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| Garcia,Alexandre M.; Hoeinghaus,David J.; Vieira,João P.; Winemiller,Kirk O.; Marques,David M. L. Motta; Bemvenuti,Marlise A.. |
| Taim Ecological Reserve is located within the Taim Hydrological System and was created to protect a heterogeneous and productive landscape harboring exceptional biological diversity in southern Brazil. Using stable isotope ratio analyses of carbon (delta13C) and nitrogen (delta15N), we provide a preliminary description of the food web structure, including estimates of production sources supporting fish populations and vertical trophic structure, within a representative lake of this system. A total of 21 organisms (5 macrophytes, 3 mollusks and 13 adult fishes) representing 16 species were collected for isotope analysis. Fishes had delta13C values ranging from -24.30º/oo to -28.31º/oo , showing concordance with the range of values observed for macrophytes... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Subtropical wetland; Neotropical fishes; Patos-Mirim Lagoon complex; Long-Term Ecological Research (LTER); Brazilian Long Term Ecological Research (PELD). |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000200014 |
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| Hoeinghaus,David J.; Layman,Craig A.; Arrington,D. Albrey; Winemiller,Kirk O.. |
| In their native habitats of black- and clear-water Neotropical rivers, large predatory cichlids of the genus Cichla are an important food and recreational resource. Understanding patterns of movement for these species is necessary for effective management and conservation; however, no information is available on movement in natural fluvial populations. Therefore, we initiated a cooperative mark-recapture program with local sport-fishing groups to evaluate movement of Cichla in the Cinaruco River, Venezuela and to promote conservation awareness. Between January 1999 and May 2003, we tagged 2,224 individuals of three species of Cichla (C. temensis, C. orinocensis, and C. intermedia) with uniquely numbered floy tags. Over 52 months, 2.8% of the tagged fishes... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cinaruco River; Conservation; Mark-recapture; Pavón; Tucunaré. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252003000200006 |
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