Departamento de Biología, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, Avda. de la Universidad, Campus de Excelencia Internacional del Mar (CEIMAR), 11510, Puerto Real, Cádiz, Spain.
Departamento de Biología, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, Avda. de la Universidad, Campus de Excelencia Internacional del Mar (CEIMAR), 11510, Puerto Real, Cádiz, Spain; Dpto. de Ciencias Agroforestales, Escuela Técnica Superior de Ingeniería, Campus de la Rábida, Universidad de Huelva, 21819, Palos de la Frontera, Huelva, Spain.
Mar Environ Res. 2018 Feb;133:85-98. doi: 10.1016/j.marenvres.2017.12.005. Epub 2017 Dec 7.
Beaches are dynamic transitional environments subject to numerous natural and anthropic alterations. In these ecosystems, the infralittoral-sublittoral macrofauna communities play a key role in the food web. The objective of this study was to compare macrofauna communities on six beaches on the Gulf of Cádiz coast, which were classified according to the anthropic alterations they support, and evaluate the influence of abiotic factors on the species distribution. Sampling was done in the infralittoral-sublittoral zone of each beach using a modified manual dredge. Five perpendicular transects of 25 m, each separated by 10 m, were performed per beach, with a total sample area of 43.75 m per beach. A total of 27 species were found, of which Donax trunculus, Diogenes pugilator, and Tritia grana were the most abundant. Anthropogenic effects are appreciable in the infralittoral-sublittoral although they are areas that are permanently submerged and less exposed than the intertidal. Beach nourishments carried out with large volumes of sand can alter the grain size, the most influential parameter on the distribution of the species, and consequently, affect the macrofauna community that inhabits these beaches.
海滩是动态的过渡环境，受到众多自然和人为因素的影响。在这些生态系统中，潮间带-浅海底层大型动物群落在食物网中起着关键作用。本研究的目的是比较加的斯湾海岸六处海滩的底层-浅海底层大型动物群落，这些海滩根据其支持的人为改变进行分类，并评估非生物因素对物种分布的影响。使用改良的手动挖泥机在每个海滩的潮间带-浅海底层进行采样。每个海滩进行五个垂直的 25 米长的横断面，每个横断面之间相隔 10 米，每个海滩的总采样面积为 43.75 平方米。共发现 27 种，其中红螺、扁卷螺和多板蛤蜊最为丰富。尽管潮间带-浅海底层是永久性淹没且比潮间带暴露程度低的区域，但人为影响是明显的。大量沙子进行的海滩填海工程会改变粒径，这是影响物种分布的最具影响力的参数，因此会影响栖息在这些海滩上的大型动物群落。
