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ABoVE: Dall Sheep Lamb Recruitment and Climate Data, Alaska and NW Canada, 2000-2015
Entry ID: Dall_Sheep_Population_Dynamics_1640_1

Abstract: This dataset contains estimated annual average Dall sheep (Ovis dalli dalli) lamb-to-ewe ratios for each year from 2000-2015 across the full species range in Alaska and Northwestern Canada. Sheep population data are from surveys conducted over the 14 major mountain ranges encompassing the range of Dall sheep. For this study, the mountain ranges were divided into 24 mountain units due to differing climate gradients. Estimated covariate environmental and climate data used to examine the relationship between environmental conditions and Dall sheep population performance (per mountain unit) are also provided and include precipitation, temperature, snow cover, elevation, and distance to the center of the range.
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Geographic Coverage
Spatial coordinates   
  N: 69.71   S: 59.6   E: -123.55   W: -163.28

Data Set Citation
Version: 1
Other Citation Details: van de Kerk, M., D. Verbyla, A.W. Nolin, K.J. Sivy, and L.R. Prugh. 2018. ABoVE: Dall Sheep Lamb Recruitment and Climate Data, Alaska and NW Canada, 2000-2015. ORNL DAAC, Oak Ridge, Tennessee, USA.
Temporal Coverage
Start Date: 2000-01-01
Stop Date: 2015-12-31
Data Set Progress
Extended Metadata Properties
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Creation and Review Dates
Last DIF Revision Date: 2019-04-15