...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Wilson Bulletin >SEASONAL ABUNDANCE OF MIGRANT BIRDS AND FOOD RESOURCES IN PANAMANIAN MANGROVE FORESTS
【24h】

SEASONAL ABUNDANCE OF MIGRANT BIRDS AND FOOD RESOURCES IN PANAMANIAN MANGROVE FORESTS

机译：巴拿马山红树林森林候鸟的季节性丰富度和食物资源

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

We studied temporal variation in abundance of Nearctic-Neotropical migrants, particularly the Northern Waterthrush (Seiurus noveboracensis), Prothonotary Warbler (Protonotaria citrea), and American Redstart (Setophaga ruticilla) in two black mangrove sites of central Panama from September 1993 through May 1995. The two sites, on the Caribbean and the Pacific coasts, differ importantly in annual rainfall, tide amplitude, and seasonal invertebrate abundance. Most migrant species varied temporally in abundance with the opposite pattern at each site, suggesting mid-winter movements correlated with abundance of food resources. Because of their wide geographic distribution and their particular response to hydrographic factors, mangroves are likely to have a temporally complementary role in sustaining migrant populations throughout the Neotropics. However, variations in migrant numbers reported in other Neotropical habitats could also reflect large-scale movements by migrants. Occurrence of mid-winter (facultative) migration has been documented mostly for the Palearctic-African migratory system, and needs to be investigated in the Nearctic-Neotropical realm for proper conservation of migratory species.
机译：我们研究了1993年9月至1995年5月在巴拿马中部的两个黑树林中，近北向新移民的数量变化，特别是北部水variation（Seiurus noveboracensis），原声莺（Protonotaria citrea）和美洲红start（Setophaga ruticilla）的时空变化。加勒比海和太平洋沿岸的这两个地点在年降水量，潮汐振幅和季节性无脊椎动物的丰度方面有重要的不同。大多数迁徙物种在每个地点的时空变化都以相反的方式变化，这表明冬季中期的运动与粮食资源的数量相关。由于其广泛的地理分布和对水文因素的特殊反应，红树林可能在维持整个新热带地区的移民人口方面具有暂时的互补作用。但是，其他新热带地区栖息地报告的移民人数变化也可能反映了移民的大规模迁徙。记录了冬季（过渡性）迁徙的发生主要发生在古北非移民体系中，需要在近北-新热带地区进行研究以适当地保护迁徙物种。

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