Dear all,
We are pleased to announce to you our new publication in Aquatic Mammals
Journal:
*Pivari, D.; Pacca, H. M. & Sebrian, T. 2017. Occurrence of
Boto-do-Araguaia (**/Inia araguaiaensis/**) in a Region of the Araguaia
River, Brazil, Documented for an Environmental Impact Study for a
Hydroelectric Dam. Aquatic Mammals 2017, 43(5), 530-536.*
Abstract:
This study was part of a environmental impact studies carried out in
2009 related to a dam to be built in the Araguaia River, Brazil. Was
verified the presence of Boto-do-Araguaia, /Inia araguaiaensis/ and
estimate its preference in use of habitats in the dam´s area of
influence. The methodology used was the active search of the Botos. 183h
of sampling efforts were done during the different hydrological seasons
of the river. A total of 119 Botos were spoted in 42 sites of the
Araguaia river. 60% of them were seen in more preserved areas with some
human action. There was a greater number of Botos spoted during seasons
of rising and high (n = 87) compared to the falling and low season (n =
29) (QQ = 116, p <0.0001). The ratio of Botos in flooded forest and
river-bed changes on the rising / high and falling / low seasons. In the
falling / low, 66% of Botos were found in the river-bed and backwater
regions (QQ = 16.5, p <0.0001). In the rising / high season, they were
often associated with flooded forest due to the demand for food
resources (64%) (QQ = 8.10, p = 0.0071). The foraging behavior was the
most observed category in rising (100%), low (100%) and falling (77%)
seasons, whereas the traveling behavior was predominant in the high
season (63%). /I.//araguaiaensis/is a recentlydiscovered species (2014).
It is known that this population is isolated in the basins of Tocantins
and Araguaia rivers and is threatened due to habitat loss by the intense
human occupation of the region.
This paper is available at:http://ecotonus.com.br/site/43-5_Pivari-1.pdf
Or can be requested at: dani...@ecotonus.com.br
<mailto:dani...@ecotonus.com.br>
Cheers,
Daniela Pivari
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