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Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Types Map Service (2) OGC WFS Layer (2) OGC WMS Service (2) Citation (1) Contacts Jon M Vallazza Upper Midwest Environmental Sciences Center Ecosystems Cory A Anderson Andrew F Casper More... Categories Data (2) Tag Types Theme (2) Place (2) Harvest Set (2) Tag Schemes None (2) ISO 19115 Topic Category (1) View Results as: JSON ATOM CSV

Upper Mississippi River water and bigheaded carp otolith chemistry data Data set includes water Sr:Ca, Ba:Ca, and δ18O for the Upper Mississippi River and tributaries and otolith Sr:Ca, Ba:Ca, and δ18O data from bigheaded carp collected in pools 19-21 of the Upper Mississippi River. Abstract from manuscript: Knowledge of environments used during early life history and movement patterns of Bighead Carp (Hypophthalmichthys nobilis) and Silver Carp (H. molitrix), collectively termed bigheaded carps, in the Upper Mississippi River (UMR) would be valuable for informing control measures to limit further population expansion and impacts of these species. Lock and Dam 19 (LD19) is a high-head dam on the UMR that delineates downriver areas where bigheaded carps are well-established from upriver... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Asian Carp, Hypophthalmichthys, Pools 19-21 of the Upper Mississippi River, USGS Science Data Catalog (SDC), biota, All tags... microchemistry, otoliths, stable isotopes, Fewer tags Using Pharyngeal Teeth and Chewing Pads to Predict Juvenile Silver Carp Total Length in the La Grange Reach, Illinois River: Data Silver carp (Hypophthalmichthys molitrix) are an invasive species in the Mississippi River Basin; understanding their vulnerability to predation as juveniles may inform control by native predators and predator stocking. Digestion of silver carp recovered from diets makes it difficult to determine the size classes most vulnerable to predation by native fishes. The objective of this study was to determine if total length of silver carp can be predicted from the size of their chewing pad, pharyngeal teeth, and pharyngeal arch, the structures most often found intact in diets. Juvenile silver carp (n=136: <180 mm) were collected using 60 hz pulsed- DC electrofishing and mini fyke nets in 2014 and 2015 from the La Grange... Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Illinois River, La Grange Reach, Macomb, IL, Silver Carp, USGS Science Data Catalog (SDC), All tags... chewing pads, juvenile, pharyngeal teeth, Fewer tags