%0 Journal Article
%T Diatom community succession and nutrient evolution recorded from a sediment core of the Longgan Lake, a large shallow lake in east China<br>龙感湖沉积物泥芯硅藻群落和营养状态的反演
%A DONG Xu-Hui
%A YANG Xiang-Dong
%A <br>DONG
%A Xu-Hui
%A and
%A YANG
%A Xiang-Dong
%J 水生生物学报
%D 2006
%I 
%X The Longgan Lake is a shallow mesotrophic macrophytedominated lake. According to the high-resolution diatom research from its sediment core, the diatom community succession was built, and the total phosphorus (TP) and chlorophyll-a (Chl-a) concentration were quantitatively reconstructed for the past 2000 years, based on the diatom-TP and diatom-Chla transfer functions.The shifts of diatom assemblages also mirrored the developments of aquatic plant, reflecting the characters of aquatic ecosystem evolution. The inferred epilimnetic TP concentration fluctuated within a small range of 36 to 62μg/L, indicating the lake remained a relative stable mesotrophic status in the long historical period. The periodical variations of the diatom assemblage and trophic status suggest a mitigating function of shallow macrophyte-dominated lakes to nutrient input. The changes of lakes' trophic status don't linearly respond to the human disturbance in the catchment. The dynamics mechanism of phosphorus in macrophyte-dominated lakes, as inferred from diatoms, will provide a scientific foundation for the prediction of trophic status change in a shallow lake, as well as the lake ecological restoration and management decisions.
%K Diatom assemblage
%K Nutrient
%K Quantitative reconstruction
%K Aquatic macrophyte
%K Longgan Lake<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=256651267D5D2E4520A7707D05E98747&aid=5AC234FE4192CBED&yid=37904DC365DD7266&vid=59906B3B2830C2C5&iid=B31275AF3241DB2D&sid=CA4FD0336C81A37A&eid=2868AE484E7BAD6B&journal_id=1000-3207&journal_name=水生生物学报&referenced_num=0&reference_num=34