广西红树林上大型固着污损动物的种类组成及分布

Species Composition and Distribution of Fouling Macrofauna Which are Attached to Mangroves of Guangxi

关键词:  红树林  污损动物  固着生物

Key words:  mangroves  attaching fouling macrofauna  species and distribution

摘要:

野外定性调查结果表明,广西沿海红树林区有11种红树林上固着动物,它们分属3门4纲6属,其中藤壶、牡蛎和黑荞麦蛤为主要危害种类。开阔海岸红树林较封闭港湾红树林更易遭受固着动物危害。固着动物对红树植物的附着具有选择性,附着机率是桐花树 > 秋茄 > 红海榄 > 白骨壤。就红树群落而言,固着动物的种类由海缘到陆缘,由树的低层处到高层处而减少。最后,讨论了固着动物和一些生态因子的关系。

Abstract:

The field qualititative investigations reveal that there are 11 species,belonging to 6 genera in 4 classes and 3 orders,of marine fouling macrofauna which are attached to mangroves along Guangxi coastal zone,of which Balanus,Ostrea and Viynaduld atrata are the major.It is elucidated that open coastal mangroves are easlier damaged by fouling animals than sheltered mangroves,and the probability of mangrove species to be attached by fouling macrofauna is Aegiceras corniculatum > Kandelia candel > Rhizophora stylosa > Avicennia marina.For a mangrove community,the number of fouling macrofauna species decreases from seaward to landward,and from low tree level to high tree level,finally,the relanship between fouling maerofauna and some ecological factors is discussed.