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Small lakes are important to local economies as sources of water supply and places of recreation. Commonly, lakes are considered more desirable for recreation if they are free of the thick weedy vegetation, often comprised of invasive species, that grows around the lake edge. This vegetation makes it difficult to launch boats and swim. In order to reduce this vegetation, a common technique in the Northeast and Midwest U.S. is a ‘winter drawdown’ . In a winter drawdown, the lake level is artificially lowered (via controls in a dam) during the winter to expose shoreline vegetation to freezing conditions, thereby killing them and preserving recreational value of the lake. However, this practice can impact both water...
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Tribal resource managers in the southwest U.S. are facing a host of challenges related to environmental change, including increasing temperatures, longer periods of drought, and invasive species. These threats are exacerbating the existing challenges of managing complex ecosystems. In a rapidly changing environment, resource managers need powerful tools and the most complete information to make the most effective decisions possible. Traditional Ecological Knowledge has enabled Indigenous peoples to adaptively manage and thrive in diverse environments for thousands of years, yet it is generally underutilized and undervalued, particularly in the context of western scientific approaches. Traditional Ecological...
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Project Overview Restoring grass-dominated landscapes into resilient forested ecosystems is a key strategy for addressing the growing risk of wildfire Hawaiʻi. However, conventional afforestation efforts typically require regular maintenance due to the persistent invasion of grasses in planted areas. In collaboration with Native Hawaiian Organizations, researchers supported by this Pacific Islands CASC project will test dense plantings of keystone species and intensive mulching, aiming to restore traditional agroforest ecosystems that support cultural practices and improve disaster mitigation. Public Summary With the growing threat of wildfires in Hawaiʻi, highlighted by recent events such as the Lahaina wildfires,...
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Project Overview The iconic grizzly bear of the Greater Yellowstone Ecosystem has exhibited a remarkable recovery in response to concerted conservation actions implemented since its listing as threatened under the Endangered Species Act in 1975. However, information regarding the potential effects and timing of climate change in conjunction with increasing human recreation and development will be important for future management of this population. Investigating these potential impacts and providing manager with a range of actionable options to mitigate their effects is the goal of this study. Researchers supported by this North Central project will use grizzly bear demographic and climate data to collaboratively...
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The Hawai‘i Drought Knowledge Exchange project has been successfully piloting three sets of formal collaborative knowledge exchanges between researchers and managers to co-produce customized, site specific drought data products to meet the needs of their partners. Through these pilots, knowledge co-production has demonstrated how active collaboration between researchers and managers in the design and production of data products can lead to more useful and accessible applications for drought planning and management. Resource managers have strongly embraced the need for better and more timely information on climate change, variability and drought, as these stressors exert a large and costly impact on resources...
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The populations of many forest birds have declined in recent decades due to loss of habitat area and degradation of habitat quality. Past land management has left the landscape of the heavily forested Appalachian Mountains with too little old growth as well as too few young, regenerating forests. This change in habitat structure has led to the listing of several forest birds as Species of Greatest Conservation Need. Active management is needed to maintain habitat for these species, but climate change may alter the kinds of management that are effective. Climate change is likely to affect forest structure – and bird habitat suitability – because of shifts in temperature, precipitation, and disturbance. While current...
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Indigenous knowledge systems, such as traditional ecological knowledge, contain climate observations and adaptation strategies reaching back millennia. These include methods for caring for our natural resources and relations, such as through drought resilient agriculture, soil, and water management practices. Despite a growing global recognition among researchers and resource managers of the value of Indigenous knowledges and practices for enhancing human capacity to adapt to climate change impacts, we face historic inequities that hinder cross-cultural knowledge exchange and innovation. This includes a tendency towards extractive research, accessing Indigenous knowledges without regarding Indigenous decision-making...
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The Hemlock Woolly Adelgid (HWA) is an insect causing extensive hemlock tree die-offs in the northeast, and a lack of information on climate adaptation practices is hindering effective forest management. With the overall goal of fostering resilient forests that support northeastern hemlock ecosystems and wildlife, researchers supported by this Northeast-CASC project will work with land managers to identify information gaps and to develop management plans and a decision support tool tailored to the specific ecological, economic, and cultural management goals of different forests. The Hemlock Woolly Adelgid (HWA) is an invasive insect that has caused extensive hemlock death from Georgia to Maine in many of the densest...
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Feral horse populations in the southwestern United States, including on tribal lands, are far above sustainable levels. This overpopulation poses threats to rangeland ecosystems as the feral horses compete with native species and livestock for limited resources – which likely will become even more limited with climate change. Researchers supported by this Southwest CASC project will partner with tribal agencies to generate reliable population size estimates of feral horse populations. These estimates are essential for tribal agencies to create effective management plans to protect rangelands. Overabundant feral horse populations are a major concern on southwestern rangelands because of their tendency to degrade...
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Project Overview Climate change threatens plants and animals across the US, making it important to have tools that can efficiently assess species’ vulnerabilities. In this project, CASC scientists and NatureServe are collaborating to update a popular Climate Change Vulnerability Index to include the latest scientific data, improved metrics, and new user-friendly technology. The tool will help state biologists and scientists prioritize conservation efforts, and in time for preparing updates to State Wildlife Action Plans that are due by 2025. Project Summary Climate change is impacting our nation’s plants and animals. To take preventative actions, public land managers need to know which species are most threatened,...
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Global concern of an “insect apocalypse” is fueling demand for large-scale, long-term studies of insect population dynamics. Butterflies associated with open habitat, like prairies and grasslands, have long been identified as species of concern in the Midwest. The iconic monarch butterfly, which serves as a flagship for both migration and insect conservation, is one such species of conservation concern and is currently under consideration for federal listing under the Endangered Species Act. Recent analyses suggest that common, widespread species may also be declining. Yet robust evidence for general declines is patchy and the causes are difficult to discern. Understanding the relative importance of climate, land...
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Riparian systems are critical to the human and ecological communities that interact with them. For the members of San Carlos Apache Tribe, this is particularly true, as riparian systems provide immense cultural and natural values such as ceremonial grounds and recreation areas. However, the riparian areas within the San Carlos Apache Reservation are at risk of degradation due to climate change and land use. Over the past several decades, invasive vegetation, changes in river discharge, and increased wildfire activity have continued to threaten the area’s riparian resources. This project aims to inform riparian restoration efforts by providing products that: identify historic vegetation and river channel properties,...
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This release consists of data collected from 26 plots in two national parks over a 19-year period. The data consists of plot-level seed counts for three genera, number of seed traps, live tree basal area, plot area, and climate metrics from the gridmet gridded data set, the daymet gridded data set, the PRISM gridded data set, and two nearby COOP stations.
This collaborative effort seeks conservation outcomes that address current and future threats to species’ persistence in the foothills in and around Yosemite NP. For instance, foothill yellow-legged frog and the western pond turtle have experienced significant population declines across the Southern extent of their respective historic range. Much of the decline is due to threats such as land use changes, changes in hydrology, competition and/or predation from introduced species, and disease [1;2]. While these threats already pose species conservation challenges at present, climate change will exasperate the risk to species’ persistence in this geography. To address both the current and future stressors to the foothill...
map background search result map search result map Seed Source, Not Drought, Determines Patterns of Seed Production in Sierra Nevada Conifers (ver. 2.0, January 2023) Exploring the Past to Plan for the Future: Integrating Indigenous Knowledge and Paleoperspectives to Inform Climate Change Adaptation Evaluating the Role of Climate on Midwestern Butterfly Trajectories, Monarch Declines, and the Broader “Insect Apocalypse” Rethinking Lake Management for Invasive Plants Under Future Climate: Sensitivity of Lake Ecosystems to Winter Water Level Drawdowns Scaling up the Hawai‘i Drought Knowledge Exchange: Expanding Stakeholder Reach and Capacity to Address Climate Change, Variability, and Drought Mapping Riparian Vegetation Response to Climate Change on the San Carlos Apache Reservation and Upper Gila River Watershed to Inform Restoration Priorities: 1935 to Present (Phase 1) Informing Climate-Adaptive Forest Management for Breeding Bird Habitat in the Southern Appalachians Shifting from Extractive to Self-determined: Enhancing Indigenous Research and Data Governance in Southwest Climate Adaptation Initiatives Informing Management Options for Grizzly Bears in a Changing Greater Yellowstone Ecosystem Climate Smart Forest Adaptation in the Wake of Hemlock Woolly Adelgid Developing a Next-Generation Climate Change Vulnerability Index in Support of Climate-Informed Natural-Resource Management Science-Driven Methods for Scaling Afforestation of Dry Grass-Dominated Landscapes Co-producing Robust Estimates of Feral Horses on Tribal Lands Seed Source, Not Drought, Determines Patterns of Seed Production in Sierra Nevada Conifers (ver. 2.0, January 2023) Science-Driven Methods for Scaling Afforestation of Dry Grass-Dominated Landscapes Informing Climate-Adaptive Forest Management for Breeding Bird Habitat in the Southern Appalachians Informing Management Options for Grizzly Bears in a Changing Greater Yellowstone Ecosystem Mapping Riparian Vegetation Response to Climate Change on the San Carlos Apache Reservation and Upper Gila River Watershed to Inform Restoration Priorities: 1935 to Present (Phase 1) Climate Smart Forest Adaptation in the Wake of Hemlock Woolly Adelgid Exploring the Past to Plan for the Future: Integrating Indigenous Knowledge and Paleoperspectives to Inform Climate Change Adaptation Shifting from Extractive to Self-determined: Enhancing Indigenous Research and Data Governance in Southwest Climate Adaptation Initiatives Scaling up the Hawai‘i Drought Knowledge Exchange: Expanding Stakeholder Reach and Capacity to Address Climate Change, Variability, and Drought Evaluating the Role of Climate on Midwestern Butterfly Trajectories, Monarch Declines, and the Broader “Insect Apocalypse” Co-producing Robust Estimates of Feral Horses on Tribal Lands Rethinking Lake Management for Invasive Plants Under Future Climate: Sensitivity of Lake Ecosystems to Winter Water Level Drawdowns Developing a Next-Generation Climate Change Vulnerability Index in Support of Climate-Informed Natural-Resource Management