(Download) "Distribution of Freshwater Sponges and Bryozoans in Northwest Indiana." by Proceedings of the Indiana Academy of Science * eBook PDF Kindle ePub Free

eBook details

Title: Distribution of Freshwater Sponges and Bryozoans in Northwest Indiana.
Author : Proceedings of the Indiana Academy of Science
Release Date : January 29, 2003
Genre: Engineering,Books,Professional & Technical,
Pages : * pages
Size : 190 KB

Description

ABSTRACT. Current biogeographical distributions of freshwater sponges (Porifera) and bryozoans (Ectoprocta and Entoprocta) are poorly known in Indiana. Although seemingly ubiquitous in many aquatic communities, neither group has received much notoriety in this state, nor the midwestern United States. In an initial effort to begin the systematic taxonomic distribution of these groups in Indiana, this study identified 2 sponges and 13 bryozoans in northwest Indiana lakes. The recent appearance of the zebra mussel (Dreissena polymorpha) in the Great Lakes has focused new attention on the sessile benthic communities, as significant changes in benthic community structure are expected with the introduction of this exotic species. Without knowing the historical and current distribution of native invertebrates, such as the sponges and bryozoans, it is not possible to identity changes in community composition over time. Keywords: Porifera, Ectoprocta, Entoprocta, freshwater bryozoan, freshwater sponge