Conserve Wildlife Blog

Posts Tagged ‘amphibian’

Exploring New Jersey’s Amphibian Migrations

Wednesday, March 27th, 2024

by Leah Wells, Wildlife Biologist

Wood Frogs

 On rainy spring evenings, have you ever encountered large numbers of salamanders and frogs crossing the road? Do you ever wonder where they came from and where they are going? New Jersey’s forests are home to a group of amphibians that breed in small, temporary wetlands called vernal pools. Within northern New Jersey, this group includes wood frogs, spotted salamanders, and Jefferson salamanders. 

These salamanders are elusive, often concealed under foliage, moss, or in burrows created by small creatures.  They belong to the Ambystomatidae family, earning the nickname “mole salamander” due to their subterranean tendencies. Feeding primarily at night on various invertebrates like earthworms and insects, they, along with wood frogs, play crucial roles in forest ecosystems as vital links in the food chain and are indicators of ecosystem health. Emerging from winter hibernation during rainy nights in late winter and early spring, they embark on journeys to vernal pools for mating and egg-laying, marking the onset of the amphibian migration. 

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Crossed One Off the Bucket List

Wednesday, March 8th, 2023

by Christine Healy, Wildlife Biologist

Every January, once the confetti has settled from the new year’s celebration, I start thinking a lot about amphibians and preparing for their springtime migration. That behavior, however, is not collectively adopted by all of our local frogs and salamanders. Different species have found different ways to adapt to the challenges of a complex lifecycle that relies on environmental factors to inform physiological changes. Wood frogs, as well as spotted and Jefferson salamanders, have conformed to an early spring breeding strategy. Once the ground thaws and snow melt has raised the water level in vernal pools, they are on the move. Since amphibians in temperate climates hibernate (or more correctly, brumate – the “cold-blooded” equivalent), you might think that their appearance in February and March means that they lead the pack. While this seems a reasonable assumption, it’s actually incorrect.

A close up of an adult Eastern tiger salamander
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Salamanders already on the move

Sunday, February 18th, 2018

by David Wheeler

Photo by David Moskowitz

The salamanders and frogs in East Brunswick got an early start to their migration season by crossing this week on February 15. David Moskowitz found spotted salamanders, wood frogs, dozens of spring peepers, and one wood frog crossing the temporarily closed section of Beekman Road in the early evening rain.

“This is the earliest they’ve ever moved – by about a week – in the 12 years I’ve been closing the road,” said Moskowitz.

East Brunswick has closed the road for a few nights each late winter/early spring when conditions are just right. While all amphibian species are vulnerable, spotted salamanders are a species of special concern in New Jersey.

 

Photo by David Moskowitz

Conserve Wildlife Foundation partners with certain municipalities and the Division of Fish and Wildlife’s Endangered and Nongame Species Program on salamander crossings in northern New Jersey. This is a key initiative among CWF’s amphibian projects.

The East Brunswick crossing offers the best opportunity for the public to take part and see these salamanders and frogs up close. Check their website for the next expected crossing and share the road with a salamander!

CWF’s Online Field Guide Expands

Monday, January 25th, 2016
23 WILDLIFE SPECIES ADDED TO CWF’S ONLINE FIELD GUIDE

By Michael Davenport, GIS Program Manager

Conserve Wildlife Foundation of NJ’s online field guide, a one-of-a-kind free reference focused on New Jersey’s wildlife, has recently expanded to include 23 additional species. As a result of recent status reviews by the state’s Endangered and Nongame Species Program for reptiles, amphibians, and butterflies, additional species within the state will be receiving an imperiled status of either Endangered, Threatened, or Special Concern. Six reptile species are being added as well as four amphibians and thirteen butterfly species.

Baltimore_Checkerspot_1

The Baltimore checkerspot, a species recently added to CWF’s on-line field guide. Photo courtesy of Eric C. Reuter.

Later this week, two additional blog entries will be posted regarding the status review process and the new listings. The posts will be: “Species Status Review process” (WEDNESDAY); and “How you can help fill-in data gaps” (FRIDAY).

The list of “new” species is below and each species name links to its field guide entry on our website:

REPTILES

AMPHIBIANS

BUTTERFLIES

NJ’s Frogs And Toads Are “Calling” For Your Help!

Tuesday, January 6th, 2015
Volunteers Wanted for CAMP project

By: Larissa Smith, Wildlife Biologist/Volunteer Manager with Conserve Wildlife Foundation

Northern Gray Treefrog @ M. Patterson

Northern Gray Treefrog @ M. Patterson

It’s the heart of the winter season and cold outside, so the furthest thing from your mind is hearing the calls of New Jersey’s frogs and toads. But now is the time when we start getting ready for the Calling Amphibian Project (CAMP) and thinking ahead to the spring of 2015.

 

The object of CAMP is to assess the distribution, abundance, and health of New Jersey’s amphibians. This is part of a larger initiative called the North American Amphibian Monitoring Program (NAAMP) and the data collected in New Jersey will be submitted into the National database. Volunteers participating in this project will be asked to conduct roadside surveys (after dusk) for calling amphibians along designated routes throughout the state. Each 15-mile route with ten stops will be surveyed three times during the Spring and a structured protocol will be followed to determine which nights to survey, how long to survey, which species are calling, and how to estimate the total number of individuals calling at each site.

 

In 2014, 24 volunteers participated in CAMP and surveyed a total of 23 routes out of 63. We have many dedicated long-term CAMP volunteers. Unfortunately due to different circumstances some can no longer participate so we currently have 37 routes available for the 2015 survey season. If you are interested in learning more about this project, contact Larissa Smith.

 

This year we will be holding a meeting for CAMP  volunteers in January. The meeting will be a good opportunity to meet other volunteers and the biologists who work on the this project and other amphibian projects. Biologists from CWF, the state ENSP and DLUR will be there to discuss  the two “new” NJ frog species and how CAMP data is being used by the state.