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Arthur V. Brown Office: SCEN 705 |
Degrees:
Ph.D. University of North Texas, 1974Research Interests:
My primary research focuses on observational and experimental evaluation of the structure and functioning of stream ecosystems with an emphasis on those of distinct riffle and pool geomorphology. The impact of riffle and pool structure characteristic of alluvial gravel bed streams on community dynamics is of particular interest. One research objective is to develop and refine a reach level model for stream ecosystems. Grants from NSF, EPA, USFS, and other agencies have enabled my students and I to accumulate information regarding trophic dynamics, drift, detritus processing, organic carbon dynamics, distribution, migration, and production of biota (primarily invertebrates and fish) in Ozark and Ouachita Mountain streams. The significance of meiofauna in gravel bed streams is a major area of interest for us. Water quality and cave (stream) ecology constitute additional significant areas of interest, especially as they relate to preservation of endangered species. Our research has led to listing the Ozark cavefish, Amblyopsis rosae, as "threatened" and a cave crayfish (Cambarus aculabrum) as "endangered." Currently, grants from the Arkansas Natural Heritage Commission and the Arkansas Game and Fish Commission support our cave research.
Academic Interests:
Stream Ecology, Water Quality, Cave Ecology.Lab Website:
Click here to go to Dr. Brown's lab website.
Recent Publications:
Radwell, A. J. and A. V. Brown. 2008. Benthic meiofauna assemblage structure of headwater streams: density and distribution of taxa relative to substrate size. Aquatic Ecology. in press.
Freese Smith, A. and A. V. Brown. 2006. Effects of flow on meiofauna colonization in artificial streams and reference sites within the Illinois River, Arkansas. Hydrobiologia 571: 169-180.
Radwell, A. J. and A. V. Brown. 2006. Influence of fine sediments on meiofauna colonization densities in artificial stream channels. Archiv. Hydrobiol. 165: 63-75.
Graening, G. O., M. E. Slay, A. V. Brown, and J. B. Koppelman. 2006. Status update and distribution of the endangered Benton cave crayfish, Cambarus aculabrum (Decapoda: Cambaridae). Southwestern Naturalist 51: 376-381.
Graening, G. O., H. Hobbs III, M. E. Slay, W. Elliott, and A. V. Brown. 2006. Status update of the bristly cave crayfish, Cambarus setosus Faxon (Decapoda: Cambaridae) and range extension into Arkansas. Southwestern Naturalist 51: 382-396.