2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/6802The varying dwarf galaxy populations in different environments poses a problem for Cold Dark Matter (CDM) hierarchical clustering models. In this paper we present results from a survey conducted in different environments to search for low surface brightness (LSB) dwarf galaxies.2 pages to appear in proceedings of IAU symposium 220, 'Dark Matter in Galaxies', eds Stuart Ryder, D.J. Pisano, Mark Walker and Ken FreemanAstrophysicstext