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The non-marine mollusks of Montana — a part of the molluscan fauna of the state in the Northwestern United States. The non-marine mollusks of Montana consist of land snails and slugs as well as freshwater snails, freshwater mussels and freshwater clams. ==Species== A number of species of non-marine molluscs are found in the wild in Montana. ;Gastropods There at least 155 species of gastropods found in Montana.〔(【引用サイトリンク】title=Gastropoda )〕 Some of these species are exotics (not native to Montana)〔Exotic species have been deliberately or accidentally introduced to areas outside of their native geographic range and are able to reproduce and maintain sustainable populations in these areas. These exotic populations may also be referred to as alien, introduced, invasive, non-native, or non-indigenous.(【引用サイトリンク】title=Species Status Codes, Exotics )〕 and some species have been designated as ''Species of Concern''.〔Species of Concern are native taxa that are at-risk due to declining population trends, threats to their habitats, restricted distribution, and/or other factors. Designation as a Montana Species of Concern or Species of Concern is based on the Montana Status Rank, and is not a statutory or regulatory classification. Rather, these designations provide information that helps resource managers make proactive decisions regarding species conservation and data collection priorities.(【引用サイトリンク】title=Species Status Codes, Species of Concern )〕 ;Freshwater bivalves There are at least 42 species of freshwater bivalves known in Montana.〔(【引用サイトリンク】title=Montana Field Guide-Bivalvia )〕 The Montana Department of Fish, Wildlife and Parks has identified a number of bivalve species as ''Species of Concern''.〔''Species of Concern are native taxa that are at-risk due to declining population trends, threats to their habitats, restricted distribution, and/or other factors. Designation as a Montana Species of Concern or Potential Species of Concern is based on the Montana Status Rank, and is not a statutory or regulatory classification. Rather, these designations provide information that helps resource managers make proactive decisions regarding species conservation and data collection priorities. See the latest Species of Concern Reports for more detailed explanations and assessment criteria.''(【引用サイトリンク】title=Montana Field Guide-Species of Concern )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「List of non-marine molluscs of Montana」の詳細全文を読む スポンサード リンク
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