|
|
|
|
|
|
|
|
|
|
Guestbook |
Guestbook |
In Press or Published
| Christiansen, J.L., R.M. Bailey, and J. Parmelee | About 2008 | The Amphibians and Reptiles of Iowa (Book expected to be about 550pp) | In final preparation and review and by publisher. |
| Christiansen, D. Kangas, J.L., J. Briggler and C. Phillips. | Submit 2007 | Continued Decline in Populations of Illinois Mud Turtles, an Endangered Species. | Expect to submit to Herpetological Review in fall 2007 |
| Christiansen, J.L. and N.P. Bernstein. | 2007 | Response of a Turtle Community to Disturbance: Management Implications for Kinosternon flavescens spooneri. | Submitted to Herpetological Review October 2007. |
| VanDeWalle, T. and J.L. Christiansen | Submit 2007 | Reproduction In the eastern Massasauga, Sistrurus catenatus catenatus, in Iowa. | Expect submission in October 2007. |
| Christiansen, J.L. and E. Jacobson. | 2007 | Sistrurus catenatus catenatus (Eastern Massasauga). Leiomyoma. | Submitted to Herpetological Review June 2007. |
| Johnson J.C., S.A. Nettikadan, S.G. Vengasandra, S. Lovan, J. Muys, E. Henderson, and J. L. Christiansen. | 2005 | Characterization of Testudine Melanomacrophages Linear, Membrane Extension Processes - Cablepodia - by Phase and Atomic Force Microscopy. | VitroCell. Dev. Biol.-Animal. 41:225-231. |
| Christiansen, J.L., Paul W. Frese, and Jeffrey Parmelee. | 2005 | Status of The Timber Rattlesnake. | "Iowa" chapter. In Press. |
| Christiansen, J.L. Tyler Schwiesow, and J.C. Johnson. | 2005 | A refined method for culturing reptilian cells with comments on aggregations of reptilian melanomacrophages. | Herpetological Review. 36(3):279-281. |
| Christiansen, J.L., J.M. Grzybowski, and B.P. Rinner | 2005 | Facial Cysts in Turtles, Observations on Incidence, Reoccurrance, and Possible Multiple Origins. | J. Herpetology, 39(2):293-298. |
| Christiansen J.L. and J.R. Parmelee J.E. | 2003 | A key to the Eggs and Nests of Iowa's Turtles. | J. of Iowa Academy Science. 110:44-50. |
| Christiansen J.L. and J. Leclere | 2002 | Nerodia erithrogaster neglecta in Iowa with comments on ontogenesis of color and pattern. | Herpetological Review. 33(2):152-154. |
| J.L. Christiansen. | 2001 | Non-Native Amphibians and Reptiles in Iowa. In Symposium on Invasive Species. | J. Iowa Acad. Sci. 108(4):201-211 |
| Oberfoell, C.M. and J.L. Christiansen. | 2001 | Identification and Distribution of the Gray treefrogs Hyla versicolor and Hyla chrysoscelis in Iowa. | J. Ia. Acad. Sci. 108(1) 7 pp. |
| Christiansen, J.L. and T. VanDeWalle. | 2000 | Effectiveness of three trap types in drift fence surveys. | Herpetological Review., December 2000. |
| Christiansen, J. L. and H. A. Feltman. | 2000 | A relationship between trematode metacercaria and frog limb abnormalities. Declining Amphibian Symposium Issue, | J. Ia Acad Sci. 107(3): |
| Christiansen, J.L. and J. G. Grzybowski. | 1999 | The Biology of Aging, an Introduction to the Medical Problems of Later Life. 2000 edition. | McGraw-Hill. 400pp. |
| Johnson, J.C., T.Schwiesow, A.K. Ekwall, and J.L.Christiansen. | 1999 | Reptilian Melanomacrophages function under conditions of hypothermia; observations on phagocytic behavior. | Pigment Cell Research. 10(4). |
| Sutton, C.K. and J.L. Christiansen | 1999 | . The habitat and distribution of the stinkpot, Sternotherus odoratus, in Iowa. | J. Iowa Acad. Sci. 106(3):63-65. |
| Rund, C.R., J.L. Christiansen, and J.C. Johnson. | 1998 | In vitro culture of melanomacrophages from the spleen and liver of turtles; comments on melanomacrophage morphology. | Pigment Cell Research 11:114-119. |
| Christiansen, J.L. | 1998 | Perspectives on Iowa's Amphibians and Reptiles. | J. Iowa Acad. Sci. 105(3):109-114. |
| Christiansen, J. L. and R. M. Bailey. | 1997 | The Lizards and Turtles of Iowa. | Iowa DNR, Nongame Technical Series (3):1-20. Revised May 1977 |
| Christiansen, J. L., J. M. Grzybowski, and R. O. Kodama. | 1996 | Melanomacrophage Aggregations and their age relationships in the yellow mud turtle, Kinosternon flavescens (Kinosternidae). | Pigment Cell Research 9(4):1-6. |
| VanDeWalle, T. and J. L. Christiansen. | 1996 | A relationship between river modification and species richness of fresh water turtles in Iowa. | J. Iowa Acad. Sci. 103(1-2):1-8. |
| VanDeWalle, T, C.. Sutton, and J.L. Christiansen. | 1996 | Pseudacris crucifer : an Iowa case history study of an amphibian call survey. | Herpetological Review 27(4):183-185. |
| Bailey, R. M. and J. L. Christiansen. | 1993 | The early history and recent trends in Iowa Herpetology. | J. Iowa Acad. Sci. 100(3):83-86. |
| Christiansen, J. and J. Fieselmann. | 1993 | Massasauga Rattlesnake Bites in Iowa. | Iowa Medicine 1993:187-191. |
| Christiansen, J.L. and Grzybowski, J.M. | 1992 | The Biology of Aging, (a Biomedical Approach), | Mosby,.400pp. |
| Mabry, C. M. and J. L. Christiansen. | 1991 | The activity and breeding cycle of Scaphiopus bombifrons in Iowa. | J. Herpetology. 25(1):116-119. |
| Christiansen, J. L. and R. M. Bailey. | 1991 | The salamanders and frogs of Iowa. | The Iowa Department of Natural Resources, Nongame Tech. Series (4): 1-21. |
| Christiansen, J. L. and R. M. Bailey. | 1990 | The snakes of Iowa (revised). | The Iowa Department of Natural Resources, Nongame Tech. Series.(1):1-16. |
| Christiansen, J.L., B.J. Gallaway, and J.W. Bickham. | 1990. | Population estimates and geographic distribution of the yellow mud turtle (Kinosternon flavescens) in Iowa. | J. Iowa Acad. Sci. 97(3):105-109. |
| Christiansen, J. L. and B. J. Gallaway. | 1989 | Possible historic effects of pond drying and winterkill on the behavior of Kinosternon flavescens and Chrysemys picta. | Journal Herpetology 23(1):91-94. |
| Christiansen, J. L. and R. M. Bailey. | 1988 | The Lizards and Turtles of Iowa. | The Iowa Department of Natural Resources. Special Publ. December. 20 19 pp. |
| Christiansen, J. L. | 1986 | The Snakes of Iowa. | Special Publ. Iowa Conservation Commission 1986: 1-15. |
| Christiansen, J.L. and C.M. Mabry. | 1985 | The amphibians and reptiles of Iowa's Loess Hills. | Proc. Ia. Acad. Sci. 92(5):159-163. |
| Christiansen, J.L. and J.A. Cooper, J.W. Bickham, B.J. Galloway, and M.D. Springer. | 1984 | Aspects of the natural history of the yellow mud turtle (Kinosternon flavescens) in Iowa: A proposed endangered species. | Southwestern Naturalist 30(3):413-425. |
| Christiansen, J.L. and B.J. Galloway. | 1984 | Raccoon removal, nesting success, and hatchlings in Iowa turtles with special reference to Kinosternon flavescens. | Southwestern Naturalist 29(3):343-348. |
| Christiansen, J.L., J.A. Cooper, and J. Bickham. | 1984 | Reproduction of Kinosternon flavescens in Iowa. | Southwestern Naturalist 29(3):349-351. |
| Wacha, R.S. and J.L. Christiansen. | 1982 | Development of Caryospora bigentica N. sp. (Acomplexa, Eimeriidae) in rattlesnakes and laboratory mice. | J. Protozoology 29(2):272-276. |
| Bowles, J., J.L. Christiansen, D. Lampe, and P. Meglitsch. | 1982 | Iowa's Wildlife. | Chapter in Iowa's Natural Heritage, pp. 250-265. |
| Williams, T.A. and J.L. Christiansen. | 1981 | The Niches of Two Sympatric Softshell Turtles, Trionyx muticus and T. spiniferus in Iowa. | J. Herpetology, 15(3):303-308. |
| Christiansen, J.L. and R.R. Burken. | 1979 | Growth and maturity of the snapping turtle (Chelydra serpentina) in Iowa. | Herpetologica 35(3):251-166. |
| Wacha, R.S. and J.L. Christiansen. | 1979 | Eimeria filamentifera sp. n. from the Snapping Turtle Chelydra serpentina (Linne) in Iowa. | J. Protozool. 26(3):353-354. |
| Christiansen, J.L. and R.R. Burken. | 1978 | The endangered and uncommon amphibians and reptiles of Iowa. Special Edition, | Iowa Science Teachers Journal (sponsored and funded by Iowa Conservation Commission) |
| Christiansen, J.L. and R.C. Sanz. | 1978 | A notable range extension for the Plains Pocket Mouse Perognathus flavescens perniger Osgood, in Iowa. | Proc. Iowa Acad. Sci. |
| Wacha, R.S. and J.L. Christiansen. | 1977 | Additional notes on the coccidian parasites of the soft shell turtle Trionyx spiniferus LeSueur, with a description of Eimeria vesicosteida sp. m. | J. Protozoology, 24(3):357-359. |
| Wacha, R.S. and J.L. Christiansen. | 1976 | Coccidian Parasites from Iowa Turtles: Sytematics and Prevalence. | J. Protozoology, 23(1):57-63. |
| Johnson, B.K. and J.L. Christiansen. | 1976 | The Food and Food Habits of Blanchard's Cricket Frog, Acris crepitans blancharidi (Amphibia, Anura, Hylidae). | J. Herpetology, 10(2):63-74. |
| Wacha, R.S. and J.L. Christiansen. | 1975 | Two New Eimerians from Colubrid Snakes in Iowa. | J. Protozool., 22(4):453-454. |
| Wacha, R.S. and J.L. Christiansen. | 1974 | Systematics of the Eimerian Parasites from North American Snakes of the Family Colubridae and their prevalence in the Colubrids of Iowa. | J. Protozoology, 21(4):483-489. |
| Wacha, R.S. and J.L. Christiansen. | 1974 | Eimeria megalostedaie sp.n. (Protozoa:Eimeriidae) from the wood turtle Clemmys insculpata in Iowa. | Proc. Helmenth. Soc. Wash., 41(1):35-37. |
| Degenhardt, W.G. and J.L. Christiansen. | 1974 | Distribution and habitats of the turtles of New Mexico. | Southwestern Naturalist, 19(1):21-46. |
| Christiansen, J.L. | 1973 | The Distribution and Variation of the Western Earth Snake Virginia valeriae elegans (Kennicott) in Iowa. | Proc. Iowa Acad. Sci., 80:167-170. |
| Christiansen, J.L. | 1973 | Natural and artificially induced oviducal and ovarian growth in two species of Cnemidophorus (Sauria:Teiidae). | Herpetologica, 29(3):195-204. |
| Christiansen, J.L. and E.O. Moll. | 1973 | Latitudinal reproductive variation within a single subspecies of painted turtle, Chrysemys picta belli. | Herpetologica, 29(2):152-163. |
| Christiansen, J.L. and A.E. Dunham. | 1972 | Reproduction of the yellow mud turtle (Kinosternon flavescens flavescens) in New Mexico. | Herpetologica, 23(2):130-137. |
| Christiansen, J.L. and A.J. Quinn. | 1972 | The relationship between pond bottom type and growth rate of western painted turtles Chrysemys picta belli in Iowa, a preliminary report. | Iowa Acad. Sci., 73(3-4):67-69. |
| Christiansen, J.L. | 1971 | Reproduction of Cnemidophorus inornatus and C. neomexicanus in northern New Mexico. | American Museum Novitates, (2442):48. |
| Christiansen, J.L., W.G. Degenhardt, and J.E. White. | 1971 | Habitat preferences of Cnemidophorus inornatus and C. neomexicanus with special reference to conditions contributing to their hybridization. | Copeia, (2):357-359. |
| Christiansen, J.L. | 1969. | Notes on hibernation in Cnemidophorus inorantus and C. neomexicanus (Sauria:Teiidae). | J. of Herpetology, 3(1-2):99-100. |
| Christiansen, J.L. and W.G. Degenhardt. | 1969 | An unusual individual of Cnemidophorus gularis (Sauria:Teiidae) from New Mexico. | Texas J. Sci., 21(1):95-97. |
| Christiansen, J.L. and A.J. Ladman. | 1968 | The reproductive morphology of Cnemidophorus neomexicanus and Cnemidophorus inornatus hybrid males. | J. Morph., 125(3):367-378. |
| Christiansen, J.L. | 1968 | Age at sexual maturity and the annual cycle of spermatogenesis in the male lizard, Cnemidophorus inornatus (Squamata:Teiidae). | Anat. Rec., 160(2):163. |
| Christiansen, J.L. | 1962 | A survey of reptiles and amphibians of Buena Vista County, Iowa. | Iowa Acad. Sci., 625-634. |