Movement ecology of adult and juvenile spotted turtles (Clemmys guttata) in a seasonally dynamic environment
Ellery V. Lassiter
A * , Jinelle H. Sperry B and Brett A. DeGregorio C
A Department of Biological Sciences, University of Arkansas, Fayetteville, AR 72701, USA.
B U.S. Army Engineer Research and Development Center, 2902 Newmark Drive, Champaign, IL 61822, USA.
C U.S. Geological Survey, Fish and Wildlife Cooperative Research Unit, University of Arkansas, Fayetteville, AR 72701, USA.
Abstract
Understanding the temporal and spatial scales at which wildlife move is vital for conservation and management. This is especially important for semi-aquatic species that make frequent inter-wetland movements to fulfil life-history requirements.
We aimed to investigate the drivers of movement and space-use of the imperilled spotted turtle (Clemmys guttata), a seasonal wetland specialist, in three large, isolated wetland complexes in Virginia, USA.
We used VHF radio-transmitters to radio-locate adult and juvenile turtles, and estimated movement and space-use during their active and aestivation seasons (March–August). We then used generalised linear mixed models to examine how movement and space-use varied, based on intrinsic turtle characteristics and extrinsic wetland and climatic factors.
We show that, on average, individual spotted turtles used five wetlands per year (range 3–13), and that their inter-wetland movement and movement distance varied seasonally in accordance with wetland availability and breeding phenology. Spotted turtle movement and space-use was influenced by the arrangement and size of the wetland complexes, with turtles moving further and occupying larger home-ranges as size and distance between wetlands increased. Inter-wetland movement was not influenced by intrinsic turtle effects but larger adult turtles moved further, used more wetlands, and had larger home-ranges than smaller turtles.
Turtle responses to variation in season and wetland configuration highlight the need for complex and dynamic landscapes required to sustain this species.
This study has important conservation implications showing that spotted turtles rely on a large number of diverse wetlands, as well as upland habitat, to fulfil their resource needs – and that these habitat associations vary seasonally. Results from our study can aid the understanding of spatial and temporal variation in patch characteristics (e.g. quality and extent) and inter-patch movement by organisms, which is critical for the conservation and management of semi-aquatic species and other organisms that occupy patchy habitat complexes.
Keywords: conservation, home-range, interpatch movement, radio-telemetry, seasonal, space-use, turtle, wetland.
References
Andreassen HP, Hertzberg K, Ims RA (1998) Space-Use responses to habitat fragmentation and connectivity in root vole Microtus oeconomus. Ecology 79, 1223-1235.
| Google Scholar |
Attum O, Lee YM, Roe JH, Kingsbury BA (2008) Wetland complexes and upland–wetland linkages: landscape effects on the distribution of rare and common wetland reptiles. Journal of Zoology 275, 245-251.
| Crossref | Google Scholar |
Barreto L, Neckel-Oliveira S, Ribeiro LES, Garcez RBM, Calvet MCR, Oliveira CC, Zuidam BG, Roessink I, Van Nes EH, Peeters ETHM (2020) Seasonal variation in the population parameters of Kinosternon scorpiodesand trachemys adiutrix, and their association with rainfall in seasonally flooded lakes. Herpetological Conservation and Biology 15, 457-466.
| Google Scholar |
Bates D, Mächler M, Bolker B, Walker S (2015) Fitting linear mixed-effects models using lme4. Journal of Statistical Software 67, 1-48.
| Crossref | Google Scholar |
Beaudry F, deMaynadier PG, Hunter ML (2009) Seasonally dynamic habitat use by spotted (Clemmys guttata) and blanding’s turtles (Emydoidea blandingii) in Maine. Journal of Herpetology 43, 636-645.
| Crossref | Google Scholar |
Beaudry F, DeMaynadier PG, Hunter ML, Jr. (2010) Nesting movements and the use of anthropogenic nesting sites by spotted turtles (Clemmys guttata) and blanding’s turtles (Emydoidea blandingii). Herpetological Conservation and Biology 5, 1-8.
| Google Scholar |
Bennett DH, Gibbons JW, Franson JC (1970) Terrestrial activity in aquatic turtles. Ecology 51, 738-740.
| Crossref | Google Scholar |
Berven KA, Grudzien TA (1990) Dispersal in the wood frog (Rana sylvatica): implications for genetic population structure. Evolution 44, 2047-2056.
| Crossref | Google Scholar |
Bodie JR, Semlitsch RD (2000a) Spatial and temporal use of floodplain habitats by lentic and lotic species of aquatic turtles. Oecologia 122, 138-146.
| Crossref | Google Scholar |
Bodie JR, Semlitsch RD (2000b) Size-specific mortality and natural selection in freshwater turtles. Copeia 2000, 732-739.
| Crossref | Google Scholar |
Bowne DR, Bowers MA (2004) Interpatch movements in spatially structured populations: a literature review. Landscape Ecology 19, 1-20.
| Crossref | Google Scholar |
Bowne DR, Michael AB, Hines JE (2006) Connectivity in an agricultural landscape as reflected by interpond movements of a freshwater turtle. Conservation Biology 20, 780-791.
| Crossref | Google Scholar |
Brown GP, Shine R (2007) Rain, prey and predators: climatically driven shifts in frog abundance modify reproductive allometry in a tropical snake. Oecologia 154, 361-368.
| Crossref | Google Scholar |
Browne CL, Hecnar SJ (2007) Species loss and shifting population structure of freshwater turtles despite habitat protection. Biological Conservation 138, 421-429.
| Crossref | Google Scholar |
Buchanan SW, Buffum B, Karraker NE (2017) Responses of a spotted turtle (Clemmys guttata) population to creation of early-successional habitat. Herpetological Conservation and Biology 12, 688-700.
| Google Scholar |
Buhlmann KA, Gibbons JW (2001) Terrestrial habitat use by aquatic turtles from a seasonally fluctuating wetland: implications for wetland conservation boundaries. Chelonian Conservation and Biology 4, 115-127.
| Google Scholar |
Calenge C (2006) The package “adehabitat” for the R software: a tool for the analysis of space and habitat use by animals. Ecological Modelling 197, 516-519.
| Crossref | Google Scholar |
Chandler HC, Stegenga BS, Stevenson DJ (2019) Movement and space use in southern populations of spotted turtles (Clemmys guttata). Southeastern Naturalist 18, 602-618.
| Crossref | Google Scholar |
Congdon JD, Dunham AE, Van Loben Sels RC (1993) Delayed sexual maturity and demographics of blanding’s turtles (Emydoidea blandingii): implications for conservation and management of long-lived organisms. Conservation Biology 7, 826-833.
| Crossref | Google Scholar |
Congdon JD, Dunham AE, Van Loben Sels RC (1994) Demographics of common snapping turtle (Chelydra serpentina): implications for conservation and management of long-lived organisms. American Zoologist 34, 397-408.
| Crossref | Google Scholar |
Congdon JD, Kinney OM, Nagle RD (2011) Spatial ecology and core-area protection of blanding’s turtle (Emydoidea blandingii). Canadian Journal of Zoology 89, 1098-1106.
| Crossref | Google Scholar |
Cosentino BJ, Schooley RL, Phillips CA (2010) Wetland hydrology, area, and isolation influence occupancy and spatial turnover of the painted turtle, Chrysemys picta. Landscape Ecology 25, 1589-1600.
| Crossref | Google Scholar |
Costanzo JP, Litzgus JD, Iverson JB, Lee RE, Jr. (2001) Cold-hardiness and evaporative water loss in hatchling turtles. Physiological and Biochemical Zoology 74, 510-519.
| Crossref | Google Scholar |
Crane M, Silva I, Marshall BM, Strine CT (2021) Lots of movement, little progress: a review of reptile home range literature. PeerJ 9, e11742.
| Crossref | Google Scholar |
Cáceres CE, Tessier AJ (2003) How long to rest: the ecology of optimal dormancy and environmental constraint. Ecology 84, 1189-1198.
| Crossref | Google Scholar |
Dempster JP, Atkinson DA, French MC (1995) The spatial population dynamics of insects exploiting a patchy food resource. Oecologia 104, 354-362.
| Crossref | Google Scholar |
Denoël M, Joly P, Whiteman HH (2005) Evolutionary ecology of facultative paedomorphosis in newts and salamanders. Biological Reviews 80, 663-671.
| Crossref | Google Scholar |
Dietz-Brantley SE, Taylor BE, Batzer DP, DeBiase AE (2002) Invertebrates that aestivate in dry basins of Carolina bay wetlands. Wetlands 22, 767-775.
| Crossref | Google Scholar |
Ernst CH (1968) Evaporative water-loss relationships of turtles. Journal of Herpetology 2, 159-161.
| Crossref | Google Scholar |
Ernst CH (1970) Home range of the spotted turtle, Clemmys guttata (Schneider). Copeia 1970, 391-393.
| Crossref | Google Scholar |
Ernst CH (1975) Growth of the spotted turtle, Clemmys guttata. Journal of Herpetology 9, 313-318.
| Crossref | Google Scholar |
Ernst CH (1976) Ecology of the spotted turtle, Clemmys guttata (Reptilia, Testudines, Testudinidae), in southeastern Pennsylvania. Journal of Herpetology 10, 25-33.
| Crossref | Google Scholar |
Fahrig L (2007) Non-optimal animal movement in human-altered landscapes. Functional Ecology 21, 1003-1015.
| Crossref | Google Scholar |
Fahrig L, Merriam G (1994) Conservation of fragmented populations. Conservation Biology 8, 50-59.
| Crossref | Google Scholar |
Ferronato BO, Roe JH, Georges A (2016) Urban hazards: spatial ecology and survivorship of a turtle in an expanding suburban environment. Urban Ecosystems 19, 415-428.
| Crossref | Google Scholar |
Finkler MS (2001) Rates of water loss and estimates of survival time under varying humidity in juvenile snapping turtles (Chelydra serpentina). Copeia 2001, 521-525.
| Crossref | Google Scholar |
Fleming CH, Calabrese JM (2017) ctmm: continuous-time movement modeling. R package version 0.6.1. Available at https://CRAN.R-project.org/package=ctmm
Fleming CH, Calabrese JM, Mueller T, Olson KA, Leimgruber P, Fagan WF (2014) From fine-scale foraging to home ranges: a semivariance approach to identifying movement modes across spatiotemporal scales. The American Naturalist 183, E154-E167.
| Crossref | Google Scholar |
Fleming CH, Fagan WF, Mueller T, Olson KA, Leimgruber P, Calabrese JM (2015) Rigorous home range estimation with movement data: a new autocorrelated kernel-density estimator. Ecology 96, 1182-1188.
| Crossref | Google Scholar |
Franken RJ, Hik DS (2004) Influence of habitat quality, patch size and connectivity on colonization and extinction dynamics of collared pikas Ochotona collaris. Journal of Animal Ecology 73, 889-896.
| Crossref | Google Scholar |
Fujisaki I, Hart KM, Mazzotti FJ, Cherkiss MS, Sartain AR, Jeffery BM, Beauchamp JS, Denton M (2014) Home range and movements of American alligators (Alligator mississippiensis) in an estuary habitat. Animal Biotelemetry 2, 8.
| Crossref | Google Scholar |
Gamble LR, McGarigal K, Compton BW (2007) Fidelity and dispersal in the pond-breeding amphibian, Ambystoma opacum: implications for spatio-temporal population dynamics and conservation. Biological Conservation 313, 247-257.
| Crossref | Google Scholar |
Gibbons JW (2003) Terrestrial habitat: a vital component for herpetofauna of isolated wetlands. Wetlands 23, 630-635.
| Crossref | Google Scholar |
Gibbs JP (2000) Wetland loss and biodiversity conservation. Conservation Biology 14, 314-317.
| Crossref | Google Scholar |
Gibbs JP, Shriver WG (2002) Estimating the effects of road mortality on turtle populations. Conservation Biology 16, 1647-1652.
| Crossref | Google Scholar |
Glaudas X, Andrews KM, Willson JD, Gibbons JW (2006) Migration patterns in a population of cottonmouths (Agkistrodon piscivorus) inhabiting an isolated wetland. Journal of Zoology 271, 119-124.
| Crossref | Google Scholar |
Hall DH, Steidl RJ (2007) Movements, activity, and spacing of Sonoran mud turtles (Kinosternon sonoriense) in interrupted mountain streams. Copeia 2007, 403-412.
| Crossref | Google Scholar |
Hanski I, Alho J, Moilanen A (2000) Estimating the parameters of survival and migration of individuals in metapopulations. Ecology 81, 239-251.
| Crossref | Google Scholar |
Haxton T, Berrill M (1999) Habitat selectivity of Clemmys guttata in central Ontario. Canadian Journal of Zoology 77, 593-599.
| Crossref | Google Scholar |
Hensely FR, Jones TR, Maxwell TR, Maxwell MS, Adams LJ, Nedella NS (2010) Demography, terrestrial behavior, and growth of Sonora mud turtles (Kinosternon sonoriense) in an extreme habitat. Herpetological Monographs 24, 174-193.
| Crossref | Google Scholar |
Heppell SS (1998) Application of life-history theory and population model analysis to turtle conservation. Copeia 1998, 367-375.
| Crossref | Google Scholar |
Herpetological Animal Care Committee (2004) Guidelines for the use of amphibians and reptiles in field and laboratory research. Available at http://www.asih.org/sites/default/files/documents/resources/guidelinesherpsresearch2004.pdf
Howell HJ, Seigel RA (2019) The effects of road mortality on small, isolated turtle populations. Journal of Herpetology 53, 39-46.
| Crossref | Google Scholar |
Iverson JB, Vogt RC (2011) Kinosternon acutum Gray 1831 –Tabasco mud turtle, Montera, Chechagua de Monte. Chelonian Research Monographs 5, 62.1-62.6.
| Google Scholar |
Jaeger CP, Cobb VA (2012) Comparative spatial ecologies of female painted turtles (Chrysemys picta) and red-eared sliders (Trachemys scripta) at Reelfoot Lake, Tennessee. Chelonian Conservation and Biology 11, 59-67.
| Crossref | Google Scholar |
Jeffries M (2005) Local-scale turnover of pond insects: intra-pond habitat quality and inter-pond geometry are both important. Hydrobiologia 543, 207-220.
| Crossref | Google Scholar |
Joyal LA, McCollough M, Hunter ML, Jr. (2001) Landscape ecology approaches to wetland species conservation: a case study of two turtle species in southern Maine. Conservation Biology 15, 1755-1762.
| Crossref | Google Scholar |
Kleyheeg E, van Dijk JGB, Tsopoglou-Gkina D, Woud TY, Boonstra DK, Nolet BA, Soons MB (2017) Movement patterns of a keystone waterbird species are highly predictable from landscape configuration. Movement Ecology 5, 2.
| Crossref | Google Scholar |
Kozakiewicz M, Kozakiewicz A, Łukowski A, Gortat T (1993) Use of space by bank voles (Clethrionomys glareolus) in a polish farm landscape. Landscape Ecology 8, 19-24.
| Crossref | Google Scholar |
Litzgus JD, Brooks RJ (2000) Habitat and temperature selection of Clemmys guttata in a northern population. Journal of Herpetology 34, 178-185.
| Crossref | Google Scholar |
Litzgus JD, Mousseau TA (2004) Home range and seasonal activity of southern spotted turtles (Clemmys guttata): implications for management. Copeia 2004, 804-817.
| Crossref | Google Scholar |
Litzgus JD, Costanzo JP, Brooks RJ, Lee RE, Jr. (1999) Phenology and ecology of hibernation in spotted turtles (Clemmys guttata) near the northern limit of their range. Canadian Journal of Zoology 77, 1348-1357.
| Crossref | Google Scholar |
Marchand MN, Litvaitis JA (2004) Effects of habitat features and landscape composition on the population structure of a common aquatic turtle in a region undergoing rapid development. Conservation Biology 18, 758-767.
| Crossref | Google Scholar |
Marsh DM, Trenham PC (2001) Metapopulation dynamics and amphibian conservation. Conservation Biology 15, 40-49.
| Crossref | Google Scholar |
Marsh DM, Fegraus EH, Harrison S (1999) Effects of breeding pond isolation on the spatial and temporal dynamics of pond use by the tungara frog, Physalaemus pustulosus. Journal of Animal Ecology 68, 804-814.
| Crossref | Google Scholar |
McIntyre NE, Wiens JA (1999) Interactions between landscape structure and animal behavior: the roles of heterogeneously distributed resources and food deprivation on movement patterns. Landscape Ecology 14, 437-447.
| Crossref | Google Scholar |
Merkle JA, Abrahms B, Armstrong JB, Sawyer H, Costa DP, Chalfoun AD (2022) Site fidelity as a maladaptive behavior in the Anthropocene. Frontiers in Ecology and the Environment 20, 187-194.
| Crossref | Google Scholar |
Milam JC, Melvin SM (2001) Density, habitat use, movements, and conservation of spotted turtles (Clemmys guttata) in Massachusetts. Journal of Herpetology 35, 418-427.
| Crossref | Google Scholar |
Mills LS, Allendorf FW (1996) The one-migrant-per-generation rule in conservation and management. Conservation Biology 10, 1509-1518.
| Crossref | Google Scholar |
Minns CK (1995) Allometry of home range size in lake and river fishes. Canadian Journal of Fisheries and Aquatic Sciences 52, 1499-1508.
| Crossref | Google Scholar |
Montaño RR, Cuéllar E, Fitzgerald LA, Soria F, Mendoza F, Peña R, Dosapey T, Deem SL, Noss AJ (2013) Ranging patterns by the red-footed tortoise – Geochelone carbonaria (Testudines: Testudinidae) – in the Bolivian Chaco. Ecologıa en Bolivia 48, 17-30.
| Google Scholar |
Morreale SJ, Gibbons JW, Congdon JD (1984) Significance of activity and movement in the yellow-bellied slider turtle (Pseudemys scripta). Canadian Journal of Zoology 62, 1038-1042.
| Crossref | Google Scholar |
Owen-Jones Z, Priol P, Thienport S, Cheylan M, Sauret G, Coic C, Besnard A (2016) The contrasting effects of short- and long-term habitat drainage on the population dynamics of freshwater turtles in a human-dominated landscape. Freshwater Biology 61, 121-132.
| Crossref | Google Scholar |
O’Bryan CJ, Homyack JA, Baldwin RF, Kanno Y, Harrison A-L (2016) Novel habitat use supports population maintenance in a reconfigured landscape. Ecosphere 7, e01228.
| Crossref | Google Scholar |
Peacock MM, Smith AT (1997) The effect of habitat fragmentation on dispersal patterns, mating behavior, and genetic variation in a pika (Ochotona princeps) metapopulation. Oecologia 112, 524-533.
| Crossref | Google Scholar |
Perret N, Pradel R, Miaud C, Grolet O, Joly P (2003) Transience, dispersal and survival rates in newt patchy populations. Journal of Animal Ecology 72, 567-575.
| Crossref | Google Scholar |
Petranka JW, Smith CK, Floyd Scott A (2004) Identifying the minimal demographic unit for monitoring pond-breeding amphibians. Ecological Applications 14, 1065-1078.
| Crossref | Google Scholar |
Plummer MV, Mills NE, Allen SL (1997) Activity, habitat, and movement patterns of softshell turtles (Trionyx spiniferus) in a small stream. Chelonian Conservation and Biology 2, 514-520.
| Google Scholar |
Prugh LR, Hodges KE, Sinclair ARE, Brashares JS (2008) Effect of habitat area and isolation on fragmented animal populations. Proceedings of the National Academy of Sciences 105, 20770-20775.
| Crossref | Google Scholar |
Pérez-Pérez A, López-Moreno AE, Suárez-Rodríguez O, Rheubert JL, Hernández-Gallegos O (2017) How far do adult turtles move? Home range and dispersal of Kinosternon integrum. Ecology and Evolution 7, 8220-8231.
| Crossref | Google Scholar |
Quesnelle PE, Fahrig L, Lindsay KE (2013) Effects of habitat loss, habitat configuration and matrix composition on declining wetland species. Biological Conservation 160, 200-208.
| Crossref | Google Scholar |
Quesnelle PE, Lindsay KE, Fahrig L (2014) Low reproductive rate predicts species sensitivity to habitat loss: a meta-analysis of wetland vertebrates. PLoS ONE 9, e90926.
| Crossref | Google Scholar |
Quesnelle PE, Lindsay KE, Fahrig L (2015) Relative effects of landscape-scale wetland amount and landscape matrix quality on wetland vertebrates: a meta-analysis. Ecological Applications 25, 812-825.
| Crossref | Google Scholar |
Rasmussen ML, Litzgus JD (2010a) Habitat selection and movement patterns of spotted turtles (Clemmys guttata): effects of spatial and temporal scales of analyses. Copeia 2010, 86-96.
| Crossref | Google Scholar |
Ribeiro R, Carretero MA, Sillero N, Alarcos G, Ortiz-Santaliestra M, Lizana M, Llorente GA (2011) The pond network: can structural connectivity reflect on (amphibian) biodiversity patterns? Landscape Ecology 26, 673-682.
| Crossref | Google Scholar |
Ringler M, Ursprung E, Hödl W (2009) Site fidelity and patterns of short- and long-term movement in the brilliant-thighed poison frog Allobates femoralis (Aromobatidae). Behavioral Ecology and Sociobiology 63, 1281-1293.
| Crossref | Google Scholar |
Roe JH, Georges A (2007) Heterogeneous wetland complexes, buffer zones, and travel corridors: landscape management for freshwater reptiles. Biological Conservation 135, 67-76.
| Crossref | Google Scholar |
Roe JH, Georges A (2008a) Terrestrial activity, movements and spatial ecology of an Australian freshwater turtle, Chelodina longicollis, in a temporally dynamic wetland system. Austral Ecology 33, 1045-1056.
| Crossref | Google Scholar |
Roe JH, Georges A (2008b) Maintenance of variable responses for coping with wetland drying in freshwater turtles. Ecology 89, 485-494.
| Crossref | Google Scholar |
Roe JH, Brinton AC, Georges A (2009) Temporal and spatial variation in landscape connectivity for a freshwater turtle in a temporally dynamic wetland system. Ecological Applications 19, 1288-1299.
| Crossref | Google Scholar |
Row JR, Blouin-Demers G (2006) Kernels are not accurate estimators of home-range size for herpetofauna. Copeia 2006, 797-802.
| Crossref | Google Scholar |
Rowe JW, Dalgarn SF (2010) Home range size and daily movements of midland painted turtles (Chrysemys picta marginata) in relation to body size, sex, and weather patterns. Herpetological Conservation Biology 5, 461-473.
| Google Scholar |
Rowe JW, Moll EO (1991) A radiotelemetric study of activity and movements of the blanding’s turtle (Emydoidea blandingi) in northeastern Illinois. Journal of Herpetology 25, 178-185.
| Crossref | Google Scholar |
Rowe JW, Gradel JR, Bunce CF (2013) Effects of weather conditions and drought on activity of spotted turtles (Clemmys guttata) in a southwestern Michigan wetland. The American Midland Naturalist 169, 97-110.
| Crossref | Google Scholar |
Sayer MDJ, Davenport J (1991) Amphibious fish: why do they leave water? Reviews in Fish Biology and Fisheries 1, 159-181.
| Crossref | Google Scholar |
Schuler M, Thiel RP (2008) Annual vs. multiple-year home range sizes of individual blanding’s turtles, Emydoidea blandingii, in central Wisconsin. The Canadian Field-Naturalist 122, 61-64.
| Crossref | Google Scholar |
Semlitsch RD, Bodie JR (1998) Are small, isolated wetlands expendable? Conservation Biology 12, 1129-1133.
| Crossref | Google Scholar |
Semlitsch RD, Bodie JR (2003) Biological criteria for buffer zones around wetlands and riparian habitats for amphibians and reptiles. Conservation Biology 17, 1219-1228.
| Crossref | Google Scholar |
Serrano F, Pita R, Mota-Ferreira M, Beja P, Segurado P (2019) Landscape connectivity affects individual survival in unstable patch networks: the case of a freshwater turtle inhabiting temporary ponds. Freshwater Biology 65, 540-551.
| Crossref | Google Scholar |
Sexton OJ (1959) Spatial and temporal movements of a population of the painted turtle, Chrysemys picta marginata (Agassiz). Ecological Monographs 29, 113-140.
| Crossref | Google Scholar |
Shoemaker KT, Gibbs JP (2013) Genetic connectivity among populations of the threatened bog turtle (Glyptemys muhlenbergii) and the need for a regional approach to turtle conservation. Copeia 2013, 324-331.
| Crossref | Google Scholar |
Slavenko A, Itescu Y, Ihlow F, Meiri S (2016) Home is where the shell is: predicting turtle home range sizes. Journal of Animal Ecology 85, 106-114.
| Crossref | Google Scholar |
Smith LM, Cherry RP (2016) Movement, seasonal activity, and home range of an isolated population of Glyptemys muhlenbergii, bog turtle, in the southern Appalachians. Southeastern Naturalist 15, 207-219.
| Crossref | Google Scholar |
Smith HT, Engeman RM (2002) An extraordinary raccoon density at an urban park in Florida. Canadian Field Naturalist 116, 636-639.
| Google Scholar |
Smith AT, Vrieze JM (1979) Population structure of everglades rodents: responses to a patchy environment. Journal of Mammalogy 60, 778-794.
| Crossref | Google Scholar |
Smith LL, Subalusky AL, Atkinson CL, Earl JE, Mushet DM, Scott DE, Lance SL, Johnson SA (2019) Biological connectivity of seasonally ponded wetlands across spatial and temporal scales. Journal of the American Water Resources Association 55, 334-353.
| Crossref | Google Scholar |
Steen DA, Gibbs JP (2004) Effects of roads on the structure of freshwater turtle populations. Conservation Biology 18, 1143-1148.
| Crossref | Google Scholar |
Stevenson DJ, Jensen JB, Schlimm EA, Moore M (2015) The distribution, habitat use, activity, and status of the spotted turtle (Clemmys guttata) in Georgia. Chelonian Conservation and Biology 14, 136-142.
| Crossref | Google Scholar |
Stone PA, Iverson JB (1999) Cutaneous surface area in freshwater turtles. Chelonian Conservation and Biology 3, 512-515.
| Google Scholar |
Stone PA, Locey KJ, Laverty S, Stanila BD, Stone ME (2015) Conservation implications of male-biased movements in Sonoran mud turtles (Kinosternon sonoriense) inhabiting intermittent aquatic habitats. Herpetological Conservation and Biology 10, 728-739.
| Google Scholar |
Storfer A, Murphy MA, Evans JS, Goldberg CS, Robinson S, Spear SF, Dezzani R, Delmelle E, Vierling L, Waits LP (2007) Putting the ‘landscape’ in landscape genetics. Heredity 98, 128-142.
| Crossref | Google Scholar |
Subalusky A, Fitzgerald L, Smith L (2009) Detection of American alligators in isolated, seasonal wetlands. Applied Herpetology 6, 199-210.
| Crossref | Google Scholar |
Switzer PV (1993) Site fidelity in predictable and unpredictable habitats. Evolutionary Ecology 7, 533-555.
| Crossref | Google Scholar |
Tamburello N, Côté IM, Dulvy NK (2015) Energy and the scaling of animal space use. The American Naturalist 186, 196-211.
| Crossref | Google Scholar |
Taylor PD, Fahrig L, Henein K, Merriam G (1993) Connectivity is a vital element of landscape structure. Oikos 68, 571-572.
| Crossref | Google Scholar |
Trenham PC, Koenig WD, Shaffer HB (2001) Spatially autocorrelated demography and interpond dispersal in the salamander Ambystoma californiense. Ecology 82, 3519-3530.
| Crossref | Google Scholar |
van Dijk PP (2011) Clemmys guttata (errata version published in 2016). The IUCN red list of threatened species 2011:e.T4968A97411228. Available at https://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T4968A11103766.en. Accessed on 6 January 2023.
Yagi KT, Litzgus JD (2012) The effects of flooding on the spatial ecology of spotted turtles (Clemmys guttata) in a partially mined peatland. Copeia 2012, 179-190.
| Crossref | Google Scholar |
Zollner PA, Lima SL (2005) Behavioral tradeoffs when dispersing across a patchy landscape. Oikos 108, 219-230.
| Crossref | Google Scholar |
