Diverging life cycle patterns of two Diamesa species (Diptera, Chironomidae) in High Arctic streams, Svalbard

Schuetz Stefan Andreas; Brittain John E.; Fuereder Leopold

首页> 外文期刊>Polar Biology >Diverging life cycle patterns of two Diamesa species (Diptera, Chironomidae) in High Arctic streams, Svalbard

【24h】

Diverging life cycle patterns of two Diamesa species (Diptera, Chironomidae) in High Arctic streams, Svalbard

机译：Diverging life cycle patterns of two Diamesa species (Diptera, Chironomidae) in High Arctic streams, Svalbard

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

The fauna of streams in the High Arctic, dominated by chironomids, is shaped by extreme environmental conditions that represent the physiological limits for benthic invertebrates. Despite their ecological importance, little is known of chironomid life histories, development strategies and the key abiotic drivers limiting larval growth in High Arctic streams. We investigated the larval development and growth in three High Arctic rivers with contrasting water sources, thermal regimes and nutrient characteristics. Populations of the larvae of Diamesa bohemani (Goetghebuer 1932) and Diamesa aberrata (Lundbeck 1898) from two sampling occasions in July and August 2016 were morphometrically analysed to determine life history patterns and instream productivity. Water temperature differences lead to diverging development patterns on local spatial scales. The lowest larval growth was in a groundwater/snowmelt fed stream with low food concentration and quality, suggesting that stream productivity is not primarily water source dependant, but is dependent on the nutrient supply. Glacially influenced streams are clearly more productive than previously assumed, resulting in comparable secondary production to groundwater/snowmelt-fed streams.

著录项

来源
《Polar Biology》 |2022年第2期|285-296|共12页
作者
Schuetz Stefan Andreas; Brittain John E.; Fuereder Leopold;
展开▼
作者单位

Leopold Franzens Univ Innsbruck, Inst Ecol, River & Conservat Res, Technikerstr 25, A-6020 Innsbruck, Austria|Bur Nat Schutz Gewasser & Fischereifragen GmbH, Zugspitzstr 17, D-82396 Pahl, Germany;

Univ Oslo, Nat Hist Museum, POB 1172, N-0318 Oslo, Norway|Norwegian Water Resources & Energy Directorate, POB 5091, N-0318 Oslo, Norway;

Leopold Franzens Univ Innsbruck, Inst Ecol, River & Conservat Res, Technikerstr 25, A-6020 Innsbruck, Austria;

展开▼
收录信息
原文格式 PDF
正文语种英语
中图分类
关键词
Glacial streams; Biometric analyses; Emergence; Nutrient supply; Climate change;

Diverging life cycle patterns of two Diamesa species (Diptera, Chironomidae) in High Arctic streams, Svalbard

摘要

著录项

相关主题

期刊订阅