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| Rosa,Ierecê Lucena; Oliveira,Tacyana P. R.; Castro,André L. C.; Moraes,Luiz E. de Souza; Xavier,Josias H. A.; Nottingham,Mara C.; Dias,Thelma L. P.; Bruto-Costa,Leonardo V.; Araújo,Maria E.; Birolo,Alesandra B.; Mai,Ana C. G.; Monteiro-Neto,Cassiano. |
| This paper provides a case study of a threatened seahorse species, Hippocampus reidi, highlighting the importance of using ecological information to assist conservation and management initiatives. Underwater visual sighting data (50 x 2m transect) gathered along the NE, SE and S portions of the Brazilian coast revealed an unequal distribution across localities, perhaps related to harvesting pressure, and a mean density of 0.026 ind.m-2. Our findings suggest some restricted spatial use by H. reidi, which was consistent with its estimated home range, and with re-sighting of specimens. Reproduction was recorded year-round, however productive peaks may exist. Components of habitat structure mostly used as anchoring points were mangrove plants, macroalgae,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Longsnout seahorse; Mangrove; Habitat use; Population structure; Brazil; Conservation. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252007000300020 |
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| Araújo,Janaina P.; Araújo,Maria E.; Souto,Antonio; Parente,Cristiano L.; Geise,Lena. |
| Data on Sotalia guianensis Van Bénéden, 1864 occurrence on the beaches of Pernambuco (Northeastern Brazil) is restricted to information on stranding and on printed material from local newspapers; actual observations of such animals have not been published. This study intends to determine the use of habitat, behavioral activities and assess the relationships between environmental factors and the recorded behavior. Observations were conducted on open sea coastal areas, on the beaches of Olinda and Piedade, as well as in sheltered areas, in the ports of Recife and Suape. Monitoring was carried out every month in each area, during two consecutive days, from September 2004 to August 2005. Results corroborate that this species prefers to occupy more protected... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Behavioral activities; Environmental factors; Estuarine dolphin. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000400032 |
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