水产学报2013，Vol.37Issue(6)：884-893,10.DOI:10.3724/SP.J.1231.2013.38429
枸杞岛铜藻空间分布格局初探
Spatial distribution pattern of Sargassum horneri around Gouqi Island, Shengsi, China
摘要
Abstract
This research surveys distribution and growing state of Sargassum horneri in different habitats by using underwater quadrat sampling method,and also studies the relationship,in both large and small scales (among sites and inside site),between the spatial distribution of S.horneri and influencing factors,thus provides references to protect and recover seaweed field.It has been found that among sites,many of S.horneri grow in sheltered bay,where plant distribution density and plant length are obviously higher than those in stations of wave exposure (P ＜ 0.05),while wave,water motion,and turbidity in sites of wave exposure are inversely more remarkable than those in sheltered sites (P ＜ 0.05),which suggests that water motion becomes a limiting factor on the horizontal distribution and growing of S.horneri.Within site,the vertical distribution of S.horneri has distinctive characteristics.Distribution density and plant length of S.horneri at the bottom of intertidal zone are obviously higher than those in subtidal zone(P ＜ 0.05).Study result also shows that,in small scale,the distribution density and plant length of S.horneri have some degree of correlation with the roughness,slope gradient and slope aspect of attachment substances.However,correlation analysis manifests that water depth has the highest correlation with the distribution density and plant length of S.horneri(r =-0.337,P =0.001),and roughness has the second highest correlation (r =0.175,P =0.092),while slope gradient and slope aspect merely have small correlation.So,it indicates that light condition maybe becomes the other limiting factor on the vertical distribution and growth of S.horneri.Study finally finds that physical characters of attachment substances are not the vital factors in affecting the distribution of S.horneri.We can infer that sediment is the key factor in affecting spatial distribution pattern of S.horneri,as a result of wave and water motion which cause resuspension of sediment to influence the light condition which S.horneri needs.关键词
铜藻/尺度/水深/暴波强度/光照Key words
Sargassum horneri/scale/water depth/wave exposure/irradiance分类
生物科学引用本文复制引用
章守宇,毕远新,吴祖立..枸杞岛铜藻空间分布格局初探[J].水产学报,2013,37(6):884-893,10.基金项目
国家自然科学基金项目(41176110) （41176110）
国家海洋公益性行业科研专项(201005013-3) （201005013-3）
国家"九七三"项目(2011CB111608) （2011CB111608）
