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- Table 1.3. Regional Species of Greatest Conservation Need listed in decreasing level of regional responsibility and concern
- RSGCN List: Mammals
- RSGCN List: Birds
Figure 1.2. Regional Species of Greatest Conservation Need, by taxonomic group. Pie graphs on the left show the portion of the species for which the region has high responsibility (in blue). Pie graphs on the right show the level of regional concern. The NEFWDTC continues to refine the RSGCN process and list to incorporate species in other major invertebrate groups. There is a solid foundation of invertebrate conservation in the Northeast on which these efforts are being built. Many of the Northeastern states included information about other major invertebrate groups in their original State Wildlife Action Plans. These groups included butterflies and moths (Order Lepidoptera), odonates (Order Odonata), snails, slugs, and saltwater mollusks (Phylum Mollusca), and cave beetles (Order Coleoptera, Family Carabidae), all of which were treated by one or more individual Northeastern states in their first State Wildlife Action Plans. However, information about conservation status and regional responsibility has not yet been analyzed in detail for all Northeastern species in these groups, and thus these groups are not included in this document. Based on the very large number of species in some of these groups, one might reasonably expect a significant number of potential RSGCN in these other invertebrate groups. According to Whitlock (2006), the individual Northeastern states listed 1,138 invertebrate species in addition to tiger beetles and freshwater mussels as SGCN in their original State Wildlife Action Plans. These species represent just a fraction of the total diversity of invertebrate species in the Northeast; for example, over 15,000 species of insects alone have been recorded from New York State (Leonard 1928). Recall that approximately 30% of the animal species that have been analyzed to date by NEFWDTC have been selected as RSGCN (see discussion above and Table 1.2). If only 30% of the 1,138 additional invertebrate species listed by Whitlock (2006) were to be screened as RSGCN by NEFWDTC, the list could nearly double its present size. The NEFWDTC taxonomic teams will continue to review information about status and trends for species in additional major invertebrate groups, including dragonflies and damselflies (Order Odonata), butterflies, moths, and skippers (Order Lepidoptera), and bees (Order Hymenoptera, Superfamily Apoidea). Updated RSGCN lists for these taxonomic groups are forthcoming from NEFWDTC. In the interim, because ongoing RSGCN review efforts are not complete for all invertebrate taxa, the RSGCN list also includes 11 federally listed invertebrate species that belong to taxonomic groups other than tiger beetles and freshwater mussels. These RSGCN include one burying beetle, two butterflies, a spider, three snails, two isopods, and two amphipods. These species are included on the RSGCN list because of their thorough status assessments and listing under the federal Endangered Species Act. Table 1.3 lists all of the highest priority species from the list of RSGCN updated December 16, 2013. This table includes those species for which there is both a high degree of conservation concern for the species overall, as well as a high responsibility on the part of state fish and wildlife agencies in the Northeast states to take a leadership role in the conservation of these species. It also includes 11 additional invertebrate species that have been formally protected under the Endangered Species Act. Many of these species have been the focus of regional conservation efforts, coordinated by states and/or the U.S. Fish and Wildlife Service (USFWS), to help prevent further population declines and the need for a listing under the federal Endangered Species Act. A complete list of RSGCN is provided by major taxonomic group in Appendix 2. Table 1.3. Regional Species of Greatest Conservation Need listed in decreasing level of regional responsibility and concern
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