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Organization D source code Ducks Unlimited
by Web Editor — published Jun 13, 2019 — last modified Jul 26, 2023 12:02 PM — filed under: , , , , , , , , , , , ,
Ducks Unlimited is the world's leader in wetlands and waterfowl conservation.
Located in LP Members / Organizations Search
Organization Eastern Brook Trout Joint Venture
by Matthew Cimitile — published Dec 12, 2012 — last modified May 27, 2024 04:18 PM — filed under: , , , , , , , ,
A diverse group of partners, including state fish and wildlife agencies, federal resource agencies, academic institutions and private sector conservation organizations are working to conserve Eastern brook trout and their habitats. Established as the Eastern Brook Trout Joint Venture (EBTJV), this Fish Habitat Partnership has already produced a range-wide population assessment of brook trout; completed extensive work that identifies key threats to brook trout and their habitats; and developed conservation strategies to protect, enhance and restore brook trout.
Located in LP Members / Organizations Search
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
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
First-of-Its-Kind Study Inventories New Mexican Beaver Dams
by Web Editor — published Jun 19, 2025 — last modified Jun 19, 2025 03:59 PM — filed under: , , , , ,
As part of Defenders of Wildlife’s beaver conservation initiative, a new survey, which has never been conducted in New Mexico, reveals an uneven distribution of beaver dams — and the sub-sequential ecological benefits — throughout the state. Commissioned by Defenders, the survey is a critical tool for the future of strategic beaver and water conservation New Mexico.
Located in News
FOREST REMOVAL AND THE CASCADE OF EFFECTS CORRESPONDING WITH AN OZARK HELLBENDER POPULATION DECLINE
by Max A.Nickerson, Amber L. Pitt, Joseph J. Tavano, Kirsten A. Hecht, and Joseph C. Mitchell — published Feb 10, 2023 — last modified Jul 26, 2023 01:39 PM — filed under: , , , , ,
Populations of the endangered Ozark Hellbender salamander (Cryptobranchus alleganiensis bishopi) in the North Fork of the White River (NFWR) in Missouri and other streams have declined precipitously in recent decades. Deforestation of the riparian and nearby upland habitat has corresponded with in-river habitat changes and other interacting stressors that coincide chronologically with the precipitous decline. We review the cascade of effects, including changes in water quality, benthic habitat, illegal and scientific harvesting, and introduced and reintroduced species occurrence that followed deforestation in the context of their impacts on hellbenders and relationship with other stressors such as climate change. In-river habitat changes since the 1960s include benthic microhabitat alterations associated with redistribution of gravel, siltation, and sedimentation and, in part, increases in nuisance vegetation, including periphyton. Deforestation of riparian and nearby upland habitats increased access and opportunities for human activities such as recreation, wildlife collection, and development. The subsequent degradation of stream habitat and water quality following deforestation reducedthe carrying capacity for the NFWR Ozark Hellbender population and had negative consequences on population health.
Located in Information Materials / Research / Peer-reviewed Science