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Basin-scale distribution of harbour porpoises in the Baltic Sea provides basis for effective conservation actions
AquaBiota Water Res, Sweden; Stockholm Univ, Sweden.
Univ St Andrews, Scotland.
AquaBiota Water Res, Sweden; Swedish Museum Nat Hist, Sweden.
Linköpings universitet, Institutionen för fysik, kemi och biologi, Biologi. Linköpings universitet, Tekniska fakulteten. Kolmarden Wildlife Pk, Sweden.
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2018 (Engelska)Ingår i: Biological Conservation, ISSN 0006-3207, E-ISSN 1873-2917, Vol. 226, s. 42-53Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Knowledge on spatial and seasonal distribution of species is crucial when designing protected areas and implementing management actions. The Baltic Proper harbour porpoise (Phocoena phocoena) population is critically endangered, and its distribution is virtually unknown. Here, we used passive acoustic monitoring and species distribution models to describe the spatial and seasonal distribution of harbour porpoises in the Baltic Proper. Porpoise click detectors were deployed over a systematic grid of 297 stations in eight countries from April 2011 through July 2013. Generalized additive models were used to describe the monthly probability of detecting porpoise clicks as a function of spatially-referenced covariates and time. During the reproductive season, two main areas of high probability of porpoise detection were identified. One of those areas, situated on and around the offshore banks in the Baltic Proper, is clearly separated from the known distribution range of the Belt Sea population during breeding season, suggesting this is an important breeding ground for the Baltic Proper population. We commend the designation of this area as a marine protected area and recommend Baltic Sea countries to also protect areas in the southern Baltic Sea and the Hand Bight where additional important harbour porpoise habitats were identified. Further conservation measures should be carried out based on analyses of overlap between harbour porpoise distribution and potentially harmful anthropogenic activities. Our study shows that large-scale systematic monitoring using novel techniques can give important insights on the distribution of low-density populations, and that international cooperation is pivotal when studying transnationally migratory species.

Ort, förlag, år, upplaga, sidor
ELSEVIER SCI LTD , 2018. Vol. 226, s. 42-53
Nyckelord [en]
Spatial distribution; Passive acoustic monitoring; Population structure; Harbour porpoise; Marine protected areas; Biodiversity conservation
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Ekologi
Identifikatorer
URN: urn:nbn:se:liu:diva-152067DOI: 10.1016/j.biocon.2018.06.031ISI: 000445992900006OAI: oai:DiVA.org:liu-152067DiVA, id: diva2:1259435
Anmärkning

Funding Agencies|EU LIFE + programme [LIFE08 NAT/S/000261]; Swedish Agency for Marine and Water Management; Kolmarden Wildlife Park; Finnish Ministry of Environment; WWF Finland; Tampereen Sarkanniemi Ltd.; Turku University of Applied Sciences; University of Gdansk; Chief Inspectorate of Environmental Protection, Poland; National Fund for Environmental Protection and Water, Poland; Voivodship Fund for Environment Protection and Water in Gdansk, Aarhus University; Danish Environmental Protection Agency; Federal Agency for Nature Conservation, Germany [SAMBAH II 5 Vw/52602/2011-Mar 36032/66]; European Association of Zoos and Aquaria

Tillgänglig från: 2018-10-29 Skapad: 2018-10-29 Senast uppdaterad: 2018-10-29

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Amundin, Mats
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