Gregg Schumer
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View article: A molecular specimen bank for contemporary and future study captures landscape-scale biodiversity baselines before Klamath River dam removal
A molecular specimen bank for contemporary and future study captures landscape-scale biodiversity baselines before Klamath River dam removal Open
Global restoration and conservation of freshwater biodiversity are represented in practice by works such as the Klamath River Renewal Project (KRRP), the largest dam removal and river restoration in the United States, which has reconnected…
View article: A comparison of <scp>eDNA</scp> sampling methods in an estuarine environment on presence of longfin smelt (<i>Spirinchus thaleichthys</i>) and fish community composition
A comparison of <span>eDNA</span> sampling methods in an estuarine environment on presence of longfin smelt (<i>Spirinchus thaleichthys</i>) and fish community composition Open
The loss of tidal wetlands in the San Francisco Bay estuary have led to declines in native fish presence. Restoration of tidal wetlands in this area has intensified, with a primary goal of increasing the number of native fishes. We compare…
The artemis package for environmental DNA analysis in R Open
We introduce artemis, a new package for the R statistical programming environment designed to analyze quantitative polymerase chain reaction (qPCR) data from environmental DNA studies. The artemis package directly addresses several challen…
Development of a quantitative polymerase chain reaction assay and environmental DNA sampling methods for Giant Gartersnake (Thamnophis gigas) Open
The Giant Gartersnake (Thamnophis gigas) is a low density visually evasive species with a low detection probability based on standard field survey methods (e.g., traps, visual census). Habitat loss has resulted in extirpations or serious d…
Utilizing environmental DNA for fish eradication effectiveness monitoring in streams Open
Introductions of non-native fish have the potential to cause substantial economic and ecological losses. In the western United States, non-native brook trout (Salvelinus fontinalis) are widely established and pose a threat to the persisten…
Confirmed Observation: A North American Green Sturgeon<i>Acipenser medirostris</i>Recorded in the Stanislaus River, California Open
Two sturgeon species are native to the San Francisco Estuary watershed in California: White Sturgeon Acipenser transmontanus and North American Green Sturgeon Acipenser medirostris. The San Francisco Estuary has two main tributaries, the S…
Evaluation and Interpretation of Genetic Effective Population Size of Delta Smelt from 2011–2014 Open
Delta Smelt have collapsed demographically, but little is known about their current genetic status. We used 12 microsatellite loci to evaluate two measures of the effective population size (Ne) of Delta Smelt. Ne is a measure that offers p…
Detection of Adult Green Sturgeon Using Environmental DNA Analysis Open
Environmental DNA (eDNA) is an emerging sampling method that has been used successfully for detection of rare aquatic species. The Identification of sampling tools that are less stressful for target organisms has become increasingly import…