Bibliografías temáticas / Wood turtle

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Literatura académica sobre el tema "Wood turtle"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 7 de febrero de 2022

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Artículos de revistas sobre el tema "Wood turtle"

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Cochrane, Madaline, Donald Brown y Ron Moen. "GPS Technology for Semi-Aquatic Turtle Research". Diversity 11, n.º 3 (1 de marzo de 2019): 34. http://dx.doi.org/10.3390/d11030034.

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Global positioning system (GPS) telemetry units are now small enough to be deployed on terrestrial and semi-aquatic turtles. Many of these GPS units use snapshot technology which collects raw satellite and timestamp data during brief periods of data recording to minimize size. We evaluated locations from snapshot GPS units in stationary tests and on wood turtles (Glyptemys insculpta) in northeastern Minnesota. Stationary GPS units were placed in wood turtle habitat to evaluate location accuracy, fix success rate, and directional bias. The GPS fix success rate and accuracy were reduced in closed canopy conditions and when the stationary GPS unit was placed under a log to simulate wood turtle hiding behavior. We removed GPS location outliers and used a moving average calculation to reduce mean location error in stationary tests from 27 m (SD = 38) to 10 m (SD = 8). We then deployed GPS units and temperature loggers on wood turtles and collected 122,657 GPS locations and 242,781 temperature readings from 26 turtles from May to September 2015 and 2016. Location outliers accounted for 12% of locations when the GPS receiver was on a turtle. We classified each wood turtle location based on the GPS location and by comparing temperature profiles from river, sun, and shaded locations to the temperature logger on the turtle. We estimated that wood turtles were on land 68% (SD = 12) of the time from May to September. The fix success rate for land locations was 38% (SD = 9), indicating that wood turtles often use habitats with obstructed views of the sky. Mean net daily movement was 55 m (SD = 192). Our results demonstrate that snapshot GPS units and temperature loggers provide fine-scale GPS data useful in describing spatial ecology and habitat use of semi-aquatic turtles.
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2

Wallace, S. D., G. J. Forbes y J. J. Nocera. "Habitat selection, movement, and food preferences of Wood Turtles (Glyptemys insculpta) in an agri-forested landscape". Canadian Journal of Zoology 98, n.º 11 (noviembre de 2020): 743–50. http://dx.doi.org/10.1139/cjz-2020-0074.

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Wood Turtles (Glyptemys insculpta (Le Conte, 1830)) can use agricultural fields for basking and feeding, but hayfields can be an ecological trap due to mortality associated with agricultural machinery. It is unclear if hayfields are selected habitat or simply occur adjacent to used waterways. We sought to investigate Wood Turtle habitat selection at the third- and fourth-order scales in an agri-forested landscape and quantify food abundance (berries, fungi, and gastropods–worms) among habitat types. To quantify habitat selection by Wood Turtles, we radio-tracked 23 adults from May to November of 2018. We measured habitat features at each turtle location and three random sites within 50 m. At the third order, turtles primarily selected for edge habitat and selected hayfields over forest. At the fourth order, turtles selected for low canopy cover and presence of woody debris. Earthworms (suborder Lumbricina) were abundant within hayfields, and berries and fungi were abundant in forests. Turtles abandoned hayfields at the end of July, likely due to the emergence of food within the forest. Food availability likely influences their habitat use during the season, and hayfields provide a food source that entices Wood Turtles during the prime hay harvest period, which likely increases the risk of machinery-related mortality.
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3

Flanagan, Melissa, Vanessa Roy-McDougall, Graham Forbes y Glen Forbes. "Survey methodology for the detection of Wood Turtles (Glyptemys insculpta)". Canadian Field-Naturalist 127, n.º 3 (3 de diciembre de 2013): 216. http://dx.doi.org/10.22621/cfn.v127i3.1486.

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Wood Turtles (Glyptemys insculpta) are difficult to survey because their use of aquatic and terrestrial environments varies spatio-temporally. Existing survey methodology is highly variable and typically involves searching for Wood Turtles within water and on land 0 to >20 m from the shoreline from spring to autumn. The mobility of Wood Turtles suggests that detection is likely influenced by distance surveyed from water and the amount of vegetation, which varies by season. To determine an ideal survey methodology for the Wood Turtle, we recorded distances from a waterway of 31 radio-tagged turtles at Canadian Forces Base, Gagetown, New Brunswick, in 2003 and 2004. Ordinal logistic regression was used to determine the probability of finding male or female Wood Turtles with increasing distance from water at different times of day or season. Sex and time of day were not significant factors in detecting Wood Turtles. Season was a significant factor, with highest probability (69%) of finding Wood Turtles at a distance of 0–10 m of a waterway up to July 1 (corresponding to pre-nesting and nesting periods), compared to probabilities of <10% for any 10-m distance between 10 m and 50 m from a waterway. After July 1, the highest detection probability (50%) was at distances greater than 50 m from a waterway. We recommend that Wood Turtle surveys for environmental impact assessments and population monitoring be conducted on warm days (i.e., 10–25°C) within 10 m of waterways up to July 1.
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Arvisais, Martin, Esther Lévesque, Jean-Claude Bourgeois, Claude Daigle, Denis Masse y Jacques Jutras. "Habitat selection by the wood turtle (Clemmys insculpta) at the northern limit of its range". Canadian Journal of Zoology 82, n.º 3 (1 de marzo de 2004): 391–98. http://dx.doi.org/10.1139/z04-012.

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We characterized the chronology of habitat use by the wood turtle, Clemmys insculpta (LeC., 1829), in the Mauricie region of Quebec, Canada. We also determined if this species used habitats according to availability within a home range and identified habitat features influencing habitat selection. Habitats were characterized for 20 wood turtles followed weekly by telemetry during the active season of 1997. Turtles used a great diversity of terrestrial and aquatic habitats. Alder (Alnus rugosa (Du Roi) Spreng.) stands were the most used terrestrial habitats throughout the active season. Habitat use varied according to activity period. Indeed, wood turtles used aquatic habitats and alder stands during prenesting and prehibernation activity periods, whereas all habitat types were used during nesting and postnesting activity periods. Wood turtles did not use habitats randomly within their home ranges, suggesting that they selected them. Wood turtles seemed to select mixed forest stands that were relatively young (16 years), short (1–4 m), had low arborescent cover (25%), moderate cover of the upper shrub layer (35%), and low total canopy closure (0%–50%). This knowledge will be helpful in the establishment of future conservation measures.
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5

Arvisais, Martin, J. C. Bourgeois, E. Lévesque, C. Daigle, D. Masse y J. Jutras. "Home range and movements of a wood turtle (Clemmys insculpta) population at the northern limit of its range". Canadian Journal of Zoology 80, n.º 3 (1 de marzo de 2002): 402–8. http://dx.doi.org/10.1139/z02-013.

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We studied the home ranges and seasonal movements of 20 wood turtles (Clemmys insculpta) living near the northern limit of their distribution in the Mauricie region, Quebec, Canada. We found average home-range areas of 28.3 ha. Wood turtles showed site fidelity; there was an average overlap of 60.7% in their home ranges, and 88.8% of the home-range centroids were not significantly different for the 2 years of the study. The home ranges were larger than those reported from studies in more southerly locations, leading us to hypothesize larger home-range territories with increasing latitude. Our analyses indicate that turtle movements could be grouped into four distinct activity periods during the active season: the prenesting, nesting, postnesting, and prehibernation periods. We found that wood turtles were closely associated with streams. Based on the importance of this habitat for the species, we suggest the establishment of protected buffer strips along streams used by wood turtles.
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Jones, Michael T., Lisabeth L. Willey, Derek T. Yorks, Peter D. Hazelton y Steve L. Johnson. "Passive transport of Eastern Elliptio (Elliptio complanata) by freshwater turtles in New England". Canadian Field-Naturalist 134, n.º 1 (8 de julio de 2020): 56–59. http://dx.doi.org/10.22621/cfn.v134i1.2379.

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Dispersal of freshwater mussels (order Unionida) is primarily as glochidia on the fins and gills of host fish. Adult mussels are more sessile, generally moving short distances (<2 m/week) along lake and river beds. Between 2007 and 2016, we observed seven instances of adult Eastern Elliptio (Elliptio complanata) and one instance of a fingernail clam (Sphaerium sp.) attached to the feet of freshwater turtles in streams and ponds of New England, United States. Observations included five instances of mussels attached to Wood Turtles (Glyptemys insculpta) in Maine and Massachusetts, one instance of a mussel attached to the fingernail of an Eastern Painted Turtle (Chrysemys picta) in Massachusetts, one instance of a mussel attached to a Snapping Turtle (Chelydra serpentina) in Massachusetts, and one instance of a fingernail clam attached to the fingernail of an Eastern Painted Turtle in Massachusetts. We suggest that Eastern Elliptio may be susceptible to transport by freshwater turtles foraging in mussel beds and that transport of adult mussels by freshwater turtles could result in otherwise atypical long-distance, upstream, or overland dispersal between waterbodies.
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7

Figueras, M. P., B. A. Bastarache y R. L. Burke. "Water exchange relationships predict overwintering behavior in hatchling turtles". Canadian Journal of Zoology 96, n.º 8 (agosto de 2018): 928–32. http://dx.doi.org/10.1139/cjz-2017-0132.

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Neonatal ectotherms face a wide range of environmental hazards because of the diverse habitats that they inhabit and their small body sizes; this is especially true among turtles that live in temperate zones and experience cold winter conditions after hatching. Such hatchlings must balance challenges involving desiccation, freezing, and predation, among other threats. Turtle hatchlings either overwinter in water, terrestrially in relatively shallow nests, terrestrially deep below nests, or terrestrially outside of the nest entirely, and these different microhabitats are associated with different desiccation and freezing risks. We measured desiccation tolerance of individuals of six turtle species, including two (Diamondback Terrapins, Malaclemys terrapin (Schoepff, 1793), and Eastern Box Turtles, Terrapene carolina (Linnaeus, 1758)) that use a strategy that has not previously been explored, along with Wood Turtles (Glyptemys insculpta (Le Conte, 1830)), whose overwintering microhabitat is uncertain. We found additional support for the hypothesis that desiccation resistance is associated with overwintering strategies in hatchling turtles. Further investigation into the overwintering strategies of M. terrapin and T. carolina would be productive.
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Greaves, W. F. y J. D. Litzgus. "Chemical, thermal, and physical properties of sites selected for overwintering by northern wood turtles (Glyptemys insculpta)". Canadian Journal of Zoology 86, n.º 7 (julio de 2008): 659–67. http://dx.doi.org/10.1139/z08-044.

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Northern ectotherms must seek refuge from winter conditions for a large portion of their annual activity cycle. The objective of this study was to quantify physical properties of overwintering sites selected by wood turtles ( Glyptemys insculpta (LaConte, 1830)) at the species’ northern range limit. We mapped all structural features (e.g., root balls and log jams), water depth, and sediment types along a 1.5 km stretch of river that was available to turtles outfitted with radio transmitters (N = 8) during winter. Temperature selection was assessed by comparing thermal profiles from data loggers on turtles and temperature stations within the river and other riparian habitats (e.g., ephemeral pools and oxbows). Dissolved oxygen (DO) was measured at each temperature station and turtle location. Wood turtles overwintered in the river, which was colder (~0 °C), had more stable temperatures, and provided higher DO (12.64 ppm) compared with adjacent habitats. Some turtles selected structured refuges for overwintering. Winter movements were not related to temperature or DO, but may be related to maintaining a certain distance from shore and water depth to protect against accidental relocations during winter. We discuss hibernacula as potential factors limiting the northern distribution of wood turtles, a species at risk in Canada.
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MacNeill, Amy L., Elizabeth W. Uhl, Holly Kolenda-Roberts y Elliott Jacobson. "Mortality in a Wood Turtle (Clemmys insculpta) Collection". Veterinary Clinical Pathology 31, n.º 3 (septiembre de 2002): 133–36. http://dx.doi.org/10.1111/j.1939-165x.2002.tb00293.x.

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Jones, Michael T. y Paul R. Sievert. "Effects of Stochastic Flood Disturbance on Adult Wood Turtles, Glyptemys insculpta, in Massachusetts". Canadian Field-Naturalist 123, n.º 4 (1 de octubre de 2009): 313. http://dx.doi.org/10.22621/cfn.v123i4.1000.

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The homing ability of non-marine turtles has been studied in a variety of taxa, and many species appear to be capable of short-range homing on the scale of several hundred meters or a few kilometers following experimental displacement. However, the behavioral response of turtles following a naturally caused displacement has seldom been reported. In this paper, we describe the effect of displacement ranging from 1.4 to 16.8 km (average = 4.8 km) by severe floods in a stream system in Massachusetts. We radio-tracked 38 adult Wood Turtles (Glyptemys insculpta) at five separate sites in Franklin County, Massachusetts, for periods ranging from one to four activity seasons and documented the displacement of a total of 12 Wood Turtles during seven floods between 2004 and 2008. Based on the average rate of displacement per flood and annual flood frequency, we estimate that, during our study, floods displaced over 40% of this Wood Turtle subpopulation annually. We present evidence that displacement results in elevated mortality rates and that displaced Wood Turtles mate and nest in the year following displacement at rates well below average; on a longer time scale, however, displacement by flooding may be an important mechanism of population connectivity in some areas. We also present evidence that most Wood Turtles avoid stream segments with stream gradient steeper than 1%; this may in part reflect an adaptation to avoid severe floods. Regional models and empirical data from stream gages suggest that flood intensity may currently be on an increasing trend. Conversion of upland from forest and fields to impervious surfaces and hardening of upstream riverbanks may have exacerbated recent flooding and decreased the resiliency of the riparian system to increased precipitation.
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Más fuentes

Tesis sobre el tema "Wood turtle"

1

Saumure, Raymond A. "Growth, mutilation, and age structure of two populations of wood turtles, Clemmys insculpta, in southern Québec". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq29779.pdf.

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Saumure, Raymond A. "Spatial ecology and conservation of the North American wood turtle (Glyptemys insculpta) in a fragmented agri-forest landscape". Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=85093.

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The impact of agricultural practices on wood turtle (Glyptemys insculpta) movements and survivorship was investigated in a fragmented agri-forest landscape over two years. Agricultural activities and machinery contributed to the death of 20% of radio-tracked turtles. Annual survivorship of adults was 0.904 and 0.868 and for juveniles it was 0.815 and 0.831 for 1998 and 1999, respectively. Mutilation rates in adults were 90% +/- 3% in both years; in contrast, the maximum rate in juveniles was 57%. Setting the cutting height of disc mowers to 100 mm would increase harvest yields, reduce wear on machinery, decrease soil erosion, and reduce turtle mortality and mutilation rates. The concepts of integral, statistical, and linear range are introduced as distinct estimators of turtle movements. Since integral ranges include all habitats critical to survival, they provide an important contribution to our knowledge of imperiled species. Statistical ranges are stable and easily promote within and between study comparisons. Linear ranges quantify migratory and ranging movements. Thread-trailing techniques were used to record the fine-scale movements of six adult male G. insculpta translocated to an experimental hayfield patch-matrix. Although patch size had no effect on move length or path sinuosity, habitat structure did. Paths were generally straighter and move length longer in the harvested portion of a hayfield. Apparent habitat boundaries were shown to be permeable. Subjects exhibit three movement phases: agitation dispersal, local search, and ranging. Thus, G. insculpta exhibit predetermined movement patterns and move to maximize the likelihood of locating resources, while minimizing the probability of revisiting previously searched areas. Recent changes in agricultural practices and machinery are having a decidedly negative impact on G. insculpta. This study provides new insights into the movements of G. insculpta. Such knowledge will be an es
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3

Walde, Andrew D. "Ecology of the wood turtle, Clemmys insculpta, Québec, Canada". Thesis, McGill University, 1998. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20888.

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The most northeasterly population of wood turtles (Clemmys insculpta ) was studied during 1996 and 1997 in Quebec, Canada. A total of 188 turtles (55 males, 83 females, and 50 immatures) was captured, measured and marked for future identification. The adult sex ratio was not significantly different from 1:1. Males were significantly larger than females for measures of carapace length, 214.5 and 201 mm, respectively. Wood turtles from northern populations are larger than those from southern regions. The population density was estimated to be 0.44 turtles/hectare. Courtship occurred in the spring but was more common in the fall. Nesting occurred in mid-June with nesting activity taking place at all times of the day but more frequently in early morning and evening. Females migrated over 3 km to a nesting area and exhibited nest fidelity. Sixty-six percent of turtles nested in 2 consecutive yr and these females were significantly larger than turtles that nested in only 1 yr of the study. There was no mammalian predation but, some arthropods were suspected of being predators. Mean clutch size was 10.1 (range = 5--20) eggs. Comparisons with other populations of C. insculpta are also made.
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Walde, Andrew D. "Ecology of the wood turtle, Clemmys insculpta, Quebec, Canada". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0002/MQ44310.pdf.

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Breisch, Ariana N. "The natural history and thermal ecology of a population of spotted turtles (Clemmys guttata) and wood turtles (Glyptemys insculpta) in West Virginia". Huntington, WV : [Marshall University Libraries], 2006. http://www.marshall.edu/etd/descript.asp?ref=623.

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Theses (M.S.)--Marshall University, 2006.
Title from document title page. Includes abstract. Document formatted into pages: contains xi, 319 p. including illustrations and maps. Bibliography: p. 228-234.
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6

Krichbaum, Steven P. "Ecology and Conservation Biology of the North American Wood Turtle (Glyptemys insculpta) in the Central Appalachians". Ohio University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1523017722959154.

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(8812556), Reine K. Sovey. "Microhabitat Use by Blanding’s Turtles (Emydoidea blandingii) and Wood Turtles (Glyptemys insculpta) in a Shared Landscape". Thesis, 2020.

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Understanding and adequately protecting habitat is at the forefront of modern conservation concerns. Turtles are especially vulnerable to habitat loss, and are therefore a top priority for habitat research. To help meet this need, I used radio telemetry to collect microhabitat data from two imperiled species of turtles that occupy a military base in Michigan. Preliminary data exploration was carried out with principal components analysis (PCA). Microhabitat use was then modeled for each species using conditional logistic regression (CLR), with a generalized estimating equation (GEE) element to limit bias due to individual variation. Finally, I compared habitat use between sympatric Blanding’s and Wood Turtles using Mann-Whitney U tests and Mood’s median tests to investigate the degree of overlap in microhabitat use when these species occur in sympatry. Evidence for microhabitat selection in Blanding’s Turtles was weak, suggesting that they likely do not make habitat decisions at this level. Wood Turtles selected sites that were farther from water and had fewer trees, less overstory canopy cover, and more ground cover. Additionally, the two species differed in several aspects of microhabitat use; Wood Turtles were more terrestrial and more tolerant of tree cover than Blanding’s Turtles. Patterns of microhabitat use found in this study match previously observed behavior of turtles in high quality habitat, suggesting that managers should work to maintain the habitat currently available at Camp Grayling. Additionally, because both turtle species were associated with open canopy, selective logging could benefit turtles provided care is given to timing and methods.

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8

Jones, Michael T. "Spatial ecology, population structure, and conservation of the wood turtle, Glyptemys insculpta, in central New England". 2009. https://scholarworks.umass.edu/dissertations/AAI3359143.

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Wood turtles (Glyptemys insculpta) are of conservation interest rangewide. Anecdotal accounts demonstrate that some populations have been decimated since 1850, and recent studies demonstrate that declines are still underway. From 2004–2008 I investigated the ecology of wood turtles in Massachusetts and New Hampshire. I obtained between one and five years of annual home range data for 150 turtles, and evaluated population structure at 31 sites in five major watersheds. Seasonal floods displaced 7% of wood turtles annually in one watershed, and accounted for elevated mortality. Twelve wood turtles were displaced < 16.8 km, and two were displaced over a 65-foot dam. Several turtles overwintered at their displacement site and two returned successfully, indicating that floods are a mechanism of population connectivity. Several homing turtles ended up in new areas. Turtles occupied stream segments with gradient < 1%, lower than generally available. Agricultural machinery accounted for most observed mortality, followed by automobiles and mammals. Female turtles exhibit smaller home ranges in agricultural areas. Older turtles move farther from the river than do young turtles, possibly reflecting their familiarity with a former landscape. Population density ranged from 0–40.4 turtles/river-kilometer. The highest densities occur in central New Hampshire and lower densities occur in the Housatonic watershed. Population density is negatively correlated with agriculture at both riparian and watershed scales, and responds unimodally to forest cover. Wood turtle populations in western Massachusetts are declining by 6.6–11.2% annually. I estimated ages of turtles by assessing shell-wear rates from photographs. Wood turtles regularly achieve ages over 80 years, and like related species, do not exhibit clear signs of senescence. Old wood turtles are reproductively dominant, and their survival rates are twice as high as young turtles. Carapace scutes appear to require 80 years to become worn. Population modeling indicates that wood turtle populations are declining in New England due to anthropogenic and natural factors. Conservation efforts must address the effects of agriculture on adult survival. Climate change may negatively affect northeastern wood turtles through increased flooding. Populations in mountainous areas may be likely candidates for conservation because they don't occupy prime agricultural land, but may be more susceptible to floods.
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Bouchard, Cindy. "La génétique au service de la conservation de la tortue des bois (Glyptemys insculpta)". Thesis, 2020. http://hdl.handle.net/1866/25265.

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La biologie de la conservation est un domaine de recherche en pleine expansion en raison de la perte accélérée de la biodiversité à l’échelle mondiale. Pour mieux comprendre les processus et les menaces au maintien des populations de petite taille et les effets des facteurs anthropiques sur la biodiversité, la génétique est fréquemment utilisée en conservation. Des analyses génétiques peuvent, par exemple, nous informer sur les tendances à long terme, la diversité des populations et les stratégies de reproduction d’une espèce. La tortue des bois (Glyptemys insculpta) est une espèce endémique à l’Amérique du Nord qui est en danger d’extinction selon l’Union internationale pour la conservation de la nature. Dans le cadre de ma thèse, j’avais comme objectif de caractériser la diversité génétique de cette espèce menacée au Canada. À cet effet, j’ai analysé la génétique des populations de tortues des bois à plusieurs échelles spatiales et temporelles, afin de mieux cerner les processus ayant un impact sur la diversité des populations. Dans un premier temps, les relations de parentalité ont été reconstruites au sein d’une population de tortues des bois pour estimer la fréquence de paternité multiple et de paternité répétée. Les résultats de mes travaux suggèrent que l’emmagasinement de sperme chez la femelle et la reproduction multiple avec les mêmes partenaires pour plus d’une saison de reproduction pourraient expliquer ces phénomènes. Ces stratégies de reproduction pourraient dans ce cas être induites par la faible densité de la population à l’étude, ou encore par la fidélité au site d’hibernation où la majorité des évènements de copulation ont lieu. Par la suite, je me suis intéressée à la diversité génétique des populations de tortues de bois. J’ai voulu comprendre les effets de la configuration spatiale des éléments du paysage et les évènements de dispersion géographique sur la diversité des populations. À l’aide d’une approche de génétique du paysage, mes analyses montrent que la division des populations par bassins versants explique une large fraction de la diversité génétique interpopulations. Ces résultats confirment également que les bassins versants représentent des unités de gestion propices à la protection des populations de tortues des bois. Finalement, des analyses de réseaux ont été utilisées pour mieux cerner la dynamique de flux génique entre les populations de la rive nord et de la rive sud du fleuve Saint-Laurent. Plus spécifiquement, la rive nord se caractérise par un réseau robuste de populations isolées, alors que les populations de la rive sud présentent plutôt une structure de métapopulation. En utilisant les réseaux construits à partir de données génétiques, des scénarios hypothétiques furent comparés pour explorer la sélection de populations à l’aide du logiciel BRIDES. Les résultats de ces analyses ont permis de cibler l’importance de certaines populations de tortues des bois pour la connectivité du réseau. L’importance de ces populations n’aurait pu être prédite par les résultats de la diversité et de la différenciation génétique, les indices de centralité et les analyses d’élimination de nœuds. Grâce à la génétique, cette thèse apporte de nouvelles connaissances sur la tortue des bois, les stratégies de reproduction des différents sexes, le flux génique, la connectivité et l’influence du réseau hydrographique sur la diversité des populations. Ces résultats nous permettent d’avoir une meilleure compréhension des processus affectant la diversité génétique de cette espèce afin de mieux la protéger. Toutes les analyses réalisées pour cette thèse sont directement applicables à l’ensemble des autres espèces longévives avec des générations chevauchantes.
Conservation biology is a rapidly expanding field of research due to the accelerating loss of global biodiversity. To better understand the processes and threats to the persistence of small populations and the effects of anthropogenic factors on biodiversity, genetic approaches are frequently used in conservation. Genetic analyzes can, for example, inform us about long-term trends, population diversity and reproductive strategies of a species. The wood turtle (Glyptemys insculpta) is a species endemic to North America that is endangered according to the International Union for the Conservation of Nature. As part of my thesis, my objective was to characterize the genetic diversity of this threatened species in Canada. In order to better understand the impact of reproductive strategy and landscape structure on population diversity, I analyzed the genetics of wood turtle populations at several spatial and temporal scales. First, parentage relationships were reconstructed in a population of wood turtles to estimate the frequency of multiple and repeated paternity. The results of my work suggest that sperm storage in females and multiple reproduction with the same partners for more than one breeding season could explain these phenomena. These reproduction strategies could in this case be induced by the low density of the study population, or by fidelity to the overwintering site where the majority of copulation events take place. Subsequently, I assessed the genetic diversity of wood turtle populations. I wanted to understand the effects of the landscape configuration and geographic dispersion events on the diversity of populations. Using a landscape genetics approach, my analyzes show that the division of populations by watershed explains a large fraction of the genetic diversity between populations. These results also confirm that watersheds represent management units conducive to the protection of wood turtle populations. Finally, network analysis was used to better understand the gene flow dynamics among populations located on the north and south shores of the St. Lawrence River. More specifically, the north shore is characterized by a robust network of isolated populations, whereas the populations on the south shore present more of a metapopulation structure. Using population graphs, hypothetical scenarios were compared to explore the node selection process using the BRIDES algorithm. The results of these analyzes made it possible to point out specific populations of wood turtles, considering their importance for network connectivity. This could have not been predicted by using genetic diversity and distinctiveness estimates, node-based metrics, and node removal analysis for these populations. Thanks to genetics, this thesis brings new knowledge on the wood turtle, the reproductive strategies of both sexes, the gene flow, the connectivity and the influence of the hydrographic network on population diversity. These results allow us to have a better understanding of the processes affecting the genetic diversity of this species in order to better protect it. All analyses performed for this thesis are directly applicable to other long-lived species with overlapping generations.
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Libros sobre el tema "Wood turtle"

1

Heward, A. D. B. Wood turtle in New Brunswick. Saint John, N.B: New Brunswick Museum, 1994.

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2

Heward, A. D. B. La tortue des bois au Nouveau-Brunswick. Saint-Jean: Musée du Nouveau-Brunswick, 1994.

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3

Daigle, Claude. Inventaires de la tortue des bois au Québec: Rapport d'étape, années 1994 et 1995. Québec: Ministère de l'environnement et de la faune, Direction de la faune et des habitats, Service de la faune terrestre, 1996.

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4

ill, Tryon Leslie, ed. Toohy and Wood. New York: Atheneum, 1992.

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5

Nazarbaev, Nursultan. Abaĭ turaly sȯz =: Slovo ob Abae = Word on Abay. Almaty: "Rauan", 1995.

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6

Coenen, Elisabeth Maria. 'Word niet zoals wij!': De veranderende betekenis van onderwijs bij Turkse gezinnen in Nederland. Amsterdam: Het Spinhuis, 2001.

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7

Hendricks, P. Amphibian and reptile survey of the Bureau of Land Management Miles City District, Montana. Helena, Mont: Montana Natural Heritage Program, 1999.

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Buyer, Robert L. Carving sea life. Mechanicsburg, PA: Stackpole Books, 1995.

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9

Buyer, Robert L. Carving sea life. Mechanicsburg, PA: Stackpole Books, 1996.

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10

Buyer, Robert L. Carving sea life. Mechanicsburg, PA: Stackpole Books, 1995.

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Capítulos de libros sobre el tema "Wood turtle"

1

Carr, John y Alan Giraldo. "Rhinoclemmys nasuta (Boulenger 1902) – Large-Nosed Wood Turtle, Chocoan River Turtle". En Conservation Biology of Freshwater Turtles and Tortoises, 034.1–034.6. Chelonian Research Foundation, 2009. http://dx.doi.org/10.3854/crm.5.034.nasuta.v1.2009.

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Richotte, Keith. "Introduction". En Claiming Turtle Mountain's Constitution. University of North Carolina Press, 2017. http://dx.doi.org/10.5149/northcarolina/9781469634517.003.0001.

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On an otherwise pleasantly temperate day in the summer of 2009 I found myself trapped inside of a quiet, wood-paneled courtroom in Belcourt, North Dakota. I was on the Turtle Mountain Band of Chippewa Indians Reservation nervously awaiting an important argument before the tribal court. Like many who are called to court, I was afraid of an uncertain future and unsure of how the day’s events would unfold. Unlike many who are called to court, I was sitting in one of the judges’ seats....
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3

Vogt, Richard, Steven Platt y Thomas Rainwater. "Rhinoclemmys areolata (Duméril and Bibron 1851) – Furrowed Wood Turtle, Black-Bellied Turtle, Mojena." En Chelonian Research Monographs, 022.1–022.7. Chelonian Research Foundation, 2009. http://dx.doi.org/10.3854/crm.5.022.areolata.v1.2009.

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Angel Reyes-López, Miguel, Fátima Yedith Camacho-Sánchez, Catherine E. Hart, Valeria Leal-Sepúlveda, Kevin Alan Zavala-Félix, César Paúl Ley-Quiñónez, A. Alonso Aguirre y Alan Alfredo Zavala-Norzagaray. "Rediscovering Kemp’s Ridley Sea Turtle (Lepidochelys kempii): Molecular Analysis and Threats". En Natural History and Ecology of Mexico and Central America. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96655.

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Sea turtles are reptiles that have inhabited the earth for 100 million years. These are divided into 2 families (Cheloniidae and Dermochelyidae) and 7 species of sea turtles in the world: the leatherback turtle (Dermochelys coriacea); hawksbill turtle (Eretmochelys imbricata); Kemp’s ridley (Lepidochelys kempii); olive ridley (L. olivacea); Loggerhead turtle (Caretta caretta); flatback sea turtle (Natator depressus) and green turtle (Chelonia mydas). In particular, Kemp’s ridley is included in the red list of IUCN categorized as “critically endangered”. The most important site around the Word is in Rancho Nuevo, Tamaulipas, Mexico. Where 80–95% of the world’s nesting is concentrated. Other nesting areas are Tepeguajes and Barra del Tordo, in Tamaulipas, and with less intensity in Veracruz (Lechuguillas and El Raudal beaches) and South Padre Island, Texas, USA. They deposit an average of about 90 eggs and hatching takes 40 to 60 days. Therefore, they are vulnerable to different anthropogenic activities and sources of pollution, such as heavy metals, which can cause toxic effects that are harmful to the turtles, damage their physiology and health. To understand the real situation about health and genetic parameters it is necessary to analyze biochemical and molecular factors in this species.
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5

"The Ecology and Management of Wood in World Rivers". En The Ecology and Management of Wood in World Rivers, editado por C. ANDREW DOLLOFF y MELVIN L. WARREN. American Fisheries Society, 2003. http://dx.doi.org/10.47886/9781888569568.ch9.

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<em>Abstract.</em>—Many ecological processes are associated with large wood in streams, such as forming habitat critical for fish and a host of other organisms. Wood loading in streams varies with age and species of riparian vegetation, stream size, time since last disturbance, and history of land use. Changes in the landscape resulting from homesteading, agriculture, and logging have altered forest environments, which, in turn, changed the physical and biological characteristics of many streams worldwide. Wood is also important in creating refugia for fish and other aquatic species. Removing wood from streams typically results in loss of pool habitat and overall complexity as well as fewer and smaller individuals of both coldwater and warmwater fish species. The life histories of more than 85 species of fish have some association with large wood for cover, spawning (egg attachment, nest materials), and feeding. Many other aquatic organisms, such as crayfish, certain species of freshwater mussels, and turtles, also depend on large wood during at least part of their life cycles.
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6

Garlipp, Petra. "Koro—A Genital Retraction Syndrome". En Unusual and Rare Psychological Disorders, 167–76. Oxford University Press, 2016. http://dx.doi.org/10.1093/med:psych/9780190245863.003.0012.

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Koro involves the spurious belief that certain body parts, such as the penis in men and the vulva in women, are retracting into the body. The origin of the word, “koro,” is connected to the Malaysian term for the retracting of a turtle’s head. Upon complete retraction of the body part in question, death is the feared consequence. The first descriptions of koro-like symptoms (with some similarity to panic disorder symptomatology) can be found in ancient Chinese medical records that are over two thousand years old. Although koro is often thought to be a disorder associated with Asian populations, cases in other parts of the world have been regularly reported. Moreover, koro can occur as individualized cases or full-blown epidemics. Certain indigenous treatment practices can be dangerous, and several means of treating the possible conditions underlying koro are discussed.
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