Effects of Rare and Common Species of Macrobenthos on Species Abundance Distribution Pattern and Species Diversity in the Mangroves of Yanpu Bay
Rare species,which are not abundant but rich in species composition,are easily lost in local communities under human disturbance.In this study,the macrobenthos in the mangrove of Yanpu Bay were taken as the research object,and the rare species were identified by combining geographical range,habitat specificity and population size.The loss of rare species was simulated to explore the effect of the loss of rare species on the species diversity and species abundance distribution pattern of the community.The results showed that there were 16 rare species of macrobenthos,including Littoraria ardouiniana,Nephtys polybranchia and Nassarius succinctus.The loss of rare species significantly decreased the Margalef richness index(P＜0.05).At the same time,after the loss of rare species,the optimal fitting model of species abundance distribution also changed from poisson lognormal model to niche model.It is preliminarily inferred that the loss of rare species will affect the species abundance distribution pattern of the community,and the community construction of macrobenthos is changed from the co-regulation of neutral process and niche process to the regulation of neu-tral process.
mangrovemacrobenthosrare speciesspecies diversityspecies abundance distribution pattern
万方数据
维普
