Following formal education in local public schools I enrolled at Iowa State University in Ames, Iowa, receiving a B. S. in Botany in 1966 and a Ph.D. in Botany in 1970. I was employed as an Assistant Professor of Biology at Bowling Green State University in 1970 and promoted to Professor in 1981. Other positions held during my academic career include , Visiting Assistant Professor of Biology, Central Michigan Univ., NSF Summer Institute, Central Michigan University Biological Station, Beaver Island, MI, June -August 1971, Visiting Professor, Univ. of Michigan Biological Station, June-August 1974-present, Visiting Professor of Biology, Virginia Polytechnic Institute and State University, 1982-1983, Visiting Research Scientist, Hydrology Centre, New Zealand Department of Scientific and Industrial Research, Christchurch, New Zealand 1991-1992, Fellow, Cooperative Institute for Limnology and Ecosystems Research, Ann Arbor, MI, 1991-present, Membership Chair and Institutional Representative of the Great Lakes Aquatic Ecosystem Research Consortium, 1993-present and Institutional Representative to National Association of State Universities and Land Grant Colleges, Section on Fisheries and Wildlife Resources, 1993-present. I have served as a consultant to over 25 private and public organizations on water quality issues, published over 80 articles and 50 abstracts on the ecology of aquatic ecosystems and have received major research funding from NSF, USEPA, NOAA, and the Procter and Gamble Co. More than 50 masters, Ph.D. and post-doctoral researchers have been trained in my laboratory.

Species reviewed

Achnanthes inflata | Amphora minutissima | Amphora pediculus | Anomoeoneis fogedii | Caloneis lewisii | Chamaepinnularia hassiaca | Craticula ambigua | Craticula coloradensis | Cymatopleura solea | Cymbella affiniformis | Cymbella alpestris | Cymbella aspera | Cymbella blinnii | Cymbella janischii | Cymbella neocistula var. islandica | Cymbopleura incerta | Diatoma tenuis | Encyonema evergladianum | Encyonopsis dakotae | Encyonopsis montana | Entomoneis alata | Entomoneis ornata | Entomoneis paludosa | Entomoneis punctulata | Epithemia argus | Eunotia canicula | Eunotia enischna | Eunotia formica | Eunotia horstii | Eunotia mydohaimasiae | Eunotia obliquestriata | Eunotia rushforthii | Eunotia sudetica | Fallacia latelongitudinalis | Fallacia pygmaea | Fallacia subhamulata | Fallacia vitrea | Fragilaria tenera | Fragilariforma acidobiontica | Fragilariforma nitzschioides | Fragilariforma virescens | Gomphoneis eriense var. angularis | Gomphoneis eriense var. apiculata | Gomphoneis herculeana var. abundans | Gomphoneis septa | Gomphoneis trullata | Gomphonema apicatum | Gomphonema brebissonii | Gomphonema christenseni | Gomphonema coronatum | Gomphonema elongatum | Gomphonema freesei | Gomphonema louisiananum | Halamphora coffeaeformis | Halamphora latecostata | Halamphora montana | Halamphora normanii | Halamphora veneta | Karayevia amoena | Karayevia clevei | Karayevia laterostrata | Karayevia nitidiformis | Karayevia oblongella | Karayevia ploenensis var. gessneri | Karayevia suchlandtii | Kobayasiella jaagii | Kobayasiella madumensis | Kobayasiella micropunctata | Kobayasiella parasubtilissima | Kobayasiella subtilissima | Kurtkrammeria weilandii | Lindavia antiqua | Meridion anceps | Meridion circulare | Navicula caterva | Navicula goersii | Navicula rostellata | Navicula slesvicensis | Navicula subconcentrica | Navicula subrhynchocephala | Navicula viridula | Navicula viridulacalcis subsp. neomundana | Navicula vulpina | Nitzschia alpina | Nitzschia amphibia | Nitzschia biacrula | Nitzschia brevissima | Nitzschia columbiana | Nitzschia communis | Nitzschia desertorum | Nitzschia dissipata | Nitzschia oregona | Nitzschia regula var. robusta | Nitzschia sinuata var. tabellaria | Pinnularia borealis | Pinnularia borealis var. lanceolata | Pinnularia lata | Pinnularia parvulissima | Pinnularia rabenhorstii | Plagiotropis arizonica | Plagiotropis lepidoptera var. proboscidea | Planothidium apiculatum | Planothidium haynaldii | Planothidium holstii | Prestauroneis integra | Pseudostaurosira elliptica | Pseudostaurosira neoelliptica | Reimeria sapiens | Rhopalodia gibba | Rhopalodia musculus | Sellaphora bacilloides | Sellaphora bacillum | Sellaphora japonica | Sellaphora wallacei | Stauroforma exiguiformis | Stauroneis agrestis | Stauroneis kriegeri | Stauroneis pseudagrestis | Staurosira construens | Surirella atomus | Surirella brebissonii | Surirella iowensis | Surirella ovalis | Surirella stalagma | Surirella terryi | Synedra famelica | Tabellaria fenestrata | Tabellaria flocculosa | Tabularia fasciculata | Tryblionella calida | Tryblionella hungarica

Genera contributed

Humidophila