Effects of Interplantations with Prunus salicina and Citrus grandis in Naval Orange Orchards on Spider Communities
[Objective] The aim was to study the effects of interpellations with other fruits in naval orange orchards on the species composition and diversity of spider communities in navel orange ecosystems. [ Method] Samples were taken from navel orange canopies and grounds in three planting models of navel orange, such as interplantation with Prunus salicina Lindl. , interplantation with Citrus grandis Osbeckin and monoplantation in the Gannan regions between December 2010 and December 2011. [ Result] The species richness (S) , number of individuals (N) and absolute abundance (n) of spiders from the navel orange orchard interplanted with P. salicina were significantly higher than those from the monoplanting navel orange orchard. Moreover, the numbers of individuals of ffylyphantes graminicola, a common spider species, for both canopy and ground samples, and the number of individuals of Clubiona dektrix for canopy samples from the navel orange orchard interplanted with P. salicina were significantly higher than those from the monoplanting navel orange orchard. However, there were not significant influences of interplantation with C. grandis in navel orange orchard on the species composition and diversity of spider communities from both navel orange canopies and grounds. Seasonal dynamics of spider species richness and number of individuals were apparent for the three planting models. Czekanowski similarity indices suggested that these communities were much highly similar to each other. For the mono-or inter-planting navel orange orchard, the total numbers of spiders from navel orange canopies were positively associated with the total numbers of spiders from the grounds. [Conclusion] The reasonable interplanting was beneficial to protect and utilize the spiders of naval orange orchards.
Navel orangeInterplantationPrunus salicina Lindl,Citrus grandis OsbeckSpider community