Utilization by fishes of shallow, seagrass-covered banks in Florida Bay: 1. Species composition and spatial heterogeneity
Utilization by fishes of shallow, seagrass-covered banks in Florida Bay: 1. Species composition and spatial heterogeneity
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佛罗里达湾海草覆盖的浅滩鱼类的利用： 1. 物种组成和空间异质性
DOI：
10.1007/bf00001610
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发表时间：
2004
影响因子：
1.4
通讯作者：
J. Holmquist
中科院分区：
文献类型：
--
作者：
S. Sogard;G. Powell;J. Holmquist
概要：使用小网目刺网评估了佛罗里达湾浅水（<1 m）海草覆盖的泥滩上水柱鱼类的物种组成和相对捕获率。动物区系主要是温带，很少有热带代表，并在邻近流域的鱼类群落相似。整个海湾的渔获量变化很大，反映了物理环境和海草冠层各个方面的异质性。海湾网站，在海湾的西北部，有最高的物种丰富度和最高的捕获率的个别物种，相对于其他网站。更高密度的潜在猎物，更大的可用觅食区，和有机丰富的，精细的沉积物可能是影响更大的鱼类利用这一银行。更大的交流西部佛罗里达湾与开放的大西洋或海湾沃茨提出作为一个次要因素影响物种丰富度的非居民物种偶尔出现在西部银行的概率大于孤立的海湾内部部分。
SynopsisSpecies composition and relative capture rates of water column fishes occurring on the shallow (<1 m), seagrass-covered mudbanks of Florida Bay were assessed using small-mesh gillnets. The fauna was largely temperate, with few tropical representatives, and was similar to the fish community in adjacent basins. There was a high variability in the catch across the Bay, reflecting heterogeneity in both the physical environment and various aspects of the seagrass canopy. The Gulf site, in the northwestern section of the Bay, had the highest species richness and highest capture rates of individual species, relative to other sites. Higher densities of potential prey, greater available foraging area, and organically rich, fine sediments are probably influential in the greater fish utilization of this bank. The greater exchange of western Florida Bay with open Atlantic or Gulf waters is proposed as a secondary factor influencing species richness; the probability of non-resident species occasionally appearing on western banks is greater than in isolated interior sections of the Bay.