Christopher is one of our senior invertebrate taxonomists and ecologists, and is manager of our Woodland, California office. He performs rare, threatened and endangered invertebrate species surveys, quantitative bioassessment using macroinvertebrates as a measure of habitat quality and function in relation to ecological studies, as well as impact assessment and restoration monitoring, typically focusing on temporary aquatic and terrestrial habitats. Christopher is a specialist in freshwater Crustacea and has field experience all over the world.  He is a member of the International Union of Conservation and Nature (IUCN) Species Survival Commission, Invertebrate Conservation Steering Committee and the Inland Waters Crustacean Specialist Group.

Christopher is recognized as a world authority on fairy shrimp, tadpole shrimp and clam shrimp, and has worked with the rare, threatened and endangered species in the USA, Brazil, and Australia. As a taxonomist, he has discovered and described more than 20 species new to science, as well as three new genera, and two new subfamilies. Christopher has more than 30 publications on taxonomy and ecology of crustaceans.

Since joining EcoAnalysts, Inc. in 2002, Christopher’s primary duties have included conducting quantitative habitat assessments using benthic macroinvertebrates, conducting special-status invertebrate surveys for both terrestrial and aquatic environments, and conducting special-status invertebrate species surveys in conjunction with biological assessments, environmental assessments, wetland delineations and biological resource inventories. He is experienced in writing single and multi-species habitat conservation plans and environmental assessments for special-status invertebrates.  He is also experienced in writing public health sections for environmental impact assessments.

With all the required state and federal permits, Christopher has field experience with the following rare, threatened and endangered species: vernal pool fairy shrimp, vernal pool tadpole shrimp, conservancy fairy shrimp, longhorn fairy shrimp, Riverside fairy shrimp, San Diego fairy shrimp, mid-valley fairy shrimp, Moore’s fairy shrimp, iron pool fairy shrimp, Buchannan’s fairy shrimp, Shasta crayfish, California freshwater shrimp, Morro shoulderband snail, valley elderberry longhorn beetle, San Joaquin tiger beetle, delta green ground beetle, Ricksecker’s water loving beetle, Idaho springsnail, Bruneau hotspring snail, Banbury springs limpet, Utah Valvata, Snake River physa, bliss rapids springsnail, San Francisco forktailed damselfly, Carson wandering skipper and the lotis blue butterfly.

From 1995 to 2002 Christopher worked for Jones and Stokes in Sacramento, CA and was leader of the Invertebrate Ecology Group from 1998 on.  While at Jones and Stokes, Christopher performed benthic macroinvertebrate as well as special-status species surveys, including the collection, identification, and enumeration of specimens and subsequent analysis of field data. He also prepared environmental assessments, habitat conservation plans and biological assessments for Endangered Species Act compliance.

From 1993 to 1995 Christopher was an entomologist with the California Department of Water Resources.  His duties included conducting benthic macroinvertebrate surveys including the collection, identification, and enumeration of specimens and data analysis.  He gathered baseline water quality data on the major northern California reservoirs and drainage systems.

Also during this time, Christopher was an on-call Invertebrate Ecologist for Enplan in northern California. During this time Christopher conducted surveys for fairy and tadpole shrimp and rare and endangered plants in vernal pool habitats.  He also conducted surveys for the federally listed Valley elderberry longhorn beetle.

From 1990 to 1993 Christopher was an entomologist with the Shasta Mosquito and Vector Control District. While there, he developed a vernal pool ecosystem sampling protocol and protection plan.  He also conducted bioassays, pesticide resistance testing, efficacy tests and developed and implemented new pesticide field and laboratory tests. Christopher was also responsible for the monitoring of adult and larval mosquito populations, conducting monitoring for viral encephalitis and he performed tick surveys for Lyme’s disease monitoring.

Professional Memberships

• The Crustacean Society
• International Large Branchiopod Society
• Southwestern Association of Freshwater Invertebrate Taxonomists (SAFIT)
• Pan-Pacific Entomological Society
• North American Benthological Society (NABS)
• California Inland Invertebrate Working Group (IIWG)
• International Union for Conservation and Nature (IUCN), Species Survival Commission.Member of the Invertebrate Conservation Steering Committee, and member of the Inland Water Crustacean Specialist Group

Curatorial Associations, Courses Taught

• California Academy of Sciences, San Francisco.  Identifications of large branchiopod crustaceans
• United States Museum of Natural History, Smithsonian.  Identifications of large branchiopod crustaceans
• Bohart Museum of Entomology, University of California, Davis.  Identifications of large branchiopod crustaceans and tiger beetles
• University of California, Davis.  Instructor for a variety of entomology and invertebrate ecology extension courses
• Freshwater Crustacea of Western North America. Workshop taught for Xerces Society in 2004
• Freshwater Crustacea of Western North America. Workshop taught for SAFIT in 2005
• The Fairy Shrimp and Tadpole Shrimp of California and Oregon. Workshop taught yearly in Woodland, California

Guest Editor, Hydrobiologia. Guest editor Hydrobiologia special volume 486: Hydrobiologia/Developments in Hydrobiology “Studies on Large Branchiopod Biology IV.” proceedings of the fourth international large branchiopod symposium. Editors: A. Maeda-Martinez, B. Timms, D.C. Rogers, A. Abreu-Grobois, and G. Murugan.

Co-editor, Anostracan News. Quarterly newsletter of the International Large Society (now in volume 11).

Associate Editor, Journal of Crustacean Biology. Associate editor for branchiopod crustacean submissions. The Journal of Crustacean Biology is the journal of the Crustacean Society, and is the premier crustacean journal of the world.

ILBS Coordinating Editor. Coeditor and journal liaison for the International Large Branchiopod Society, overseeing the publication of symposium volumes.

Editor, EcoAnalysts, Inc. Technical Publications Series. EcoAnalysts’ own publication series to provide technical, biological and diagnostic information in a user friendly format.

Technical Training

• Northwestern Biological Assessment Taxonomic Workshop (Mollusks) (2006)
• Northwestern Biological Assessment Taxonomic Workshop (Ephemeroptera) (2005)
• Northwestern Biological Assessment Taxonomic Workshop (Plecoptera) (2004)
• Northwestern Biological Assessment Taxonomic Workshop (Mollusks and Oligochaetes) (2002)
• U.S. Forest Service: Certification for “Survey and Manage” mollusk species under the Northwest Forest Plan (2000)
• Bioassessment Working Group: Western freshwater mollusks (2000)
• U.S. Fish & Wildlife Service:  Certification class for the Quino checkerspot butterfly (1999)
• University of California, Davis: The Endangered Species Act (1996)
• CA. Academy of Sciences: Neuropteroid entomological biology and taxonomy (1996)
• Wetland Training Institute: Wetland delineations (1995)
• University of California, Davis: Wetland regulation and compliance (1995)
• University of California, Davis: Mitigation measure development and monitoring (1995)
• Denton Belk, Ph.D.: Ecology and taxonomy of large branchiopod Crustacea (1995)
• Denton Belk, Ph.D.: California Anostracan biology and taxonomy (1994)
• Cornell University: Ornithological biology (1985)

Publications

• Rogers, D.C.  In preparation.  The Anostraca of the Nearctic region.
• Rogers, D.C. & A.M. Maeda-Martínez. In preparation. The Anostraca of the World. Bachuys Publishing.
• Maeda-Martínez, A.M. & D.C. Rogers. In preparation. The Notostraca of the World. Bachuys Publishing.
• Rogers, D. C., P. de los Ríos & O. Zuñiga. Submitted. The fairy shrimp (Crustacea: Branchiopoda: Anostraca) of Chile. Journal of Crustacean Biology.
• Rogers, D. C. & A.O. Ferreira. In press. A new species of Branchinecta (Anostraca; Crustacea) from Brazil. Zootaxa.
• Rogers, D. C. 2006. A genus level revision of the Thamnocephalidae (Crustacea: Branchiopoda: Anostraca). Zootaxa 1260: 1-25
• Rogers, D. C. 2006. Parartemiopsis longicornis (Smirnov), senior synonym of P. mongolica Rogers (Crustacea: Branchiopoda: Anostraca), with remarks on the validity of the genus. Zootaxa 1188: 49-54.
• Rogers, D. C., D. Quinney, J. Weaver, & J. Olesen. 2006. A new giant species of predatory fairy shrimp from Idaho (Branchiopoda: Anostraca). Journal of Crustacean Biology, 26:1-16.
• Rogers, D. C. 2006. Three new species of Branchinecta (Crustacea: Branchiopoda: Anostraca) from the Nearctic. Zootaxa, 1126: 35-51.
• McLaughlin, P.A., D.K. Camp, M.V. Angel, E.L. Bousfield, P. Brunnel, R.C. Brusca, D. Cadien, A.C. Cohen, K. Conlan, L.G. Eldredge, D.L. Felder, J.W. Goy, T. Haney, B. Hann. R. W. Heard, E. A. Hendrycks, H. H. Hobbs III, J. R. Holsinger, B. Kensley, D. R. Laubitz, S.E. LeCroy, R. Lemaitre, R.F. Maddocks, J.W. Martin, P. Mikkelsen, E. Nelson, W.A. Newman, R.M. Overstreet, W.J. Poly, W.W. Price, J.W. Reid, A. Robertson, D.C. Rogers, A. Ross, M. Schotte, F.R. Schram, C.T. Shih, L. Watling, G.D.F. Wilson, & D.D. Turgeon. 2005. Common and scientific names of aquatic invertebrates from the United States and Canada: crustaceans. American Fisheries Society, Special Publication 31, Bethesda, Maryland.
• Maeda-Martínez, A.M., D.C. Rogers & R.D. Worthington.  2005. First records of the fairy shrimp Streptocephalus moorei Belk, 1973 (Branchiopoda: Anostraca) from the United States. Journal of Crustacean Biology 25: 547-550.
• Rogers, D. C. 2005. Identification Manual to the freshwater Crustacea of the western United States and adjacent areas encountered during bioassessment. EcoAnalysts, Inc. Technical Publications #1.
• Rogers, D.C.  A new genus and species of Chirocephalid fairy shrimp (Crustacea: Branchiopoda: Anostraca) from Mongolia. Zootaxa, 997:  1-10.
• Rogers, D.C., J.B. Jensen & T.M. Floyd. 2004. Eubranchipus stegosus n. sp. (Crustacea: Anostraca), a bizarre new species of fairy shrimp from the southeastern United States. Hydrobiologia 528: 201-207.
• Rogers, D.C. & E.C.L. Rogers. 2004. Observations on the feeding behavior in western North America (Coleoptera). Cicindela 36: 17-21.
• Daniels, S.R., M. Hamer & D.C. Rogers. 2004. Molecular evidence suggests an ancient radiation for the fairy shrimp genus Streptocephalus (Branchiopoda: Anostraca). Biological Journal of the Linnean Society 82: 313-327.
• Rogers, D.C. 2003. Revision of the Thamnocephalid genus Phallocryptus (Crustacea: Branchiopoda: Anostraca). Zootaxa 257: 1-14.
• Rogers, D.C. 2003. The development of the male second antennae in Polyartemiella hazeni (Murdoch, 1884) with a morphological definition of the Chirocephalidae (Crustacea: Branchiopoda). Zootaxa 251: 1-12.
• Belk, D. & D.C. Rogers. 2002.  A new species of Branchinecta previously confused with two other species.  Hydrobiologia 486: 49-55.
• Rogers, D.C. 2002.  Amplexial morphology of selected Anostraca.  Hydrobiologia 486: 1-18.
• Rogers, D.C. 2002. A morphological re-evaluation of the family Linderiellidae, with a redescription of Dexteria floridiana (Dexter 1956) (Anostraca: Crustacea). Hydrobiologia 486: 56-61.
• Rogers, D.C. 2002. Female based characters for anostracan (Crustacea:Branchiopoda) identification: a key for species in California and Oregon, USA. Hydrobiologia 486: 125-132.
• Rogers, D.C. & M. Fugate. 2001.  Branchinecta hiberna, a new species of fairy shrimp (Crustacea: Anostraca) from western North America. Western North American Naturalist 61(1): 11-18.
• Rogers, D.C. 2001. Revision of the North American Lepidurus (Notostraca: Crustacea) with a description of a new species previously confused with two other species.  Journal of Crustacean Biology 21: 994-1006.
• Rogers, D.C. 2000.  Eulimnadia texana Packard 1871 (Conchostraca: Crustacea) from northern California: anthropogenic introduction? Pan-Pacific Entomologist 76(2): 132-133.
• Rogers, D.C. 1998.  Aquatic macroinvertebrate occurrences and population trends in constructed and natural vernal pools in Folsom, California.  In:  Witham, C.W., E.T. Bauder, D. Belk, W.R. Ferrin Jr. and R. Orduff (eds.).  Ecology, conservation, and management of vernal pool ecosystems − proceedings from a 1996 conference.  California Native Plant Society, Sacramento, CA.
• Hill, R.E., D.C. Rogers, B.D. Quelvog & S.P. Gallagher. 1997.  New records and observations on the Anostracan genus Eubranchipus in California.  Hydrobiologia 359: 75-81.
• Rogers, D.C. 1997.  Aphodius alternatus Horn (Aphodiinae: Scarabaeidae), first record of a semiaquatic scarab beetle.  Pan-Pacific Entomologist 73(2): 135-136.
• Rogers, D.C. 1996.  Eubranchipus bundyi Forbes (Anostraca; Crustacea), a new record from California.  Pan-Pacific Entomologist 72(2): 89-91.