Alexandre da Gama Fernandes Vieira-Júnior , Breno Silva Macário , Steven J. Presley , Michael R. Willig , André Luiz Machado Pessanha
{"title":"海洋暴露的热带海滩中藻类漂移和形态动力学条件对鱼类群落和摄食行会的影响","authors":"Alexandre da Gama Fernandes Vieira-Júnior , Breno Silva Macário , Steven J. Presley , Michael R. Willig , André Luiz Machado Pessanha","doi":"10.1016/j.ecss.2025.109321","DOIUrl":null,"url":null,"abstract":"<div><div>The surf zones of sandy beaches are habitats in which morphodynamic characteristics (e.g., tide-modified versus wave-dominated beaches) influence the distribution of fish species. In addition, algal drift from adjacent coastal ecosystems (allochthonous material) is an important source of spatial heterogeneity within sandy beach habitats, providing refuge and food resources for fish species. We evaluated the influence of algal drift on the abundance, richness, and biomass of fish assemblages and feeding guilds (i.e. zooplanktivores, piscivores, opportunists and benthivores) on beaches with different exposures to wave conditions. For the entire fish fauna, abundance and species richness, but not biomass, differed between beach exposures. Similarly, abundance and biomass, but not richness of zooplanktivorous fish differed between tide-modified and wave-dominated beaches. In contrast, abundance, but not richness or biomass of benthivorous fish differed among categories of algal volume, while morphodynamic characteristics had no main or interactive effects. Finally, morphodynamic characteristics interacted with differences among categories of algal volume to affect species richness but not abundance or biomass of fish in the opportunist's guild. The size of individuals in the entire fish fauna and in the opportunists guild was affected by beach type and algae volume, whereas in the zooplanktivorous guild size was only affected by algal volume. The size of fish in the benthivorous guild was not affected by algal volume in tide-modified beaches. The responses of fish to morphodynamic conditions and algal drift were guild-specific, suggesting that different strategies may need to be implemented for the conservation or management of these trophic groups.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"320 ","pages":"Article 109321"},"PeriodicalIF":2.6000,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of algal drift and morphodynamic conditions on the fish assemblages and feeding guilds in ocean-exposed tropical beaches\",\"authors\":\"Alexandre da Gama Fernandes Vieira-Júnior , Breno Silva Macário , Steven J. Presley , Michael R. Willig , André Luiz Machado Pessanha\",\"doi\":\"10.1016/j.ecss.2025.109321\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The surf zones of sandy beaches are habitats in which morphodynamic characteristics (e.g., tide-modified versus wave-dominated beaches) influence the distribution of fish species. In addition, algal drift from adjacent coastal ecosystems (allochthonous material) is an important source of spatial heterogeneity within sandy beach habitats, providing refuge and food resources for fish species. We evaluated the influence of algal drift on the abundance, richness, and biomass of fish assemblages and feeding guilds (i.e. zooplanktivores, piscivores, opportunists and benthivores) on beaches with different exposures to wave conditions. For the entire fish fauna, abundance and species richness, but not biomass, differed between beach exposures. Similarly, abundance and biomass, but not richness of zooplanktivorous fish differed between tide-modified and wave-dominated beaches. In contrast, abundance, but not richness or biomass of benthivorous fish differed among categories of algal volume, while morphodynamic characteristics had no main or interactive effects. Finally, morphodynamic characteristics interacted with differences among categories of algal volume to affect species richness but not abundance or biomass of fish in the opportunist's guild. The size of individuals in the entire fish fauna and in the opportunists guild was affected by beach type and algae volume, whereas in the zooplanktivorous guild size was only affected by algal volume. The size of fish in the benthivorous guild was not affected by algal volume in tide-modified beaches. The responses of fish to morphodynamic conditions and algal drift were guild-specific, suggesting that different strategies may need to be implemented for the conservation or management of these trophic groups.</div></div>\",\"PeriodicalId\":50497,\"journal\":{\"name\":\"Estuarine Coastal and Shelf Science\",\"volume\":\"320 \",\"pages\":\"Article 109321\"},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2025-04-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Estuarine Coastal and Shelf Science\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0272771425001994\",\"RegionNum\":3,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MARINE & FRESHWATER BIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Estuarine Coastal and Shelf Science","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0272771425001994","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MARINE & FRESHWATER BIOLOGY","Score":null,"Total":0}
Influence of algal drift and morphodynamic conditions on the fish assemblages and feeding guilds in ocean-exposed tropical beaches
The surf zones of sandy beaches are habitats in which morphodynamic characteristics (e.g., tide-modified versus wave-dominated beaches) influence the distribution of fish species. In addition, algal drift from adjacent coastal ecosystems (allochthonous material) is an important source of spatial heterogeneity within sandy beach habitats, providing refuge and food resources for fish species. We evaluated the influence of algal drift on the abundance, richness, and biomass of fish assemblages and feeding guilds (i.e. zooplanktivores, piscivores, opportunists and benthivores) on beaches with different exposures to wave conditions. For the entire fish fauna, abundance and species richness, but not biomass, differed between beach exposures. Similarly, abundance and biomass, but not richness of zooplanktivorous fish differed between tide-modified and wave-dominated beaches. In contrast, abundance, but not richness or biomass of benthivorous fish differed among categories of algal volume, while morphodynamic characteristics had no main or interactive effects. Finally, morphodynamic characteristics interacted with differences among categories of algal volume to affect species richness but not abundance or biomass of fish in the opportunist's guild. The size of individuals in the entire fish fauna and in the opportunists guild was affected by beach type and algae volume, whereas in the zooplanktivorous guild size was only affected by algal volume. The size of fish in the benthivorous guild was not affected by algal volume in tide-modified beaches. The responses of fish to morphodynamic conditions and algal drift were guild-specific, suggesting that different strategies may need to be implemented for the conservation or management of these trophic groups.
期刊介绍:
Estuarine, Coastal and Shelf Science is an international multidisciplinary journal devoted to the analysis of saline water phenomena ranging from the outer edge of the continental shelf to the upper limits of the tidal zone. The journal provides a unique forum, unifying the multidisciplinary approaches to the study of the oceanography of estuaries, coastal zones, and continental shelf seas. It features original research papers, review papers and short communications treating such disciplines as zoology, botany, geology, sedimentology, physical oceanography.