• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Polar biology >Haul-out behaviour of Arctic ringed seals (Pusa hispida): inter-annual patterns and impacts of current environmental change
【24h】

Haul-out behaviour of Arctic ringed seals (Pusa hispida): inter-annual patterns and impacts of current environmental change

机译：北极环斑海豹（Pusa hispida）的拖运行为：年际格局和当前环境变化的影响

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

Hauling out onto a solid substrate is an integral part of most pinnipeds' activity budgets. Ringed seals (Pusa hispida) are an Arctic species that hauls out on sea ice routinely throughout the year. In 2006, a sudden change in the sea-ice regime occurred in Svalbard (Norway). Amongst other changes, the amount of land-fast ice declined sharply. This study examined the intra- and inter-annual haul-out behaviour of 60 ringed seals equipped with Satellite Relay Data Loggers before [2002-2003 (n = 22)] and after [2010-2012 (n = 38)] the sea-ice decline occurred. In total, ringed seals hauled out 5-20% of the time (between August and May) with a mean haul-out duration of 3.3 h. The mean interval between haul-out events was 36 h, with a seasonal pattern that peaked in October (max 81 days). Haul-out probability was influenced by wind speed, temperature and solar hour to varying extents seasonally. After the sea-ice decline, intervals between haul-out events were significantly longer, and from December to March seals had shorter haul-out durations and hauled out a smaller proportion of the time. Haul-out probabilities in the winter and spring were more heavily influenced by weather conditions in 2010-2012 compared to 2002-2003, especially on the west coast where sea-ice declines have been greatest. These changes are likely due to ringed seals hauling out less often in snow lairs due to inadequate snow and ice conditions. Ringed seal haul-out behaviour will likely continue to be impacted negatively by ongoing environmental change, with concomitant impacts on their activity/energy budget and polar bears' hunting behaviour.
机译：拖到坚固的基材上是大多数钳制者活动预算的组成部分。环斑海豹（Pusa hispida）是一类北极物种，全年常在海冰上拖运。 2006年，斯瓦尔巴特群岛（挪威）的海冰状况突然发生了变化。除其他变化外，耐陆冰量急剧下降。这项研究调查了[2002-2003年（n = 22）]和[2010-2012年（n = 38）]之前60枚装有卫星中继数据记录器的环形海豹的年内和年度拖运行为。发生冰块下降。总体而言，环形海豹的出海时间为5-20％（8月至5月之间），平均出海持续时间为3.3小时。牵引事件之间的平均间隔为36小时，其季节性模式在10月达到顶峰（最多81天）。拖拉概率受风速，温度和太阳时数的季节性影响程度不同。海冰下降之后，两次拉出之间的间隔时间明显延长，从12月到3月，海豹的拉出持续时间较短，并且拉出的时间比例较小。与2002-2003年相比，2010-2012年冬季和春季的拖运概率受天气状况的影响更大，特别是在海冰下降幅度最大的西海岸。这些变化可能是由于雪和冰块条件不足导致环型海豹在雪巢中拖运的频率降低。环海豹捕捞行为可能会继续受到环境变化的不利影响，并对其活动/能源预算和北极熊的狩猎行为产生相应的影响。

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