Midwest Partners in Amphibian and Reptile Conservation

Midwest PARC Species List Additional Information

Ranking Amphibian and Reptile Species of the Midwest: State Listings and Regional Responsibilities


Figure 1. Regional conservation concern-responsibility matrix for amphibians and reptiles of the Midwest. Each species is placed into one of eight categories as evaluated against its regional concern and the region's responsibility toward sustaining its US population. See text for determination of each category.

Introduction

Two factors are used in developing the species rankings for amphibians and reptiles of the Midwest (MW). First, for each species we determine the percentage of MW states where the species occurs that also list the species as endangered, threatened, special concern, or a species of greatest conservation need. This results in a regional conservation concern score (>75% = high; 50-74% = medium-high; 25-49% = medium-low; <25% = low). This information on state listings is derived from each state's respective State Wildlife Action Plan. Second, a regional conservation responsibility score is calculated by determining the amount of the species' US range that occurs in the MW (>50% = high; <50% = low). Species' ranges are determined through visual examination of the range maps in Conant and Collins (1991). Each species that occurs within the MW is then placed into one of eight categories (Figure 1).

Rank Codes

  • Category A species (High Regional Concern-High Regional Responsibility) are listed in >75% of the MW State Wildlife Action Plans and >50% of the US range occurs in the MW.
  • Category B species (High Regional Concern-Low Regional Responsibility) are listed in >75% of the MW State Wildlife Action Plans and <50% of the US range occurs in the MW.
  • Category C species (Medium-high Regional Concern-High Regional Responsibility) are listed in 50-74% of the MW State Wildlife Action Plans and >50% of the US range occurs in the MW.
  • Category D species (Medium-high Regional Concern-Low Regional Responsibility) are listed in 50-74% of the MW State Wildlife Action Plans and <50% of the US range occurs in the MW.
  • Category E species (Medium-low Regional Concern-High Regional Responsibility) are listed in 25-49% of the MW State Wildlife Action Plans and >50% of the US range occurs in the MW.
  • Category F species (Medium-low Regional Concern-Low Regional Responsibility) are listed in 25-49% of the MW State Wildlife Action Plans and <50% of the US range occurs in the MW.
  • Category G species (Low Regional Concern-High Regional Responsibility) are listed in <25% of the MW State Wildlife Action Plans and >50% of the US range occurs in the MW.
  • Category H species (Low Regional Concern-Low Regional Responsibility) are listed in <25% of the MW State Wildlife Action Plans and <50% of the US range occurs in the MW.