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Bolam SG, Garcia C, Eggleton J, Kenny AJ, Buhl-Mortensen L, Gonzalez-Mirelis G, van Kooten T, Dinesen G, Hansen J, Hiddink JG, Sciberras M, Smith C, Papadopoulou N, Gumus A, Van Hoey G, Eigaard OR, Bastardie F, Rijnsdorp AD. Differences in biological traits composition of benthic assemblages between unimpacted habitats. Mar Environ Res 2017; 126:1-13. [PMID: 28214628 DOI: 10.1016/j.marenvres.2017.01.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 01/06/2017] [Accepted: 01/22/2017] [Indexed: 06/06/2023]
Abstract
There is an implicit requirement under contemporary policy drivers to understand the characteristics of benthic communities under anthropogenically-unimpacted scenarios. We used a trait-based approach on a large dataset from across the European shelf to determine how functional characteristics of unimpacted benthic assemblages vary between different sedimentary habitats. Assemblages in deep, muddy environments unaffected by anthropogenic disturbance show increased proportions of downward conveyors and surface deposit-feeders, while burrowing, diffusive mixing, scavenging and predation traits assume greater numerical proportions in shallower habitats. Deep, coarser sediments are numerically more dominated by sessile, upward conveyors and suspension feeders. In contrast, unimpacted assemblages of coarse sediments in shallower regions are proportionally dominated by the diffusive mixers, burrowers, scavengers and predators. Finally, assemblages of gravelly sediments exhibit a relatively greater numerical dominance of non-bioturbators and asexual reproducers. These findings may be used to form the basis of ranking habitats along a functional sensitivity gradient.
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Affiliation(s)
- S G Bolam
- The Centre for the Environment, Fisheries and Aquaculture Science (Cefas), Lowestoft, NR33 0HT, UK.
| | - C Garcia
- The Centre for the Environment, Fisheries and Aquaculture Science (Cefas), Lowestoft, NR33 0HT, UK
| | - J Eggleton
- The Centre for the Environment, Fisheries and Aquaculture Science (Cefas), Lowestoft, NR33 0HT, UK
| | - A J Kenny
- The Centre for the Environment, Fisheries and Aquaculture Science (Cefas), Lowestoft, NR33 0HT, UK
| | | | | | - T van Kooten
- Institute for Marine Resources and Ecosystem Studies (IMARES), P.O. Box 68, 1970 AB IJmuiden, The Netherlands
| | - G Dinesen
- National Institute for Aquatic Resources, Technical University of Denmark, Charlottenlund Castle, Charlottenlund 2920, Denmark
| | - J Hansen
- National Institute for Aquatic Resources, Technical University of Denmark, Charlottenlund Castle, Charlottenlund 2920, Denmark
| | - J G Hiddink
- School of Ocean Sciences, Bangor University, Menai Bridge, Anglesey, LL59 5AB, UK
| | - M Sciberras
- School of Ocean Sciences, Bangor University, Menai Bridge, Anglesey, LL59 5AB, UK
| | - C Smith
- Hellenic Centre for Marine Research, Attiki Greece (HCMR), Greece
| | - N Papadopoulou
- Hellenic Centre for Marine Research, Attiki Greece (HCMR), Greece
| | - A Gumus
- Ondokuz Mayis University, Samsun, Turkey
| | - G Van Hoey
- Institute of Agricultural and Fisheries Research (ILVO), Ankerstraat 1, 8400 Oostende, Belgium
| | - O R Eigaard
- National Institute for Aquatic Resources, Technical University of Denmark, Charlottenlund Castle, Charlottenlund 2920, Denmark
| | - F Bastardie
- National Institute for Aquatic Resources, Technical University of Denmark, Charlottenlund Castle, Charlottenlund 2920, Denmark
| | - A D Rijnsdorp
- Institute for Marine Resources and Ecosystem Studies (IMARES), P.O. Box 68, 1970 AB IJmuiden, The Netherlands
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Stelzenmüller V, Diekmann R, Bastardie F, Schulze T, Berkenhagen J, Kloppmann M, Krause G, Pogoda B, Buck BH, Kraus G. Co-location of passive gear fisheries in offshore wind farms in the German EEZ of the North Sea: A first socio-economic scoping. J Environ Manage 2016; 183:794-805. [PMID: 27658655 DOI: 10.1016/j.jenvman.2016.08.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 08/10/2016] [Indexed: 06/06/2023]
Abstract
Worldwide the renewable energy sector is expanding at sea to address increasing demands. Recently the race for space in heavily used areas such as the North Sea triggered the proposal of co-locating other activities such as aquaculture or fisheries with passive gears in offshore wind farms (OWFs). Our interdisciplinary approach combined a quantification of spatial overlap of activities by using Vessel Monitoring System and logbook data with a stakeholder consultation to conclude and verify on the actual feasibility of co-location. In the German Exclusive Economic Zone (EEZ) of the North Sea up to 90% of Danish and 40% of German annual gillnet fleet landings of plaice overlapped with areas where OWFs are developed. Our results indicated further that the international gillnet fishery could lose up to 50% in landings within the North Sea German EEZ when OWF areas are closed entirely for fisheries. No spatial overlap was found for UK potters targeting brown crab in the German EEZ. We further identified a number of key issues and obstacles that to date hinder an actual implementation of co-location as a measure in the marine spatial planning process: defining the legal base; implementation of safety regulations; delineation of minimum requirements for fishing vessels such as capacities, quotas, technical equipment; implementation of a licensing process; and scoping for financial subsidies to set up business. The stakeholder consultation verified the scientific findings and highlighted that all those points need to be addressed in a planning process. In the German EEZ we have shown that the socio-economic importance of spatial overlap varies within planning boundaries. Therefore we recommend an interdisciplinary bottom-up approach when scoping for suitable areas of co-location. Hence, an informed marine spatial planning process requires comprehensive and spatial explicit socio-economic viability studies factoring in also ecological effects of OWFs on target species.
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Affiliation(s)
| | - R Diekmann
- Thünen-Institute of Fisheries Ecology, Hamburg, Germany
| | - F Bastardie
- Technical University of Denmark, Institute for Aquatic Resources, Section for Ecosystem based Marine Management, Charlottenlund, Denmark
| | - T Schulze
- Thünen-Institute of Sea Fisheries, Hamburg, Germany
| | | | - M Kloppmann
- Thünen-Institute of Sea Fisheries, Hamburg, Germany
| | - G Krause
- Alfred Wegener Institute Helmholtz Center for Polar and Marine Research (AWI), Bremerhaven, Germany; SeaKult - Sustainable Futures in the Marine Realm, Bremerhaven, Germany
| | - B Pogoda
- Alfred Wegener Institute Helmholtz Center for Polar and Marine Research (AWI), Bremerhaven, Germany; University of Applied Sciences Bremerhaven, Bremerhaven, Germany
| | - B H Buck
- Alfred Wegener Institute Helmholtz Center for Polar and Marine Research (AWI), Bremerhaven, Germany; University of Applied Sciences Bremerhaven, Bremerhaven, Germany
| | - G Kraus
- Thünen-Institute of Sea Fisheries, Hamburg, Germany
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Martin M, Bastardie F, Richard D, Burel F. Studying boundary effects on animal movement in heterogeneous landscapes: the case of Abax ater (Coleoptera: Carabidae) in hedgerow network landscapes. C R Acad Sci III 2001; 324:1029-35. [PMID: 11725701 DOI: 10.1016/s0764-4469(01)01379-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Changes in movement possibilities of insect species can be a response to increasing heterogeneity in man made landscapes. We studied the movement of Abax ater (Coleoptera, Carabidae) between woody and cultivated areas in Brittany. Two woody habitats (woods and hedgerows) and two cultivated areas (cornfields and meadows) were considered. Quantifying the movement of the carabid beetle between woody and cultivated areas was done using Mark-Release-Recapture techniques. Marked individuals were released at the centre of circular enclosures (3 m in diameter), encompassing two adjacent habitats, one being wooded, the other cultivated. Individuals were recaptured at the edge of enclosures. Analysis of recaptures showed that flows of individuals from a given habitat to another were constant during the experiment. Flows can be summed up by a probability of move, which depends on the two adjacent habitats surrounding ecotone. When released in cultivated habitats, forest carabid beetles preferentially moved toward woody habitat, but in some enclosures the forest carabid beetles did not exhibited any preference between cultivated areas and woods. In these cases ecotones may include both woody and cultivated areas, and their functional width should be reconsidered. These conclusions were globally in agreement with knowledge about ecology of Abax ater, but ask for confirmation through replicates on different sites. Nevertheless, these results demonstrated the usefulness of the method and give new guidelines for the study of flows of carabid beetles through ecotones.
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Affiliation(s)
- M Martin
- CNRS 6553, Ecobio, campus de Beaulieu, 35042 Rennes, France
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