Soil macro-fauna respond to environmental variations along a coastal-inland gradient

PeerJ

article

Xiaoxue Zheng¹  Yan Tao¹  Zhongqiang Wang¹  Chen Ma³  Hong He¹  Xiuqin Yin¹ 

[1] Key Laboratory of Geographical Processes and Ecological Security in Changbai Mountains, Ministry of Education, School of Geographical Sciences, Northeast Normal University, Changchun, Jilin Province;Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Changchun, Jilin Province;School of Public Administration and Law, Northeast Agricultural University, Harbin, Heilongjiang Province;School of Natural Resources, University of Missouri

关键词: Soil macro-fauna;    Community characteristics;    Coastal ecosystems;    Coastal-inland gradient;    Bohai Bay;   

DOI  :  10.7717/peerj.9532

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Varied environmental conditions in coastal-inland zones tend to influence soil faunal communities. However, few studies have focused on the responses of soil fauna to environmental variations along the coastal-inland gradient. In order to better understand the aforementioned responses, a total of 80 soil macro-faunal samples were collected at the five different distances from the coastline of China’s Bohai Bay. The results revealed that the compositions, structural characteristics and diversity of the soil macro-fauna varied among the different habitats. With the increases in the distance from the sea, the individual density, richness and diversity levels of the soil macro-fauna all first increased and then decreased. The individual density, richness and diversity values were all at their maximum at 30 km from the sea. The Edge effect promoted unique and rare soil macro-faunal taxa. Formicidae, Curculionidae and Aphodiidae were found to be the edge taxa. Agelenidae, Liocranidae and Nematocera were considered to be indicator taxa of severe sea effects. Paradoxosomatidae was an indicator taxon of slight effects. Overall, the environmental variations along the coastal-inland gradient were found to have the potential to affect the soil macro-faunal communities, and the different taxa of the soil macro-fauna responded to those variations in different ways. This study further revealed the processes and mechanisms of the sea influencing the soil macro-faunal communities, which had been caused by the coastal-inland gradient. The results of this study also provided a theoretical basis for developing future biodiversity guidelines for coastal ecosystems.

【 授权许可】

CC BY