Land Change Science Program

Publications

Listed here are the most recent publications, reports and articles by the Land Change Science program.

Filter Total Items: 584
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Year Published: 2021

Drought stress and hurricane defoliation influence mountain clouds and moisture recycling in a tropical forest

Mountain ranges generate clouds, precipitation, and perennial streamflow for water supplies, but the role of forest cover in mountain hydrometeorology and cloud formation is not well understood. In the Luquillo Experimental Forest of Puerto Rico, mountains are immersed in clouds nightly, providing a steady precipitation source to support the...

Scholl, Martha A.; Bassiouni, Maoya; Torres-Sanchez, Angel J.

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Year Published: 2021

Identification of Global Priorities for New Mountain Protected and Conserved Areas

Mountain ecosystems are extremely diverse and fragile. They include astonishing biodiversity in terms of number of taxa and endemicity, and globally provide the most diverse range of ecosystem services. The world’s system of protected and conserved areas includes many outstanding areas within the earth’s mountainous landscape: about 19% of...

Jacobs, Peter; Beever, Erik A.; Carbutt, Clinton; Foggin, Marc; Juffe-Bignoli, Diego; Martin, Madeline Thomas; Orchard, Shane; Sayre, Roger

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Year Published: 2021

Carbon stock losses and recovery observed for a mangrove ecosystem following a major hurricane in Southwest Florida

Studies integrating mangrove in-situ observations and remote sensing analysis for specific sites often lack precise estimates of carbon stocks over time frames that include disturbance events. This study quantifies change in mangrove area from 1985 to 2018 with Landsat time series analysis, estimates above and belowground stored carbon...

Peneva-Reed, Elitsa I.; Krauss, Ken; Bullock, Eric L.; Zhu, Zhiliang; Woltz, Victoria; Drexler, Judith Z.; Conrad, Jeremy R.; Stehman, Stephen V

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Year Published: 2020

The geography of islands

Islands come in all shapes, sizes and types, from tiny rocky outcrops, to enormous continental landmasses. The true number of islands distributed in the planet’s seas and oceans is still elusive. Recent efforts bolstered by an abundance of detailed satellite imagery and the sophistication of geographic information systems (GIS) are bringing real...

Sayre, Roger; Martin, Madeline Thomas; Cress, Jill Janene; Holmes, N.; McDermott-Long, O.; Spatz, D.; VanGraafeiland, K.; Weatherdon, L.; Will, D.

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Year Published: 2020

Solar and sensor geometry, not vegetation response, drive satellite NDVI phenology in widespread ecosystems of the western United States

Satellite-derived phenology metrics are valuable tools for understanding broad-scale patterns and changes in vegetated landscapes over time. However, the extraction and interpretation of phenology in ecosystems with subtle growth dynamics can be challenging. US National Park Service monitoring of evergreen pinyon-juniper ecosystems in the western...

Norris, Jodi R.; Walker, Jessica J.

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Year Published: 2020

Boreal blazes: Biomass burning and vegetation types archived in the Juneau Icefield

The past decade includes some of the most extensive boreal forest fires in the historical record. Warming temperatures, changing precipitation patterns, the desiccation of thick organic soil layers, and increased ignition from lightning all contribute to a combustive combination. Smoke aerosols travel thousands of kilometers, before blanketing the...

Kehrwald, Natalie; Jasmann, Jeramy Roland; Dunham, Melissa E.; Ferris, David G.; Osterburg, Erich C.; Kennedy, Joshua; Havens, Jeremy; Barber, Larry; Fortner, Sarah K.

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Year Published: 2020

Modelling marsh-forest boundary transgression in response to storms and sea-level rise

The lateral extent and vertical stability of salt marshes experiencing rising sea levels depend on interacting drivers and feedbacks with potential for non‐linear behaviors. A two‐dimensional transect model was developed to examine changes in marsh and upland forest lateral extent and to explore controls on marsh inland transgression. Model...

Carr, Joel A.; Guntenspergen, Glenn R.; Kirwan, Matthew

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Year Published: 2020

Generalized models to estimate carbon and nitrogen stocks of organic soil horizons in Interior Alaska

Boreal ecosystems comprise one tenth of the world’s land surface and contain over 20 % of the global soil carbon (C) stocks. Boreal soils are unique in that its mineral soil is covered by what can be quite thick layers of organic soil. These organic soil layers, or horizons, can differ in their state of decomposition, source vegetation, and...

Manies, Kristen L.; Waldrop, Mark; Harden, Jennifer W.

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Year Published: 2020

Application of empirical land-cover changes to construct climate change scenarios in federally managed lands

Sagebrush-dominant ecosystems in the western United States are highly vulnerable to climatic variability. To understand how these ecosystems will respond under potential future conditions, we correlated changes in National Land Cover Dataset “Back-in-Time” fractional cover maps from 1985-2018 with Daymet climate data in three federally managed...

Soulard, Christopher E.; Rigge, Matthew B.

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Year Published: 2020

Height-related changes in forest composition, not tree vulnerability, explain increasing mortality with height during an extreme drought

Recently, Stovall et al.1 (hereafter SSY) showed that during an extreme drought, remotely sensed mortality of tall trees was more than double that of short trees. They interpreted this to be a consequence of inherently greater hydraulic vulnerability of tall trees, and suggested that tall-tree vulnerability should thus generalize more broadly....

Stephenson, Nathan L.; Das, Adrian

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Year Published: 2020

The role of warm, dry summers and variation in snowpack on phytoplankton dynamics in high-elevation lakes

Abstract Climate change is altering biogeochemical, metabolic, and ecological functions in lakes across the globe. Historically, mountain lakes in temperate regions have been unproductive due to brief ice-free seasons, a snowmelt-driven hydrograph, cold temperatures, and steep topography with low vegetation and soil cover. We tested the relative...

Oleksy, Isabella A.; Beck, Whitney; Lammers, R.; Steger, Cara; Wilson, Cody; Christensen, Kyle; Vincent, Kim; Johnson, Pieter; Baron, Jill

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Year Published: 2020

Wildfire-driven changes in hydrology mobilize arsenic and metals from legacy mine waste

Wildfires burning in watersheds that have been mined and since revegetated pose unique risks to downstream water supplies. A wildfire near Boulder, Colorado that burned a forested watershed recovering from mining disturbance that occurred 80-160 years ago allowed us to 1) assess arsenic and metal contamination in streams draining the burned area...

Murphy, Sheila F.; McCleskey, R. Blaine; Martin, Deborah A.; Holloway, JoAnn; Writer, Jeffrey H.