闽江口梅花港潮间带蟹类动物群落生态的研究

本文报道闽江口梅花港潮间带蟹类的种类和群落结构,结果表明梅花港潮间带有蟹类14种,隶属于3科9属,沙滩种类贫乏,多样性指数小,且平均密度和生物量也小,冬、春季沙滩蟹类完全消失,夏、秋季韦氏毛带蟹为优势种,泥滩蟹类夏、秋季密度高,而冬、春季生物量大,冬季多样性指数低,泥滩蟹类的物种构成和数量在一年中变化较大.沙泥滩蟹类夏、秋季密度高,而冬季生物量大,春,夏季多样性指数低而优势度高。沙滩和泥滩、沙泥滩的群落相似性很低,而泥滩和沙泥滩的相似性较高。

Community Ecology of Crabs on Intertidal Zone in Meihua Harbour of Minjiang Estuary

Species of crabs and their community structure on intertidal zone in Meihua Harbour of Minjiang estuary have been studied. 14 species crabs are identified, which belong to 3 families and 9 genvre, On the sandy bottom, there are small average density and biomass with a lower diversity index. There has been no distribution of crabs found in spring and winter, and Dotilla wichmanni is domminant species in summer and autumn. On the muddy bottom, the density of animals is higher in summer and autumn than in spring and winter, while the biomass is larger in spring and winter than in other seasons. There is a lowest diversity index in winter time. On the sand-muddy bottom, the quantity of animals is the largest in summer and autumn, while the biomass is the largest in winter. Uca(Deltuca)lactea lactea is dominant species. The diversity index of animals is very low in spring and summer with a high dominance. The similarity between sandy bottom and muddy, sand-muddy bottom is very low, while that between muddy and sand-muddy bottom is higher.