Shay Howlin

2 items:

Analysis of Greater Sage-grouse Lek Data: Trends in Peak Male Counts (WEST) Trends in greater sage-grouse breeding populations are typically indexed by determining the peak number of males attending a lek in a lekking season. Numerous studies have estimated negative trends in sage-grouse breeding populations over time via data collected for the last 50 years. However, the inherent bias in data collection and unknown relationship between lek counts and population size limits the utility of using counts to evaluate range-wide population trends. This study estimated trends in the male segment of greater sage-grouse breeding populations within core and periphery areas in seven habitat management zones during two time periods, 1965-2015 and 2005-2015. In addition, we compared analysis methods... Categories: Data, Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Population & Habitat Evaluation/Projection, Project, Report, SA Science Catalog, Sage-grouse Lek, All tags...
Effects of local shoreline and subestuary watershed condition on waterbird use influences of geography scale and season in the Chesapeake Bay This dataset is comprised of six files related to waterbird surveys and resulting Index of Waterbird Community Integrity (IWCI) scores in 21 subestuaries of the Chesapeake Bay from 2010-2014. Two .csv files (1 data file: Prosser et al 2017_IWCI Results MS_Bird Survey Raw Data.csv, 1 definitions file: Prosser et al 2017_IWCI Results MS_Bird Survey Raw Data_Definitions.csv) contain data related to raw waterbird survey data from two seasons (summer and fall). Two .csv files (1 data file: Prosser et al 2017_IWCI Results MS_Species List.csv, 1 definitions file: Prosser et al 2017_IWCI Results MS_Species List_Definitions.csv) contain data related to 60+ Chesapeake waterbird species observed in surveys and their species... Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Anthropogenic Disturbance, Biological Indicators, Chesapeake Bay, Ecological Integrity, Estuaries, All tags...

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