Journal of Resources and Ecology ›› 2022, Vol. 13 ›› Issue (6): 1152-1164.DOI: 10.5814/j.issn.1674-764x.2022.06.019

• Animal Ecology • Previous Articles    

The Spatio-temporal Patterns of Macro Benthos Functional Groups and the Associated Factors Affecting Them after Wetland Restoration

WANG Maoqiu1(), HU Yang1, HE Ning1, WU Mingxuan1, WU Pengling1, WANG Qinyi1, ZHANG Bolun1, ZHANG Shengle1, GAO Meihua1, FANG Shubo1,2,*()   

  1. 1. College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China
    2. Research Center of Water Environment & Ecological Engineering, Shanghai Ocean University, Shanghai 201306, China
  • Received:2021-10-08 Accepted:2022-03-20 Online:2022-11-30 Published:2022-10-12
  • Contact: FANG Shubo
  • About author:WANG Maoqiu, E-mail: wangmaoqiu@yeah.net
  • Supported by:
    The National Key Research and Development Program of China(2017YFC0506002);The Foundation of Shanghai Marine Environmental Monitoring Center(MEMRT202003)

Abstract:

This study examines how the spatiotemporal patterns of functional groups of macro benthos responded to coastal wetland restoration projects. Compared with the traditional single-species approach, methods for identifying functional groups of macro benthos more comprehensively reflect the states of the wetland, i.e., spatiotemporal patterns and the related influencing factors. In this study, the macro benthos samples, soil samples, and plant samples were collected at each same sample site in April, July, and October of 2017 and January of 2018. After classification of the macro benthos functional groups according to some traits, the factors influencing the functional groups were examined by a linear stepwise regression. The results showed that all macro benthos were classified into 11 different functional groups based on their traits of forms of locomotion, feeding habits, and food gathering methods. The semi-mobile suspensivores (FDX), semi-mobile surface detritivores (SDX), and Jawed mobile carnivores (CMJ) were the main groups observed in a year. Regression analysis showed that particle size, moisture content, and plant height were important common factors influencing most groups. The main influencing factor of FDX was particle size (P=0.020). Moisture content (P=0.004), plant cover degree (P=0.008), and particle size (P=0.032) comprised the main restrictions of SDX in summer. Soil salinity (P=0.040) and plant height (P=0.011) were the factors influencing CMJ in autumn and winter. This study shows the changing characteristics of macro benthos functional groups to promote coastal wetland restoration and future biogeomorphological studies.

Key words: functional groups, macro benthos, spatiotemporal patterns, biogeomorphological index, wetlands restoration