应用生态学报2017，Vol.28Issue(5)：1498-1506,9.DOI:10.13287/j.1001-9332.201705.035
鳗草在荣成天鹅湖不同生境中生长的适应性
Growth adaptability of Zostera marina at different habitats of the Swan Lake in Rongcheng,China
摘要
Abstract
Eelgrass (Zostera marina),a seagrass species widely distributed in the coastal regions of northern hemisphere,has suffered with a great decline due to a variety of anthropogenic and environmental stresses.In order to examine the adaptability of eelgrass to different environmental stresses,studies on the morphology and reproductive capacity of eelgrass had been carried out monthly from November 2014 to October 2015 at four different habitats of the Swan Lake,including patch area in intertidal area and subtidal area,eelgrass meadow edge,and eelgrass meadow area.The results showed significant spatio-temporal variations in the morphological parameters and branch frequency of eelgrass shoots at different habitats of the Swan Lake.The highest values of leaf length,leaf width,aboveground/belowground biomass,and internode length/diameter were observed in the meadow area,i.e.,78.54 cm,7.93 mm,7.03 and 3.88,respectively,while the highest branch frequency was observed in the meadow edge (88.4％).The plasticity index for aboveground/belowground biomass was higher (ranging from 0.77 to 0.92) at the four habitats,but those for the leaf width was slightly lower (ranging from 0.41 to 0.64).The number of spathes in each shoot showed no significant difference at different habitats,whereas the number of spathes per unit area was significantly different.Clonal reproduction was more dominant in meadow area than in the patch area where human disturbance was high.关键词
鳗草/形态适应性/形态学参数/生殖策略Key words
Zostera marina/morphology adaptability/morphological parameter/reproductive strategy引用本文复制引用
郭美玉,李文涛,杨晓龙,张秀梅,刘建影,李常军..鳗草在荣成天鹅湖不同生境中生长的适应性[J].应用生态学报,2017,28(5):1498-1506,9.基金项目
本文由海洋公益性行业科研专项经费项目(201405010)资助 This work was supported by the National Marine Public Welfare Research Project (201405010). （201405010）
