title: Towards multi-level biomonitoring of nematodes to assess risk of nitrogen and phosphorus pollution in Jinchuan Wetland of Northeast China.
abstract: Cultivation for agricultural production often poses threats to nearby wetlands ecosystems in fertile landscapes. In this study, nematode ecological indexes were assessed through the main soil properties of the wetlands, farmlands, and edges of wetlands and farmlands in Jinchuan Wetland by the random sampling. Behavior and reproduction in Caenorhabditis elegans (C. elegans) exposed to the sampled waters were also examined. Stress proteins Hsp70 and Hsp90 were measured both in the living field samples of C. elegans and the lab-tested C. elegans. Our results suggested that disturbance to wetland ecosystems by nitrogen and phosphorus reduced nematode richness and proportions of bacterivore nematodes. Bacterivore nematode diversity and plant-parasitic ecological index were proven to be sensitive indicators of the ecological health of wetlands. Nematode Hsp70 were useful biosensors to monitor and assess the levels of nitrogen and phosphorus pollutions in wetlands. Furthermore, multi-level soil faunal assessments by canonical correspondence analysis showed that Jinchuan Wetland is threatened with non-point source pollution from nearby farmlands.
authors.affiliation: Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China.|State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, 130117, China.
authors.forename: Yunbiao
authors.initials: Y
authors.lastname: Wang
authors.affiliation: College of Life Science, Langfang Teachers University, Langfang, 065000, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Qiao
authors.affiliation: State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, 130117, China. he-cg@nenu.edu.cn.
authors.forename: Chunguang
authors.initials: C
authors.lastname: He
authors.affiliation: State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, 130117, China.
authors.forename: Zhongqiang
authors.initials: Z
authors.lastname: Wang
authors.affiliation: State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, 130117, China.
authors.forename: Wenbo
authors.initials: W
authors.lastname: Luo
authors.affiliation: State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, 130117, China. shenglx@nenu.edu.cn.
authors.forename: Lianxi
authors.initials: L
authors.lastname: Sheng
mesh_terms: D000818:Animals; D017173:Caenorhabditis elegans / Q000187:drug effects / Q000235:genetics / Q000378:metabolism; D002681:China; D004784:Environmental Monitoring / Q000379:methods*; D018840:HSP70 Heat-Shock Proteins / Q000235:genetics / Q000378:metabolism; D018841:HSP90 Heat-Shock Proteins / Q000235:genetics / Q000378:metabolism; D008954:Models, Biological; D009348:Nematoda / Q000187:drug effects*; D009584:Nitrogen / Q000633:toxicity*; D010758:Phosphorus / Q000633:toxicity*; D018570:Risk Assessment; D012989:Soil Pollutants / Q000633:toxicity*; D053833:Wetlands
chemical_list: D018840:HSP70 Heat-Shock Proteins; D018841:HSP90 Heat-Shock Proteins; D012989:Soil Pollutants; D010758:Phosphorus; D009584:Nitrogen
keywords: Agricultural disturbance; Heat shock proteins; Indicator; Soil nematodes; Wetlands