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Image Pascal source code Bog Turtle Map
by Web Editor — published Jul 07, 2019 — last modified Sep 27, 2024 02:00 PM — filed under: , , , ,
WLFW Bog Turtle Focal Area
Located in Bog-Turtle-site-images
File Bog Turtle Wildlife Habitat Evaluation Guide (WHEG)
by Bridgett Costanzo — published Dec 11, 2024 — filed under: , , , , , ,
WLFW uses WHEGs to evaluation before and after conditions anticipated from a contract.
Located in Information Materials / NRCS Conservation Practices and Materials
Celebrating Bog Turtles During Wild Turtle Week
by Kat Diersen — published May 22, 2023 — last modified Nov 03, 2023 09:32 PM — filed under: , , , , , , , , , , ,
Wild Turtle Week gives us an opportunity to bring extra attention to turtles and our conservation efforts on their behalf.
Located in News & Webinars / Bog Turtle News
Chattanooga Zoo Announces Baby Hellbenders
by The Chattanoogan — published Feb 22, 2016 — last modified Nov 03, 2023 09:44 PM — filed under: , , , , , , , , , , ,
The Chattanooga Zoo announces the successful hatching of a group of Hellbender eggs collected from the wild here in East Tennessee.
Located in News & Events / Eastern Hellbender News
Story Cozying Up for Winter: The Bog Turtle’s Seasonal Slumber
by Brian Rhodes — published Jan 08, 2025 — last modified Jun 04, 2025 11:33 PM — filed under: , , , , ,
While we sip hot cocoa, these remarkable reptiles tuck themselves away, waiting for the warmth of spring to awaken their vibrant world again.
Located in Stories
Image Distribution of the American Black Duck
by Web Editor — published Aug 16, 2019 — last modified Apr 18, 2024 04:23 PM — filed under: , , , ,
Distribution of the American Black Duck. This species breeds locally South to the dashed line.
Located in Black-Duck-site-images
Product Effects of Habitat Alterations on Bog Turtles (Glyptemys muhlenbergii): A Comparison of Two Populations
by Rhishja Cota — published Nov 08, 2022 — last modified Jul 24, 2023 11:29 AM — filed under: , , , , , , , , , , , , ,
This study compared Bog Turtle population demography and habitat use from 1994 to 2009 at two sites in Massachusetts, USA: one site was managed for nonnative invasive species and natural succession (Site 1), and the other site was flooded from American Beaver (Castor canadensis) activity resulting in an expansion of nonnative invasive plants (Site 2).
Located in Information Materials / Research / Peer-reviewed Science
Environmental DNA improves Eastern Hellbender (Cryptobranchus alleganiensis alleganiensis) detection over conventional sampling methods
by Sean M. Wineland, Rachel F. Arrick, Shane M. Welch, Thomas K. Pauley, Jennifer J. Mosher, Joseph J. Apodaca, Max Olszack, Jeffrey N. Holmes, Jayme L. Waldron — published Feb 10, 2023 — last modified Jul 26, 2023 01:39 PM — filed under: , , , , ,
Effective conservation planning relies on accurate species detection. However, conventional sampling methods used for detecting rare and cryptic aquatic species suffer from low probabilities of detection. Environmental DNA (eDNA) has emerged as an innovative and powerful sampling tool for detecting aquatic species, with previous studies suggesting a detection advantage over conventional sampling. However, comparative studies often fail to consider the appropriate sampling frameworks to adequately compare sampling methodologies and account for the influence of environmental variables on eDNA detection probabilities. In this study, we paired two detection methods (eDNA and physical sampling) at 22 sites in West Virginia, USA, to compare the probability of detecting a cryptic, elusive, and imperiled species of giant salamander, the Eastern Hellbender (Cryptobranchus alleganiensis alleganiensis). We used a multimethod occupancy modeling framework to compare method‐specific detection probabilities using a suite of predictor variables based on environmental conditions thought to influence hellbender detection. We detected hellbenders at 19/22 sites using eDNA and at 13/22 sites using physical sampling methods. The best supported model indicated that detection probability for eDNA (0.84 ± 0.06) was three times higher than conventional methods (0.28 ± 0.07). Water turbidity was the best predictor of hellbender detection and negatively impacted our ability to detect eDNA. We failed to detect an association between eDNA concentration and hellbender catch per unit effort. Our study supports previous findings that suggest eDNA sampling methods greatly increase the probability of detecting aquatic species. However, with little known about the influence of environmental variables on eDNA detection, our results highlight the negative influence turbidity and other physiochemical factors have on eDNA detection and suggest that further research on eDNA detection in turbid environments is needed.
Located in Information Materials / Research / Peer-reviewed Science
File SIS package Evaluating artificial shelter arrays as a minimally invasive monitoring tool for the hellbender (Cryptobranchus alleganiensis)
by Morgan Harris — published Aug 10, 2020 — last modified Jul 26, 2023 01:32 PM — filed under: , , , , ,
Hellbenders Cryptobranchus alleganiensis are critically imperiled amphibians throughout the eastern USA. Rock-lifting is widely used to monitor hellbenders but can severely disturb habitat. We asked whether artificial shelter occupancy (the proportion of occupied shelters in an array) would function as a proxy for hellbender abundance and there by serve as a viable alternative to rock-lifting. We hypothesized that shelter occupancy would vary spatially in response to hellbender density, natural shelter density, or both, and would vary temporally with hellbender seasonal activity patterns and time since shelter deployment. We established shelter arrays (n = 30 shelters each) in 6 stream reaches and monitored them monthly for up to 2 yr. We used Bayesian mixed logistic regression and model ranking criteria to assess support for hypotheses concerning drivers of shelter occupancy. In all reaches, shelter occupancy was highest from June–August each year and was higher in Year 2 relative to Year 1. Our best-supported model indicated that the extent of boulder and bedrock (hereafter, natural shelter) in a reach mediated the relationship between hellbender abundance and shelter occupancy. More explicitly, shelter occupancy was positively correlated with abundance when natural shelter covered <20% of a reach, but uncorrelated with abundance when natural shelter was more abundant. While shelter occupancy should not be used to infer variation in hellbender relative abundance when substrate composition varies among reaches, we showed that artificial shelters can function as valuable monitoring tools when reaches meet certain criteria, though regular shelter maintenance is critical.
Located in Information Materials / Research / Artificial Nest Box Research
File Fence - CPS 382
by Morgan Harris — published Jul 12, 2019 — last modified Jul 17, 2023 11:38 AM — filed under: , , , ,
This practice facilitates the accomplishment of conservation objectives by providing a means to control movement of animals and people, including vehicles.
Located in Information Materials / NRCS Conservation Practices & Materials / Conservation Practices