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Hibernation: Eastern box turtles are active from April to November in northern parts of their range, as well as on warm winter days [1,11,27,52,63,65]. Hibernation begins October to November, and emergence from hibernation begins in March [12]. Eastern box turtles do not appear to hibernate in Florida. Several environmental cues have been identified relating to the timing of hibernation. Generally, eastern box turtles hibernate between the last severe autumn frost and the 1st spring frost [35]. One study concluded that they begin emerging from hibernation when ambient temperatures reach 65 °F (18 °C) in spring [17]. Another study suggested that box turtles (T. carolina and T. ornata) emerge from hibernation when subsurface soil temperatures (4-8 inches (10-20 cm) below the soil surface) are at least 45 °F (7 °C) for a minimum of 5 days [41].
Reproduction: Mating occurs May to October in Missouri [65] and has been observed in late November in Florida [22]. Nesting occurs May to July [27,36], with hatching from August to November [27,36,44]. Clutches may contain 1 to 9 eggs with an average of 3.67 to 5 eggs per clutch being typical [13,27,46]. Multiple clutches of eggs may be laid in a single year [79]. Eastern box turtle nests are roughly as deep as the female can reach with her hind legs, approximately 2 to 4 inches (6-10 cm). Eggs are laid primarily during rainy and overcast weather [18]. Incubation lasts 60 to103 days [17,18,36]. Males primarily develop at cooler temperatures while females predominantly develop at higher temperatures [44].
PREFERRED HABITAT:High humidity seems to be one of the most important factors in habitat selection. Mean relative humidity in eastern box turtle habitat in Arkansas was above 80%. Average total ground cover around forms (shallow depressions dug by eastern box turtles) was 40.27%, while the litter averaged 54.34% cover and a depth of 1.41 inches (3.57 cm). Average grass cover at the forms was 12.16%, forb cover was 14.32%, and shrub cover averaged 8.81%. Average canopy cover above forms was 56.05% with an average canopy height of 36.65 feet (11.17 m) [63]. The undergrowth in a Maryland forest was littered with heaps of woody debris, fallen branches, logs, and stumps [72].
Forests provide cool areas and high humidity during the heat of the summer [63]. The most preferred forest habitats were those with the most moisture and highest diversity [52]. In Mississippi, eastern box turtles were found in habitats characterized by gently rolling hills dissected by intermittent and perennial streams [60]. Box turtles (Terrapene spp.) seem to avoid ridges where moisture is low and generally avoid steep hillsides and embankments [24]. Eastern box turtles may use virtually any habitat during rainy weather [13], and they are most active after rain showers [58].
In addition to humid environments, eastern box turtles utilize open water extensively. Eastern box turtles swim across streams and other bodies of water [71,76]. Eastern box turtles are also known to spend hours or days soaking in puddles, lakes, streams, and wet gullies [1,24,71]. In Tennessee, they utilized temporary ponds during periods of high temperature and low precipitation [31]. Eastern box turtles, especially juveniles, may dry out and perish during long periods of drought [1]. Neonates may congregate in open water or seek shade after hatching to avoid dehydration and heat stress [1,11].
Elevation: In a review, Dodd [27] notes that eastern box turtles in New England are common from sea level up to 490 feet (150 m) in elevation, and rare to 705 feet (215 m). In the southern Appalachians, eastern box turtles are common from sea level to 4,300 feet (1,300 m) but rare at higher elevations [27]. Wilson and Friddle [80] noted that eastern box turtles are common in valleys below 1,000 feet (300 m) in elevation, but are rare on ridges above 2,000 feet (600 m) in West Virginia.
Density/Home Range: Average densities of eastern box turtle populations can vary widely and may reflect differences in habitat quality and other environmental factors. For instance, in Indiana, density estimates were 2.7 to 5.7 eastern box turtles/ha [78]. A density estimate in a Virginia population was considerably higher at 35 eastern box turtles/ha [79]. In Missouri, eastern box turtles had an average density of 7.3 to 10.9/acre (18.1-27.0/ha) [66]. In Maryland, an average of 4.1 to 5.9/acre was found (1.7-2.4/ha) [43,71]. In Tennessee, there were 12.3 eastern box turtles/acre (5.0/ha) on average [30]. An eastern box turtle population in Florida had an estimated density of 14.9 to 16.3 adults/ha [25,62].
Eastern box turtles do not appear to be territorial because they are commonly found grouped together under cover or in close proximity to each other. Eastern box turtles occupy the same home range year after year. However, females may leave their home ranges to lay eggs [71]. Home ranges of eastern box turtles in Missouri averaged 3.6 acres (1.5 ha) for females and 3.8 acres (1.5 ha) for males [65]. Average home ranges over a 19-year period in Missouri were 12.7 acres (5.1 ha) for females and 12.9 acres (5.2 ha) for males at the same location [66]. Home ranges in New York may average 4.35 to 17.20 acres (1.76-6.96 ha) [52]. Home range size of eastern box turtles in Virginia averaged 19.5 acres (7.9 ha) [79]. On average, home ranges of eastern box turtles ranged between 4.65 acres (1.88 ha) and 5.58 acres (2.26 ha) in Tennessee [31].
COVER REQUIREMENTS:The most important habitat features for hibernating eastern box turtles include cavities or natural depressions (such as stump holes and other hollows) filled with deep litter, as well as soft soils, thick brush, and woody debris [12,14,24,73]. Some eastern box turtles overwinter in depressions along gully bottoms and hillsides [12]. As winter gets progressively colder, eastern box turtles dig deeper into litter and soil to gain more protection from cold [12]. Snow cover helps insulate hibernating turtles [1]. In rare circumstances, eastern box turtles successfully hibernate while submerged in a stream or pond [11,44]. Eastern box turtles may also utilize burrows dug by other wildlife [34]. Juveniles that hatch late in the season may overwinter in the nest [52]. Multiple eastern box turtles are occasionally found overwintering in the same location [12].
FOOD HABITS:Plant materials eaten by eastern box turtles include leaves, berries, roots, flower buds, and seeds [10,23,48,71,74]. Eastern box turtles have been observed eating half-flower (Scaevola taccaca) berries, cactus (Cactaceae) fruits, and seagrape (Coccoloba uvifera) in Florida [23]. Eastern box turtles consume and disperse seeds of pond-apple (Annona glabra), Florida silver palm (Coccothrinax argentata), fig (Ficus spp.), redgal, (Morinda umbellata), sapodilla (Manilkara zapoda), crowngrass (Paspalum spp.), mangroveberry (Psidium longipes), Everglades greenbrier (Smilax coriacea), Key thatch palm (Thrinax morrisii), saw palmetto (Serenoa repens), and Long Key locustberry (Byrsonima lucida) [51]. They may also consume and disperser seeds of jack-in-the-pulpit (Arisaema spp.), mayapple (Podophyllum petatum), black cherry (Prunus serotina), summer grape (Vitis aestivalis), common elderberry (Sambucus nigra ssp. canadensis), black huckleberry (Gaylussacia baccata), blue ridge blueberry (Vaccinium vacillans), white mulberry (Morus alba), American pokeweed (Phytolacca americana), Indian strawberry (Duchesnea indica), Virginia strawberry (Fragaria virginiana), blackberry (Rubus spp.), muscadine grape (V. rotundifolia), and frost grape (V. vulpina) [8]. Other vegetative foods of eastern box turtles include fox grape (V. labrusca), cherry (Prunus spp.), pear (Pyrus spp.,) sweetroot (Osmorhiza spp.), American wintergreen (Pyrola americana), groundcherry (Physalis spp.), grasses, and mosses [8,48,71,74].
PREDATORS:The shells of young box turtles are not strongly ossified until they reach several years of age, making them vulnerable to predators [26]. Hatchling box turtles may fall prey to shrews, birds, eastern chipmunks (Tamias striatus), bullfrogs (Rana catesbeiana), and snakes [4,44,53]. Copperheads (Agkistrodon contortrix), cottonmouths (Agkistrodon piscivorus), eastern racers (Coluber constrictor), and other snakes may swallow young eastern box turtles whole [35,47,56].
Eastern box turtle eggs are preyed upon by snakes such as scarletsnakes (Cemophora coccinea), hog-nosed snakes (Heterodon spp.), common kingsnakes (Lampropeltis getula), pinesnakes (Pituophis melanoleucus), and eastern ratsnakes (Elaphe obsoleta), as well as ants and other invertebrates [2,35,58].
MANAGEMENT CONSIDERATIONS:Ernst and others [34] suggested that eastern box turtles occupying burrows likely escape fire completely. However, some eastern box turtles that died in an apparent wildfire in Florida were found in burrows [3]. Hatchling and juvenile eastern box turtles appear to hide under litter, which exposes them to fire, rather than burrowing or creating forms[34].
Eastern box turtles appear incapable of escaping advancing fires, so they are frequently found with burn scars [3,13,34]. Many eastern box turtles that survive fire while in their forms are badly burned, often with extensive damage to the shell [3,34]. Eastern box turtles can regenerate part to all of damaged or burned shells [64,68]. The ability of eastern box turtles to regenerate their shells after being burned is possibly an adaptation for survival in fire-prone environments [68].
HABITAT-RELATED FIRE EFFECTS:Fire regimes: The following table provides fire return intervals for plant communities and ecosystems where the eastern box turtle is important. Find fire regime information for the plant communities in which this species may occur by entering the species name in the FEIS home page under "Find Fire Regimes".
Community or ecosystem | Dominant species | Fire return interval range (years) |
maple-beech | Acer-Fagus spp. | 684-1,385 [16,77] |
silver maple-American elm | Acer saccharinum-Ulmus americana | <5 to 200 |
sugar maple | Acer saccharum | >1,000 [77] |
bluestem prairie | Andropogon gerardii var. gerardii-Schizachyrium scoparium | <10 [49,59] |
bluestem-Sacahuista prairie | Andropogon littoralis-Spartina spartinae | <10 [59] |
birch | Betula spp. | 80-230 [75] |
sugarberry-America elm-green ash | Celtis laevigata-Ulmus americana-Fraxinus pennsylvanica | <35 to 200 |
Atlantic white-cedar | Chamaecyparis thyoides | 35 to >200 |
beech-sugar maple | Fagus spp.-Acer saccharum | >1,000 |
black ash | Fraxinus nigra | <35 to 200 [77] |
green ash | Fraxinus pennsylvanica | <35 to >300 [33,77] |
cedar glades | Juniperus virginiana | 3-22 [42,59] |
yellow-poplar | Liriodendron tulipifera | <35 |
shortleaf pine | Pinus echinata | 2-15 |
shortleaf pine-oak | Pinus echinata-Quercus spp. | <10 |
slash pine | Pinus elliottii | 3-8 |
slash pine-hardwood | Pinus elliottii-variable | <35 |
sand pine | Pinus elliottii var. elliottii | 25-45 [77] |
South Florida slash pine | Pinus elliottii var. densa | 1-15 [57,69,77] |
longleaf-slash pine | Pinus palustris-P. elliottii | 1-4 [57,77] |
longleaf pine-scrub oak | Pinus palustris-Quercus spp. | 6-10 |
Table Mountain pine | Pinus pungens | <35 to 200 [77] |
pitch pine | Pinus rigida | 6-25 [9,45] |
pocosin | Pinus serotina | 3-8 |
pond pine | Pinus serotina | 3-8 [77] |
eastern white pine | Pinus strobus | 35-200 [75,77] |
eastern white pine-northern red oak-red maple | Pinus strobus-Quercus rubra-Acer rubrum | 35-200 |
loblolly pine | Pinus taeda | 3-8 |
loblolly-shortleaf pine | Pinus taeda-P. echinata | 10 to <35 |
Virginia pine | Pinus virginiana | 10 to <35 |
Virginia pine-oak | Pinus virginiana-Quercus spp. | 10 to <35 |
sycamore-sweetgum-American elm | Platanus occidentalis-Liquidambar styraciflua-Ulmus americana | <35 to 200 [77] |
eastern cottonwood | Populus deltoides | <35 to 200 [59] |
quaking aspen-paper birch | Populus tremuloides-Betula papyrifera | 35-200 [32,77] |
black cherry-sugar maple | Prunus serotina-Acer saccharum | >1,000 |
oak-hickory | Quercus-Carya spp. | <35 |
northeastern oak-pine | Quercus-Pinus spp. | 10 to <35 [77] |
oak-gum-cypress | Quercus-Nyssa spp.-Taxodium distichum | 35 to >200 [57] |
southeastern oak-pine | Quercus-Pinus spp. | <10 |
white oak-black oak-northern red oak | Quercus alba-Q. velutina-Q. rubra | <35 |
northern pin oak | Quercus ellipsoidalis | <35 |
bear oak | Quercus ilicifolia | <35 |
bur oak | Quercus macrocarpa | <10 [77] |
oak savanna | Quercus macrocarpa/Andropogon gerardii-Schizachyrium scoparium | 2-14 [59,77] |
chestnut oak | Quercus prinus | 3-8 [77] |
northern red oak | Quercus rubra | 10 to <35 [77] |
post oak-blackjack oak | Quercus stellata-Q. marilandica | <10 |
black oak | Quercus velutina | <35 |
live oak | Quercus virginiana | 10 to<100 [77] |
cabbage palmetto-slash pine | Sabal palmetto-Pinus elliottii | <10 [57,77] |
blackland prairie | Schizachyrium scoparium-Nassella leucotricha | <10 |
Fayette prairie | Schizachyrium scoparium-Buchloe dactyloides | <10 [77] |
eastern hemlock-yellow birch | Tsuga canadensis-Betula alleghaniensis | 100-240 [75,77] |
High-severity fires that kill trees and scorch canopies would likely be detrimental to eastern box turtles since they favor forests [6,12,17,19,31,52,54,60,63,65,70,71]. The removal of the litter layer by fire could also be detrimental because litter is used extensively for cover throughout the year [12,38,63]. The adverse affects of removing litter from the forest floor early in the year would probably be short-term if the leaves in the canopy fell later in the year. However, an autumn fire occurring after most leaves have fallen would have more severe effects on eastern box turtles since a deep litter layer is crucial during hibernation [12,14,24,73]. Timing of fire may be less of a problem in Florida since eastern box turtles typically do not hibernate in that location [35]. More research is needed to address these possibilities.
Research on the effects of fire on eastern box turtle populations and habitat is lacking. Concern for the eastern box turtle already exists over populations that have been isolated through habitat fragmentation [21]. More research is needed to determine if fire in these habitat fragments would be detrimental to the isolated eastern box turtle populations.1. Allard, H. A. 1948. The eastern box-turtle and its behavior. Journal of the Tennessee Academy of Science. 23: 307-321. [62038]
2. Allard, H. A. 1949. The eastern box-turtle and its behavior. Journal of the Tennessee Academy of Science. 24(2): 146-152. [61841]
3. Babbitt, Lewis H.; Babbitt, Corinne H. 1951. A herpetological study of burned-over areas in Dade County, Florida. Copeia. 1: 79. [34389]
4. Belzer, William R.; Seibert, Susan; Atkinson, Benjamin. 2002. Putative chipmunk predation of juvenile eastern box turtles. Turtle and Tortoise Newsletter. 5: 8-9. [62376]
5. Bernard, Stephen R.; Brown, Kenneth F. 1977. Distribution of mammals, reptiles, and amphibians by BLM physiographic regions and A.W. Kuchler's associations for the eleven western states. Tech. Note 301. Denver, CO: U.S. Department of the Interior, Bureau of Land Management. 169 p. [434]
6. Bigham, Sam R.; Hepworth, J. Leland; Martin, Richard P. 1964. A casualty count of wildlife following a fire. Proceedings of the Oklahoma Academy of Science. 45: 47-50. [13539]
7. Black, Jeffrey Howard. 1975. Tadpole eating by the three-toed box turtle. Chelonia. 2(6): 5. [62375]
8. Braun, Joanne; Brooks, Barnett R., Jr. 1987. Box turtles (Terrapene carolina) as potential agents for seed dispersal. American Midland Naturalist. 117(2): 312-318. [61842]
9. Buchholz, Kenneth; Good, Ralph E. 1982. Density, age structure, biomass and net annual aboveground productivity of dwarfed Pinus rigida Moll. from the New Jersey Pine Barren Plains. Bulletin of the Torrey Botanical Club. 109(1): 24-34. [8639]
10. Bush, Francis M. 1959. Foods of some Kentucky herptiles. Herpetologica. 15(2): 73-77. [61843]
11. Cahn, Alvin R. 1933. Hibernation of the box turtle. Copeia. 1933(1): 13-14. [62152]
12. Carpenter, Charles C. 1957. Hibernation, hibernacula and associated behavior of the three-toed box turtle (Terrapene carolina triunguis). Copeia. 1957(4): 278-282. [61844]
13. Carr, Archie. 1952. Genus Terrapene: The box turtles. In: Handbook of turtles: The turtles of the United States, Canada, and Baja California. Ithaca, NY: Cornell University Press: 137-162. [62360]
14. Carr, John L.; Houseal, Timothy W. 1981. Post-hibernation behavior in Terrapene carolina triunguis (Emydidae). The Southwestern Naturalist. 26(2): 199-200. [62151]
15. Claussen, Dennis L.; Daniel, Paul M.; Jiang, Suping; Adams, Nadine A. 1991. Hibernation in the eastern box turtle, Terrapene c. carolina. Journal of Herpetology. 25(3): 334-341. [61845]
16. Cleland, David T.; Crow, Thomas R.; Saunders, Sari C.; Dickmann, Donald I.; Maclean, Ann L.; Jordan, James K.; Watson, Richard L.; Sloan, Alyssa M.; Brosofske, Kimberley D. 2004. Characterizing historical and modern fire regimes in Michigan (USA): a landscape ecosystem approach. Landscape Ecology. 19: 311-325. [54326]
17. Collins, Joseph T. 1993. [3rd ed., revised] Eastern box turtle: Terrapene carolina (Linnaeus). In: Collins, Joseph T., ed. Amphibians and Reptiles in Kansas. University of Kansas, Museum of Natural History, Public Education Series No. 13. Lawrence, KS: University of Kansas, Museum of Natural History: 129-131. [61848]
18. Congello, Karin. 1978. Nesting and egg laying behavior in Terrapene carolina. Proceedings of the Pennsylvania Academy of Science. 52(1): 51-56. [61847]
19. Cook, Robert P. 2004. Dispersal, home range establishment, survival, and reproduction of translocated eastern box turtles, Terrapene c. carolina. Applied Herpetology. 1: 197-228. [62379]
20. Crother, Brian I. 2000. Scientific and standard English names of amphibians and reptiles of North America north of Mexico, with comments regarding confidence in our understanding. Herpetological Circular No. 29. [Place of publication unknown]: Society for the Study of Amphibians and Reptiles. 82 p. [54172]
21. Dodd, C. Kenneth, Jr. 2001. Conservation Biology. In: North American box turtles: a natural history. Animal natural history series, vol. 6. Norman, OK: University of Oklahoma Press: 150-168. [62416]
22. Dodd, C. Kenneth, Jr. 2001. Courtship and reproduction. In: North American box turtles: a natural history. Animal natural history series, vol. 6. Norman, OK: University of Oklahoma Press: 87-110. [62158]
23. Dodd, C. Kenneth, Jr. 2001. Food and feeding behavior. In: North American box turtles: a natural history. Animal natural history series, vol. 6. Norman, OK: University of Oklahoma Press: 111-121. [62160]
24. Dodd, C. Kenneth, Jr. 2001. Habitats and habitat requirements. In: North American box turtles: a natural history. Animal natural history series, vol. 6. Norman, OK: University of Oklahoma Press: 39-55. [62157]
25. Dodd, C. Kenneth, Jr. 2001. Population structure and demography. In: North American box turtles: a natural history. Animal natural history series, vol. 6. Norman, OK: University of Oklahoma Press: 122-137. [62162]
26. Dodd, C. Kenneth, Jr. 2001. Predators, parasites, and disease. In: North American box turtles: a natural history. Animal natural history series, vol. 6. Norman, OK: University of Oklahoma Press: 138-149. [62163]
27. Dodd, C. Kenneth, Jr. 2001. Species accounts: Box turtle, genus Terrapene Merrem, 1820. In: North American box turtles: a natural history. Animal natural history series, vol. 6. Norman, OK: University of Oklahoma Press: 173-183. [62156]
28. Dodd, C. Kenneth, Jr.; Franz, Richard; Smith, Lora L. 1994. Activity patterns and habitat use of box turtles (Terrapene carolina bauri) on a Florida island, with recommendations for management. Chelonian Conservation and Biology. 1(2): 97-106. [61846]
29. Dodge, Christopher H.; Dimond, Marie T.; Wunder, Charles C. 1978. Effect of temperature on the incubation time of eggs of the eastern box turtle (Terrapene carolina carolina Linne). In: Proceedings of the Florida and interregional conference on sea turtles; 1976 July 24-25; Jensen Beach, FL. Florida Marine Research Publications. No. 33. St. Petersburg, FL: Florida Department of Natural Resources, Marine Research Laboratory: 8-11. [61851]
30. Dolbeer, Richard A. 1969. Population density and home range size of the eastern box turtle (Terrapene c. carolina) in eastern Tennessee. ASB Bulletin. 16(2): 49. [61852]
31. Donaldson, Bridget M.; Echternacht, Arthur C. 2005. Aquatic habitat use relative to home range and seasonal movement of eastern box turtles (Terrapene carolina carolina: Emydidae) in eastern Tennessee. Journal of Herpetology. 39(2): 278-284. [62380]
32. Duchesne, Luc C.; Hawkes, Brad C. 2000. Fire in northern ecosystems. In: Brown, James K.; Smith, Jane Kapler, eds. Wildland fire in ecosystems: Effects of fire on flora. Gen. Tech. Rep. RMRS-GTR-42-vol. 2. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station: 35-51. [36982]
33. Eggler, Willis A. 1980. Live oak. In: Eyre, F. H., ed. Forest cover types of the United States and Canada. Washington, DC: Society of American Foresters: 63-64. [49984]
34. Ernst, Carl H.; Boucher, Timothy P.; Sekscienski, Steven W.; Wilgenbusch, James C. 1995. Fire ecology of the Florida box turtle, Terrapene carolina bauri. Herpetological Review. 26(4): 185-187. [61853]
35. Ernst, Carl H.; Lovich, Jeffrey E.; Barbour, Roger W. 1994. Terrapene carolina (Linnaeus, 1758): Eastern box turtle. In: Turtles of the United States and Canada. Washington, DC: Smithsonian Institution Press.: 250-265. [62154]
36. Ewing, H. E. 1933. Reproduction in the eastern box-turtle Terrapene carolina carolina (Linne). Copeia. 1933(2): 95-96. [62374]
37. Eyre, F. H., ed. 1980. Forest cover types of the United States and Canada. Washington, DC: Society of American Foresters. 148 p. [905]
38. Forsythe, Patrick; Flitz, Beth; Mullin, Stephen J. 2004. Radio telemetry and post-emergent habitat selection of neonate box turtles (Emydidae: Terrapene carolina) in central Illinois. Herpetological Review. 35(4): 333-335. [62371]
39. Frese, Paul W. 2003. Tallgrass prairie amphibian and reptile assemblage. Fire mortality. Herpetological Review. 34(2): 159-160. [61854]
40. Garrison, George A.; Bjugstad, Ardell J.; Duncan, Don A.; Lewis, Mont E.; Smith, Dixie R. 1977. Vegetation and environmental features of forest and range ecosystems. Agric. Handb. 475. Washington, DC: U.S. Department of Agriculture, Forest Service. 68 p. [998]
41. Grobman, Arnold B. 1990. The effect of soil temperatures on emergence from hibernation of Terrapene carolina and T. ornata. The American Midland Naturalist. 124(2): 366-371. [62373]
42. Guyette, Richard; McGinnes, E. A., Jr. 1982. Fire history of an Ozark glade in Missouri. Transactions, Missouri Academy of Science. 16: 85-93. [5170]
43. Hall, Russell J.; Henry, Paula F. P.; Bunck, Christine M. 1999. Fifty-year trends in a box turtle population in Maryland. Biological Conservation. 88: 165-172. [62378]
44. Harding, James H. 1997. Eastern box turtle: Terrapene carolina carolina. In: Douglas, Matthew M., ed. Amphibians and reptiles of the Great Lakes Region. Ann Arbor, MI: University of Michigan Press: 194-201. [61856]
45. Hendrickson, William H. 1972. Perspective on fire and ecosystems in the United States. In: Fire in the environment: Symposium proceedings; 1972 May 1-5; Denver, CO. FS-276. [Washington, DC]: U.S. Department of Agriculture, Forest Service: 29-33. In cooperation with: Fire Services of Canada, Mexico, and the United States; Members of the Fire Management Study Group; North American Forestry Commission; FAO. [17276]
46. Klemens, Michael W. 1993. Terrapene c. carolina: Eastern box turtle. In: Amphibians and reptiles of Connecticut and adjacent regions. Bulletin No. 112. Hartford, CT: Connecticut Department of Environmental Protection, State Geological and Natural History Survey of Connecticut: 189-199. [62122]
47. Klimstra, W. D. 1959. Food habits of the cottonmouth in southern Illinois. Natural History Miscellanea. Chicago, IL: The Chicago Academy of Sciences. 168: 1-8. [61579]
48. Klimstra, W. D.; Newsome, Frances. 1960. Some observations on the food coactions of the common box turtle, Terrapene c. carolina. Ecology. 41(4): 639-647. [62372]
49. Kucera, Clair L. 1981. Grasslands and fire. In: Mooney, H. A.; Bonnicksen, T. M.; Christensen, N. L.; Lotan, J. E.; Reiners, W. A., tech. coords. Fire regimes and ecosystem properties: Proceedings of the conference; 1978 December 11-15; Honolulu, HI. Gen. Tech. Rep. WO-26. Washington, DC: U.S. Department of Agriculture, Forest Service: 90-111. [4389]
50. Kuchler, A. W. 1964. Manual to accompany the map of potential vegetation of the conterminous United States. Special Publication No. 36. New York: American Geographical Society. 77 p. [1384]
51. Liu, Hong; Platt, Steven G.; Borg, Christopher K. 2004. Seed dispersal by the Florida box turtle (Terrapene carolina bauri) in pine rockland forests of the lower Florida Keys, United States. Oecologia. 138(4): 539-546. [47467]
52. Madden, Robert Carson. 1975. Home range, movements, and orientation in the eastern box turtle, Terrapene carolina carolina. New York, NY: The City University of New York. 217 p. Dissertation. [61185]
53. McCoy, C. J. 1969. Diet of bullfrogs (Rana catesbeiana) in central Oklahoma farm ponds. In: Moore, George A., ed. 56th annual meeting; 1967 December 1-2; Oklahoma City, OK. Vol. 48. Stillwater, OK: Oklahoma State University, Oklahoma Academy of Science: 44-45. [62377]
54. McLeod, Roderick F.; Gates, J. Edward. 1998. Response of herpetofaunal communities to forest cutting and burning at Chesapeake Farms, Maryland. The American Midland Naturalist. 139: 164-177. [27869]
55. Minton, Sherman A., Jr. 1972. Eastern box turtle: Terrapene carolina carolina (Linnaeus). In: Amphibians and reptiles of Indiana. Indianapolis, IN: The Indiana Academy of Science: 161-166. [62153]
56. Murphy, Ted D. 1964. Box turtle, Terrapene carolina, in stomach of copperhead, Agkistrodon contortrix. Copeia. 1964(1): 221. [62116]
57. Myers, Ronald L. 2000. Fire in tropical and subtropical ecosystems. In: Brown, James K.; Smith, Jane Kapler, eds. Wildland fire in ecosystems: Effects of fire on flora. Gen. Tech. Rep. RMRS-GTR-42-vol. 2. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station: 161-173. [36985]
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