A century of change in North Sea plankton communities explored through integrating historical datasets
A century of change in North Sea plankton communities explored through integrating historical datasets
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DOI：
10.1093/icesjms/fsy148
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发表时间：
2018-10
期刊：
影响因子：
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通讯作者：
J. Bedford;D. Johns;A. McQuatters‐Gollop
中科院分区：
文献类型：
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作者：
J. Bedford;D. Johns;A. McQuatters‐Gollop
患者;浮游生物群落是有用的生态系统指标，从历史角度研究浮游生物群落组成有助于了解大尺度的环境变化。我们对北海浮游生物群落长期时间尺度变化的了解，大部分是由连续浮游生物记录仪（CPR）调查提供的，该调查自1931年开始运作，自1958年以来提供了一致的时间序列数据。本文通过将CPR数据集与ICES从1902年到1912年进行的浮游生物调查的数字化收集相结合，进一步增加了我们对北海群落变化的理解的时间尺度。在采取措施整合两个完全不同的数据集之后，不同时期整体群落组成的差异表明，通过CPR调查期间观察到的多年代际变化可能是从已经处于变化轨迹上的非稳定基线开始的。因此，评估浮游生物群落受人类压力影响的一个稳定的历史时期可能很难确定北海的情况，而是需要在选择的任何基线范围内包含潜在的变化。利用扩展数据集发现了海面温度大尺度变化驱动浮游生物群落组成变化的进一步证据。
&NA; Plankton communities make useful ecosystem indicators, and taking a historical perspective on plankton community composition provides insights into large‐scale environmental change. Much of our understanding of long temporal‐scale change in plankton communities in the North Sea has been provided by the Continuous Plankton Recorder (CPR) survey, operating since 1931, with consistent time‐series data available since 1958. This article further increases the temporal scale of our understanding of community change in the North Sea by combining the CPR dataset with a digitized collection of plankton surveys undertaken by ICES from 1902 to 1912. After steps taken to integrate the two disparate datasets, differences in overall community composition between time periods suggest that the multidecadal changes observed through the CPR survey time period may have occurred from a non‐stable baseline that was already on a trajectory of change. Therefore, a stable historical time period in which plankton communities are assessed against for any impact of human pressures may be hard to define for the North Sea and instead underlying variation needs to be encompassed within any baseline chosen. Further evidence for the influence of large‐scale changes in sea surface temperature driving change in plankton community composition was found using the extended dataset.