湖泊科学2012，Vol.24Issue(5)：705-711,7.
水深梯度对苦草(Vallisneria natans)克隆生长与觅食行为的影响
Clonal growth and foraging behavior of a submerged macrophyte Vallisneria natans in response to water depth gradient
摘要
Abstract
To investigate clonal growth and foraging behavior of a submerged macrophyte Vallisneria natans, biomass, ramet number , bud number, total stolon length , shoot height and maximum root length responses of V. natans ramets were investigated experimentally at five water depths (1.0,2.5,4.0,5.5 and 7.0m). The study showed biomass, ramet number, bud number, total stolon length and maximum root length all decreased significantly with increasing water depths. The shoot height exhibited a unimodal pattern along with increasing water depths, with the maximum value at the water depth of 2. 5 m. The plant biomass significantly affected all the growth traits except for the bud number. Furthermore, ramet number and total stolon length were significantly affected by the interactive effect between water depth and plant biomass, suggesting that the effects of water depth on ramet number and total stolon length were depended on plant development.关键词
水深/沉水植物/苦草/克隆繁殖/觅食行为Key words
Water depth/ submerged macrophyte/ Vallisneria natans/ clonal growth/ foraging behavior引用本文复制引用
符辉,袁桂香,曹特,倪乐意,张霄林..水深梯度对苦草(Vallisneria natans)克隆生长与觅食行为的影响[J].湖泊科学,2012,24(5):705-711,7.基金项目
国家水体污染控制与治理科技重大专项项目(2012ZX07105004,2008ZX07106-2)资助. （2012ZX07105004,2008ZX07106-2）
