Perturbation drives changing metapopulation dynamics in a top marine predator
Research output: Contribution to journal › Journal article › Research › peer-review
Standard
Perturbation drives changing metapopulation dynamics in a top marine predator. / Carroll, Emma L.; Hall, Ailsa; Olsen, Morten Tange; Onoufriou, Aubrie B.; Gaggiotti, Oscar E.; Russell, Debbie J. F.
In: Proceedings of the Royal Society B: Biological Sciences, Vol. 287, No. 1928, 20200318, 2020.Research output: Contribution to journal › Journal article › Research › peer-review
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Perturbation drives changing metapopulation dynamics in a top marine predator
AU - Carroll, Emma L.
AU - Hall, Ailsa
AU - Olsen, Morten Tange
AU - Onoufriou, Aubrie B.
AU - Gaggiotti, Oscar E.
AU - Russell, Debbie J. F.
PY - 2020
Y1 - 2020
N2 - Metapopulation theory assumes a balance between local decays/extinctions and local growth/new colonisations. Here we investigate whether recent population declines across part of the UK harbour seal range represent normal metapopulation dynamics or are indicative of perturbations potentially threatening the metapopulation viability, using 20 years of population trends, location tracking data (n= 380), and UK-wide, multi-generational population genetic data (n= 269). First, we use microsatellite data to show that two genetic groups previously identified are distinct metapopulations: northern and southern. Then, we characterize the northern metapopulation dynamics in two different periods, before and after the start of regional declines (pre-/peri-perturbation). We identify source-sink dynamics across the northern metapopulation, with two putative source populations apparently supporting three likely sink populations, and a recent metapopulation-wide disruption of migration coincident with the perturbation. The northern metapopulation appears to be in decay, highlighting that changes in local populations can lead to radical alterations in the overall metapopulation's persistence and dynamics.
AB - Metapopulation theory assumes a balance between local decays/extinctions and local growth/new colonisations. Here we investigate whether recent population declines across part of the UK harbour seal range represent normal metapopulation dynamics or are indicative of perturbations potentially threatening the metapopulation viability, using 20 years of population trends, location tracking data (n= 380), and UK-wide, multi-generational population genetic data (n= 269). First, we use microsatellite data to show that two genetic groups previously identified are distinct metapopulations: northern and southern. Then, we characterize the northern metapopulation dynamics in two different periods, before and after the start of regional declines (pre-/peri-perturbation). We identify source-sink dynamics across the northern metapopulation, with two putative source populations apparently supporting three likely sink populations, and a recent metapopulation-wide disruption of migration coincident with the perturbation. The northern metapopulation appears to be in decay, highlighting that changes in local populations can lead to radical alterations in the overall metapopulation's persistence and dynamics.
KW - local population
KW - gene flow
KW - harbour seal
KW - SEALS PHOCA-VITULINA
KW - HARBOR SEALS
KW - F-STATISTICS
KW - POPULATION
KW - DISPERSAL
KW - CONSERVATION
KW - MANAGEMENT
KW - MIGRATION
KW - IDENTIFICATION
KW - ABUNDANCE
U2 - 10.1098/rspb.2020.0318
DO - 10.1098/rspb.2020.0318
M3 - Journal article
C2 - 32486973
VL - 287
JO - Proceedings of the Royal Society B: Biological Sciences
JF - Proceedings of the Royal Society B: Biological Sciences
SN - 0962-8452
IS - 1928
M1 - 20200318
ER -
ID: 247447789