Distribution and abundance of water buffalo populations in eastern Amazonian floodplains.
In: Management of Biological Invasions, Jg. 12 (2021-06-01), Heft 2, S. 408-419
Online
academicJournal
Zugriff:
The Asian water buffalo was introduced in Brazil in in the late nineteenth century. Today the country harbours one of the largest populations in the world, most of it in the Amazon basin. The majority of populations are domesticated, but feral populations have established in several protected areas. One of the largest, comprising both feral and free-living domestic individuals, is in Lago Piratuba Biological Reserve (LPBR) and Maracá-Jipioca Ecological Station (MJES) in Amapá state. Water buffalo cause serious damage to floodplains in both areas and their population control has been recommended. In 2017, we conducted aerial surveys using the double-count technique to estimate the size and distribution of the water buffalo population at LPBR and MJES. To assess population trends, we compared our results with two previous population estimates (2007 and 2013) for the same areas as well as with data from the Brazilian agricultural census (2007 to 2017) for the region. We estimated a population of 17,782 and 686 buffalo at LPBR and MJES, respectively. Compared to previous surveys, the population at MJES has remained stable, but the LPBR population declined by more than 40% compared to the last survey. The decline was virtually limited to one survey sector at LPBR. The decline is mirrored by the agricultural census data, but its reasons are unclear. We recommend continued monitoring, as the population can quickly rebound to previous numbers if left unchecked. [ABSTRACT FROM AUTHOR]
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Distribution and abundance of water buffalo populations in eastern Amazonian floodplains.
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Autor/in / Beteiligte Person: | Carvalho Jr., Elildo A. R. ; Gonçalves, Henrique S. ; Pinha, Patricia R. S. ; Coutinho, Iranildo ; Haugaasen, Torbjørn |
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Zeitschrift: | Management of Biological Invasions, Jg. 12 (2021-06-01), Heft 2, S. 408-419 |
Veröffentlichung: | 2021 |
Medientyp: | academicJournal |
ISSN: | 1989-8649 (print) |
DOI: | 10.3391/mbi.2021.12.2.13 |
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