BIOGENIC HABITAT STRUCTURE AND CHARACTERISTICS OF TEMPERATE REEF FISH ASSEMBLAGES
BIOGENIC HABITAT STRUCTURE AND CHARACTERISTICS OF TEMPERATE REEF FISH ASSEMBLAGES
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DOI：
10.1111/j.1442-9993.1990.tb01473.x
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发表时间：
1990-12-01
期刊：
影响因子：
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通讯作者：
AMBROSE, RF
中科院分区：
文献类型：
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作者：
HOLBROOK, SJ;SCHMITT, RJ;AMBROSE, RF
在美国南加州的一系列珊瑚礁上，对非隐蔽的、以基质为导向的鱼类物种进行了比较。珊瑚礁按藻类覆盖情况分组：大型海藻（Macrocystis pyrifera）密集层，下层为草皮;大型海藻稀疏层，下层为叶状海藻;叶状海藻高度小于1米;以及开阔的荒地。尽管许多个别物种的亲和力，特别是藻类基板，我们没有发现鱼类物种丰富度的差异，只有弱的不同栖息地类型的珊瑚礁之间的物种组成的差异。浮游生物和消耗大型无脊椎动物的物种不太可能出现在支持巨型海带的珊瑚礁上;其他三个营养类群（食鱼动物，食草动物和微型食肉动物）的出现频率不受巨型海带的影响。南加州珊瑚礁上的藻类组成在时间上高度动态。珊瑚礁的大型藻类组成的变化影响了两种鱼类（黑鲈鱼和条纹鲈鱼）的种群动态。总体而言，弱的空间变化，在南加州的珊瑚礁上的鱼组合似乎是由于相对非专业化的生态要求，许多物种结合珊瑚礁上的藻类结构的时间变化是快速相对于世代的鱼。我们假设，在组合的基板相关的鱼类物种的空间分化程度可能是负相关的时间常数的生物礁结构。
Assemblages of non‐cryptic, substrate‐oriented species of fish were compared on a series of reefs in Southern California, USA. Reefs were grouped according to algal cover: dense beds of giant kelp (Macrocystis pyrifera) with turf understorey; sparse beds of giant kelp with foliose algae understorey: foliose algae < 1 m in height; and open barrens. Despite affinities to particular algal substrates by many individual species, we detected no differences in fish species richness and only weak differences in species composition among reefs of different habitat types. Planktivores and species that consume macro‐invertebrates were less likely to occur on reefs that supported giant kelp; the frequencies of occurrence of three other trophic groups (piscivores, herbivores and micro‐carnivores) were unaffected by giant kelp.Algal composition on reefs in Southern California is temporally highly dynamic. Changes in macro‐algal composition of reefs influenced population dynamics of two fish species (black surfperch and striped surfperch) examined. Overall, the weak spatial variation in fish assemblages on reefs in Southern California appears to result from relatively unspecialized ecological requirements of many species combined with temporal changes in algal structure on reefs that are rapid relative to generation times of the fish. We hypothesize that the degree of spatial differentiation in assemblages of substrate‐associated species of fish may be inversely related to the temporal constancy of biogenic reef structure.