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Systematic conservation planning for groundwater ecosystems using phylogenetic diversity.

Maria G Asmyhr1, Simon Linke2, Grant Hose1

  • 1Department of Biological Sciences, Macquarie University, Sydney, New South Wales, Australia.

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Aquatic ecosystems are vital for clean drinking water. This study uses molecular data to assess unseen groundwater fauna, aiding conservation planning for these vulnerable habitats.

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Area of Science:

  • Ecology
  • Conservation Biology
  • Molecular Biology

Background:

  • Aquifer ecosystems provide essential services like clean drinking water.
  • Groundwater fauna (stygofauna) are diverse but poorly understood, hindering conservation efforts.
  • Anthropogenic pressures threaten these unique, often endemic, species.

Purpose of the Study:

  • To develop a method for incorporating stygofauna diversity into conservation planning.
  • To use molecular data and phylogenetic diversity as surrogates for stygofauna diversity.
  • To apply these methods within the Marxan systematic conservation planning software.

Main Methods:

  • Utilized molecular sequence data (18S rDNA and COI) from stygofauna.
  • Calculated phylogenetic diversity, using branch lengths as surrogates for distinct evolutionary characters.
  • Integrated phylogenetic data as conservation features into Marxan software.

Main Results:

  • Phylogenetic diversity effectively represented stygofauna diversity for conservation planning.
  • Marxan identified sites with deep phylogenetic branches as most irreplaceable.
  • The choice of molecular marker influenced the resulting conservation prioritization.

Conclusions:

  • Molecular data and phylogenetic diversity offer a viable method for conserving undescribed groundwater fauna.
  • Systematic conservation planning can be enhanced by integrating phylogenetic information.
  • This approach improves the inclusion of cryptic and taxonomically unknown species in conservation strategies.