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| Piana,Pitágoras A.; Cardoso,Bárbara F.; Dias,Joilson; Gomes,Luiz C.; Agostinho,Angelo A.; Miranda,Leandro E.. |
| ABSTRACT Populations show spatial-temporal fluctuations in abundance, partly due to random processes and partly due to self-regulatory processes. We evaluated the effects of various external factors on the population numerical abundance of curimba Prochilodus lineatus in the upper Paraná River floodplain, Brazil, over a 19-year period. Panel data analysis was applied to examine the structure of temporal and spatial abundance while controlling auto-regressive processes and spatial non-homogeneity variances that often obscure relationships. As sources of population variation, we considered predation, competition, selected abiotic variables, construction of a dam upstream of the study area, water level and flood intensity during the spawning period. We found... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abiotic conditions; Biological interactions; Dam; Floodplain; Flood pulse. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000300203 |
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