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<p>Metallic trace element (MTE) contamination can profoundly disrupt ecosystems by altering soil chemistry, reducing biodiversity, and impairing nutrient cycling. Mosses, due to their high sensitivity to atmospheric deposition, serve as effective bioindicators of such pollution. Understanding how MTEs influence moss communities is essential for monitoring environmental health and informing remediation efforts. However, MTEs’ impact on some biological communities, such as moss invertebrate communities, is not well studied. The aim of this study is to characterize the invertebrate biodiversity in the moss species <i>Pulvigera lyellii</i>, across multiple sites in South Seattle, specifically comparing diversity of high-pollution sites in the Duwamish River Valley (urban sites) to nearby parks and green spaces (park sites). Results from a principal component analysis of inductively coupled plasma mass spectrometry data revealed that urban sites had significantly higher MTE index values and greater MTE variation than park sites. Macrofaunal abundance and species diversity were significantly higher in park sites compared to urban sites. Microfaunal responses were taxon-specific, with tardigrades showing no sensitivity to MTE contamination, while rotifers and nematodes exhibited weak but contrasting correlations with MTE contamination. These results underscore the need for further research with larger sample sizes and greater taxonomic precision to better understand the impacts of MTE pollution on urban ecosystems.</p>

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Ecological impacts of metallic trace element pollution on moss-dwelling invertebrate communities

  • 期刊论文

  • 发表日期：

    2025年9月30日

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  • Gabriel L Veltri,
  • Olivia Roberts,
  • Kristin M Hultgren

摘要

Metallic trace element (MTE) contamination can profoundly disrupt ecosystems by altering soil chemistry, reducing biodiversity, and impairing nutrient cycling. Mosses, due to their high sensitivity to atmospheric deposition, serve as effective bioindicators of such pollution. Understanding how MTEs influence moss communities is essential for monitoring environmental health and informing remediation efforts. However, MTEs’ impact on some biological communities, such as moss invertebrate communities, is not well studied. The aim of this study is to characterize the invertebrate biodiversity in the moss species Pulvigera lyellii, across multiple sites in South Seattle, specifically comparing diversity of high-pollution sites in the Duwamish River Valley (urban sites) to nearby parks and green spaces (park sites). Results from a principal component analysis of inductively coupled plasma mass spectrometry data revealed that urban sites had significantly higher MTE index values and greater MTE variation than park sites. Macrofaunal abundance and species diversity were significantly higher in park sites compared to urban sites. Microfaunal responses were taxon-specific, with tardigrades showing no sensitivity to MTE contamination, while rotifers and nematodes exhibited weak but contrasting correlations with MTE contamination. These results underscore the need for further research with larger sample sizes and greater taxonomic precision to better understand the impacts of MTE pollution on urban ecosystems.