Hydrophytic Cyperaceae from the Araguaia river basin, Brazil
نویسندگان
چکیده
منابع مشابه
Checklist of aquatic and marshy Monocotyledons from the Araguaia River basin, Brazilian Cerrado
BACKGROUND The Araguaia River basin runs through the states of Goiás, Mato Grosso, Tocantins, and Pará, covering 373,000 Km(2), mostly within the Brazilian Cerrado. The region has a wide variety of wetlands. The climate is characterized by high temperatures and strongly seasonal precipitation. There are two well defined seasons: the dry season (winter-spring) and the rainy season (summer- fall)...
متن کامل[Work-related accidents in traditional fishermen from the Medium Araguaia River region, Tocantins, Brazil].
This is a cross-sectional study of work-related accidents among traditional fishermen in the Medium Araguaia River region of Tocantins, Brazil. From June to August 2002, fishermen from the Municipality of Araguacema were interviewed about the organization of their work activities and work-related accidents during the previous six months. Of the 92 participating fishermen, 56 reported having suf...
متن کاملTwo new species of Leporinus Agassiz, 1829 from Araguaia-Tocantins system, Amazon basin, Brazil (Ostariophysi, Anostomidae).
Two new species of genus Leporinus from the Araguaia-Tocantins system, Amazon, Brazil, are described. Leporinus unitaeniatus n. sp. is distinguished from the remaining species of this genus by the presence of a conspicuous longitudinal dark brown bar along the lateral line on the flanks, and Leporinus geminis n. sp. is distinguished by an inconspicuous dark bar combined with three large and ver...
متن کاملFirst occurrence of Anodontites tenebricosus (Bivalvia: Mycetopodidae) in the Tocantins-Araguaia basin, Brazil.
Anodontites tenebricosus (Lea, 1834) typically inhabits lotic environments, partially buried in sandy or gravel substrate in South America waters (Bonetto, 1967; Castellanos and Landoni, 1990). The species occurs in four Neotropical sub-regions, and, in Brazil, it has been mostly found in the Paraná basin (Mansur and Pereira, 2006; Graf and Cummings, 2007; Bogan and Cummings, 2011; Troncon and ...
متن کاملThe Araguaia River as an Important Biogeographical Divide for Didelphid Marsupials in Central Brazil.
The riverine barrier model suggests that rivers play a significant role in separating widespread organisms into isolated populations. In this study, we used a comparative approach to investigate the phylogeography of 6 didelphid marsupial species in central Brazil. Specifically, we evaluate the role of the mid-Araguaia River in differentiating populations and estimate divergence time among line...
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ژورنال
عنوان ژورنال: Rodriguésia
سال: 2011
ISSN: 2175-7860
DOI: 10.1590/s2175-78602011000400012