The Dynamics of Chironomidae (Insecta: Diptera) Assemblages in Response to Environmental Change during the past 700 years on Svalbard
The Dynamics of Chironomidae (Insecta: Diptera) Assemblages in Response to Environmental Change during the past 700 years on Svalbard
复制标题
斯瓦尔巴特群岛过去 700 年来摇蚊科（昆虫纲：双翅目）组合对环境变化的动态响应
DOI：
10.1023/b:jopl.0000022547.98465.d3
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发表时间：
2004
影响因子：
2.1
通讯作者：
H. Birks
中科院分区：
文献类型：
--
作者：
S. Brooks;H. Birks
研究了斯瓦尔巴特群岛近期自然和人为环境变化对摇蚊动物群的影响。现代摇蚊动物区系进行了研究，从斯瓦尔巴群岛西部的23个湖泊的表面沉积物样品。共发现18个分类群，其中3个以前没有记录在斯瓦尔巴群岛。采用对应分析和多元回归分析方法，研究了水化学和物理变量对现代摇蚊组合分布和丰度的影响。摇蚊组合分为四组，这主要是由pH值，营养浓度，水温和水深的影响。从三个湖泊的沉积物芯调查在过去的700年摇蚊组合的变化。在其中两个地点，有证据表明大约200年前发生的区域气候变化的反应，可能与“小冰”有关。第三个地点是对当地集水区变化的反应，最初可能是由于70年前在湖边建立了一个人类定居点，后来是由于1988年放弃了这个定居点。
The impact of recent natural and human-induced environmental change on chironomid faunas on Svalbard has been investigated. The modern chironomid fauna was studied from surface-sediment samples collected from 23 lakes in western Svalbard. A total of 18 taxa was found, of which three had not been recorded previously from Svalbard. The influence of water chemistry and physical variables on the distribution and abundance of the modern chironomid assemblages was investigated using correspondence analysis and multiple regression. The chironomid assemblages fall into four groups, which are primarily influenced by pH, nutrient concentrations, water temperature, and water depth. Sediment cores were taken from three lakes to investigate changes in chironomid assemblages over the last 700 years. At two of the sites there is evidence for a response to regional climatic change occurring about 200 years ago and may have been associated with the ‘Little Ice Age’. At the third site there is a response to local catchment changes, probably brought about, initially, by the establishment of a human settlement close to the lake 70 years ago, and subsequently, as a result of the abandonment of this settlement in 1988.