When are environmental DNA early detections of invasive species actionable?
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- More information: Publisher Index Page (via DOI)
- Data Release: USGS data release - Predicted consequences of detecting Najas minor environmental DNA in Sebago Lake Maine, 2022
- Open Access Version: Publisher Index Page
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Abstract
Environmental DNA (eDNA) sampling provides sensitive early detection capabilities for recently introduced taxa. However, natural resource managers struggle with how to integrate eDNA results into an early detection rapid response program because positive eDNA detections are not always indicative of an eventual infestation. We used a structured decision making (SDM) framework to evaluate appropriate response actions to hypothetical eDNA early detections of an introduced aquatic plant in Sebago Lake (Maine, USA). The results were juxtaposed to a recent study that used a similar SDM approach to evaluate response actions to hypothetical eDNA early detections of introduced mussels in Jordanelle Reservoir (Utah, USA). We found that eDNA early detections were not actionable in Sebago Lake because the plant's invasion potential was spatially constrained and the current management activities provided acceptable levels of mitigation. In Jordanelle Reservoir, eDNA detections were actionable due to high invasion potential and analyses supported management actions to contain the invasion. The divergent outcomes of the two case studies are related to the unique attributes of the habitats and species, highlighting the utility of the SDM approach when considering an eDNA monitoring program. We use these two case studies to present a general SDM framework and a set of heuristics that can be efficiently applied to eDNA early detection rapid response scenarios and other instances associated with indeterminant eDNA detections, especially when there is an imperative to make decisions as quickly as possible.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | When are environmental DNA early detections of invasive species actionable? |
| Series title | Journal of Environmental Management |
| DOI | 10.1016/j.jenvman.2023.118216 |
| Volume | 343 |
| Year Published | 2023 |
| Language | English |
| Publisher | Elsevier |
| Contributing office(s) | Leetown Science Center, Northern Rocky Mountain Science Center, Upper Midwest Environmental Sciences Center, Wetland and Aquatic Research Center, Eastern Ecological Science Center |
| Description | 118216, 11 p. |
| Country | United States |
| State | Maine |
| Other Geospatial | Sebago Lake |
| Google Analytic Metrics | Metrics page |