...
  • 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 >Ontogenetic Patterns Of Concentration Indicate Lagoon Nurseries Are Essential To Common Grunts Stocks In A Puerto Rican Bay
【24h】

Ontogenetic Patterns Of Concentration Indicate Lagoon Nurseries Are Essential To Common Grunts Stocks In A Puerto Rican Bay

机译：浓度的本体发育模式表明泻湖苗圃对波多黎各湾的普通Gr鱼种群至关重要

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

Estimates of abundance and size of three commercially exploited grunt species indicate ontogenetic changes in habitat utilization concentrate their juveniles within the lagoon of the Bay of La Parguera, Puerto Rico. Eleven biotopes, defined by four benthic structures (reef, mangrove, vegetation beds and unconsolidated sediments) and three geographic zones (inner lagoon, outer lagoon and bank shelf) were sampled randomly by visual surveys. French, bluestriped and white grunt (Haemulon flavolineatum, Haemulon sciurus and Haemulon plumeri) were common in the bay and appeared to exhibit similar life history patterns of cross-shelf migration and habitat selection. Recently settled grunts were dispersed over vegetated and unconsolidated soft-bottom sediments of the bay. The juvenile stage occurred in highest densities in shallow lagoon biotopes among the submerged prop-roots of mangrove stands and on inshore reefs. Length data indicates that grunts migrate offshore to adult habitat via increasingly deep reefs. Indices of biotope nursery function based on standing stock estimates of juveniles identified three biotopes, all within the inner lagoon as essential habitat for juveniles of 5-10 cm length interval. This concentration of juveniles within biotopes of the lagoon could represent a bottleneck to recruitment for grunt stocks. Evidence that quantity and quality of lagoon nurseries may limit recruitment indicates that these areas represent a key component of a marine protected area designed to restore fisheries within the bay.
机译：对三种商业开发的gr类物种的丰度和大小的估计表明，栖息地利用的个体发育变化使它们的幼体集中在波多黎各拉帕古拉湾泻湖内。通过视觉调查，随机采样了由四个底栖结构（礁，红树林，植被层和未固结的沉积物）和三个地理区域（内泻湖，外泻湖和河岸架子）定义的11个生物群落。法国，蓝条纹和白色gr（Haemulon flavolineatum，Haemulon sciurus和Haemulon plumeri）在海湾中很常见，并且似乎表现出相似的跨架迁移和生境选择的生活史模式。最近定居的咕gr声散布在海湾的植被和松散的软底沉积物上。在淹没的红树林支柱和近海礁石之间的浅泻湖生物群落中，幼年阶段的密度最高。长度数据表明，gr鱼通过越来越深的珊瑚礁向近海迁移到成年栖息地。根据对未成年人的种群估计，生物群落托儿所功能的指标确定了三个生物群落，它们全部位于内部泻湖内，是5-10厘米长的幼体的基本栖息地。泻湖生物群落中的这种未成年人集中可能代表了招募种群种群的瓶颈。泻湖苗圃的数量和质量可能限制招聘的证据表明，这些地区代表了旨在恢复海湾内渔业的海洋保护区的关键组成部分。

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