...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Estuarine coastal and shelf science >A first qualitative and quantitative study of marine cave fish assemblages of intracave cavities
【24h】

A first qualitative and quantitative study of marine cave fish assemblages of intracave cavities

机译：A first qualitative and quantitative study of marine cave fish assemblages of intracave cavities

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

摘要

This study aims to describe for the first time the diversity and abundance of "cave within cave" fish species assemblage and to study the effects of habitat variables on these assemblage patterns. The term "cave within cave" is used to describe small, enclosed cavities and other enclosed spaces regularly present on the inner surface of large marine caves. The quantitative study was conducted from October to November 2019, in a large marine cave under Lucx2c7;ice Bay, on the south side of Brac x2c7; Island in the eastern Adriatic Sea. In total 48 one-square-meter surface squares were sampled, extending 40m inside from the cave entrance, and down to a depth of 26m. A total of 18 fish species were found in the studied cave, of which 15 were recorded on the square frames. Nine species were found in intracave cavities, including five species which occurred exclusively in this highly cryptic habitat. The three strictly "cave within cave" fish species (Corcyrogobius liechtensteini, Didogobius splechtnai and Zebrus zebrus) prevailed by abundance and by frequency of occurrence over other twelve species recorded on the squares. The total fish abundance significantly increased with increased light intensity, with steeper surface and from the bottom to the top of the cave, while the total biomass and species richness significantly increased only with the increased light intensity. The assemblage structure of "cave within cave" fishes differed significantly with light intensity, among different surface inclinations and among different cave positions. The "cave within cave" fish species differ in habitat preferences, some species inhabit the entrance of the cave with high light conditions and rich zoocover, and others inhabit further inside the cave with low light conditions.

著录项

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