Ichthyofauna composition across a wave: energy gradient on Southern Brazil beaches
Wave action in sandy beach surf zones and its influence on species composition were evaluated at three sites at Pontal do Paraná, Paraná State, between June/2004 and May/2005. At each sampling site, five hauls were performed monthly using a 15 m long, 2.6 m height beach seine with a 5 mm mesh-size....
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Universidade de São Paulo
2007-12-01
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| Series: | Brazilian Journal of Oceanography |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-87592007000400005 |
| _version_ | 1818758432161792000 |
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| author | Fabiana Cézar Félix Henry Louis Spach Pietro Simon Moro Carlos Werner Hackradt Guilherme Mac Laren Nogueira de Queiroz Maurício Hostim-Silva |
| author_facet | Fabiana Cézar Félix Henry Louis Spach Pietro Simon Moro Carlos Werner Hackradt Guilherme Mac Laren Nogueira de Queiroz Maurício Hostim-Silva |
| author_sort | Fabiana Cézar Félix |
| collection | DOAJ |
| description | Wave action in sandy beach surf zones and its influence on species composition were evaluated at three sites at Pontal do Paraná, Paraná State, between June/2004 and May/2005. At each sampling site, five hauls were performed monthly using a 15 m long, 2.6 m height beach seine with a 5 mm mesh-size. Samplings were carried out at low water spring tides during daylight. A total of 26,866 fishes were collected, amounting to a total weight of 84,838 kg, which were distributed amongst 28 families and 63 taxa. Multi- and univariated methods used indicated that sheltered and moderately exposed beach samples had similar ichthyofaunal composition, being clupeids and engraulids the most abundant at these beaches. Although abiotic factors differed significantly between beaches, depth appears to exert the major influence on ichthyofauna structure by providing less turbulent waters which might have permitted shoals maintenance. Conversely, exposed beach samples differed largely from the other beaches and were influenced primarily by wave height and salinity variables. These were displayed at CCA diagram and through the occurrence of P. virginicus, M. littoralis and T. goodei.<br>A ação das ondas em zonas de arrebentação de praias arenosas e sua influência na composição de espécies foram avaliadas em três praias em Pontal do Paraná, Paraná, entre junho/2004 e maio/2005. Cinco arrastos mensais foram realizados em cada local amostral durante maré de sizígia em período diurno, usando uma rede de arrasto de 15 m de comprimento, 2,6 m de altura e malha de 5 mm. Um total de 26.866 peixes foram coletados pesando aproximadamente 84 kg e distribuídos em 28 famílias e 63 taxa. Métodos multi- e univariados utilizados indicaram que as amostras das praias protegidas e moderadas foram semelhantes em composição da ictiofauna, sendo os clupeídeos e engraulídeos os mais abundantes nestas praias. Por mais que os fatores abióticos sejam diferentes entre as praias, a profundidade parece exercer maior influência na estruturação da ictiofauna provendo águas menos turbulentas, o que pode ter permitido a manutenção de cardumes. Em tendência oposta, as amostras da praia exposta diferem em grande parte das outras sendo influenciada principalmente pelas variáveis altura de onda e salinidade mostradas no diagrama CCA e pela ocorrência de P. virginicus, M. littoralis e T. goodei. |
| first_indexed | 2024-12-18T06:26:44Z |
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| institution | Directory Open Access Journal |
| issn | 1679-8759 1982-436X |
| language | English |
| last_indexed | 2024-12-18T06:26:44Z |
| publishDate | 2007-12-01 |
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| series | Brazilian Journal of Oceanography |
| spelling | doaj.art-e800b30963cd4c92b93fa9e8130585e52022-12-21T21:18:02ZengUniversidade de São PauloBrazilian Journal of Oceanography1679-87591982-436X2007-12-0155428129210.1590/S1679-87592007000400005Ichthyofauna composition across a wave: energy gradient on Southern Brazil beachesFabiana Cézar FélixHenry Louis SpachPietro Simon MoroCarlos Werner HackradtGuilherme Mac Laren Nogueira de QueirozMaurício Hostim-SilvaWave action in sandy beach surf zones and its influence on species composition were evaluated at three sites at Pontal do Paraná, Paraná State, between June/2004 and May/2005. At each sampling site, five hauls were performed monthly using a 15 m long, 2.6 m height beach seine with a 5 mm mesh-size. Samplings were carried out at low water spring tides during daylight. A total of 26,866 fishes were collected, amounting to a total weight of 84,838 kg, which were distributed amongst 28 families and 63 taxa. Multi- and univariated methods used indicated that sheltered and moderately exposed beach samples had similar ichthyofaunal composition, being clupeids and engraulids the most abundant at these beaches. Although abiotic factors differed significantly between beaches, depth appears to exert the major influence on ichthyofauna structure by providing less turbulent waters which might have permitted shoals maintenance. Conversely, exposed beach samples differed largely from the other beaches and were influenced primarily by wave height and salinity variables. These were displayed at CCA diagram and through the occurrence of P. virginicus, M. littoralis and T. goodei.<br>A ação das ondas em zonas de arrebentação de praias arenosas e sua influência na composição de espécies foram avaliadas em três praias em Pontal do Paraná, Paraná, entre junho/2004 e maio/2005. Cinco arrastos mensais foram realizados em cada local amostral durante maré de sizígia em período diurno, usando uma rede de arrasto de 15 m de comprimento, 2,6 m de altura e malha de 5 mm. Um total de 26.866 peixes foram coletados pesando aproximadamente 84 kg e distribuídos em 28 famílias e 63 taxa. Métodos multi- e univariados utilizados indicaram que as amostras das praias protegidas e moderadas foram semelhantes em composição da ictiofauna, sendo os clupeídeos e engraulídeos os mais abundantes nestas praias. Por mais que os fatores abióticos sejam diferentes entre as praias, a profundidade parece exercer maior influência na estruturação da ictiofauna provendo águas menos turbulentas, o que pode ter permitido a manutenção de cardumes. Em tendência oposta, as amostras da praia exposta diferem em grande parte das outras sendo influenciada principalmente pelas variáveis altura de onda e salinidade mostradas no diagrama CCA e pela ocorrência de P. virginicus, M. littoralis e T. goodei.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-87592007000400005Perfil praialGradiente energéticoProfundidadeAltura de ondaCardumesPontal do ParanáBeach slopeEnergy gradientDepthWave heightShoalsPontal do Paraná |
| spellingShingle | Fabiana Cézar Félix Henry Louis Spach Pietro Simon Moro Carlos Werner Hackradt Guilherme Mac Laren Nogueira de Queiroz Maurício Hostim-Silva Ichthyofauna composition across a wave: energy gradient on Southern Brazil beaches Brazilian Journal of Oceanography Perfil praial Gradiente energético Profundidade Altura de onda Cardumes Pontal do Paraná Beach slope Energy gradient Depth Wave height Shoals Pontal do Paraná |
| title | Ichthyofauna composition across a wave: energy gradient on Southern Brazil beaches |
| title_full | Ichthyofauna composition across a wave: energy gradient on Southern Brazil beaches |
| title_fullStr | Ichthyofauna composition across a wave: energy gradient on Southern Brazil beaches |
| title_full_unstemmed | Ichthyofauna composition across a wave: energy gradient on Southern Brazil beaches |
| title_short | Ichthyofauna composition across a wave: energy gradient on Southern Brazil beaches |
| title_sort | ichthyofauna composition across a wave energy gradient on southern brazil beaches |
| topic | Perfil praial Gradiente energético Profundidade Altura de onda Cardumes Pontal do Paraná Beach slope Energy gradient Depth Wave height Shoals Pontal do Paraná |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-87592007000400005 |
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