Terrestrial Salamander Monitoring Project

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Presentation transcript:

Terrestrial Salamander Monitoring Project

Rationale for Fieldwork amphibians are powerful indicators of environmental health studies suggest that amphibians are declining world-wide

Target Species red-back salamanders lead-back salamanders

Incidental Species spotted salamanders blue-spotted salamanders marbled salamanders wood frogs garter snakes

Redback

Leadback (redback pictured for comparison)

Spotted Salamander

Marbled Salamander

Blue Spotted Salamander

Red Spotted Newt

Wood Frog

Garter Snake

terrestrial salamanders – general characteristics terrestrial salamanders (red-back and lead-back) have completely done away with their aquatic larval stage terrestrial salamander biomass may exceed biomass of all other vertebrate groups in temperate forests

terrestrial salamanders – specific characteristics extremely efficient at converting food to biomass longevity of 20 years low biotic potential, intense protection of young … reproductive strategy? no lungs – respire through skin, must avoid dessication cold-blooded territorial and aggressive

populations are impacted by … logging development and filling of wetlands insect defoliation soil disruption climate change

Are populations in decline? terrestrial salamanders are critical to forest biodiversity given their longevity and relatively low biotic potential, changes in population may indicate significant environmental changes underway

Fieldwork Protocol site selection target species artificial cover objects (ACO’s) transects

other variables that may affect population counts time of year time of day weather conditions - temperature - cloud cover - recent precipitation - relative humidity

how to handle salamanders avoid over-handling, the “baggie technique” detached tails body length tail length