Fisheries and Oceans Canada (DFO) Science has been asked to undertake a Recovery Potential Assessment (RPA) of Eastern Pondmussel (Ligumia nasuta), Fawnsfoot (Truncilla donaciformis), Mapleleaf (Quadrula quadrula), and Rainbow (Villosa iris). A RPA process has been developed by DFO to provide information and scientific advice needed to fulfill requirements under the Species at Risk Act (SARA). These requirements include listing decisions, authorizations to carry out activities that would otherwise violate the SARA and development of recovery strategies (DFO 2007). The advice in the RPA may be used to inform both scientific and socio-economic elements of the listing decision, as well as development of a recovery strategy and action plan, and to support decision-making with regards to the issuance of permits, agreements and related conditions of the SARA. This document describes the biology, life history, habitat preferences, current status, and threats related to the Canadian populations of Eastern Pondmussel, Fawnsfoot, Mapleleaf and Rainbow. Mitigation measures and alternative activities related to the identified threats, that can be used to protect the species, are also presented.
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