why would reversibility provide greater health, other than to increase stochasticity due to greater numbers of applications of contraception?

POPULATION ESTIMATES

Complete spreadsheet with annual sums of horses (do not include burros) for all western rangelands at some fixed point in time in BLM’s annual cycle for each of the categories below.

  • Total free-ranging population
  • Total number removed
  • Total number in short-term holding facilities
  • Total number adopted
  • Total number moved from short- to long-term holding facilities
  • Total number ‘lost’ from long-term holding facilities

Complete spreadsheet with annual sums of horses (do not include burros) for each western state at some fixed point in BLM’s annual cycle for each of the categories below.

  • Total free-ranging population
  • Total number removed

Complete spreadsheet with the number of animals of each age-sex category removed from each HMA on a given date.

Complete spreadsheet with number of animals in each age-sex category that were adopted (removed) from short-term holding facilities each year.

Complete spreadsheet with number of animals in each age-sex category that were removed from short-term holding facilities and placed in long-term holding facilities each year.

Complete spreadsheet with number of animals in each age-sex category that were lost (removed) from long-term holding facilities each year due to deaths or any other causes.

Complete spreadsheet with herd-specific annual counts, date of count, type of craft (helicopter, fixed-wing plane, vehicle, or horseback), population estimates, percent of HMA inventoried, and methods used for inventory for a committee-selected sample of 40 HMAs for the years 2000-2011.

Provide counts, population estimates, and removals for each HMA for the last 2 years.

Based on the census and population estimate records provided by BLM for a sample of HMAs, it is difficult to understand how these data are converted into the annual national population estimates for free-ranging horses reported by the national program office. It is important for the committee to understand the process used for converting and aggregating the HMA numbers into a national statistic. The committee requests an explanation of how this is done and some documentation of the process for the past several years.



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