Filters: Tags: {"scheme":"Producer Defined"} (X) > Types: Citation (X)
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Crustacean zooplankton were collected, enumerated, identified, and measured within the St. Clair-Detroit River System (SCDRS). Collections were made using a 0.5 m diameter 153 um zooplankton net. Nets were lowered to ~0.5 m from bottom depth and retrieved. Nets were utilized with a General Oceanics flowmeter to calculate the distance the net traveled. At sites of collection, both temperature (degrees C) and Secchi depth (m) were collected for abiotic influencing factors of the zooplankton community. Collected specimens were narcotized in sugar formalin. Specimens were enumerated, identified, and measured under a dissection microscope. Volumetric estimates (m^-3) were obtained by applying the distance traveled and...
Categories: Data,
Data Release - Revised;
Types: Citation;
Tags: Detroit River,
Lake Erie,
Lake Huron,
Lake Saint Clair,
Saint Clair River,
Diet contents of Deepwater Sculpin (Myoxocephalus thompsonii) were identified, enumerated, and measured to monitor the changes in the offshore benthic fish community within Lake Huron. Collections were made using a 21-m headrope with a 4.76mm square mesh cod-end with 10 minute contour trawl tows.. Deepwater Sculpin collected from the USGS fall forage (2003-2005 and 2010-2014) were counted and weighed en masse on board research vessel. Individual weights (nearest 0.001g) and measurements (0.1mm) were conducted in laboratory setting. Stomachs were extracted in laboratory setting (from esophogus to pyloric ceaca). Stomachs were stored in ethanol for later dissection. Stomach contents were removed in petri dish. All...
This tabular data set contains information about the diets of double-crested cormorants (Phalacrocorax auritus) collected from Saginaw Bay, Lake Huron during April-September 2013 and 2014. Diet items were identified, enumerated, and measured.
Categories: Data;
Types: Citation;
Tags: Little Charity Island,
Phalacrocorax auritus,
Saginaw Bay,
Spoils Island, Saginaw Bay, MI,
USGS Science Data Catalog (SDC),
This is a tabular data set that contains morphological and experimental data for a study testing if silver stage American eel respond to each other's odor. Inside a laboratory flume, downstream-swimming eels were exposed to both live (putative attractant) and dead (putative repellent) conspecific washings to determine whether their trajectory of downstream movement, level of activity, or time spent inside targeted areas of the arena changed after exposure. One CSV file contains eel morphological data and the other CSV file describes behavioral responses.
Categories: Data;
Types: Citation;
Tags: Northern Appalachian Research Laboratory,
USGS Science Data Catalog (SDC),
animal behavior,
biota,
chemical ecology,
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