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Structural aspects of the fish assemblages in an exposed beach in south Brazil

2016; Frontiers Media; Volume: 3; Linguagem: Inglês

10.3389/conf.fmars.2016.05.00078

2296-7745

Nathália Colombo, Correia Alberto, Spach Henry,

Coastal and Marine Management

Event Abstract Back to Event Structural aspects of the fish assemblages in an exposed beach in south Brazil Nathalia Colombo1*, Alberto T. Correia2, 3, 4 and Henry L. Spach1 1 Universidade Federal do Paraná, Ecologia e Conservação, Brazil 2 Centro Interdisciplinar de Investigação Marinha e Ambiental, Portugal 3 Universidade Federal do Paraná, Brazil 4 Faculdade de Ciências da Saúde da Universidade Fernando Pessoa, Portugal Acting as an important element of coastal protection, sandy beaches are the most extensive and well distributed coastal regions of the world (Teixeira & Almeida, 1998; Cazzoli y Goya & Tessler, 2000). They represent the transition between ocean and continental habitats, presenting a relevant set of community structures, complex ecosystems and numerous physical conditions. These environments have been suffering due to rising human occupation in coastal areas, resulting in severe environmental problems (Hoefel, 1998; Sclacher et al., 2007). In Brazil, the picture is a scarce environmental planning associated with poor infrastructures (Blankensteyn, 2006). Sandy beaches are stable and dynamic environments due to their ability to absorb wave energy (Brown & McLanch, 1990). Besides the wave energy, other processes such as wind, tidal range, water circulation patterns and inland freshwater outflow interfere in its dynamics, making beaches physically controlled habitats (Brown & McLanch, 1990; Calliari, 2003). A surf-zone can be defined as the water movement area, between the outermost breaker and the limit of wave uprush. It may be an important habitat for juvenile fish, as it offers protection from predators, due to high turbulence and low visibility, and offers high availability of food (Lasiak, 1986; Saul & Cunningham, 1995). The fish community structure and invertebrate inhabitants of beach environments is often determined by the degree of exposure of the beach. The knowledge about fish fauna is scarce probably due to sampling difficulty in such environments (Bennett, 1988) and little attention has been devoted to tropical and subtropical areas (Araujo & Azevedo, 2001). In Brazil, despite the large number of studies about fish populations, relatively few works focus on the importance of beaches to fish communities (Paiva Filho & Toscano, 1987; Godefroid et al., 1997). The aim of this study was to describe the composition and structure of the fish assemblage in the surf-zone of a Brazilian sandy beach. Furthermore the influence of the temporal scale, represented by months and daily periods (day and night) on the fish structure assemblage were also analysed. Materials and Methods Study site The study was conducted on the northern coast on the state of Espirito Santo, Brazil, on a beach having 8 km located in an island so-called Ilha do Guriri (18°44'21 "S and 39°44'50"W). Biological sampling A seine net 15 m long, 2.8 m deep and with a streched mesh size of 5 mm was used to sample the ichthyofauna of the surf-zone at Guriri. The net was laid vertical to the beach 30 m offshore (in water approximately 1 m deep) by wading. Eighteen halls approximately 300 m apart were made monthly between May 2013 to 2014. In each month nine hauls were made at day and nine hauls at night. Abiotic data as water and air temperature, salinity and pH were also recorded. To test the hypothesis of differences among months and period a PERMANOVA (Anderson et al., 2008) were applied with the abundance data transformed in catch per minute (n/min). Both months and daily periods were considered fixed and orthogonal factors. In order to identify which species were responsible for significant differences in each months and period a SIMPER analysis (Clarke and Warwick., 1994) was conduct. To evaluate the influence of environmental variables on the fish fauna we applied a Distant Based Linear Model (DistLM) (Anderson et al., 2008) using the Akaike’s information criterion (AIC). References Anderson m. J., Gorley r. N.; Clarke k. R. PERMANOVA +for PRIMER: guide to software and statistical methods. PRIMER-E, Plymouth, 2008. Araujo, F. G. & Costa de Azevedo, C.M. Assemblages of Southeast-South Brazilian Coastal Systems Based on the Distribution of Fishes. Estuarine, Coastal and Shelf Science v. 52, p. 729–738, 2001. Blankensteyn, A. O uso do caranguejo maria-farinha Ocypode quadrata (Fabricius) (Crustacea, Ocypodidae) como indicador de impactos antrópicos nas praias arenosas da Ilha de Santa Catarina, Brasil. Revista Brasileira de Zoologia, v.23, n.3, p. 870–876, 2006. Brown, A.C. & Mclachlan. Ecology of sandy shores. New York: Elsevier Science Publishers v.21, 1990 Calliari, L.J; Muehe, D.; Hoefel, F.G & Toldo JR, E. Morfodinâmica praial: uma breve revisão. Revista Brasileira de Oceanografia, São Paulo v. 52, p. 67-68, 2003. Clarke, K. R.; Warwick, R. W. Change in marine communities: an aproach to statistical analysis and interpretation. Plymouth Marine Laboratory, Plymouth, 144 p, 1994. Cazzoli Y Goya, S. & Tessler, M.G. Variações morfológicas espaço-temporais entre as praias de Cibratel e Itanhaém-Suarão, Estado de São Paulo. Revista Brasileira de Oceanografia, São Paulo v.48, n.2, p.151-166, 2000. Figueiredo, J.L. & Menezes N.A. 1978. Manual dos peixes marinhos do Sudeste do Brasil. II. Teleostei (1). Universidade de São Paulo, São Paulo. Figueiredo, J.L. & Menezes N.A. 1980. Manual dos peixes marinhos do Sudeste do Brasil. III. Teleostei (2). Universidade de São Paulo, São Paulo. Figueiredo, J.L. & Menezes N.A. 2000. Manual dos peixes marinhos do Sudeste do Brasil. VI. Teleostei (5). Universidade de São Paulo, São Paulo. Godefroid, R. S.; Hofstaetter, M. & Spach, H. L. Structure of the fish assemblage in the surf zone of the beach at Pontal do Sul, Paraná. Nerítica v. 11, p. 77-93, 1997. Hoefel, F. G. Morfodinâmica de praias arenosas ocêanicas: uma revisão bibliográfica.Itajaí:Universidade do Vale do Itajaí, p. 92, 1998. Lasiak, T. Juveniles, food and the surf zone habitat: implications for teleost nursery áreas. South African Journal of Zoology, 1986. Paiva Filho, A. M. & Toscano, A.P. Estudo comparativo e variação sazonal da ictiofauna na zona entremarés do mar Casado-Guarujã e Mar Pequeno- São Vicente, SP. Boletim Instituto Oceanográfico v.35, n.2, p. 153-165, 1987. Saul, a. C. & Cunningham, P. T. M. Comunidade ictiofaunística da ilha do Bom Abrigo, Cananéia. Brazilian Archives of Bology and Technology, v. 38, n. 4, p. 1053 -1069, 1995. Sclacher, T, A. ; Dugan, J.; Schoeman, D. S; Lastra, M.; Jones, A.; Scapini, F.; Mclaclhan , A. & Defeo, O. Sandy beach at the briknk. Diversity and Distribution p.1-5, 2007. Teixeira, R. L. & Almeida, G. I. Composição da icitiofauna de três praias arenosas de Maceió, AL- Brasil. Museu de Biologia Professor Mello Leitão v. 8, p.21-38, 1998. Keywords: sandy beaches, Surf zone, fish assemblage, Brazil, coastal areas Conference: XIX Iberian Symposium on Marine Biology Studies, Porto, Portugal, 5 Sep - 9 Sep, 2016. Presentation Type: Oral Presentation Topic: 3. OCEANOGRAPHY, MODELLING AND ECOSYSTEM DYNAMICS Citation: Colombo N, Correia AT and Spach HL (2016). Structural aspects of the fish assemblages in an exposed beach in south Brazil. Front. Mar. Sci. Conference Abstract: XIX Iberian Symposium on Marine Biology Studies. doi: 10.3389/conf.FMARS.2016.05.00078 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 30 Apr 2016; Published Online: 02 Sep 2016. * Correspondence: Miss. Nathalia Colombo, Universidade Federal do Paraná, Ecologia e Conservação, Curitiba, Paraná, 81531-970, Brazil, natha.col@hotmail.com Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. 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