Portal de Periódicos da CAPES

Artigo Acesso aberto Produção Nacional Revisado por pares

BIBTEX RIS

Factoring scales of spatial and temporal variation in fish abundance in a subtropical estuary

2012; Inter-Research; Volume: 461; Linguagem: Inglês

10.3354/meps09798

1616-1599

Alexandre Garcia, JP Vieira, Kirk O. Winemiller, Leonardo Evangelista Moraes, Eduardo Tavares Páes,

Coral and Marine Ecosystems Studies

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 461:121-135 (2012) - DOI: https://doi.org/10.3354/meps09798 Factoring scales of spatial and temporal variation in fish abundance in a subtropical estuary A. M. Garcia1,*,**, J. P. Vieira1, K. O. Winemiller2, L. E. Moraes1, E. T. Paes3,** 1Instituto de Oceanografia, Laboratório de Ictiologia, Universidade Federal de Rio Grande (FURG), Caixa Postal 474, Rio Grande, RS 96201-900, Brazil 2Department of Wildlife and Fisheries Sciences, Texas A&M University, College Station, Texas 77843-2258, USA 3Instituto de Sócio Ambiental e dos Recursos Hídricos, Universidade Federal Rural da Amazônia (UFRA), Caixa Postal 917, Belém, PA 66077-530, Brazil **Email: amgarcia@mikrus.com.br**These authors contributed equally to this work ABSTRACT: We employed a new approach linking multivariate and time series analyses to identify common versus unique spatiotemporal components of abundance variation of marine spawning fishes recruiting into a subtropical Western Atlantic estuary. Based on a 10 yr standardized monthly data set, we also investigated patterns of association for local and regional factors with annual and inter-annual variation in abundance of 5 dominant marine estuarine-dependent fishes. The total amount of variation in fish abundance explained by environmental variables was 22.4%. After factoring out shared spatiotemporal variation (0.8%), our analysis showed that temporal components had an almost 5-fold greater contribution (28.0%) than spatial components (6.4%) in explaining the variation in abundance of the 5 species. Most of the variation across the temporal scale (58.5%) was associated with annual (from 0.5 to 1.3 yr) rather than multi-year oscillations (>2 yr). Such annual patterns were probably associated with adaptations of marine estuarine-dependent fishes for exploiting predictable pulses in seasonal productivity typically found in subtropical estuaries. In contrast, inter-annual variation in abundance occurring at a scale of 3 to 7 yr could be attributed to rainfall anomalies associated with El Niño Southern Oscillation (ENSO) events, whereas those occurring at a scale of 2 yr could be influenced by the Southern Annular Mode (SAM). Our findings corroborate the hypothesis that prevalent annual patterns of variation in the abundance of marine estuarine-dependent fishes are associated with predictable productivity pulses linked to the annual temperature regime, whereas inter-annual variations in fish abundance are associated with the influence of large-scale climatic phenomena. KEY WORDS: Time-series analyses · Partitioning variation · Estuarine-dependent species · Mullet · Whitemouth croaker · Argentine menhaden · Patos Lagoon estuary · Brazilian-LTER Full text in pdf format PreviousNextCite this article as: Garcia AM, Vieira JP, Winemiller KO, Moraes LE, Paes ET (2012) Factoring scales of spatial and temporal variation in fish abundance in a subtropical estuary. Mar Ecol Prog Ser 461:121-135. https://doi.org/10.3354/meps09798 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 461. Online publication date: August 08, 2012 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2012 Inter-Research.