首页 | 本学科首页   官方微博 | 高级检索  
   检索      


Nutrient recycling and shifts in N:P ratio by different zooplankton structures in a South Andes lake
Authors:Balseiro  Esteban G; Modenutti  Beatriz E; Queimalffinos  Claudia P
Institution:Centro Regional Universitario Bariloche Unidad Postal Universidad 8400 Bariloche Argentina
Abstract:In South Andes lakes, zooplankton succession is characterizedby a change in the dominance from the calanoid copepod Boeckellagracilipes in winter and spring, to the cladoceran Bosmina longirostrisin midsummer, and the rotifer Polyarthra vulgaris in late summer.We performed three series of field experiments at differenttimes (late spring, summer and late summer) to examine the roleof zooplankton constitution in the released nitrogen:phosphorus(N:P) ratio. We observed that changes in the zooplankton constitutionover the annual cycle may change the nutrient supply ratio.In South Andes lakes, Boeckella gracilipes would decrease theP limitation, lowering the N:P ratio, whereas Bosmina longirostristends to increase the N:P ratio and therefore increase the Plimitation during summer.
Keywords:
本文献已被 Oxford 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号