%0 Journal Article %J Ecosystems %D 2003 %T Landscape scale variation in taxonomic diversity in four groups of aquatic organisms: the influence of physical, chemical and biological properties %A Greenfield, B. K. %A Hrabik, T. R. %A Lewis, D.B. %A Wilson, K.A. %A Kratz, T.K. %A Pollard, A %B Ecosystems %G eng %0 Generic %D 2001 %T Water color affects lake stable carbon isotope but not the food source for yellow perch %A Greenfield, B. K. %A Wilson, K.A. %C Madison, WI %8 August, 2001 %G eng %0 Generic %D 2000 %T Variability in species richness among four taxonomic groups in north temperate lakes with varying chemical characteristics and stream connectivity %A Greenfield, B. K. %A Hrabik, T. R. %A Lewis, D.B. %A Wilson, K.A. %A Kratz, T.K. %A Pollard, A %C Snowbird, Utah %8 August, 2000 %G eng