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Environmental DNA Monitoring: Better Tracking of Endangered, Rare, Cryptic, and Invasive Species

Figure 1: California funding and support for eDNA monitoring will sustain an analytical program that can inform management and conservation decisions. Improved primary data on the distribution of these important classifications of species will have positive impacts on biodiversity and development within the state. (Ota et. al. 2020)
Journal of Science Policy & Governance | Volume 17, Issue 01 | September 30, 2020

Policy Memo: ​Environmental DNA Monitoring: Better Tracking of Endangered, Rare, Cryptic, and Invasive Species

William M. Ota (1,2), Caitlyn Hall (3,4) , John Malloy (3,5) , Morgan A. Clark (6)
  1. University of California Riverside, Evolution, Ecology, and Organismal Biology Department, Riverside, CA
  2. University of California Riverside, Center for Science to Policy, Riverside, CA
  3. Arizona State University, Arizona Science Policy Network, Tempe, AZ
  4. Arizona State University, Sustainable Engineering and the Built Environment, Tempe, AZ
  5. Arizona State University, School of Earth and Space Exploration, Tempe, AZ
  6. Colton High School, Science Department, Colton, CA
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https://doi.org/10.38126/JSPG170117
Keywords: biodiversity; conservation; California; endangered species; invasive species

Executive Summary: As the global number of endangered, rare, and invasive species continues to increase, legally mandated efforts to monitor species’ ranges and abundances have grown exponentially. Human population growth is affecting an increasing number of species that need to be monitored, resulting in difficulties providing necessary data on the abundances, ranges, and movement of these species (Kelly 2014). We currently lack practical monitoring techniques for remote, hard-to-access habitats and species with low population counts, which makes it difficult to make informed management decisions (Kelly et al. 2014). Biologists use a variety of comprehensive field- and labor-based monitoring techniques including mark-recapture studies, depletion surveys, and tracking surveys. Environmental DNA (eDNA) is the genetic material shed by every organism into its surrounding environment, which can then be collected from air, soil, or water and analyzed to assess the composition of species present at a site (Thomsen and Willerslev 2015). eDNA monitoring is a tool that does not require the same man-hours that other techniques require. This allows eDNA to be deployed for biomonitoring, natural resource management, and decision making in ways traditional techniques cannot (Biggs et al. 2015; Kelly et al. 2014). Past use of eDNA in programs, including CaleDNA and the Aquatic eDNA atlas project, demonstrated that eDNA is currently a viable monitoring tool for endangered, rare, cryptic, and invasive species. In 2020, the United States Department of the Interior’s National Invasive Species Council Work Plan recognized the potential of eDNA and prioritized its exploration for the first time (United States Department of the Interior, 2020). We believe developing permanent funding sources or amending AB 2470 to include funds for natural resource managers to implement eDNA monitoring programs and information databases is necessary to continue to support societal growth and biodiversity in California. An eDNA monitoring program will allow natural resource managers to better inform land development, conservation, and environmental management decision-making in California.

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William Ota (he/him) is the current Government Relations Chair and former Executive Chair of the UC Riverside Center for Science to Policy (S2P).  As a PhD student in the department of Evolution, Ecology, and Organismal Biology at UC Riverside he studies how the effects of wastewater discharge are altering the lives of native species in urban rivers. This research will help us protect native species and ecosystems and preserve them for future generations. In order for his research to have broad impacts he collaborates with local water districts, conservation districts, and United States Geological Surveys. In his free time William enjoys SCUBA, houseplant propagation, and building terrariums. Email: [email protected]
 
Caitlyn Hall (she/her/they/them) is a founding member of the Arizona Science Policy Network and a PhD student in Environmental Engineering at Arizona State University. Her current research promotes climate change and natural hazard resilience in communities using microbes to reduce damage from earthquake-induced liquefaction. She works with industry, community, and government leaders to develop best-fit technical, policy, and public health solutions to best-address a community’s challenges and values. Her other research has focused on soil and water remediation, and sustainable use of resources for urban and greenhouse crop production and agriculture. For fun, Caitlyn spends her time rock climbing and trail running.
 
John F. Malloy (he/him) is a PhD candidate studying Astrobiology and Complex Systems Science at Arizona State University. He studies the fundamental nature and definition of life, both on Earth and on other planets, through exploring the evolution of life and life-like systems. He is working to predict future evolutionary steps and create a universal definition of evolution. He is also a member of the Arizona Science Policy Network, where he works to advance science-based policy measures in Arizona. He enjoys training for and competing in ultramarathons across the American Southwest.
 
Morgan Clark (she/her) is a Biology Teacher at Colton High School. As an educator she aims to equip her students with science communication skills so that they may advocate for the preservation of ecosystems in their communities. Before she accepted her current role, she was a Laboratory Manager and Research Assistant at Pepperdine University where she published work on the effects of climate change on California newts. In her free time, she enjoys collecting field guides and creating digital art.
 
Acknowledgements
The authors would like to acknowledge the guidance and support of Kevan Yamahara from the Monterey Bay Aquarium Research Institute, Doug Brown from the UC Riverside Center for Science to Policy, and Susan Hackwood from the UC Riverside Center for Science to Policy.


DISCLAIMER: The findings and conclusions published herein are solely attributed to the author and not necessarily endorsed or adopted by the Journal of Science Policy and Governance. Articles are distributed in compliance with copyright and trademark agreements.

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