• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Effects of El Nino and La Nina on Seabird Assemblages in the Equatorial Pacific.
【24h】

Effects of El Nino and La Nina on Seabird Assemblages in the Equatorial Pacific.

机译：厄尔尼诺和拉尼娜对赤道太平洋海鸟群落的影响。

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Spring and autumn cruises in Equatorial and Subtropical Surface waters were conducted 1984-1989 in the eastern equatorial Pacific. Three genera predominated, but the relative contribution of each to species assemblages differed markedly depending on season and water mass. During autumn, on the basis of biomass, Pterodroma dominated assemblages in both water masses; on the basis of abundance, Pterodroma shared dominance with Oceanodroma but only in Equatorial Surface Water. During spring, in either water mass, no one genus could be considered dominant. Assemblage composition varied from year to year, but changed the most during El Nino 1986-87 and La Nina 1988. The impact of either event was manifested by a decrease or disappearance of genera and species that were normally of medium-abundance. Generally, the common genera and species were not affected. For El Nino, assemblages changed more during autumn compared to spring. The effect of La Nina was strongest during spring.

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