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  • 1. Carlén, Ida
    et al.
    Thomas, Len
    Carlström, Julia
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Amundin, Mats
    Teilmann, Jonas
    Tregenza, Nick
    Tougaard, Jakob
    Koblitz, Jens C
    Sveegaard, Signe
    Wennerberg, Daniel
    Loisa, Olli
    Dähne, Michael
    Brundiers, Katharina
    Kosecka, Monika
    Kyhn, Line A
    Tiberi Ljungqvist, Cinthia
    Pawliczka, Iwona
    Koza, Radomil
    Arciszewski, Bartlomiej
    Galatius, Anders
    Jabbusch, Martin
    Laaksonlaita, Jussi
    Niemi, Jussi
    Lyytinen, Sami
    Gallus, Anja
    Benke, Harald
    Blankett, Penina
    Skóra, Krzysztof E
    Acevedo-Gutiérrez, Alejandro
    Basin-scale distribution of harbour porpoises in the Baltic Sea provides basisfor effective conservation actions2018Ingår i: Biological Conservation, ISSN 0006-3207, E-ISSN 1873-2917, Vol. 226, s. 42-53Artikel i tidskrift (Refereegranskat)
  • 2. Christensen-Dalsgaard, Signe
    et al.
    Anker-Nilssen, Tycho
    Crawford, Rory
    Bond, Alexander
    Már Sigurðsson, Guðjón
    Glemarec, Gildas
    Snær Hansen, Erpur
    Kadin, Martina
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Kindt-Larsen, Lotte
    Mallory, Mark
    Ravn Merkel, Flemming
    Petersen, Aevar
    Provencher, Jennifer
    Bærum, Kim Magnus
    What’s the catch with lumpsuckers? A North Atlantic study of seabird bycatch in lumpsucker gillnet fisheries2019Ingår i: Biological Conservation, ISSN 0006-3207, E-ISSN 1873-2917, Vol. 240, artikel-id 108278Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Worldwide, incidental bycatch in fisheries is a conservation threat to many seabird species. Although knowledge on bycatch of seabirds has increased in the last decade, most stems from longline fisheries and the impacts of coastal gillnet fisheries are poorly understood. Gillnet fishing for North Atlantic lumpsucker (Cyclopterus lumpus) is one such fishery. We collated and synthesized the available information on seabird bycatch in lumpsucker gillnet fisheries across the entire geographical range to estimate and infer the magnitude of their impact on the affected seabird populations. Most birds killed were diving ducks, cormorants and auks, and each year locally high numbers of seabirds were taken as bycatch. We found large differences in bycatch rates among countries. The estimated mean bycatch in Iceland was 2.43 birds/trip, while the estimates in Norway was 0.44 and 0.39 birds/trip, respectively. The large disparities between estimates might reflect large spatial differences in bycatch rates, but could partly also arise due to distinctions in data recorded by onboard inspectors (Iceland), self-administered registration (Norway) and direct observations by cameras (Denmark). We show that lumpsucker gillnet fisheries might pose a significant risk to some populations of diving seabirds. However, a distinct data deficiency on seabird bycatch in terms of spatio-temporal coverage and the age and origins of the birds killed, limited our abilities to fully assess the extent and population consequences of the bycatch. Our results highlight the need for a joint effort among countries to standardize monitoring methods to better document the impact of these fisheries on seabirds.

    Ladda ner fulltext (pdf)
    Christensen-Dalsgaard-et-al_BycatchLumpsuckerFishery_2019
  • 3.
    Dalen, L
    et al.
    Naturhistoriska riksmuseet, Enheten för bioinformatik och genetik.
    Gotherstrom, A
    Tannerfeldt, M
    Angerbjorn, A
    Is the endangered Fennoscandian arctic fox (Alopex lagopus) population genetically isolated?2002Ingår i: Biological Conservation, ISSN 0006-3207, E-ISSN 1873-2917, Vol. 105, nr 2, s. 171-178, artikel-id PII S0006-3207(01)00180-XArtikel i tidskrift (Refereegranskat)
  • 4.
    Hemphill, Elisa June Keeling
    et al.
    Norwegian Institute for Nature Research.
    Flagstad, Øystein
    Norwegian Institute for Nature Research.
    Jensen, Henrik
    Centre for Biodiversity Dynamics (CBD), Dept of Biology, Norwegian University of Science and Technology (NTNU).
    Norén, Karin
    Department of Zoology, Stockholm University.
    Wallén, Johan Fredrik
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning. Department of Zoology, Stockholm University.
    Landa, Arild
    Norwegian Institute for Nature Research.
    Angerbjörn, Anders
    Department of Zoology, Stockholm University.
    Eide, Nina E.
    Norwegian Institute for Nature Research.
    Genetic consequences of conservation action: Restoring the arctic fox (Vulpes lagopus) population in Scandinavia2020Ingår i: Biological Conservation, ISSN 0006-3207, E-ISSN 1873-2917, Vol. 248, artikel-id 108534Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The Arctic fox (Vulpes lagopus) population in Fennoscandia experienced a drastic bottleneck in the late 19th century as a result of high hunting pressure. In the 1990s, despite nearly 70 years of protection, the population showed no signs of recovery. In order to mitigate the population decline and facilitate re-establishment, conservation actions including supplementary feeding and red fox culling were implemented in 1998, followed by the reintroduction of foxes from a captive breeding programme, starting in 2006. A positive demographic impact of these actions is evident from a doubling of the population size over the past decade. We used genetic data collected in eight subpopulations between 2008 and 2015 to address whether the recent demographic recovery has been complemented by changes in genetic variation and connectivity between subpopulations. Our results show that genetic variation within subpopulations has increased considerably during the last decade, while genetic differentiation among subpopulations has decreased. A marked shift in metapopulation dynamics is evident during the study period, suggesting substantially increased migration across the metapopulation. This shift followed the recolonization of an extinct subpopulation through the release of foxes from the captive breeding programme and was synchronized in time with the implementation of supplementary feeding and red fox culling in stepping stone patches between core subpopulations in mid-Scandinavia. Indeed, the increase in genetic variation and connectivity in the Scandinavian arctic fox population suggests that metapopulation dynamics have been restored, which may indicate an increase in the long-term viability of the population.

    Ladda ner fulltext (pdf)
    fulltext
  • 5. Kopatz, A
    et al.
    Kleven, O
    Kojola, I
    Aspi, J
    Norman, A J
    Spong, G
    Gyllenstrand, N
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Dalen, L
    Naturhistoriska riksmuseet, Enheten för bioinformatik och genetik.
    Floystad, I
    Hagen, S B
    Kindberg, J
    Flagstad, O
    Restoration of transborder connectivity for Fennoscandian brown bears (Ursus arctos)2021Ingår i: Biological Conservation, ISSN 0006-3207, E-ISSN 1873-2917, Vol. 253Artikel i tidskrift (Refereegranskat)
  • 6.
    Räikkönen, Jannikke
    et al.
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning. Swedish Museum of Natural History, Department of Contaminant Research, Stockholm, Sweden.
    Vucetich, John A.
    School of Forest Resources and Environmental Science, Michigan Technological University, Houghton, Michigan, USA.
    Peterson, Rolf O.
    School of Forest Resources and Environmental Science, Michigan Technological University, Houghton, Michigan, USA.
    Nelson, Michael P.
    Department of Forest Ecosystems and Society, Oregon State University, Corvallis, Oregon, USA.
    Congenital bone deformities and the inbred wolves (Canis lupus) of Isle Royale2009Ingår i: Biological Conservation, ISSN 0006-3207, E-ISSN 1873-2917, Vol. 142, nr 5, s. 1027-1033Artikel i tidskrift (Refereegranskat)
  • 7.
    Santos, Karin
    Naturhistoriska riksmuseet, Enheten för botanik.
    Santos, Flavio A. M. dos (Medarbetare/bidragsgivare)
    Universidade Estadual de Campinas - Unicamp.
    Tree species composition and similarity in semideciduous forest fragments of southeastern Brazil2007Ingår i: Biological Conservation, ISSN 0006-3207, E-ISSN 1873-2917, Vol. 135, nr 02, s. 268-277Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This study investigates the influence of fragment size on tree species composition, speciesrichness and on individual groups of species within 11 semideciduous forest fragments insoutheastern Brazil. We compared same-sized samples of 500 trees from 10 fragments<100 ha, allocated to three size categories, with three 500-tree samples collected in differentareas within a large forest, used as a reference forest. The variation in species richness,in the proportion of species/individuals in dispersal modes, and in the proportion of rarespecies was not related to fragment size. Nonetheless, comparisons between the mean valuesof these variables of each fragment size categories, using 95% confidence intervals,showed a wider range of variation within the category of small-sized fragments than inthe other size categories. NMS ordination plot also suggested the absence of a relationshipbetween fragment area and tree species composition. However, multiple regressions usingthe scores from the NMS ordination as response variables, and area and disturbance intensitiesas predictor variables, suggested that the interaction of area and disturbance mightbe a good predictor of species composition. Pre-existing environmental heterogeneityand geographical proximity also appeared to play a role in the variations of forest compositionamong the fragments studied. Our results demonstrated the high conservation value of small forest fragments.

    Ladda ner fulltext (pdf)
    fulltext
  • 8.
    van Zuijlen, Kristel
    et al.
    Naturhistoriska riksmuseet, Enheten för paleobiologi. Swiss Federal Research Institute WSL.
    Bisang, Irene
    Naturhistoriska riksmuseet, Enheten för botanik.
    Nobis, Michael P
    Swiss Federal Research Institute WSL.
    Bergamini, Ariel
    Swiss Federal Research Institute WSL.
    Extinction risk of European bryophytes predicted by bioclimate and traits2024Ingår i: Biological Conservation, ISSN 0006-3207, E-ISSN 1873-2917, Vol. 293Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Extinction risk is not randomly distributed among species but depends on species traits, their relationship to climate and land use, and corresponding threats by global change. While knowledge of which factors influence extinction risk is increasingly available for some taxonomic groups, this is still largely lacking for bryophytes. Here, we used random forest models to study which biological and ecological traits and bioclimatic variables are important predictors for extinction risk in European bryophytes. We hypothesized that species with a high extinction risk have a short life span, low dispersal capacities, and are more likely specialists than generalists in terms of ecological traits and bioclimate. Overall, we found bioclimatic variables to be the most important predictors for extinction risk, most notably precipitation seasonality, and related ecological traits such as continentality and elevational range. Important biological traits were plant size, life strategy and sporophyte production. In general, species living at climatic extremes and/or those with a narrow environmental range are more likely to be threatened. In addition, small-sized species and/or species with low reproductive effort and/or larger spore size are more likely to be threatened. Our findings imply that climate change may become an important driver of bryophytes extinction risk and that biological and ecological traits will be most relevant for species in coping with future threats.

    Ladda ner fulltext (pdf)
    fulltext
  • 9. van Zuijlen, Kristel
    et al.
    Bisang, Irene
    Nobis, Michael P.
    Bergamini, Ariel
    Extinction risk of European bryophytes predicted by bioclimate and traits2024Ingår i: Biological Conservation, ISSN 0006-3207, E-ISSN 1873-2917, Vol. 293, s. 110584-110584, artikel-id 110584Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Extinction risk is not randomly distributed among species but depends on species traits, their relationship to climate and land use, and corresponding threats by global change. While knowledge of which factors influence extinction risk is increasingly available for some taxonomic groups, this is still largely lacking for bryophytes. Here, we used random forest models to study which biological and ecological traits and bioclimatic variables are important predictors for extinction risk in European bryophytes. We hypothesized that species with a high extinction risk have a short life span, low dispersal capacities, and are more likely specialists than generalists in terms of ecological traits and bioclimate. Overall, we found bioclimatic variables to be the most important predictors for extinction risk, most notably precipitation seasonality, and related ecological traits such as continentality and elevational range. Important biological traits were plant size, life strategy and sporophyte production. In general, species living at climatic extremes and/or those with a narrow environmental range are more likely to be threatened. In addition, small-sized species and/or species with low reproductive effort and/or larger spore size are more likely to be threatened. Our findings imply that climate change may become an important driver of bryophytes extinction risk and that biological and ecological traits will be most relevant for species in coping with future threats.

  • 10.
    Vucetich, John A.
    et al.
    School of Forest Resources and Environmental Science, Michigan Technological University, Houghton, Michigan, USA.
    Peterson, Rolf O.
    School of Forest Resources and Environmental Science, Michigan Technological University, Houghton, Michigan, USA.
    Nelson, Michael P.
    Department of Forest Ecosystems and Society, Oregon State University, Corvallis, Oregon, USA.
    Räikkönen, Jannikke
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning. Swedish Museum of Natural History, Department of Contaminant Research, Stockholm, Sweden.
    The logic of persistence2010Ingår i: Biological Conservation, ISSN 0006-3207, E-ISSN 1873-2917, Vol. 143, nr 3, s. 533-534Artikel i tidskrift (Övrigt vetenskapligt)
1 - 10 av 10
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