dc.contributor.author |
Prado, Jonatas Henrique Fernandes do |
|
dc.contributor.author |
Mattos, Paulo Henrique |
|
dc.contributor.author |
Silva, Kleber Grübel da |
|
dc.contributor.author |
Secchi, Eduardo Resende |
|
dc.date.accessioned |
2016-02-13T22:22:30Z |
|
dc.date.available |
2016-02-13T22:22:30Z |
|
dc.date.issued |
2016 |
|
dc.identifier.citation |
PRADO, Jonatas Henrique Fernandes do. et al. Long-Term Seasonal and Interannual Patterns of Marine Mammal Strandings in Subtropical Western South Atlantic. Plos One, v. 11, n. 1, p. 1-23, 2016. Disponível em:<http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0146339>. Acesso em: 11 fev. 2016. |
pt_BR |
dc.identifier.issn |
1932-6203 |
|
dc.identifier.uri |
http://repositorio.furg.br/handle/1/5927 |
|
dc.description.abstract |
Understanding temporal patterns of marine mammal occurrence is useful for establishing
conservation strategies. We used a 38 yr-long dataset spanning 1976 to 2013 to describe
temporal patterns and trends in marine mammal strandings along a subtropical stretch of
the east coast of South America. This region is influenced by a transitional zone between
tropical and temperate waters and is considered an important fishing ground off Brazil. Generalized
Additive Models were used to evaluate the temporal stranding patterns of the most
frequently stranded species. Forty species were documented in 12,540 stranding events.
Franciscana (n = 4,574), South American fur seal, (n = 3,419), South American sea lion (n =
2,049), bottlenose dolphins (n = 293) and subantarctic fur seal (n = 219) were the most frequently
stranded marine mammals. The seasonality of strandings of franciscana and bottlenose
dolphin coincided with periods of higher fishing effort and strandings of South
American and subantarctic fur seals with post-reproductive dispersal. For South American
sea lion the seasonality of strandings is associated with both fishing effort and post-reproductive
dispersal. Some clear seasonal patterns were associated with occurrence of cold-
(e.g. subantarctic fur seal) and warm-water (e.g. rough-toothed dolphin) species in winter
and summer, respectively. Inter-annual increases in stranding rate were observed for franciscana
and South American fur seal and these are likely related to increased fishing effort
and population growth, respectively. For subantarctic fur seal the stranding rate showed a
slight decline while for bottlenose dolphin it remained steady. No significant year to year variation
in stranding rate was observed for South American sea lion. The slight decrease in
frequency of temperate/polar marine mammals and the increased occurrence of subtropical/tropical
species since the late 1990s might be associated with environmental changes
linked to climate change. This long-term study indicates that temporal stranding patterns of
marine mammals might be explained by either fishing-related or environmental factors. |
pt_BR |
dc.language.iso |
eng |
pt_BR |
dc.rights |
open access |
pt_BR |
dc.title |
Long-Term Seasonal and Interannual Patterns of Marine Mammal Strandings in Subtropical Western South Atlantic |
pt_BR |
dc.type |
article |
pt_BR |
dc.identifier.doi |
10.1371/journal.pone.0146339 |
pt_BR |