TY - JOUR
T1 - Spatial and seasonal distribution patterns of fish assemblages in the Río Champotón, southeastern Mexico
AU - López-López, Eugenia
AU - edeño-Díaz, J. Elías
AU - Romero, Faviel López
AU - Trujillo-Jiménez, Patricia
N1 - Funding Information:
Acknowledgments This paper was financed by the Joint Fund of the National Science and Technology Council (CONACyT-Mexico) and the Campeche state government (Project 31173) as well as by the Research and Postgraduate Studies Secretariat (SIP) of the National Polytechnic Institute (IPN-Mexico).
PY - 2009
Y1 - 2009
N2 - Río Champotón in the Yucatán Peninsula is within the Usumacinta Province, the most diverse in fish fauna in Mexico, and is part of the Mesoamerican hotspot, with high endemism and exceptional habitat loss. The spatial and seasonal variability of its fish fauna and their relation to physical habitat characteristics were studied, finding 53 taxa. Canonical correspondence analysis shows salinity, distance from the river mouth, and substratum type differentiate an estuarine and a freshwater region. Fish fauna replacement was observed, with taxa exclusive to each region: 26 estuarine and 27 freshwater species. Six freshwater species enter the estuarine region when the high river flow depletes salinity. Estuary showed greater seasonal differences in specific richness than the freshwater region, which have sites with higher local specific richness. Despite its small drainage, Río Champotón has a highly diverse fish fauna and some areas are affected by human activity and the hurricane season. Its conservation is of critical importance.
AB - Río Champotón in the Yucatán Peninsula is within the Usumacinta Province, the most diverse in fish fauna in Mexico, and is part of the Mesoamerican hotspot, with high endemism and exceptional habitat loss. The spatial and seasonal variability of its fish fauna and their relation to physical habitat characteristics were studied, finding 53 taxa. Canonical correspondence analysis shows salinity, distance from the river mouth, and substratum type differentiate an estuarine and a freshwater region. Fish fauna replacement was observed, with taxa exclusive to each region: 26 estuarine and 27 freshwater species. Six freshwater species enter the estuarine region when the high river flow depletes salinity. Estuary showed greater seasonal differences in specific richness than the freshwater region, which have sites with higher local specific richness. Despite its small drainage, Río Champotón has a highly diverse fish fauna and some areas are affected by human activity and the hurricane season. Its conservation is of critical importance.
KW - Coastal river
KW - Fish assemblages
KW - Karstic platform
KW - Mesoamerican hotspot
KW - Spatial and seasonal variability
KW - Usumacinta Province
UR - http://www.scopus.com/inward/record.url?scp=67349205849&partnerID=8YFLogxK
U2 - 10.1007/s11160-008-9093-y
DO - 10.1007/s11160-008-9093-y
M3 - Artículo
SN - 0960-3166
VL - 19
SP - 127
EP - 142
JO - Reviews in Fish Biology and Fisheries
JF - Reviews in Fish Biology and Fisheries
IS - 2
ER -