摘要
对深圳福田红树林区珠带拟蟹守螺的种群生态进行了逐月调查研究,结果表明:珠带拟蟹守螺的种群总体格局是聚集分布的,这是种群的内禀属性。运用模糊聚类分析方法可将其在不同月份的聚集强度分为4种类型。空间格局的聚集强度变化与成螺的繁殖、幼螺的出现及生长过程中的迁移有关。种群的死亡过程和繁殖过程使种群平均密度有较明显的波动,但对种群总体水平无明显影响,种群结构也无明显变化。
This paper deals with the population ecology of Cerithidea cingulata (GMELIN) based on the fieled investigation data taken monthly during Feb. 1987 to Dec. 1987. The overall spatial pattern of C. cingulata is over-dispersed, which is an intrinsic attribute of the population. The spatial patterns in different months were divided into four types by fuzzy grouping method, which represent different aggregate degrees of the spatial distribution and are expressed in months as: Ⅰ. (November to May); Ⅱ.(June to July), Ⅲ.(August), and Ⅳ.(September to October). The changes of aggregate degrees of spatial patterns are related to the reproductive habitat of adults and the migration of the larvae in the course of growth. The death and reproduction of the population make the mean density fluctuate but do not obviously change the overall level of population number and the population structure.
出处
《中山大学学报论丛》
1992年第3期85-92,共8页
Supplement to the Journal of Sun Yatsen University
关键词
红树林区
珠带拟蟹守螺
种群空间格局
数量动态
种群结构
mangrove area
Cerithidea cingulata
spatial pattern
numerical dynamics
population structure
