...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine ecology >The Sponge Community in a Semi-Submerged Temperate Sea Cave: Density, Diversity and Richness
【24h】

The Sponge Community in a Semi-Submerged Temperate Sea Cave: Density, Diversity and Richness

机译：半浸入温带海洞中的海绵群落：密度，多样性和丰富性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The sponge communities inhabiting a temperate semi-submerged sea cave were investigated at Lough Hyne Marine Nature Reserve, Co. Cork, Ireland. Thirty-one species of sponge were reported, the majority of which exhibited either an encrusting or massive morphology. Sponge density (averaged over depth) increased with horizontal distance (5 m intervals) into the cave until approximately 30 m, corresponding to the maximum algal intrusion (algal information from Norton et al, 1971). Species diversity and richness (averaged over depth) were highest at 10 m horizontal distance from the cave entrance. Variability in sponge density, diversity and richness was observed with increasing vertical depth (0.5 m intervals) at most horizontal intervals sampled (5 m apart). These three variables increased initially with depth, but then decreased towards the seabed. Bray-Curtis Similarity Analysis and Multi-Dimensional Scaling (MDS) showed cave sponge community composition to have greater similarity (50 %) with local loose rock habitats than the nearby cliffs. Similar processes structuring cave and loose rock sponge communities may account for this situation. Information collected from this and previous studies on the biotic (algal communities, other fauna and competition) and abiotic factors (water flow rate, depth, aerial exposure, light, cave morphology, nutrient depletion and humidity) affecting this and other caves is discussed with respect to its influence on the sponges inhabiting different parts of the cave. Although horizontal zonation patterns have been considered analogous to vertical distribution patterns for algal communities (due to similar decreases in light), this was not the case for the studied sponge communities.
机译：在爱尔兰科克的Lough Hyne海洋自然保护区调查了居住在温带半淹没海洞中的海绵群落。据报道有三十一种海绵，其中大多数表现出结壳状或块状形态。海绵密度（在整个深度上的平均值）随着进入洞穴的水平距离（间隔为5 m）而增加，直到大约30 m，这对应于最大的藻类入侵（Norton等人，1971年的藻类信息）。在距洞穴入口10 m的水平距离处，物种多样性和丰富度（在整个深度上平均）最高。在大多数水平采样间隔（间隔5 m）中，随着垂直深度（间隔0.5 m）的增加，观察到海绵密度，多样性和丰富度的变化。这三个变量最初随着深度增加而增加，然后向海底减小。 Bray-Curtis相似性分析和多维标度（MDS）显示，洞穴海绵群落组成与当地的松散岩石栖息地的相似度（50％）比附近的悬崖更大。构造洞穴和疏松岩石海绵群落的类似过程可能会导致这种情况。讨论了从本次研究和以前的研究中收集的有关影响该洞穴和其他洞穴的生物（藻类群落，其他动物群和竞争）和非生物因素（水流量，深度，空气暴露，光照，洞穴形态，养分消耗和湿度）的信息。考虑到它对居住在洞穴不同部分的海绵的影响。尽管对于藻类群落，水平分区模式被认为与垂直分布模式相似（由于光照的相似减少），但对于所研究的海绵群落却并非如此。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号