Effects of Elevated Atmospheric CO2 on Plant Detritus Nutritional Quality and Heterotrophic Utilization in Aquatic Ecosystems

[摘要]大气CO2浓度升高对水生生态系统植物碎屑营养质和异养利用的影响与陆地系统相比，大气CO2浓度升高对水生生态系统的影响相对被忽视。拟议的研究将检查在二氧化碳浓度升高的情况下生长的叶子对溪流微生物群落和选定的小动物和昆虫的影响。白杨树将在相同的条件下生长，除了其中一组将暴露在高浓度的二氧化碳中。研究这两组叶片在溪流中的微生物定植，以确定叶片质量如何影响凋落叶的利用和损失。这些处理过的垃圾将被喂给甲壳类动物和昆虫，以确定全球变化的潜在影响。

AbstractTuchman-9903888Effects Of Elevated Atmospheric CO2 On Plant Detritus Nutritional Quality And Heterotrophic Utilization In Aquatic EcosystemsThe influence of elevated atmospheric carbon dioxide levels on aquatic ecosystems is relatively ignored compared to research occurring in terrestrial systems. The proposed research will examine the influence of leaves grown under elevated carbon dioxide levels on stream microbial communities and selected small animals and insects. Aspen trees will be grown under identical conditions except one set will be exposed to elevated carbon dioxide. The microbial colonization of these two sets of leaves in streams will be studied to determine how leaf quality affects utilization and loss of leaf litter. This processed litter will then be fed to crustaceans and insects to determine a potential impact of global change.