Stream and riparian management for freshwater turtles

Bodie, J. Russell

doi:10.1006/jema.2001.0454

Cited by 115 publications

(105 citation statements)

References 56 publications

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“…For example, Burke and Gibbons (1995) suggested that a 73 m zone was necessary to protect 90% of nesting and hibernation sites used by three turtle species in a single Carolina Bay in South Carolina; however, our continent-wide study suggests a 4). Our results further corroborate the 150 m zone suggested by Bodie (2001) to protect riparian areas used by riverine turtles. Of riverine-associated genera, we estimate that a protected area of 150 m would protect approximately 95% or more of nesting Apalone, Macrochelys, Pseudemys and Graptemys (Table 4; note, our sample drew chiefly from riverine species of Apalone and Pseudemys, although some species in those genera are primarily lentic).…”

Section: Discussionsupporting

confidence: 88%

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Terrestrial habitat requirements of nesting freshwater turtles

Steen

Gibbs

Buhlmann

et al. 2012

Biological Conservation

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Because particular life history traits affect species vulnerability to development pressures, cross-species summaries of life history traits are useful for generating management guidelines. Conservation of aquatic turtles, many members of which are regionally or globally imperiled, requires knowing the extent of upland habitat used for nesting. Therefore, we compiled distances that nests and gravid females had been observed from wetlands. Based on records of > 8000 nests and gravid female records compiled for 31 species in the United States and Canada, the distances that encompass 95% of nests vary dramatically among genera and populations, from just 8 m forMalaclemys to nearly 1400 m for Trachemys. Widths of core areas to encompass varying fractions of nesting populations (based on mean maxima across all genera) were estimated as: 50% coverage = 93 m, 75% = 154 m, 90% = 198 m, 95% = 232 m, 100% = 942 m. Approximately 6-98 m is required to encompass each consecutive 10% segment of a nesting population up to 90% coverage; thereafter, ca. 424 m is required to encompass the remaining 10%. Many genera require modest terrestrial areas (zones) for 95% nest coverage (Actinemys, Apalone, Chelydra, Chrysemys, Clemmys,Glyptemys, Graptemys, Macrochelys, Malaclemys, Pseudemys, Sternotherus), whereas other genera require larger zones (Deirochelys, Emydoidea, Kinosternon, Trachemys). Our results represent planning targets for conserving sufficient areas of uplands around wetlands to ensure protection of turtle nesting sites, migrating adult female turtles, and dispersing turtle hatchlings. Our results represent planning targets for conserving sufficient areas of uplands around wetlands to ensure protection of turtle nesting sites, migrating adult female turtles, and dispersing turtle hatchlings.

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Section: Discussionsupporting

confidence: 88%

“…Terrestrial zones around wetlands are important for protecting wetland fauna during all life stages (Bodie, 2001;Semlitsch, 1998;Semlitsch and Bodie, 2003). Such areas are often termed "core areas" (rather than buffer zones, Crawford and Semlitsch, 2007;Semlitsch and Jensen, 2001).…”

Section: Introductionmentioning

confidence: 99%

Terrestrial habitat requirements of nesting freshwater turtles

Steen

Gibbs

Buhlmann

et al. 2012

Biological Conservation

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“…Hays et al (2001) had attributed the thermal variations in the several environments of the beaches to the albedo difference. Bodie (2001), in a compilation work, pointed out that most of the species of fresh water turtle prefer open and sandy beaches for the nesting and that they can seek alternative habitats, such as levees, when their traditional nesting places are not available. Raising of the river could put the eggs at risk, as pointed by Alho & Pádua (1982), for P. expansa and by Standing et al (1999), for Emydoidea blandingi.…”

Section: Discussionmentioning

confidence: 99%

Geological control of Podocnemis expansa and Podocnemis unifilis nesting areas in Rio Javaés, Bananal Island, Brazil

Júnior

Castro

2003

Acta Amaz.

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-The distribution of the nests of Podocnemis expansa (Amazon turtle) and Podocnemis unifilis (yellow-spotted side neck turtle) along the point bars of the Javaés River in Bananal Island, demonstrates a clear preference of these chelonians for differentiated geological environments, in respect to the morphology, grain size or height of the nests in relation to the level of the river. The topographical distribution and the differences in the grain size of the sediments that compose the point bars of the river, originated from the multiple sedimentary processes, and make possible the creation and separation of different nesting environments. Each turtle species takes advantage of the place that presents physiographic characteristics appropriate to the hatching success of their eggs. The superposition of the P. expansa and P. unifilis nest placement areas is rare. The P. expansa nests are concentrated on the central portion of the beaches where successive depositional sedimentary events produced sandy banks more than 3.3 m above the river water level. The P. unifilis nests are distributed preferentially in the upstream and downstream portions along the point bars where the sandy deposits rarely surpass 1.5 m at the moment of laying. P. expansa nests located on the beaches of fine to medium sized sand hatch in a mean of 68 days, while those incubated on beaches of medium to coarse sand size take a mean of 54 days to hatch. Key-words:Podocnemis, turtle, sediment, nesting place, incubation duration Controle geológico das áreas de nidificação de Podocnemis expansae Podocnemis unifilis no Rio Javaés, Ilha do Bananal, Brasil RESUMO -A distribuição das covas de Podocnemis expansa (tartaruga-da-amazônia) e Podocnemis unifilis (tracajá) ao longo das barras em pontal do rio Javaés na Ilha do Bananal, mostra uma clara preferência destes quelônios por ambientes geológicos diferenciados, seja em relação à morfologia, constituição granulométrica ou altura das covas em relação ao nível do rio. A compartimentação topográfica e as diferenças no tamanho dos sedimentos que compõem as barras em pontal, oriundas de processos sedimentares múltiplos, possibilita a criação e separação de ambientes de nidificação distintos. Cada espécie de quelônio se aproveita do local que apresenta características fisiográficas apropriadas à incubação de seus ovos, sendo rara a superposição das áreas de nidificação de P. expansa e P. unifilis. As covas de P. expansa concentram-se na porção central das praias onde sucessivos eventos de deposição produziram bancos arenosos com uma altura superior a 3,3 m em relação ao nível do rio. As covas de P. unifilis distribuem-se, preferencialmente, nas porções montante e jusante das barras em pontal onde os depósitos arenosos raramente ultrapassam 1,5 m de altura no momento da desova. Covas de P. expansa localizadas nas praias de areia fina a média eclodem, em média, em 68 dias ao passo que aquelas incubadas em praias de areia média a grossa levam, em média, 54 dias para eclodirem. Palavras-chave:Podocnemis,...

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“…However, elements of human-altered landscapes, such as lawns and gardens in residential and commercial areas, can be productive nesting habitats (Joyal et al 2001;Klemens 1993;Linck et al 1989;Marchand and Litvaitis 2004b). Taken together, these characteristics can influence population structure of turtle communities found in urban landscapes (Bodie 2001;Ryan et al 2008;Steen and Gibbs 2004). An understanding of spatial ecology and habitat use is therefore essential for the long-term persistence of these species in highly managed, urban ecosystems (Soule 1991).…”

Section: Conservation and Management Implications In Urban Landscapesmentioning

confidence: 99%

“…Collectively, these results emphasize the influence of human activities on the habitat use and movement of these turtle species in the Central Canal and highlight the significance of considering spatial ecology and habitat use of various riparian species in urban management designs. Management techniques incorporating connectivity of wetlands and large riparian buffer zones are ideal (Bodie 2001;Burke and Gibbons 1995;Marchand and Litvaitis 2004a, b;Rees et al 2009;Roe and Georges 2007;Semlitsch and Bodie 2003) and while many urban areas have instituted such provisions, the question remains how useful these practices are at maintaining and promoting species habitat association. Further research investigating life history and spatial use of turtles and other riparian species within an urban landscape is warranted in order to maintain and conserve these populations.…”

Section: Conservation and Management Implications In Urban Landscapesmentioning

confidence: 99%

Movement and habitat use of the snapping turtle in an urban landscape

et al. 2013

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In order to effectively manage urban habitats, it is important to incorporate the spatial ecology and habitat use of the species utilizing them. Our previous studies have shown that the distribution of upland habitats surrounding a highly urbanized wetland habitat, the Central Canal (Indianapolis, IN, USA) influences the distribution of map turtles (Graptemys geographica) and red-eared sliders (Trachemys scripta) during both the active season and hibernation. In this study we detail the movements and habitat use of another prominent member of the Central Canal turtle assemblage, the common snapping turtle, Chelydra serpentina. We find the same major upland habitat associations for C. serpentina as for G. geographica and T. scripta, despite major differences in their activity (e.g., C. serpentina do not regularly engage in aerial basking). These results reinforce the importance of recognizing the connection between aquatic and surrounding terrestrial habitats, especially in urban ecosystems.

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Stream and riparian management for freshwater turtles

Cited by 115 publications

References 56 publications

Terrestrial habitat requirements of nesting freshwater turtles

Terrestrial habitat requirements of nesting freshwater turtles

Geological control of Podocnemis expansa and Podocnemis unifilis nesting areas in Rio Javaés, Bananal Island, Brazil

Movement and habitat use of the snapping turtle in an urban landscape

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