• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine ecology >Year‐to‐year variability of epifaunal assemblages on a mobile hard substrate-Case study from high latitudes
【24h】

Year‐to‐year variability of epifaunal assemblages on a mobile hard substrate-Case study from high latitudes

机译：移动硬质基质上表生真菌组合的逐年变化-高纬度案例研究

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

Past polar regional studies on temporal trends of benthic systems have mostly been performed on soft bottom communities. Fewer studies have dealt with hard bottom, and none have been performed with mobile hard substrates, yet these are common, abundant and host high biodiversity-usually higher than similar substrates even if the latter were larger in size. In this study, we analysed the variability of epifaunal assemblages on a mobile hard substrate (Buccinum sp. and Littorina sp. shells utilized by hermit crab Pagurus pubescens) collected annually during 5 years (2005-2009) in Spitsbergen Island (Svalbard Archipelago, 78 degrees N) and Northern Norway (68 degrees N). The epifaunal assemblages were variable over the observed period, with differences in abundance, diversity (S, H ') and assemblage structure. Among the species that contributed the most to the observed differences were barnacle Semibalanus balanoides, serpulid polychaetes (Circeis armoricana, Spirobranchus triqueter) and foraminiferans (Discorbis rosacea, Lobatula lobatula), which dominate the assemblages. Analyses indicated that epifauna found on hermit crab shells is mostly influenced by environmental effects linked to NAO, its seasonal values (esp. winter), sometimes lagged. Strong changes were coinciding with a NAO phase shift. Years with positive NAO tend do have higher number of species, abundance and diversity. Differences between Spitsbergen and Northern Norway are most likely driven by geographic setting of the sites and its implications (e.g., hydrography). By exploring the sensitivity to large-scale climate variability and its direct consequences, the study helps assess the potential of environment monitoring through hermit crabs epifauna. It provides also a baseline data allowing comparative, or after disturbance, studies in future.
机译：过去极地区域底栖系统时间趋势的研究主要在软底群落上进行。很少有研究涉及硬底，并且没有针对可移动的硬质底物进行过研究，但是这些都是常见的，丰富的并且具有较高的生物多样性-通常比相似的底物更大，即使后者的尺寸更大。在这项研究中，我们分析了在5年（2005-2009年）期间每年在斯匹次卑尔根岛（斯瓦尔巴群岛，78 N度）和挪威北部（68度N）。表生动物的组合在观察期间是可变的，在丰度，多样性（S，H'）和组合结构上存在差异。对观察到的差异影响最大的物种是藤壶Semibalanus balanoides，serpulid polychaetes（Circeis armicalana，Spirobranchus triqueter）和有孔虫（Discorbis rosacea，Lobatula lobatula）占主导地位。分析表明，寄居蟹壳上的浮游动物主要受到与NAO有关的环境影响的影响，NAO的季节性值（尤其是冬季）有时会滞后。重大变化与NAO相移同时发生。 NAO趋于阳性的年份确实具有更高的物种数量，丰富度和多样性。斯匹次卑尔根州和挪威北部之间的差异很可能是由这些地点的地理位置及其影响（例如水文学）引起的。通过探索对大规模气候变化的敏感性及其直接后果，该研究有助于评估通过寄居蟹表生动物进行环境监测的潜力。它还提供了基线数据，允许将来进行比较研究或在干扰之后进行研究。

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