Paulo Lenhard

• Biodiversity Journal, 2 (4): 163-170

  A. Ignacio Agudo-Padrón & Paulo Lenhard
  Continental mollusc fauna of the Great Porto Alegre central region, RS, Southern Brazil

  ABSTRACT
  Actual available knowledge about the diversity and conservation status of the molluscan fauna occurring in the continental geopolitical space of the central section of Great Porto Alegre, Rio Grande do Sul State, RS, area of the Biome “Pampa” in Southernmost Brazil is analyzed and discussed. Geographically located on the right bank of the Jacuí Delta (in the homonymous basin) and legally protected under the category of “State Ecological Park”, next to Guaíba Lake where the Gravataí and Sinos rivers (severely polluted by the anthropogenic indiscriminate action) empty, the region holds 66 malacological species and subspecies - 42 gastropods (23 limnic and 19 terrestrial) and 24 bivalves, included in 45 Genera, 24 Families and two Classes - about 1/3 of the total number of species in the State. Fourteen are introduced and invasive alien species, i.e. 11 Gastropoda (one limnic, 10 terrestrial) and 3 bivalves. Finally, at least 8 native bivalves (Unionoida) are contained in National and State Red Lists of Endangered Fauna.

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