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Weiskopf SR, Shiklomanov AN, Thompson L, Wheedleton S, Campbell Grant EH. Winter severity affects occupancy of spring‐ and summer‐breeding anurans across the eastern United States. DIVERS DISTRIB 2022. [DOI: 10.1111/ddi.13620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Affiliation(s)
- Sarah R. Weiskopf
- U.S. Geological Survey National Climate Adaptation Science Center Reston Virginia USA
| | | | - Laura Thompson
- U.S. Geological Survey National Climate Adaptation Science Center Reston Virginia USA
| | - Sarah Wheedleton
- Smithsonian Conservation Commons Washington District of Columbia USA
| | - Evan H. Campbell Grant
- U.S. Geological Survey Eastern, Ecological Science Center Turners Falls Massachusetts USA
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2
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Identifying factors linked with persistence of reintroduced populations: Lessons learned from 25 years of amphibian translocations. Glob Ecol Conserv 2022. [DOI: 10.1016/j.gecco.2022.e02078] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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3
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van ’t Padje A, Bonfante P, Ciampi LT, Kiers ET. Quantifying Nutrient Trade in the Arbuscular Mycorrhizal Symbiosis Under Extreme Weather Events Using Quantum-Dot Tagged Phosphorus. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.613119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Given the current trends in climate change, extreme weather events are expected to increase in strength and frequency. Such events can impact species survival and species interactions. One of the most ubiquitous symbioses on earth is the nutrient exchange partnership between arbuscular mycorrhizal fungi and their host plants. While past work has shown that mycorrhizal fungi can help alleviate stress, it is unknown how phosphorus uptake by plants to fungi is affected by extreme weather events, such as flooding and heat waves. To test this response, we grewMedicago truncatulahost plants with or without mycorrhizal fungi and then exposed them to extreme weather treatments: increasing soil temperature by 12°C, or by flooding the plant roots for 7 days. We measured plant and fungal performance, and quantified phosphorus (P) uptake before and after extreme weather treatments using a technique in which we tagged apatite, a form of rock phosphorus, with fluorescing quantum-dots (QDs) nanoparticles. We then measured fluorescence in root and shoot tissue at harvest. We found that plants and arbuscular mycorrhizal fungi were affected by soil flooding, with plant survival, fungal colonization and QD-apatite uptake decreasing under flooded conditions. We did not see these negative effects in the heat treatment. While the presence of arbuscular mycorrhizal fungi affected plant biomass allocation, leading to an increase in shoot biomass, the symbiosis did not increase plant survival, total biomass or QD uptake in either treatment. More generally, we found host tissue contained roughly 80% more QD-apatite from the pre-treatment compared to the post-treatment nutrient injection. Future studies should focus on various plant-fungal combinations to create databases on which predictive models to extreme weather events can be constructed.
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Pilliod DS, Hausner MB, Scherer RD. From satellites to frogs: Quantifying ecohydrological change, drought mitigation, and population demography in desert meadows. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 758:143632. [PMID: 33218818 DOI: 10.1016/j.scitotenv.2020.143632] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/02/2020] [Accepted: 11/07/2020] [Indexed: 06/11/2023]
Abstract
Increasing frequency and severity of droughts have motivated natural resource managers to mitigate harmful ecological and hydrological effects of drought, but drought mitigation is an emerging science and evaluating its effectiveness is difficult. We examined ecohydrological responses of drought mitigation actions aimed at conserving populations of the Columbia spotted frog (Rana luteiventris) in a semi-arid valley in Nevada, USA. Abundance of this rare frog had declined precipitously after multiple droughts. Mitigation included excavating ponds to increase available surface water and installing earthen dams to raise water tables. We assessed responses of riparian vegetation to mitigation using a 30-year time series of satellite-derived Normalized Difference Vegetation Index (NDVI) and gridded weather data. We then analyzed a 23-year mark-recapture dataset to evaluate the effects of drought mitigation and NDVI on the probability of frog survival and rates of recruitment. After accounting for interannual precipitation variability, we found that NDVI increased significantly from before to after drought mitigation, suggesting that mitigation influenced the hydrology and vegetation of the meadows. Frog survival increased with NDVI, but mitigation had a stronger effect than NDVI suggesting that excavated mitigation ponds were particularly important for frog survival during drought. In contrast, frog recruitment was associated with NDVI more than mitigation, but only in meadows where NDVI was dependent on precipitation. At meadows with available groundwater, recruitment was associated with mitigation ponds. These findings suggest that mitigation ponds are critical for juvenile frogs to recruit into the adult population, but recruitment can also be increased by raising water tables in meadows lacking groundwater sources. Lagged recruitment (i.e., effects on larvae and juveniles) was negatively associated with NDVI. This study illustrates the ecohydrological complexity of drought mitigation and demonstrates novel ways to assess the effectiveness of drought mitigation using time series of readily available satellite imagery and organismal data.
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Affiliation(s)
- David S Pilliod
- U.S. Geological Survey, Forest and Rangeland Ecosystem Science Center, 970 Lusk Street, Boise, ID 83706, USA.
| | - Mark B Hausner
- Division of Hydrologic Sciences, Desert Research Institute, 2215 Raggio Pkwy, Reno, NV 89512, USA
| | - Rick D Scherer
- Conservation Science Partners, 5 Old Town Square, Suite 205, Fort Collins, CO 80524, USA
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5
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Swartz LK, Lowe WH, Muths EL, Hossack BR. Species‐specific responses to wetland mitigation among amphibians in the Greater Yellowstone Ecosystem. Restor Ecol 2019. [DOI: 10.1111/rec.13031] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Leah K. Swartz
- Wildlife Biology ProgramUniversity of Montana Missoula MT U.S.A
- Division of Biological SciencesUniversity of Montana Missoula MT U.S.A
| | - Winsor H. Lowe
- Division of Biological SciencesUniversity of Montana Missoula MT U.S.A
| | - Erin L. Muths
- U.S. Geological SurveyFort Collins Science Center Fort Collins CO U.S.A
| | - Blake R. Hossack
- U.S. Geological SurveyNorthern Rocky Mountain Science Center Missoula MT U.S.A
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6
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Abney CR, Balzer SW, Dueckman A, Baylis A, Clements DR. Early Spring and Early Vanishing Wetlands as Harbingers of the Future? The Climate Change Trap for Ephemeral Pond-Breeding Frogs. NORTHWEST SCIENCE 2019. [DOI: 10.3955/046.093.0105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Curtis R. Abney
- Department of Biological Sciences, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario, L2S 3A1, Canada
| | - Sterling W. Balzer
- Department of Biology, Trinity Western University, 7600 Glover Rd., Langley, British Columbia, V2Y 1Y1, Canada
| | - Ashley Dueckman
- Department of Biology, Trinity Western University, 7600 Glover Rd., Langley, British Columbia, V2Y 1Y1, Canada
| | - Andrew Baylis
- A Rocha Canada, 1620 192 Street, Surrey, British Columbia V3Z 9V2, Canada
| | - David R. Clements
- Department of Biology, Trinity Western University, 7600 Glover Rd., Langley, British Columbia, V2Y 1Y1, Canada
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Ray AM, Sepulveda AJ, Irvine KM, Wilmoth SKC, Thoma DP, Patla DA. Wetland drying linked to variations in snowmelt runoff across Grand Teton and Yellowstone national parks. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 666:1188-1197. [PMID: 30970484 DOI: 10.1016/j.scitotenv.2019.02.296] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 11/11/2018] [Accepted: 02/18/2019] [Indexed: 06/09/2023]
Abstract
In Grand Teton and Yellowstone national parks wetlands offer critical habitat and play a key role in supporting biological diversity. The shallow depths and small size of many palustrine wetlands in these protected areas and elsewhere make them vulnerable to changes in climate compared with larger and deeper aquatic habitats. Here, we use a simple water balance model to generate estimates of biophysical drivers of wetland change. We then examine the relationship between wetland inundation status and four principal drivers (i.e., temperature, precipitation, evapotranspiration, and runoff) spanning varying meteorological conditions over an 8-year time series from Grand Teton and Yellowstone national parks. We found that models containing snowmelt runoff outperformed models with other meteorological drivers and determined that a higher percentage of surveyed wetlands were dry in years characterized by lower runoff. Our work further shows that wetland drying was widespread across both parks, but sub-regional variations were best described at the hydrologic subbasin-level. Documenting the varying responses of wetlands to meteorological drivers is a necessary first step to identifying which subbasins are most sensitive to recent climatic change and contemplating how future change may alter the distribution of wetlands and their dependent taxa.
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Affiliation(s)
- Andrew M Ray
- National Park Service, Greater Yellowstone Inventory and Monitory Network, 2327 University Way, Suite 2, Bozeman, MT 59715, United States of America.
| | - Adam J Sepulveda
- U.S. Geological Survey, Northern Rocky Mountain Science Center, 2327 University Way, Suite 2, Bozeman, MT 59715, United States of America
| | - Kathryn M Irvine
- U.S. Geological Survey, Northern Rocky Mountain Science Center, 2327 University Way, Suite 2, Bozeman, MT 59715, United States of America
| | - Siri K C Wilmoth
- U.S. Geological Survey, Northern Rocky Mountain Science Center, 2327 University Way, Suite 2, Bozeman, MT 59715, United States of America
| | - David P Thoma
- National Park Service, Greater Yellowstone Inventory and Monitory Network, 2327 University Way, Suite 2, Bozeman, MT 59715, United States of America
| | - Debra A Patla
- Northern Rockies Conservation Cooperative, P.O. Box 2705, Jackson, WY 83001, United States of America
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Zylstra ER, Swann DE, Hossack BR, Muths E, Steidl RJ. Drought-mediated extinction of an arid-land amphibian: insights from a spatially explicit dynamic occupancy model. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2019; 29:e01859. [PMID: 30680832 DOI: 10.1002/eap.1859] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 11/28/2018] [Accepted: 12/21/2018] [Indexed: 06/09/2023]
Abstract
Understanding how natural and anthropogenic processes affect population dynamics of species with patchy distributions is critical to predicting their responses to environmental changes. Despite considerable evidence that demographic rates and dispersal patterns vary temporally in response to an array of biotic and abiotic processes, few applications of metapopulation theory have sought to explore factors that explain spatiotemporal variation in extinction or colonization rates. To facilitate exploring these factors, we extended a spatially explicit model of metapopulation dynamics to create a framework that requires only binary presence-absence data, makes few assumptions about the dispersal process, and accounts for imperfect detection. We apply this framework to 22 yr of biannual survey data for lowland leopard frogs, Lithobates yavapaiensis, an amphibian that inhabits arid stream systems in the southwestern United States and northern Mexico. Our results highlight the importance of accounting for factors that govern temporal variation in transition probabilities, as both extinction and colonization rates varied with hydrologic conditions. Specifically, local extinctions were more frequent during drought periods, particularly at sites without reliable surface water. Colonization rates increased when larval and dispersal periods were wetter than normal, which increased the probability that potential emigrants metamorphosed and reached neighboring sites. Extirpation of frogs from all sites in one watershed during a period of severe drought demonstrated the influence of site-level features, as frogs persisted only in areas where most sites held water consistently and where the amount of sediment deposited from high-elevation wildfires was low. Application of our model provided novel insights into how climate-related processes affected the distribution and population dynamics of an arid-land amphibian. The approach we describe has application to a wide array of species that inhabit patchy environments, can improve our understanding of factors that govern metapopulation dynamics, and can inform strategies for conservation of imperiled species.
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Affiliation(s)
- Erin R Zylstra
- School of Natural Resources and the Environment, University of Arizona, Tucson, Arizona, 85721, USA
| | - Don E Swann
- National Park Service, Saguaro National Park, Tucson, Arizona, 85730, USA
| | - Blake R Hossack
- U.S. Geological Survey, Northern Rocky Mountain Science Center, Missoula, Montana, 59801, USA
| | - Erin Muths
- U.S. Geological Survey, Fort Collins Science Center, Fort Collins, Colorado, 80526, USA
| | - Robert J Steidl
- School of Natural Resources and the Environment, University of Arizona, Tucson, Arizona, 85721, USA
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Gould WR, Ray AM, Bailey LL, Thoma D, Daley R, Legg K. Multistate occupancy modeling improves understanding of amphibian breeding dynamics in the Greater Yellowstone Area. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2019; 29:e01825. [PMID: 30403314 PMCID: PMC7017861 DOI: 10.1002/eap.1825] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 09/06/2018] [Accepted: 09/27/2018] [Indexed: 05/29/2023]
Abstract
Discerning the determinants of species occurrence across landscapes is fundamental to their conservation and management. In spatially and climatologically complex landscapes, explaining the dynamics of occurrence can lead to improved understanding of short- vs. long-term trends and offer novel insight on local vs. regional change. We examined the changes in occupancy for two species of anurans with different life histories over a decade using hundreds of wetland sites in Yellowstone and Grand Teton National Parks. To account for the joint dynamics of wetland drying and amphibian breeding, we adopted a multistate occupancy model as a means to investigate mechanistic relationships of observed occurrence patterns with climatological drivers of wetland hydrologic variability. This approach allowed us to decompose occupancy dynamics into habitat changes caused by wetland drying and amphibian breeding activity, conditional on available water and previous breeding state. Over our 10-yr time series, we observed considerable variability in climate drivers and the proportion of dry wetlands. Boreal chorus frogs (Pseudacris maculata) were more responsive to changes in wetland inundation status than Columbia spotted frogs (Rana luteiventris), as indicated by higher breeding colonization probabilities under favorable (wet) conditions. Both species had high probabilities of breeding persistence in permanently inundated wetlands with prior breeding. Despite the absence of multi-year drought in our time series, mechanistic relationships described here offer insights on how future climate variation may result in reduced and/or shifted occurrence patterns for pond-breeding anurans in the Greater Yellowstone Area. Further, our modeling approach may prove valuable in evaluating determinants of occurrence for other species that are dependent on wetlands or other dynamic habitats.
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Affiliation(s)
- William R. Gould
- Applied Statistics ProgramNew Mexico State UniversityBox 30001/MSC 3CQLas CrucesNew Mexico88003USA
| | - Andrew M. Ray
- National Park ServiceGreater Yellowstone Network2327 University Way, Suite 2BozemanMontana59715USA
| | - Larissa L. Bailey
- Department of Fish, Wildlife and Conservation Biology and the Graduate Degree Program in EcologyColorado State University1474 Campus Delivery, Fort CollinsColorado80523USA
| | - David Thoma
- National Park ServiceGreater Yellowstone Network2327 University Way, Suite 2BozemanMontana59715USA
- National Park ServiceNorthern Colorado Plateau Network2327 University Way, Suite 2BozemanMontana59715USA
| | - Rob Daley
- National Park ServiceGreater Yellowstone Network2327 University Way, Suite 2BozemanMontana59715USA
| | - Kristin Legg
- National Park ServiceGreater Yellowstone Network2327 University Way, Suite 2BozemanMontana59715USA
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10
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Sepulveda AJ. Novel application of explicit dynamics occupancy models to ongoing aquatic invasions. J Appl Ecol 2017. [DOI: 10.1111/1365-2664.13002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Adam J. Sepulveda
- Northern Rocky Mountain Science Center; US Geological Survey; Bozeman MT USA
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11
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Flynn LM, Kreofsky TM, Sepulveda AJ. Introduced American Bullfrog Distribution and Diets in Grand Teton National Park. NORTHWEST SCIENCE 2017. [DOI: 10.3955/046.091.0305] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Lauren M. Flynn
- US Geological Survey, Northern Rocky Mountain Science Center, 2327 University Way, Suite 2, Bozeman, Montana 59715
| | - Tess M. Kreofsky
- US Geological Survey, Northern Rocky Mountain Science Center, 2327 University Way, Suite 2, Bozeman, Montana 59715
| | - Adam J. Sepulveda
- US Geological Survey, Northern Rocky Mountain Science Center, 2327 University Way, Suite 2, Bozeman, Montana 59715
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12
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Rodhouse TJ, Sergeant CJ, Schweiger EW. Ecological monitoring and evidence‐based decision‐making in America's National Parks: highlights of the Special Feature. Ecosphere 2016. [DOI: 10.1002/ecs2.1608] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Affiliation(s)
- Thomas J. Rodhouse
- National Park Service Upper Columbia Basin Network 650 SW Columbia Street, Suite 7250 Bend Oregon 97702 USA
| | - Christopher J. Sergeant
- National Park Service Southeast Alaska Network 3100 National Park Road Juneau Alaska 99801 USA
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