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Priority wetland invertebrates as conservation surrogates.

S J Ormerod1, Isabelle Durance, Aurelie Terrier

  • 1Catchment Research Group, School of Biosciences, Cardiff University, Cardiff CF103AX, United Kingdom. ormerod@cardiff.ac.uk

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PubMed
Summary
This summary is machine-generated.

Priority freshwater invertebrates, like specific UK gastropods, do not better indicate biodiversity than non-priority species. However, conserving them expands protected wetland types and biodiversity niches.

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Area of Science:

  • Ecology
  • Conservation Biology
  • Invertebrate Zoology

Background:

  • Invertebrates are crucial ecosystem components but rarely used as biodiversity indicators.
  • Priority species are candidates for indicating biological diversity, but their effectiveness is debated.

Purpose of the Study:

  • To assess if three U.K. Biodiversity Action Plan freshwater invertebrates indicate richness, composition, and conservation importance of associated wetland organisms.
  • To evaluate their role as surrogates for alpha diversity, beta diversity, and threat status.

Main Methods:

  • Examined sites occupied by three priority gastropod species (Segmentina nitida, Anisus vorticulus, Valvata macrostoma).
  • Assessed species richness, community composition (beta diversity), and conservation status of associated mollusks and macrophytes.
  • Quantified changes in wetland types and niche-space under conservation management.

Main Results:

  • Sites with priority gastropods showed higher gastropod species richness and conservation importance.
  • These species characterized assemblages linked to significant variations in alpha and beta diversity.
  • Conserving these species increased managed wetland types by 18% and gastropod niche-space by 33%.

Conclusions:

  • Priority invertebrates are not superior indicators of alpha/beta diversity or conservation importance compared to non-priority species.
  • Conserving priority species effectively broadens the range of protected wetland environments and their specialized biodiversity.
  • A strategy involving multiple species with contrasting habitat needs is recommended for conservation surrogates.