Morais R A, Ferreira C E L, Floeter S R
Programa de Pós-Graduação em Ecologia, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil.
Marine Macroecology and Biogeography Lab, Departamento de Ecologia e Zoologia, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil.
J Fish Biol. 2017 Dec;91(6):1642-1667. doi: 10.1111/jfb.13482. Epub 2017 Oct 27.
A large fish-count dataset from the Brazilian province was used to describe spatial patterns in standing biomass and test if total biomass, taxonomic and functional trophic structure vary across nested spatial scales. Taxonomic and functional structure varied more among localities and sites than among regions. Total biomass was generally higher at oceanic islands and remote or protected localities along the coast. Lower level carnivores comprised a large part of the biomass at almost all localities (mean of 44%), zooplanktivores never attained more than 14% and omnivores were more representative of subtropical reefs and oceanic islands (up to 66% of total biomass). Small and large herbivores and detritivores varied greatly in their contribution to total biomass, with no clear geographical patterns. Macrocarnivores comprised less than 12% of the biomass anywhere, except for two remote localities. Top predators, such as sharks and very large groupers, were rare and restricted to a few reefs, suggesting that their ecological function might have already been lost in many Brazilian reefs.
来自巴西省份的一个大型鱼类计数数据集被用于描述现存生物量的空间格局，并检验总生物量、分类和功能营养结构在嵌套空间尺度上是否存在差异。分类和功能结构在不同地点和场所之间的差异大于在不同区域之间的差异。总生物量通常在海洋岛屿以及沿海偏远或受保护的地点较高。几乎在所有地点，低级食肉动物占生物量的很大一部分（平均为44%），浮游动物食性动物从未超过14%，杂食动物在亚热带珊瑚礁和海洋岛屿中更具代表性（占总生物量的66%）。小型和大型食草动物以及碎屑食性动物对总生物量的贡献差异很大，没有明显的地理模式。除了两个偏远地点外，大型食肉动物在任何地方的生物量都不到12%。顶级捕食者，如鲨鱼和非常大的石斑鱼，很罕见，且仅限于少数珊瑚礁，这表明它们的生态功能可能在许多巴西珊瑚礁中已经丧失。
