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Registros recuperados: 3
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Checklist comparison and dominance patterns of the fish fauna at Taim Wetland, South Brazil Neotropical Ichthyology
Garcia,Alexandre M.; Bemvenuti,Marlise A.; Vieira,João P.; Marques,David M. L. Motta; Burns,Marcelo D. M.; Moresco,Alex; Condini,Mario Vinicius L..
Taim Hydrological System is a unique subtropical wetland in southern Brazil harboring an exceptional biological diversity. In 1978, an ecological reserve was established to protect part of this area from increasing anthropogenic impacts in its surroundings. Fishes have been poorly investigated in this system. Based on a multi-gear sampling study encompassing several years (2001-2005), and on comparisons with previous fish inventories, we provide an up-to-date species list of fishes occurring in the Taim Wetland. In addition, we made the first preliminary description of fish dominance patterns found in the main lakes of the system (Flores, Nicola, Jacaré and Mangueira). Checklist comparison resulted in 62 fish species distributed in 24 families, with...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Subtropical wetland; Neotropical fishes; Ecological Reserve; Invasive species; Patos-Mirim Lagoon complex.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000200012
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Evidence of habitat fragmentation affecting fish movement between the Patos and Mirim coastal lagoons in southern Brazil Neotropical Ichthyology
Burns,Marcelo D. M.; Garcia,Alexandre M.; Vieira,João P.; Bemvenuti,Marlise A.; Marques,David M. L. Motta; Condini,Vinicius.
The communication between the Patos and Mirim lagoon systems occurs via a natural channel called São Gonçalo. In 1977, a dam was built in this channel to prevent entrance of saline waters from Patos Lagoon estuary into the Mirim Lagoon. Our results showed an abrupt discontinuity in salinity and fish species distribution along the study sites. Sites below the dam showed salinity values higher than zero, whereas sites above had zero salinity values across all sampling periods. Marine and estuarine fishes (e.g., mullets Mugil platanus, M. curema, silversides Odontesthes argentinensis, Atherinella brasiliensis, sardine Brevoortia pectinata, and white croaker Micropogonias furnieri) were not captured above the dam. If these juvenile fishes could enter the Mirim...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dam; Fish migration; Artisanal fishery; Estuary.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000100006
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Preliminary examination of food web structure of Nicola Lake (Taim Hydrological System, south Brazil) using dual C and N stable isotope analyses Neotropical Ichthyology
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
Registros recuperados: 3
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