Výsledky vyhledávání - "Thomas S. Ruzycki"

Akademický článek

Multiscale predictors of small tree survival across a heterogeneous tropical landscape

Autor: Eileen H. Helmer, Shannon Kay, Humfredo Marcano-Vega, Jennifer S. Powers, Tana E. Wood, Xiaolin Zhu, David Gwenzi, Thomas S. Ruzycki

Publikováno v: PLoS ONE, Vol 18, Iss 3 (2023)

Uncertainties about controls on tree mortality make forest responses to land-use and climate change difficult to predict. We tracked biomass of tree functional groups in tropical forest inventories across Puerto Rico and the U.S. Virgin Islands, and

Externí odkaz: https://doaj.org/article/ca6f3e58062d4f738989f9a98e709e60

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Akademický článek

Tropical Deforestation and Recolonization by Exotic and Native Trees: Spatial Patterns of Tropical Forest Biomass, Functional Groups, and Species Counts and Links to Stand Age, Geoclimate, and Sustainability Goals

Autor: Eileen H. Helmer, Thomas S. Ruzycki, Barry T. Wilson, Kirk R. Sherrill, Michael A. Lefsky, Humfredo Marcano-Vega, Thomas J. Brandeis, Heather E. Erickson, Bonnie Ruefenacht

Publikováno v: Remote Sensing, Vol 10, Iss 11, p 1724 (2018)

We mapped native, endemic, and introduced (i.e., exotic) tree species counts, relative basal areas of functional groups, species basal areas, and forest biomass from forest inventory data, satellite imagery, and environmental data for Puerto Rico and

Externí odkaz: https://doaj.org/article/edaf436ca0054d888436365eadeae21d

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Neotropical cloud forests and páramo to contract and dry from declines in cloud immersion and frost

Autor: Shannon M. Voggesser, E. H. Helmer, L. Scott Baggett, Benjamin J. Bird, E. A. Gerson, Thomas S. Ruzycki

Publikováno v: PLOS ONE. 14:e0213155

Clouds persistently engulf many tropical mountains at elevations cool enough for clouds to form, creating isolated areas with frequent fog and mist. Under these isolated conditions, thousands of unique species have evolved in what are known as tropic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66770526c43f839969a8388b6bff21fc
https://doi.org/10.1371/journal.pone.0213155

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Validation of the Unit Stream Power Erosion and Deposition (USPED) Model at Yakima Training Center, Washington

Autor: Steven D. Warren, Thomas S. Ruzycki, Peter E. Nissen, Robert Vaughan

Publikováno v: Northwest Science. 92:338

During the last seventy years, numerous models have been developed to predict soil erosion; some models also predict concomitant sediment deposition. All have been proven inadequate and/or inaccurate in one respect or another. This paper discusses th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4a4b637e3e6f2a76de98bece0bc36783
https://doi.org/10.3955/046.092.0504

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Detailed maps of tropical forest types are within reach: Forest tree communities for Trinidad and Tobago mapped with multiseason Landsat and multiseason fine-resolution imagery

Autor: Courtenay Park, Thomas S. Ruzycki, Eileen H. Helmer, Seepersad. Ramnarine, Barbara P. Scobie, David W. Fanning, Shannon M. Voggesser, Jay Benner

Publikováno v: Forest Ecology and Management. 279:147-166

Tropical forest managers need detailed maps of forest types for REDD+, but spectral similarity among forest types; cloud and scan-line gaps; and scarce vegetation ground plots make producing such maps with satellite imagery difficult. How can manager

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8bb7cc97435190a7259bcfc0750e746f
https://doi.org/10.1016/j.foreco.2012.05.016

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Autor: Bonnie Ruefenacht, Barry T. Wilson, Kirk R. Sherrill, Eileen H. Helmer, Heather E. Erickson, Michael A. Lefsky, Thomas J. Brandeis, Thomas S. Ruzycki, Humfredo Marcano-Vega

Publikováno v: Remote Sensing, Vol 10, Iss 11, p 1724 (2018)
Remote Sensing; Volume 10; Issue 11; Pages: 1724

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::678c90c4ed9038a99e85e85747aa435a
https://doi.org/10.3390/rs10111724

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Mapping tropical dry forest height, foliage height profiles and disturbance type and age with a time series of cloud-cleared Landsat and ALI image mosaics to characterize avian habitat

Autor: Thomas S. Ruzycki, Eileen H. Helmer, Jr. Joseph M. Wunderle, Shannon Vogesser, Bonnie Ruefenacht, David N. Ewert, Charles Kwit, Thomas J. Brandeis

Publikováno v: Remote Sensing of Environment. 114:2457-2473

Remote sensing of forest vertical structure is possible with lidar data, but lidar is not widely available. Here we map tropical dry forest height (RMSE = 0.9 m, R2 = 0.84, range 0.6–7 m), and we map foliage height profiles, with a time series of L

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cf7e99839e506f6cb777ab5892f8f480
https://doi.org/10.1016/j.rse.2010.05.021

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