https://www.usgs.gov/centers/cerc
Location
Building 1 - Main Lab Building
4200 New Haven Road
Columbia
, MO
65201
USA
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Description of Work Initial tests of a variety of chemical stimuli identified a strong response to the algal food attractant. Field testing of chemical stimulants based on algae will seek to identify potent mixtures based on persistence and duration of attraction. These studies will include consideration of component chemicals such as amino acids produced by algae that enhance the attractiveness of the stimulus, based on carp smell and taste senses. Means of providing a sustained release of the stimulant will be explored through tests of various media. Tests will be conducted to confirm the possibility that carp can be conditioned to feeding stations that can be used to facilitate their capture. Relevance & Impact...
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Description of Work This spring (2014) we will measure Asian carp eDNA over time at a Missouri River site downstream of multiple spawning areas before and during spawning. We will measure the amount of Asian carp eDNA in water samples. The amount of eDNA will be related to the numbers of eggs and larvae counted in matched samples (water samples taken at the same time and place). The time since the eDNA was released by the carp will be estimated and these results will be related to the average age of AC eggs and larvae in matched samples. We will also test for substances which interfere with the eDNA measurement techniques and can lead to false negatives. We will also be validating markers developed by USGS and...
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Data represent reports of capture of black carp by commercial fishers and biologists with information regarding size characteristics of collected individuals, dimensions of capture gears, and spatial and temporal distributions of captures.
Tags: Atchafalaya River,
Black Carp,
Cumberland River,
Illinois River,
Mississippi River, All tags...
Missouri River,
Ohio River,
Tennessee River,
USGS Science Data Catalog (SDC),
White River,
biota,
gill net,
girth-length equation,
hoop net,
passive fishing gears, Fewer tags
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Interest in the field of environmental DNA (eDNA) is growing rapidly and eDNA surveys are becoming an important consideration for aquatic resource managers dealing with invasive species. However, in order for eDNA monitoring to mature as a research and management tool, there are several critical knowledge gaps that must be filled. One such gap is the fate of eDNA materials in the aquatic environment. Understanding the environmental factors that influence the decay of eDNA and how these factors impact detection probabilities over time and space could have significant implications for eDNA survey design and data interpretation. Here we experimentally explore eDNA decay in waste materials and reproductive cells obtained...
Categories: Data;
Types: Citation;
Tags: Aquatic Biology,
Ecology,
Environmental Health,
Genetics,
Missouri, All tags...
USGS Science Data Catalog (SDC),
eDNA,
environmental factors,
microbial load,
pH,
water temperature, Fewer tags
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The health of soils along roadways is critical for maximizing habitat quality and minimizing negative ecological effects of roads. Adjacent to unpaved roads, soil chemistry may be altered by the deposition of dust, as well as by road treatment with dust suppressants or soil stabilizer products. If present in roadside soils, these product residues may be available to plants, terrestrial invertebrates, or small mammals. Unfortunately, very few studies have attempted to track the transport of dust suppressants after application. As part of a larger ongoing study on the environmental effects of dust suppressant products on roadside plants and animals, we sampled roadside soils at Squaw Creek National Wildlife Refuge...
Categories: Data;
Types: Citation,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Road ecology,
Squaw Creek National Wildlife Refuge,
USGS Science Data Catalog (SDC),
Unpaved road,
dust, All tags...
dust suppressant, Fewer tags
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