substrates, and the creation of reserve effects. While growing numbers of scientific publications focus on impacts of the marine energy harnessing devices, data on impacts of associated power connections such as SPC are scarce and knowledge gaps persist. The present study (1)... |
| Tipo: Text |
Palavras-chave: Submarine power cables; Marine renewable energy; Environmental impacts; Ecosystem functioning; Benthic habitats. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00454/56542/58330.pdf |
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| Clavier, Jacques; Chauvaud, Laurent; Amice, Erwan; Lazure, Pascal; Van Der Geest, Matthijs; Labrosse, Pierre; Diagne, Ahmed; Carlier, Antoine; Chauvaud, Sylvain. |
| Benthic primary production and respiration were investigated at 4 sites representative of the major coastal communities bordering the Sahara Desert in the Banc d'Arguin, Mauritania, Western Africa. These sites correspond to intertidal Zostera noltii beds (270 km(2)), intertidal bare sediments (88 km(2)), subtidal Cymodocea nodosa beds (374 km(2)), and subtidal bare sediments (311 km(2)). At each site, production-irradiance relationships were established in situ in November 2008 and January 2010, and used to calculate daily carbon fluxes for these communities. In intertidal areas, compared to emersion, the gross maximal photosynthetic rates for Z. noltii bed and bare sediment communities were on average 8-and 7-fold higher during immersion, respectively;... |
| Tipo: Text |
Palavras-chave: Seagrass; Carbon metabolism; Intertidal; Subtidal; Respiration; Primary; Production; Western Africa. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00189/29987/28460.pdf |
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| Vaissiere, Anne-charlotte; Levrel, Harold; Pioch, Sylvain; Carlier, Antoine. |
| The European Union׳s energy policy aims to increase the proportion of energy derived from renewable sources in Europe. Marine renewable energy, offshore wind energy especially, contributes to the renewable energy mix. Offshore wind farms appear to be clean, and are supported by governments and NGOs as a way to reduce the use of conventional energy resources and thus decrease greenhouse gas emissions. However, developing infrastructure in marine areas can impact marine ecosystems. European directives ask offshore wind farm developers to carry out an Environmental Impact Assessment (EIA) including a mitigation hierarchy, i.e. envisaging measures that would avoid, reduce, and if possible offset significant adverse effects on ecosystems and human activities.... |
| Tipo: Text |
Palavras-chave: Mitigation hierarchy; Offshore wind farms; EIA. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00187/29834/28312.pdf |
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| Puillat, Ingrid; Carlier, Antoine; Facq, Jean-valery; Rubio, Anna; Lazure, Pascal; Delauney, Laurent; Petihakis, George; Karlson, Bengt; Artigas, Felipe; Farcy, Patrick. |
| A key message of the JERICO-RI consortium (2014): “The complexity of the coastal ocean cannot be well understood if interconnection between physics, biogeochemistry and biology is not guaranteed. Such integration requires new technological developments allowing continuous monitoring of a larger set of parameters”. In agreement with this consideration, several new observing systems are developed, tested and deployed in the framework of the JERICO-NEXT H2020 project, amongst which a few of them will be presented as well as some preliminary results after the first deployments. Focus will be given on coastal transports and hydrology and on benthic biodiversity. In the first case, we will present a low cost 2D moored system dedicated to acquire vertical... |
| Tipo: Text |
Palavras-chave: JERICO; JERICO-NEXT; Coastal; Ocean Observing System (OOS); Harmonization. |
| Ano: 2018 |
URL: http://archimer.ifremer.fr/doc/00437/54866/56359.pdf |
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| Lejart, Morgane; Auvray, Cedric; Barillier, Agnes; Cadiou, Bernard; Carlier, Antoine; Delpech, Jean-paul; Folegot, Thomas; Giry, Cyril; Loaec, Jean-marie; Martinez, Ludivine; Prevot, Jehanne. |
| The objective of GHYDRO, a France Energies Marines project, is to draw up a methodology guide that provide stakeholders in tidal stream energy projects with decision-making help for the environmental integration of generators and tidal farms. The methodological guide currently represents a summary of the recommendations concerning the diverse physical parameters and biological compartments of the ecosystems that are potentially affected. The physical and biological compartments of the marine ecosystems have been addressed separately in the guide, in order to propose methodologies adapted to each one, in relation to the establishment of the initial state, the characterisation of the potential impacts and the environmental monitoring. To bring together the... |
| Tipo: Text |
Palavras-chave: Methodology guide; Environmental impact; Tidal stream energy. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00230/34115/32570.pdf |
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| Carlier, Antoine; Ritt, Benedicte; Rodrigues, Clara F.; Sarrazin, Jozee; Olu, Karine; Grall, Jacques; Clavier, Jacques. |
| Cold seep communities in the Mediterranean Sea have only been discovered two decades ago, and their trophic ecology has been the subject of very few studies. We investigated the benthic food web of two deep chemosynthesis-based ecosystems on the Napoli and Amsterdam mud volcanoes (MVs) in the eastern Mediterranean Sea (similar to 2,000 m depth). Seeping methane has been detected at the surface of both MVs during pioneering cruises and has been hypothesised to be assimilated by benthic fauna as observed in other oceans' margins. Given the extreme oligotrophic character of the eastern Mediterranean Sea, we a priori expected that chemosynthetic food sources, especially methane-derived carbon (MDC), played a major trophic role in these deep seep communities... |
| Tipo: Text |
Palavras-chave: Gulf of Mexico; Anaerobic methane oxidation; Stable isotope analysis; Sea hydrothermal vents; Food web structure; Kazan mud volcano; Florida escarpment; Trophic relationships; Benthic communauties; Lamellibrachia SP. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00016/12684/9633.pdf |
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| Carlier, Antoine. |
| Harvesting renewable marine energies (RME) will allow coastal regions to deploy a consequent contribution to the effort to reduce carbon emissions worldwide. However, as with any large-scale development in the marine environment, it comes with uncertainty about potential environmental and societal impacts, most of which have not been adequately evaluated yet. Across Europe, offshore wind farms have a total capacity of almost 3 gigawatts (GW), according to the European Wind Energy Association. By 2020, France plans to add up to 6 GW and on July 11th 2011, the French government opened a call for project proposals for 5 zones off the northern and western coasts. The development of less mature technologies (such as tidal turbines or wave energy converters) is... |
| Tipo: Text |
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| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00067/17802/15328.pdf |
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| Taormina, Bastien; Di Poi, Carole; Agnalt, Ann-lisbeth; Carlier, Antoine; Desroy, Nicolas; Escobar-lux, Rosa Helena; D’eu, Jean-françois; Freytet, Florian; Durif, Caroline M.f.. |
| The number of submarine power cables using either direct or alternating current is expected to increase drastically in coming decades. Data concerning the impact of magnetic fields generated by these cables on marine invertebrates are scarce. In this context, the aim of this study was to explore the potential impact of anthropogenic static and time-varying magnetic fields on the behavior of recently settled juvenile European lobsters (Homarus gammarus) using two different behavioral assays. Day-light conditions were used to stimulate the sheltering behavior and facilitate the video tracking. We showed that juvenile lobsters did not exhibit any change of behavior when submitted to an artificial magnetic field gradient (maximum intensity of 200 µT) compared... |
| Tipo: Text |
Palavras-chave: Anthropogenic impact; Behavior; Homarus gammarus; Magnetic field; Submarine power cable. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00599/71152/69473.pdf |
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| Grasso, Florent; Carlier, Antoine; Cugier, Philippe; Verney, Romaric; Marzloff, Martin. |
| In coastal environments, strong feedback can exist between benthic fauna and sediment dynamics. Benthic populations can modify sediment dynamics through biofiltration and bioturbation, while hydro- and sediment dynamics directly determine local environmental conditions for benthic organisms. However, these complex feedbacks are difficult to study in situ. Here, we carried out mesocosm experiments to characterize the effects of a benthic species (the gastropod Crepidula fornicata) on mud dynamics under hydrodynamic conditions representative of their natural habitat. Different experimental tests related to the inclusion (or not) of dead or live crepidula reveal that biofiltration can increase particle settling up to 40%. Flocculation, which is strengthened... |
| Tipo: Text |
Palavras-chave: Laboratory experiments; Coastal processes; Physical-biological interactions; Benthic engineer species; Mud settling; Flocculation; Biofiltration; Organic matter. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00662/77403/79043.pdf |
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| Sokolowski, Adam; Wolowicz, M.; Asmus, H.; Asmus, R.; Carlier, Antoine; Gasiunaite, Z.; Gremare, Antoine; Hummel, H.; Lesutiene, J.; Razinkovas, A.; Renaud, Paul; Richard, P.; Kedra, M.. |
| Numerical structure and the organisation of food webs within macrozoobenthic communities has been assessed in the European waters (Svalbard, Barents Sea, Baltic Sea, North Sea, Atlantic Ocean and the Mediterranean Sea) to address the interactions between biodiversity and ecosystem functioning. Abundance and classical species diversity indices (S, H', J) of macrofaunal communities were related to principal attributes of food webs (relative trophic level and food chain length, FCL) that were determined from carbon and nitrogen stable isotope values. Structure of marine macrobenthos varies substantially at a geographical scale; total abundance ranges from 63 ind. m(-2) to 34,517 ind. m(-2), species richness varies from 3 to 166 and the Shannon-Weaver... |
| Tipo: Text |
Palavras-chave: Macrobenthic communities; Biodiversity; Food web structure; Diversity-structure interactions; European waters. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00093/20378/18214.pdf |
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| Mongruel, Remi; Kermagoret, Charlene; Carlier, Antoine; Scemama, Pierre; Le Mao, Patrick; Levain, Alix; Balle-beganton, Johanna; Vaschalde, Diane; Bailly, Denis. |
| Si l’idée que la Nature rend à l’Homme des services indispensables est très ancienne, l’approche par les services écosystémiques a gagné une reconnaissance universelle avec la réalisation du Millenium Ecosystem Assessment au début des années 2000. Dans l’acception contemporaine de cette notion, les évaluations de services écosystémiques doivent avant tout servir à la mise en place de politiques ambitieuses en matière de protection des écosystèmes et de la biodiversité. Ainsi, les objectifs d’Aïchi pour 2020 fixés par la Convention sur la Diversité Biologique prévoient notamment que les valeurs de la biodiversité puissent être intégrées dans les processus de décision. L’Évaluation Française des Écosystèmes et des Services Écosystémiques (EFESE) est un... |
| Tipo: Text |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00600/71260/69647.pdf |
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| Taormina, Bastien; Marzloff, Martin; Desroy, Nicolas; Caisey, Xavier; Dugornay, Olivier; Metral Thiesse, Emmanuelle; Tancray, Aurelien; Carlier, Antoine. |
| Underwater imagery is increasingly used as an effective and repeatable method to monitor benthic ecosystems. Nevertheless, extracting ecologically relevant information from a large amount of raw images remains a time-consuming and somewhat laborious challenge. Thus, underwater imagery processing needs to strike a compromise between time-efficient image annotation and accuracy in quantifying benthic community composition. Designing and implementing robust image sampling and image annotation protocols are therefore critical to rationally address these trade-offs between ecological accuracy and processing time. The aim of this study was to develop and to optimize a reliable image scoring strategy based on the point count method using imagery data acquired on... |
| Tipo: Text |
Palavras-chave: Benthic monitoring; Fouling community; Sampling design; Taxonomic resolution; Underwater imagery. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00599/71160/69550.pdf |
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| Carlier, Antoine. |
| The objective of this task is to develop a new towed underwater video system (TUVS), called ‘Pagure-2’ in order to map habitats, describe biodiversity, and monitor ecological changes in coastal benthic ecosystems. For this purpose, we modified an existing TUVS (‘Pagure’) to expand the range of accessible benthic habitats, to get more stable footage on irregular rocky bottoms, and to investigate fragile ecosystems (e.g., marine protected areas) where impact has to be limited. Thus, the Pagure-2 is a more versatile tool capable of being deployed on two different configurations: a classical ‘sledge’ mode with skates, and a ‘flying’ mode that reduces contact with the sea floor. It is easily deployable on small (~25 m) coastal vessels as well as large research... |
| Tipo: Text |
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| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00630/74248/73878.pdf |
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| Androuin, Thibault; Polerecky, Lubos; Decottignies, Priscilla; Dubois, Stanislas; Dupuy, Christine; Hubas, Cedric; Jesus, Bruno; Le Gall, Erwan; Marzloff, Martin; Carlier, Antoine. |
| The slipper limpet Crepidula fornicata is an emblematic invasive species along the northeast Atlantic coast. This gregarious gastropod lives in stacks of several individuals and forms extended beds in shallow subtidal areas. The effects of this engineer species on the colonized habitat can be physical (e.g., presence of hard-shell substrates with uneven topography) or biological (e.g., nutrient enrichment by direct excretion or via biodeposition). We hypothesized that through biological activity, nutrient fluxes at the sediment-water interface are enhanced, leading to stimulated primary productivity by microphytobenthos (MPB) associated with Crepidula beds. To test this fertilization hypothesis, we conducted a 10-day mesocosm experiment using C. fornicata... |
| Tipo: Text |
Palavras-chave: Crepidula fornicata; Engineer species; Subtidal microphytobenthos; Fertilization; Hyperspectral imaging. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00472/58338/60893.pdf |
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| Androuin, Thibault; Dubois, Stanislas; Decottignies, Priscilla; Pelleter, Ewan; Carlier, Antoine. |
| Rationale Stable isotopic analysis is extensively used in trophic ecology. Inorganic carbonates, usually originating from shell fragments, are routinely removed from samples using an acid treatment because they affect δ13C values. However, acid treatment can also change δ15N values. For some taxa such as molluscs, the general assumption is that acid pre‐treatment is not necessary since their shell is easily dissected from soft tissues and represents the only source of inorganic carbonates. However, other sources of non‐dietary carbon (e.g., intracellular inorganic carbon) enriched in 13C thus get overlooked. Methods Soft tissues (foot) of the invasive gastropod Crepidula fornicata of different size classes were analysed for their δ13C and δ15N values with... |
| Tipo: Text |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00464/57602/59798.pdf |
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| Registros recuperados: 21 | |
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