Nautilus Research Institute for Biological Conservation, Av. Senador Souza Naves, 655, cj 252, 80050-040, Curitiba, Brazil.
Mar Environ Res. 2011 Dec;72(5):235-47. doi: 10.1016/j.marenvres.2011.09.006. Epub 2011 Sep 28.
Habitat complexity strongly influences reef fish community composition. An understanding of the underlying reasons for this relationship is important for evaluating the suitability of artificial reef (AR) habitats as a marine resource management tool. We studied the influence of AR habitat structure on fish assemblage composition off the southern coast of Brazil. We found that reef blocks with greater area and number of holes possessed the greatest fish species richness and abundance. Reef blocks with greater complexity had higher abundance of almost 30% of fish species present. Natural reef (NR) and AR were different in their fish species composition, trophic structure and categories of water column occupancy by fish (spatial categories). Although NR was more diverse and harboured more trophic levels, AR presented the higher abundances and the presence of distinct fish species that underlined their importance at a regional scale. The greater availability of sheltering habitat where hard substrate is scarce, together with their frequent use by economically important species, make AR a useful tool for coastal management when certain ecological conditions are met.
生境复杂性强烈影响着珊瑚礁鱼类群落的组成。了解这种关系的潜在原因对于评估人工礁石（AR）生境作为海洋资源管理工具的适宜性非常重要。我们研究了巴西南部沿海人工礁石生境结构对鱼类组合组成的影响。我们发现，面积较大、孔数较多的礁石块拥有更多的鱼类物种丰富度和丰度。复杂性较高的礁石块拥有更高的鱼类物种丰度，几乎有 30%的鱼类物种存在。天然礁石（NR）和 AR 的鱼类物种组成、营养结构和鱼类在水柱中的占据类别（空间类别）不同。尽管 NR 更具多样性，拥有更多的营养层次，但 AR 表现出更高的丰度和存在独特的鱼类物种，这突显了它们在区域尺度上的重要性。在硬底质稀缺的情况下，庇护生境的可用性更大，再加上它们经常被经济重要物种使用，使得 AR 在满足某些生态条件时成为沿海管理的有用工具。
