Scholarlink

<p>Soil nematodes play crucial roles in maintaining ecosystem stability and facilitating material cycling and energy flow. However, owing to the special characteristics of wetland ecosystems, comparatively few studies have been devoted to the feedback mechanisms of soil nematode community structures under divergent wetlands conditions. In this study, the Beidagang wetland, Baodi paddy field, and Dahuangpu wetland of Tianjin, China were chosen as representatives of coastal, constructed, and swampy wetlands, respectively. Metagenomic sequencing technology and bioinformatic analysis were applied to evaluate the effect of wetland types on the soil nematodes. We found that bacterivorous nematodes represented the largest proportion among the three types of wetlands, followed by omnivorous predators. The overall trend in the life history strategy of nematodes was consistent among the three wetland types (coloniser-persister1 &gt; coloniser-persister3 &gt; coloniser-persister4 &gt; coloniser-persister2) and ecological indices differed significantly between the artificial and natural wetlands, the channel index and nematode channel ratio suggesting that the soil food web entered into bacterial decomposition channels. Salinity and the ratio of nitrogen to carbon were positively correlated with the abundance of <i>Diploscapter</i>, <i>Caenorhabditis</i>, and <i>Pristionchus</i> genera and adversely correlated between bacterivorous and colonizer-persister1 nematodes, while cadmium was significantly adversely correlated with plant parasites, colonizer-persister2 nematodes and plant parasite index. Non-metric multidimensional scaling indicated that salinity, ammonium nitrogen, and nitrate nitrogen were the dominant factors affecting the distribution of nematode communities. This research may provide a scientific foundation for the sustainable management and health of wetland ecosystems.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The Influence of Wetland Type on Soil Nematodes

  • 期刊论文

  • 发表日期：

    2025年7月30日

查看全文
  • Mengqiong Feng,
  • Xuefeng Hu,
  • Fanhui Liu,
  • Jing Huang,
  • Xinyan Sun,
  • Jing Li,
  • Meiqing Jia,
  • Guogang Zhang,
  • Yidong Wang

摘要

Soil nematodes play crucial roles in maintaining ecosystem stability and facilitating material cycling and energy flow. However, owing to the special characteristics of wetland ecosystems, comparatively few studies have been devoted to the feedback mechanisms of soil nematode community structures under divergent wetlands conditions. In this study, the Beidagang wetland, Baodi paddy field, and Dahuangpu wetland of Tianjin, China were chosen as representatives of coastal, constructed, and swampy wetlands, respectively. Metagenomic sequencing technology and bioinformatic analysis were applied to evaluate the effect of wetland types on the soil nematodes. We found that bacterivorous nematodes represented the largest proportion among the three types of wetlands, followed by omnivorous predators. The overall trend in the life history strategy of nematodes was consistent among the three wetland types (coloniser-persister1 > coloniser-persister3 > coloniser-persister4 > coloniser-persister2) and ecological indices differed significantly between the artificial and natural wetlands, the channel index and nematode channel ratio suggesting that the soil food web entered into bacterial decomposition channels. Salinity and the ratio of nitrogen to carbon were positively correlated with the abundance of Diploscapter, Caenorhabditis, and Pristionchus genera and adversely correlated between bacterivorous and colonizer-persister1 nematodes, while cadmium was significantly adversely correlated with plant parasites, colonizer-persister2 nematodes and plant parasite index. Non-metric multidimensional scaling indicated that salinity, ammonium nitrogen, and nitrate nitrogen were the dominant factors affecting the distribution of nematode communities. This research may provide a scientific foundation for the sustainable management and health of wetland ecosystems.