A Radiotelemetric Study of Activity and Movements of the Blanding's Turtle (Emydoidea blandingi) in Northeastern Illinois

Rowe, John W.; Moll, Edward O.

doi:10.2307/1564646

Cited by 81 publications

(55 citation statements)

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“…Mean home range length of Blanding's turtles across their range varies from 680 to 985 m (Table 3). Maximum home range length for the species has been recorded as 3.1 km in Minnesota (Piepgras and Lang, 2000), 800 m in Illinois (Rowe and Moll, 1991), >2 km in Maine (Joyal, 1996) and 3.2 km in this study.…”

Section: Discussionsupporting

confidence: 45%

“…Blanding's turtles (Emydoidea blandingii) are medium-sized, semi-aquatic turtles that utilize habitats in lakes, ponds, rivers, streams, marshes, vernal pools, bogs, fens, and sloughs (Graham and Butler, 1993;Graham and Doyle, 1977;Herman et al, 1994;Joyal et al, 2001;Pappas and Brecke, 1992;Ross and Anderson, 1990; Rowe and Moll, 1991). The core of the Blanding's turtle distribution is located in the Great Lakes region and continues west into Nebraska (Ernst et al, 1994).…”

Section: Introductionmentioning

confidence: 99%

“…Home range, the area traversed by an individual in its normal activities of food gathering, mating, and caring for young (Burt, 1943), and movement lengths (Home Range Length), the distance between the two most widely separated locations for an individual (Pluto and Bellis, 1988), have received little attention in developing landscapes. Past studies of Blanding's turtle home range and movement patterns have been conducted at large sites, such as in Minnesota (Piepgras and Lang, 2000), and small sites, such as in Illinois, Wisconsin, and Maine (Joyal, 1996;Ross and Anderson, 1990;Rowe and Moll, 1991).…”

Section: Introductionmentioning

confidence: 99%

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Movement patterns of Blanding's turtles (Emydoidea blandingii) in the suburban landscape of eastern Massachusetts

Grgurovic

Sievert

2005

Urban Ecosyst

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We studied Blanding's turtle (Emydoidea blandingii) home range and seasonal movement patterns at 10 sites in suburban eastern Massachusetts during 2001 and 2002. Radio telemetry was used to track 51 turtles (31 females and 20 males) and home range was estimated during 4 seasonal activity periods using the 95% fixed kernel estimator. Sex, year, and site were not found to affect home range size due to the large amount of variation between and within individuals. There were significant differences in home range length between activity periods, with longest movements occurring during the period of 15 April to 31 May as animals moved to ephemeral wetlands. Mean annual home range size for Blanding's turtles was 22 ha, and mean home range length was 856 m. Animals frequently had annual home ranges that overlapped little from year to year, indicating that our calculations greatly underestimate the lifetime home range of an individual. Due to the large area needs of Blanding's turtles, and the diversified ownership of lands in eastern Massachusetts, numerous stakeholders will need to be involved to effectively protect viable populations for the foreseeable future.

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Section: Discussionsupporting

confidence: 45%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Movement patterns of Blanding's turtles (Emydoidea blandingii) in the suburban landscape of eastern Massachusetts

Grgurovic

Sievert

2005

Urban Ecosyst

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“…Given the patterns of movement (Hall and Cuthbert 2000;Joyal et al 2001;Piepgras and Lang 2000;Ross and Anderson 1990;Rowe and Moll 1991) and habitat use (Bury and Germano 2003;Joyal et al 2001;Kiviat 1997;Power 1989;Ross and Anderson 1990; Rubin et al 2001a) in this species it is unlikely that there is current gene flow between them and other sampled populations. Even in Nova Scotia the size of the overall population does not likely exceed 500 individuals and, while there is limited current gene flow among the three population segments in Nova Scotia (Mockford et al 2005), current gene flow between the Nova Scotia populations and any other population is extremely unlikely.…”

Section: Distribution Of Genetic Variationmentioning

confidence: 94%

Conservation genetics of Blanding’s turtle and its application in the identification of evolutionarily significant units

et al. 2006

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Blanding's turtle is a North American freshwater turtle whose main range occurs south of the Great Lakes; disjunct populations occur east of the Appalachian Mountains from New York to Nova Scotia. The species is listed as threatened or endangered in most of its range. We employed five variable microsatellites to examine samples of 300 individuals in 12 populations. Estimates of F ST based on pairwise comparisons of populations ranged from 0.000 to 0.465. Phylogenetic analysis of these F ST values reveals that the Appalachian Mountains and the Hudson River appear to present major barriers to gene flow in Blanding's turtle. The extent of fine-scale genetic structure previously reported in the Nova Scotian populations was not found in other parts of the species' range. We recommend that populations separated by the Appalachian Mountains as well as the highly disjunct Nova Scotian populations of Blanding's turtle be recognized as evolutionarily significant units.

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“…Two scales of mapping were conducted: a broader scale to discriminate potential wetlands from other land cover types, and a finer scale to map water, vegetation patches, and logs within wetlands. These are among the most important single indicators of habitat and life cycle activities of the Blanding's turtle [10,11,13,14,21] At the broader wetland scale, many previously unmapped wetlands were detected and delineated. Figure 10 shows an example of such a wetland, that had a high potential habitat score, and at which a Blanding's turtle was observed by the authors.…”

Section: Discussionmentioning

confidence: 99%

Blanding’s Turtle (Emydoidea blandingii) Potential Habitat Mapping Using Aerial Orthophotographic Imagery and Object Based Classification

Barker

King

2012

Remote Sensing

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Blanding's turtle (Emydoidea blandingii) is a threatened species under Canada's Species at Risk Act. In southern Québec, field based inventories are ongoing to determine its abundance and potential habitat. The goal of this research was to develop means for mapping of potential habitat based on primary habitat attributes that can be detected with high-resolution remotely sensed imagery. Using existing spring leaf-off 20 cm resolution aerial orthophotos of a portion of Gatineau Park where some Blanding's turtle observations had been made, habitat attributes were mapped at two scales: (1) whole wetlands; (2) within wetland habitat features of open water, vegetation (used for camouflage and thermoregulation), and logs (used for spring sun-basking). The processing steps involved initial pixel-based classification to eliminate most areas of non-wetland, followed by object-based segmentations and classifications using a customized rule sequence to refine the wetland map and to map the within wetland habitat features. Variables used as inputs to the classifications were derived from the orthophotos and included image brightness, texture, and segmented object shape and area. Independent validation using field data and visual interpretation showed classification accuracy for all habitat attributes to be generally over 90% with a minimum of 81.5% for the producer's accuracy of logs. The maps for each attribute were combined to produce a habitat suitability map for Blanding's turtle. Of the 115 existing turtle observations, 92.3% were closest to a wetland of the two highest suitability classes. High-resolution imagery combined with object-based classification and habitat suitability mapping methods such as those presented provide a much more spatially OPEN ACCESSRemote Sens. 2012, 4 195 explicit representation of detailed habitat attributes than can be obtained through field work alone. They can complement field efforts to document and track turtle activities and can contribute to species inventory planning, conservation, and management.

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A Radiotelemetric Study of Activity and Movements of the Blanding's Turtle (Emydoidea blandingi) in Northeastern Illinois

Cited by 81 publications

References 0 publications

Movement patterns of Blanding's turtles (Emydoidea blandingii) in the suburban landscape of eastern Massachusetts

Movement patterns of Blanding's turtles (Emydoidea blandingii) in the suburban landscape of eastern Massachusetts

Conservation genetics of Blanding’s turtle and its application in the identification of evolutionarily significant units

Blanding’s Turtle (Emydoidea blandingii) Potential Habitat Mapping Using Aerial Orthophotographic Imagery and Object Based Classification

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