Changes in Mediterranean high mountain Trichoptera communities after a 20-year period

Sainz-Bariain Marta; Zamora-Munoz Carmen; Soler Juan J.; Bonada Nuria; Elisa Sainz-Cantero Carmen; Alba-Tercedor Javier

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Changes in Mediterranean high mountain Trichoptera communities after a 20-year period

机译：20年后地中海高山毛鳞翅目群落的变化

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Rivers in Mediterranean high mountains are especially vulnerable to climate change because these areas are characterized by extreme climatic conditions of snowy winters and relatively frequent summer droughts. Climate induced alterations in temperature and the magnitude of high and low river flows are expected to have significant effects on aquatic fauna. Here, we analysed changes in the caddisfly communities of the Sierra Nevada during a 20-year period on an altitudinal gradient range of 952-3050 m. Furthermore, we related these changes to an observed increase in air temperature and decrease in river flow over the last 40 years. Overall, caddisfly species richness increased but patterns varied depending on altitude in a non-linear shape. Richness increased in altitude with maximum values at sites of intermediate-high altitude (1800-2000 m). The effects of the observed climate change may be explained by the colonization of headwaters and middle reaches from mid-lowland species or by those from streams and rivers in nearby mountain chains at lower altitude. The observed richness increase and its association with environmental conditions suggest that mountains with a considerable altitudinal gradient may function as refuges for species and populations during periods of climatic change, which strength the importance of the conservation of mountainous habitat.

机译：地中海山区的河流特别容易受到气候变化的影响，因为这些地区的特征是下雪的冬天和夏季干旱相对频繁的极端气候条件。气候引起的温度变化以及河流高低流量的变化预计将对水生动物产生重大影响。在这里，我们分析了内华达山脉的线虫群落在20年内的海拔梯度范围为952-3050 m的变化。此外，我们将这些变化与过去40年来观测到的气温升高和河流流量减少相关。总体而言，蝇的物种丰富度有所增加，但其模式根据海拔高度呈非线性形状而变化。海拔高度的丰富度在中高海拔（1800-2000 m）处达到最大值。观测到的气候变化的影响可以用中低地物种的源头和中游定居，也可以用附近海拔较低的山脉中的溪流和河流定居。观测到的丰富度增加及其与环境条件的关系表明，海拔高度梯度较大的山脉可能在气候变化期间充当物种和种群的避难所，这加强了保护山区栖息地的重要性。

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来源
《Aquatic Sciences》 |2016年第4期|669-682|共14页
作者
Sainz-Bariain Marta; Zamora-Munoz Carmen; Soler Juan J.; Bonada Nuria; Elisa Sainz-Cantero Carmen; Alba-Tercedor Javier;
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作者单位

Univ Granada, Fac Ciencias, Dept Zool, Campus Fuentenueva, E-18071 Granada, Spain;

Univ Granada, Fac Ciencias, Dept Zool, Campus Fuentenueva, E-18071 Granada, Spain;

CSIC, Estn Expt Zonas Aridas, Ctra Sacramento S-N, La Canada De San Urbano 04120, Almeria, Spain;

Univ Barcelona, Fac Biol, Dept Ecol, Grp Recerca Freshwater Ecol & Management FEM, Diagonal 643, E-08028 Barcelona, Spain;

Univ Granada, Fac Ciencias, Dept Zool, Campus Fuentenueva, E-18071 Granada, Spain;

Univ Granada, Fac Ciencias, Dept Zool, Campus Fuentenueva, E-18071 Granada, Spain;

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收录信息美国《科学引文索引》(SCI);
原文格式 PDF
正文语种 eng
中图分类
关键词
Air temperature; Altitude; Water discharge; Species distribution; Aquatic ecosystems; South Iberian Peninsula; Climate change;

机译：气温;海拔;排水;物种分布;水生生态系统;伊比利亚南部半岛;气候变化;

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Changes in Mediterranean high mountain Trichoptera communities after a 20-year period

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