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Video D source code 10,000th Hellbender Released Into the Wild
by Web Editor — published Aug 16, 2022 — last modified Jul 26, 2023 01:23 PM — filed under: , , , , , , , , ,
HELLBENDER HISTORY -- the 10,000th hellbender was recently released into an Ozark river in an effort to support a declining population for the endangered species. The Saint Louis Zoo, MDC and U.S. Fish and Wildlife Service have partnered together for nearly 20 years during this effort. Learn more in this short video.
Located in Online Training Resources / Webinars and Videos
10,000th Hellbender Released to the Wild
by Rhishja Cota — published Oct 24, 2022 — last modified Nov 03, 2023 09:39 PM — filed under: , , , , , , , , , , , , , , ,
The Saint Louis Zoo, Missouri Department of Conservation (MDC) and U.S. Fish and Wildlife Service (FWS) are celebrating a historic milestone in hellbender conservation in Missouri. As of August 2022, the total Saint Louis Zoo-raised endangered Ozark and eastern hellbenders released into the wild since 2008 now numbers over 10,000 individuals.
Located in News & Events / Eastern Hellbender News
2022 Was a Busy Year for the Working Lands for Wildlife Hellbender Program
by Kat Diersen — published Jan 30, 2023 — last modified Nov 03, 2023 09:36 PM — filed under: , , , , , , ,
2022 was a busy year for the Working Lands for Wildlife hellbender program.
Located in News & Events / Eastern Hellbender News
Are Hellbenders Found Downstream of the Ohio Train Derailment Really a Sign That the Water is Safe?
by Kat Diersen — published Mar 29, 2023 — last modified Nov 03, 2023 09:34 PM — filed under: , , , , , , , , , , ,
Ohio authorities have called the recent capture and release of two hellbenders downstream from the site of a train derailment and toxic chemical spill a 'positive discovery,' because hellbenders are an indicator of a healthy aquatic ecosystem, but the reality is more complicated.
Located in News & Events
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
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
File Troff document Fence Job Sheet
by Morgan Harris — published Jul 12, 2019 — last modified Jul 17, 2023 11:41 AM — filed under: , , , ,
NC Fence Job Sheet Installation Instructions
Located in Information Materials / NRCS Conservation Practices & Materials / Job Sheets
Field Day at Mountain Research Station
by Morgan Harris — published Jul 12, 2019 — last modified Nov 03, 2023 09:47 PM — filed under: , , , , , , , , ,
The Field Day at the Mountain Research Station in Waynesville, NC will be a great event for agricultural producers to get the latest updates on agricultural research and to see the latest and best available tools and equipment at the trade show. The NRCS Partner Biologists for the Hellbender Working Lands for Wildlife Initiative will be in attendance with information about the program. 
Located in News & Events / Eastern Hellbender Workshops