Estimating Aquatic Species Density From Environmental DNA

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Environmental DNA – or eDNA - analytical methods are effective for estimating site occupancy and species distribution of aquatic organisms.

The next frontier of eDNA applications is to estimate species abundance and density. Building upon previous studies correlating eDNA concentration and associated animal density, researchers developed a modeling approach that uses eDNA and associated animal density data from a subset of sites to estimate animal density at other sites where only eDNA data are available. Authors note areas where the model could be further developed to yield more accurate estimates. This approach represents one of the first steps to advance the difficult, but important topic of inferring animal density from eDNA data.

Chambert, T., Pilliod, D.S., Goldberg, C.S., Doi, H., Takahara, T., 2018, An analytical framework for estimating aquatic species density from environmental DNA: Ecology and Evolution, https://doi.org/10.1002/ece3.3764.

 

 

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Date published: November 27, 2017
Status: Active

Wildlife Ecology and Conservation Biology Team (FRESC)

Wildlife respond to changes in their environment, some of which are dramatic and others subtle. To fully understand the factors that drive changes in populations and communities, we need better information on wildlife ecology in natural and human-altered landscapes. We conduct research and provide technical assistance to address applied questions about the ecology and conservation of wildlife...

Contacts: David S Pilliod