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Location Folder Show Tree ROOT _ScienceBase Catalog __Upper Midwest Environmental Sciences Center (UMESC) ___Upper Midwest Environmental Sciences Center Data ____Laurentian Great Lakes GIS Data GLRI: Avian Botulism in Distressed Great Lakes Environments GLRI: Birds as Indicators of Contaminant Exposure in the Great Lakes GLRI: Characterizing Habitat and Food Web Structures Across Great Lakes Rivermouth Estuaries Imagery More... Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Types Map Service (4) OGC WFS Layer (4) OGC WMS Layer (4) OGC WMS Service (4) Contacts U.S. Geological Survey - ScienceBase Ecosystems Timothy J Fox Steven C Houdek Luke J Fara Brian Lubinski Categories Data (3) Tag Types Theme (4) Place (4) USGS Scientific Topic Keyword (1) Harvest Set (2) Tag Schemes None (3) Common geographic areas (4) ISO 19115 Topic Category (1) USGS Thesaurus (1) View Results as: JSON ATOM CSV Browse Folder

Lake Michigan Sea Duck Survey 2009-2014 These data contain observation and null polygons for waterfowl aerial surveys of Lake Michigan collected through the years 2009-2014. Polygons were created adjacent to either side of the flight lines (transects). The right and left offset of the polygons from the flight path, was determined using the average altitude of the plane along the transect and the observation angle through the plane’s window. Observed birds were counted and identified by species. This count data was attributed to the polygon closest to the point along the transect where the observation occurred, and on the side of the plane in which the observation took place. The point data represent counts where each point represents a single species.... Tags: Environmental Health, Lake Michigan, USGS Science Data Catalog (SDC), Wildlife Biology, Wildlife Disease, All tags... biota, birds, Fewer tags Lake Michigan 2011-13 aerial surveys common loon observations We surveyed fixed-width transects to determine waterbird distribution and estimate relative density. Transects generally paralleled shorelines to maximize efficiency and safety. Fixed-width transects were spaced at 3.2 and 4.8 km intervals and extended up to 32 km offshore so as to include waters with depth up to 80 m. Transects were established using snapPLAN software (TRACK’AIR Aerial Survey Systems, The Netherlands). Surveys were flown at an average ground speed of about 220 km/h at an altitude of about 61-76 m above the water using a US Fish and Wildlife Service fix-winged aircraft (Partenavia P68 Observer 2). Two trained observers, one on each side of the plane, identified and tallied waterbirds within 200... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Aerial Survey, Distribution, Lake Michigan, common loon Lake Michigan 2010-11 selected common loon telemetry observations Implantable satellite transmitters (e.g., Model PTT-100, Microwave Telemetry, Inc) were incorporated into the study to provide fine-resolution location data for a sample of the adult male common loons fitted with geolocator tags in 2010 and 2011. Transmitters were implanted in the abdominal cavity following procedures developed by Korschgen et al. (1996). The satellite transmitters were programmed to transmit on a variable schedule based on the anticipated stage of migration during the loon’s annual cycle - 8 hours on:72 hours off during the breeding season, 8 hours on:24 hours off while migrating, 6 to 8 hours on:96 hours off on the wintering grounds, and 8 hours on:24 hours off during spring migration, and 8 hours... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Lake Michigan, Platform Terminal Transmitter, USGS Science Data Catalog (SDC), common loon, distribution, All tags... location estimate, satellite transmitter implant, Fewer tags Lake Michigan common loon dive data Breeding common loons for the movement and foraging pattern study were obtained from lakes in central and northern Minnesota and Wisconsin, and the Upper Peninsula of Michigan during summers 2010-2012. Both adults of a territorial pair were fitted with archival geolocator tags (Model LAT 2500; 34.6 x 8.3 mm, 4.4 g; Lotek Wireless Inc.). A combination of adhesive and plastic cable ties were used to affix the geolocator tag to a modified lock-on aluminum leg band. Tags were programmed to collect daily location estimates for up to two years, tag temperature (0.02o C accuracy, ≤ 0.05o C resolution) at 30-min intervals, and pressure data (±1% accuracy, 0.05% resolution) at 20-sec intervals during daylight hours to document... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Archival geolocator tag, Lake Michigan, common loon, dive attributes, foraging patterns Distribution and foraging patterns of common loons on Lake Michigan with implications for exposure to type E avian botulism: Data Common loons (Gavia immer) staging on the Great Lakes during fall migration are at risk to episodic outbreaks of type E botulism. Information on distribution, foraging patterns, and exposure routes of loons are needed for understanding the physical and ecological factors that contribute to avian botulism outbreaks. Aerial surveys were conducted to document the spatiotemporal distribution of common loons on Lake Michigan during falls 2011–2013. In addition, satellite telemetry and archival geolocator tags were used to determine the distribution and foraging patterns of individual common loons while using Lake Michigan during fall migration. Common loon distribution observed during aerial surveys and movements of... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service