The Chironomidae of Gróthúsvatn, Sandoy, Faroe Islands: climatic and lake-phosphorus reconstructions, and the impact of human settlement
The Chironomidae of Gróthúsvatn, Sandoy, Faroe Islands: climatic and lake-phosphorus reconstructions, and the impact of human settlement
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DOI：
10.1177/0959683607085133
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发表时间：
2007-12
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影响因子：
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通讯作者：
F. Gathorne-Hardy;I. Lawson;M. Church;S. J. Brooks;P. Buckland;K. Edwards
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作者：
F. Gathorne-Hardy;I. Lawson;M. Church;S. J. Brooks;P. Buckland;K. Edwards
摇蚊作为法罗群岛Sandoy的Gróthúsvatn的多代理古湖泊学研究的一部分进行了研究。在岩芯顶部1米处共发现37个类群。摇蚊推断的总磷和温度重建表明，landnám（挪威殖民时期）后，总磷水平略有上升，然后在温度最低时达到峰值（解释为“小冰”）。随后，沉积物表面的总磷水平下降到仅略高于沉降前的水平。在发现landnám之后，几乎没有迹象表明集水区的侵蚀加剧，人类定居对Gróthúsvatn及其集水区的影响可能很小。因此，我们认为，温度下降导致了湖泊生产力的增加。
Chironomids were examined as part of a multiproxy palaeolimnological study of Gróthúsvatn, Sandoy, Faroe Islands. A total of 37 taxa was found in the top 1 m of the core. Chironomid-inferred total phosphorus and temperature reconstructions indicate that after landnám (the Norse settlement period) total phosphorus levels rose slightly, then peaked at a temperature minimum (interpreted as the `Little Ice Age'). Total phosphorus levels subsequently fell to only slightly above pre-settlement levels at the sediment surface. Little indication of increased erosion in the catchment after landnám was found, and it is likely that the impacts of human settlement on Gróthúsvatn and its catchment were slight. We therefore propose that the temperature decrease caused the increase in the lake's productivity.