I have been researching an unusual group of sponges called hermit crab sponges since 1986 and am a leading authority on these poriferans.
Other current research interests include:
Further Information on my research is available on the WWW at: http://www.public.coe.edu/departments/Biology/hermit.html
Papers related to research on sponges and hermit crab sponge/hermit crab associations and other symbiotic associations involving marine organisms.
"The Florida Hermit-crab sponge, a little known "mobile" sponge from
the NE corner of the Gulf of Mexico, and its Hermit Crab Associations",
1994, 273-278. In: Sponges in Time and Space, R. Van Soest, T. Van
Kempen & J. Braekman (eds), Proceedings of the IVth International
Porifera Congress, 19-23 April 1993, Amsterdam, Netherlands, Balkema,
Rotterdam, 515 pp.
"Sponge/shell switching by hermit crabs, Pagurus impressus" 1995, Invertebrate Biology, 114(1):73-78.
"Redescription of the hermit-crab sponge, Spongosorites suberitoides" 1997. (w/ M. Kelly-Borges, British Natural History Museum). Natural History, 31, 315-328.
"Gastropod shell substrates of the Florida hermit-crab sponge, Spongosorites suberitoides" 1997. (with student Chris Brown). Bulletin of Marine Science, 61(2), 215-223.
"Shared use of a single hermit crab sponge by two individual Pagurus impressus" 2001. Bulletin of Marine Science, 69(3):1239-1242.
"Population dynamics and epibiont associations of hermit crabs (Crustacea, Decapoda, Paguroidea) on Dog Island, Florida. 2003. Memoirs of Museum Victoria, Melbourne, Australia, 60(1): 45-52.
"Physical and chemical analysis of the siliceous skeletons in six sponges of two sponge groups (Demospongiae and Hexactinellida). 2003. Microscopy Research and Technique, 62(4):336-355 [special issue on silica deposition in sponges].
"Polyonyx gibbesi (Decapoda: Anomura: Porcellanidae) and Pinnixa chaetopterana (Decapoda: Brachyura: Pinnotheridae), two crab commensals in tubes of the polychaete worm Chaetopterus sp., in the northern Gulf of Mexico" 2006. Biology of Anomura II (A. Asakura, ed.), Crustacean Research, Special Number 6: 23-31.
Zdenek Duris and Floyd Sandford. Commensalistic shrimp living in sponge
shelters, Tobacco Caye, Belize, Western Caribbean. In Prep.
"Modern Zoos: New Challenges - New Responsibilities" 1984. American Biology
Teacher, 46(1):36-42 (with 8 photographs and front cover photo).
"The Zoos role in animal behavior education". 1985. International Zoo News, 190(32/2):26-33 (with 2 photographs).
"Intra- and interspecific aggression in two species of field crickets". 1987. Aggressive Behavior, 13:149-164.
"Environmental Education in Hertfordshire". 1990. The Biosphere, No. 5, Winter, School of Natural Resources, OSU, OH.
"Teaching Environmental Studies as a non-spectator experience", Proc. of the Ann. Meeting of NAEE, San Antonio, TX, Nov. 2-7, 1990.
The Tropical Rain Forest Food Web Game. 1992 (3rd Ed). For grades 3-8, 72 pp. An interactive, role-playing game to help educate about the interconnections in an Amazon rainforest. (Rights to game transferred to Passport to Knowledge in 1998).
"Hope for the Future: Rediscovering Earth as Home". 1992. Muses (publication of the Iowa Humanities Board), 15(1):12-13.
"Darwin Remembers" a one-act play for a single actor. 2002. Excerpt published in Darwin Day Collection One, The Darwin Day Program, Tangled Bank Press, pp. 217-220, 466 pp.
"Like two old trees" (a poem). Wapsipinicon Almanac (Tim Fey, Ed.).
Number 13. (Winter 2006 issue).