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The effects of red fox scent on winter activity patterns of suburban wildlife: evaluating predator-prey interactions and the importance of groundhog burrows in promoting biodiversity. Urban Ecosyst 2020. [DOI: 10.1007/s11252-020-01056-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Trouwborst A, McCormack PC, Martínez Camacho E. Domestic cats and their impacts on biodiversity: A blind spot in the application of nature conservation law. PEOPLE AND NATURE 2020. [DOI: 10.1002/pan3.10073] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Arie Trouwborst
- Tilburg Law School Tilburg University Tilburg The Netherlands
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Rexer-Huber K, Veale AJ, Catry P, Cherel Y, Dutoit L, Foster Y, McEwan JC, Parker GC, Phillips RA, Ryan PG, Stanworth AJ, van Stijn T, Thompson DR, Waters J, Robertson BC. Genomics detects population structure within and between ocean basins in a circumpolar seabird: The white-chinned petrel. Mol Ecol 2019; 28:4552-4572. [PMID: 31541577 DOI: 10.1111/mec.15248] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 08/29/2019] [Accepted: 09/09/2019] [Indexed: 02/06/2023]
Abstract
The Southern Ocean represents a continuous stretch of circumpolar marine habitat, but the potential physical and ecological drivers of evolutionary genetic differentiation across this vast ecosystem remain unclear. We tested for genetic structure across the full circumpolar range of the white-chinned petrel (Procellaria aequinoctialis) to unravel the potential drivers of population differentiation and test alternative population differentiation hypotheses. Following range-wide comprehensive sampling, we applied genomic (genotyping-by-sequencing or GBS; 60,709 loci) and standard mitochondrial-marker approaches (cytochrome b and first domain of control region) to quantify genetic diversity within and among island populations, test for isolation by distance, and quantify the number of genetic clusters using neutral and outlier (non-neutral) loci. Our results supported the multi-region hypothesis, with a range of analyses showing clear three-region genetic population structure, split by ocean basin, within two evolutionary units. The most significant differentiation between these regions confirmed previous work distinguishing New Zealand and nominate subspecies. Although there was little evidence of structure within the island groups of the Indian or Atlantic oceans, a small set of highly-discriminatory outlier loci could assign petrels to ocean basin and potentially to island group, though the latter needs further verification. Genomic data hold the key to revealing substantial regional genetic structure within wide-ranging circumpolar species previously assumed to be panmictic.
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Affiliation(s)
- Kalinka Rexer-Huber
- Department of Zoology, University of Otago, Dunedin, New Zealand.,Parker Conservation, Dunedin, New Zealand
| | - Andrew J Veale
- Department of Zoology, University of Otago, Dunedin, New Zealand
| | - Paulo Catry
- MARE - Marine and Environmental Sciences Centre, ISPA - Instituto Universitário, Lisboa, Portugal
| | - Yves Cherel
- Centre d'Etudes Biologiques de Chizé, UMR 7372 du CNRS-La Rochelle Université, Villiers-en-Bois, France
| | - Ludovic Dutoit
- Department of Zoology, University of Otago, Dunedin, New Zealand
| | - Yasmin Foster
- Department of Zoology, University of Otago, Dunedin, New Zealand
| | - John C McEwan
- Invermay Agricultural Centre, AgResearch, Mosgiel, New Zealand
| | | | - Richard A Phillips
- British Antarctic Survey, Natural Environment Research Council, Cambridge, UK
| | - Peter G Ryan
- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, Rondebosch, South Africa
| | | | | | - David R Thompson
- National Institute of Water and Atmospheric Research, Wellington, New Zealand
| | - Jonathan Waters
- Department of Zoology, University of Otago, Dunedin, New Zealand
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Prey remains of brown skua is evidence of the long-term decline in burrow occupancy of blue petrels and thin-billed prions at Mayes Island, Kerguelen. Polar Biol 2019. [DOI: 10.1007/s00300-019-02567-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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McClelland GTW, Altwegg R, van Aarde RJ, Ferreira S, Burger AE, Chown SL. Climate change leads to increasing population density and impacts of a key island invader. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2018; 28:212-224. [PMID: 29055070 DOI: 10.1002/eap.1642] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 10/02/2017] [Indexed: 06/07/2023]
Abstract
The considerable threats of invasive rodents to island biodiversity are likely to be compounded by climate change. Forecasts for such interactions have been most pronounced for the Southern Ocean islands where ameliorating conditions are expected to decrease thermal and resource restrictions on rodents. Firm evidence for changing rodent populations in response to climate change, and demonstrations of associated impacts on the terrestrial environment, are nonetheless entirely absent for the region. Using data collected over three decades on sub-Antarctic Marion Island, we tested empirically whether mouse populations have changed through time and whether these changes can be associated significantly with changing abiotic conditions. Changes in invertebrate populations, which have previously been attributed to mouse predation, but with little explicit demographic analysis, were also examined to determine whether they can be associated with changing mouse populations. The total number of mice on the island at annual peak density increased by 430.0% between 1979-1980 and 2008-2011. This increase was due to an advanced breeding season, which was robustly related to the number of precipitation-free days during the non-breeding season. Mice directly reduced invertebrate densities, with biomass losses of up to two orders of magnitude in some habitats. Such invertebrate declines are expected to have significant consequences for ecosystem processes over the long term. Our results demonstrate that as climate change continues to create ameliorating conditions for invasive rodents on sub-Antarctic islands, the severity of their impacts will increase. They also emphasize the importance of rodent eradication for the restoration of invaded islands.
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Affiliation(s)
- Gregory T W McClelland
- Department of Botany and Zoology, Centre for Invasion Biology, Stellenbosch University, Matieland, South Africa
| | - Res Altwegg
- Department of Statistical Sciences, Centre for Statistics in Ecology, Environment and Conservation, University of Cape Town, Private Bag X3, Rondebosch, 7701, South Africa
- African Climate and Development Initiative, University of Cape Town, Private Bag X3, Rondebosch, 7701, South Africa
| | - Rudi J van Aarde
- Conservation Ecology Research Unit, Department of Zoology and Entomology, University of Pretoria, Hatfield, Pretoria, 0083, South Africa
| | - Sam Ferreira
- Conservation Ecology Research Unit, Department of Zoology and Entomology, University of Pretoria, Hatfield, Pretoria, 0083, South Africa
- Scientific Services, SANParks, Kruger National Park, South Africa
| | - Alan E Burger
- Department of Biology, University of Victoria, Victoria, British Columbia, V8W 3N5, Canada
| | - Steven L Chown
- School of Biological Sciences, Monash University, Victoria, 3800, Australia
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