Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/27163
Title: Effects of local and large-scale climate patterns on estuarine resident fishes: the example of Pomatoschistus microps and Pomatoschistus minutus
Authors: Nyitrai, Daniel 
Martinho, Filipe 
Dolbeth, Marina 
Rito, João 
Pardal, Miguel A. 
Keywords: Pomatoschistus microps; Pomatoschistus minutus; Mondego estuary; environmental variables; river runoff; NAO
Issue Date: 20-Dec-2013
Publisher: Elsevier
Citation: NYITRAI, Daniel [et al.] - Effects of local and large-scale climate patterns on estuarine resident fishes: the example of Pomatoschistus microps and Pomatoschistus minutus. "Estuarine, Coastal and Shelf Science". ISSN 0272-7714. Vol. 135 (2014) p. 260-268
metadata.degois.publication.title: Estuarine, Coastal and Shelf Science
metadata.degois.publication.volume: 135
metadata.degois.publication.issue: 135
Abstract: Large-scale and local climate patterns are known to influence several aspects of the life cycle of marine fish. In this paper, we used a 9-year database (2003–2011) to analyse the populations of two estuarine resident fishes, Pomatoschistus microps and Pomatoschistus minutus, in order to determine their relationships with varying environmental stressors operating over local and large scales. This study was performed in the Mondego estuary, Portugal. Firstly, the variations in abundance, growth, population structure and secondary production were evaluated. These species appeared in high densities in the beginning of the study period, with subsequent occasional high annual density peaks, while their secondary production was lower in dry years. The relationships between yearly fish abundance and the environmental variables were evaluated separately for both species using Spearman correlation analysis, considering the yearly abundance peaks for the whole population, juveniles and adults. Among the local climate patterns, precipitation, river runoff, salinity and temperature were used in the analyses, and North Atlantic Oscillation (NAO) index and sea surface temperature (SST) were tested as large-scale factors. For P. microps, precipitation and NAO were the significant factors explaining abundance of the whole population, the adults and the juveniles as well. Regarding P. minutus, for the whole population, juveniles and adults river runoff was the significant predictor. The results for both species suggest a differential influence of climate patterns on the various life cycle stages, confirming also the importance of estuarine resident fishes as indicators of changes in local and large-scale climate patterns, related to global climate change.
URI: https://hdl.handle.net/10316/27163
ISSN: 0272-7714
DOI: 10.1016/j.ecss.2013.10.030
Rights: openAccess
Appears in Collections:FCTUC Ciências da Vida - Artigos em Revistas Internacionais

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