Long-term monitoring for conservation: closing the distribution gap of Arctocephalus australis in central Chile.
Distribution shift
Humboldt Current System
New breeding grounds
Peruvian fur seal
Population abundance
South American fur seal
Southeastern Pacific
Journal
BMC research notes
ISSN: 1756-0500
Titre abrégé: BMC Res Notes
Pays: England
ID NLM: 101462768
Informations de publication
Date de publication:
06 May 2021
06 May 2021
Historique:
received:
10
11
2020
accepted:
23
04
2021
entrez:
7
5
2021
pubmed:
8
5
2021
medline:
13
5
2021
Statut:
epublish
Résumé
Here, we present the first record of stable colonies of the South American fur seal (Arctocephalus australis), in an area where their presence has never been documented (hereafter distribution gap), as well as an update of the current distribution range of the species in central Chile. A national synoptic aerial census of pinnipeds was performed during the austral summer of 2019 on the Chilean coast. An additional aerial census was conducted in the same area during the austral spring of 2019 as well as a maritime census during the austral summer of 2020. The data showed the presence of South American fur seals in central Chile within their well-known distribution gap. The total abundance was registered in three colonies where fur seals were sighted: one non-breeding colony, Punta Topocalma (summer 2019: mean = 46 ± 3; spring 2019: mean = 9 ± 1); and two breeding colonies, Punta Curaumilla (summer 2019: mean = 595 ± 7; spring 2019: mean = 45 ± 4; summer 2020: mean = 744 ± 5) and Isla Santa María (summer 2019: mean = 246 ± 6). Specifically, we suggest that it is crucial to elucidate the origin of the described settled colonies, and to determine whether there has been an augment in the distribution range from either the northern population, the southern population, or both simultaneously.
Identifiants
pubmed: 33957976
doi: 10.1186/s13104-021-05583-y
pii: 10.1186/s13104-021-05583-y
pmc: PMC8103573
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
170Subventions
Organisme : Fondo de Investigación Pesquera y de Acuicultura
ID : FIP 2018-54
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