Unburned habitat essential for amphibian breeding persistence following wildfire

Wildfire regimes are changing rapidly with widespread increase in the intensity, frequency, and duration of fire activity, especially in the western United States. Limited studies explore the impacts of wildfires on aquatic taxa and few focus on lentic habitats that are essential for amphibians, man...

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Main Authors: Larissa L. Bailey, Richard Henderson, Wendy A. Estes-Zumpf, Charles C. Rhoades, Ellie Miller, Dominique Lujan, Erin Muths
Format: Article
Language:English
Published: Elsevier 2025-01-01
Series:Global Ecology and Conservation
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Online Access:http://www.sciencedirect.com/science/article/pii/S2351989424005936
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author Larissa L. Bailey
Richard Henderson
Wendy A. Estes-Zumpf
Charles C. Rhoades
Ellie Miller
Dominique Lujan
Erin Muths
author_facet Larissa L. Bailey
Richard Henderson
Wendy A. Estes-Zumpf
Charles C. Rhoades
Ellie Miller
Dominique Lujan
Erin Muths
author_sort Larissa L. Bailey
collection DOAJ
description Wildfire regimes are changing rapidly with widespread increase in the intensity, frequency, and duration of fire activity, especially in the western United States. Limited studies explore the impacts of wildfires on aquatic taxa and few focus on lentic habitats that are essential for amphibians, many of which are of conservation concern. We capitalized on existing pre-fire surveys for anuran species and resurveyed a random subset of wetlands across a gradient of soil burn severity to investigate the short-term effects of wildfire on a relict population of wood frogs in the southern Rocky Mountains. We also investigated whether maps created to support rapid post-fire emergency response activities (i.e., United States Forest Service Burned Area Emergency Response program) accurately characterize soil burn severity around small habitat features (i.e., ponds) that serve as important amphibian breeding and rearing habitat. Soil burn severity reflects fire impacts on soil and surface organic layers, including vegetation loss and changes in soil structure and function. We found that wood frog (Lithobates sylvaticus) breeding persistence following fires was negatively influenced by the percentage of their terrestrial habitat (100 m buffer surrounding breeding ponds) that was burned. Wood frog colonization probability of previously unoccupied ponds was low (∼ 0.10) and unaffected by soil burn severity. Importantly, we found that remotely sensed data typically produced to predict flooding and erosion at broad (catchment) scales is a poor representation of the amount and variation in soil burn severity surrounding small habitat features, suggesting that additional field sampling is necessary to understand wildfire responses for species that rely on these small habitat features. Understanding short-term geographic- and species-specific variation in response to wildfires provides the basis to explore time to recovery (e.g., when wood frogs return to burned breeding sites) or to determine if declines in breeding distributions intensify over time.
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spelling doaj-art-8032212fd6de49beb29097ef6bc340e92025-01-23T05:27:00ZengElsevierGlobal Ecology and Conservation2351-98942025-01-0157e03389Unburned habitat essential for amphibian breeding persistence following wildfireLarissa L. Bailey0Richard Henderson1Wendy A. Estes-Zumpf2Charles C. Rhoades3Ellie Miller4Dominique Lujan5Erin Muths6Department of Fish, Wildlife, and Conservation Biology, Colorado State University, Fort Collins, CO 80523, United States; Graduate Degree Program in Ecology, Colorado State University, Fort Collins, CO 80523, United States; Corresponding author at: Department of Fish, Wildlife, and Conservation Biology, Colorado State University, Fort Collins, CO 80523, United States.Medicine Bow-Routt National Forest and Thunder Basin National Grassland, U S. Forest Service, Steamboat Springs, CO 80487, United StatesWyoming Game & Fish Department, Laramie, WY 82070, United StatesRocky Mountain Research Station, U S. Forest Service, Fort Collins, CO 80523, United StatesMedicine Bow-Routt National Forest and Thunder Basin National Grassland, U S. Forest Service, Steamboat Springs, CO 80487, United States; Trout Unlimited, PO Box 881762, Steamboat Springs, CO 80487, United StatesMedicine Bow-Routt National Forest and Thunder Basin National Grassland, U S. Forest Service, Steamboat Springs, CO 80487, United StatesUnited States Geological Survey, Fort Collins Science Center, Fort Collins, CO 80526 United StatesWildfire regimes are changing rapidly with widespread increase in the intensity, frequency, and duration of fire activity, especially in the western United States. Limited studies explore the impacts of wildfires on aquatic taxa and few focus on lentic habitats that are essential for amphibians, many of which are of conservation concern. We capitalized on existing pre-fire surveys for anuran species and resurveyed a random subset of wetlands across a gradient of soil burn severity to investigate the short-term effects of wildfire on a relict population of wood frogs in the southern Rocky Mountains. We also investigated whether maps created to support rapid post-fire emergency response activities (i.e., United States Forest Service Burned Area Emergency Response program) accurately characterize soil burn severity around small habitat features (i.e., ponds) that serve as important amphibian breeding and rearing habitat. Soil burn severity reflects fire impacts on soil and surface organic layers, including vegetation loss and changes in soil structure and function. We found that wood frog (Lithobates sylvaticus) breeding persistence following fires was negatively influenced by the percentage of their terrestrial habitat (100 m buffer surrounding breeding ponds) that was burned. Wood frog colonization probability of previously unoccupied ponds was low (∼ 0.10) and unaffected by soil burn severity. Importantly, we found that remotely sensed data typically produced to predict flooding and erosion at broad (catchment) scales is a poor representation of the amount and variation in soil burn severity surrounding small habitat features, suggesting that additional field sampling is necessary to understand wildfire responses for species that rely on these small habitat features. Understanding short-term geographic- and species-specific variation in response to wildfires provides the basis to explore time to recovery (e.g., when wood frogs return to burned breeding sites) or to determine if declines in breeding distributions intensify over time.http://www.sciencedirect.com/science/article/pii/S2351989424005936Burn severityWood frogLithobates sylvaticusOccupancyWetlands
spellingShingle Larissa L. Bailey
Richard Henderson
Wendy A. Estes-Zumpf
Charles C. Rhoades
Ellie Miller
Dominique Lujan
Erin Muths
Unburned habitat essential for amphibian breeding persistence following wildfire
Global Ecology and Conservation
Burn severity
Wood frog
Lithobates sylvaticus
Occupancy
Wetlands
title Unburned habitat essential for amphibian breeding persistence following wildfire
title_full Unburned habitat essential for amphibian breeding persistence following wildfire
title_fullStr Unburned habitat essential for amphibian breeding persistence following wildfire
title_full_unstemmed Unburned habitat essential for amphibian breeding persistence following wildfire
title_short Unburned habitat essential for amphibian breeding persistence following wildfire
title_sort unburned habitat essential for amphibian breeding persistence following wildfire
topic Burn severity
Wood frog
Lithobates sylvaticus
Occupancy
Wetlands
url http://www.sciencedirect.com/science/article/pii/S2351989424005936
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