Calcium concentration in leaf litter affects the abundance and survival of crustaceans in streams draining warm-temperate forests

Calcium concentration in leaf litter affects the abundance and survival of crustaceans in streams draining warm-temperate forests
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落叶层中的钙浓度影响排水暖温带森林的溪流中甲壳类动物的丰度和生存

DOI:
10.1111/fwb.12301
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发表时间:
2014
期刊:
影响因子:
2.7
通讯作者:
Ohta T. Niwa S. Hiura T.
Ohta T. Niwa S. Hiura T.
中科院分区:
生物学2区
文献类型:
--
作者:
Ohta,T.;Niwa;S.;Agetsuma;N.;Hiura;T.;Ohta T. Niwa S. Hiura T.

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河流生态系统从陆地生态系统接收大量养分,影响群落动态。然而,很少有研究调查辅助钙(动物的必需元素)对河流生态系统的影响。我们关注树种之间落叶层钙浓度的差异。特别是日本柳杉(Cryptomeria japonica)的凋落物的钙浓度比其他类群更高,日本许多地方都种植这种树。因此,我们预测 aC. 粳稻种植会影响溪流生态系统的辅助钙供应。我们比较了在雪松人工林、常绿阔叶林和砍伐区组成的流域的九个地点采样的落叶层、土壤、溪流水和溪流底栖无脊椎动物的钙浓度。此外,我们在9条溪流中的10个尼龙网箱中各放置了10只日本虾,一个月后调查了存活个体的数量。在以虾为主的地点,溪流水和土壤中的钙浓度以及优势甲壳类动物(日本虾)的密度和存活率显着较高。 粳稻与其他森林类型相比。此外,无脊椎动物群落组成与溪流水中的总钙和硝酸盐相关,表明陆地植被可以影响溪流无脊椎动物群落,特别是甲壳类动物。
Stream ecosystems receive large quantities of nutrients from terrestrial ecosystems that influence community dynamics. However, few studies have investigated the effects of subsidiary calcium, an essential element of animals, on stream ecosystems.We focused on differences in calcium concentrations of leaf litter between tree species. In particular, litter of Japanese cedar (Cryptomeria japonica) has a higher concentration of calcium than other taxa, and the tree is planted in many parts of Japan. Therefore, we predicted that aC. japonicaplantation would affect the supply of subsidiary calcium to stream ecosystems.We compared calcium concentration of leaf litters, soils, stream water and stream benthic invertebrates sampled at nine sites in catchments composed of cedar plantations, evergreen broad‐leaved forest and clear‐cut areas. In addition, we placed 10Gammarus nipponensisin each of 10 nylon cages in the nine streams and after one month surveyed the number of surviving individuals.Calcium concentration in stream water and soil, and the density and survival of the dominant crustacean (Gammarus nipponensis) were significantly higher at sites dominated byC. japonicacompared with other forest types. Furthermore, invertebrate community composition was correlated with total calcium and nitrate in stream water, indicating that terrestrial vegetation can affect stream invertebrate communities, particularly crustaceans.
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