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- The study explores use of the Ecosystem Management Decision Support (EMDS) System to standardize the process of allocating Management Areas for Fire Suppression Support (MASSs) in Catalonia, Spain. MASSs are defined as those areas in the landscape that change fire behavior, reducing the magnitude of the wildfire, and improve significantly fire suppression effectiveness/capacity. Considerations for allocating MASSs include high likelihood of large fires in the vicinity, potential for spread, proximity of the location to valuable resources at risk, proximity to adequate water supply,...AuthorsJosé Ramón Gonzalez-Olabarria, Keith M. Reynolds, Asier Larrañaga, Jordi Garcia-Gonzalo, Eduard Busquets, Miriam PiqueKeywordsSourceForest Ecology and Management. 432: 612-622.Year2018
- Although a natural ecological process, wildfire in unhealthy forests can be uncharacteristically destructive. Fuel treatments—such as thinning, mowing, prescribed fire, or managed wildfire—can help reduce or redistribute the flammable fuels that threaten to carry and intensify fire. Using both field-tested data and computer simulations, Pacific Northwest Research Station scientists are addressing critical questions such as Are we treating enough of the landscape to restore fire-adapted forests? Are fuel treatments effective at changing fire behavior? Together with land managers, fuel...AuthorsRachel White, Morris C. Johnson, Nicole M. Vaillant, Jeremy S. FriedKeywordsSourceScience Update 25. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 15 p.Year2018
- Motivation: The Tundra Trait Team (TTT) database includes field‐based measurements of key traits related to plant form and function at multiple sites across the tundra biome. This dataset can be used to address theoretical questions about plant strategy and trade‐offs, trait–environment relationships and environmental filtering, and trait variation across spatial scales, to validate satellite data, and to inform Earth system model parameters. Main types of variable contained: The database contains 91,970 measurements of 18 plant traits. The most frequently measured traits (> 1,000 observati...AuthorsAnne D. Bjorkman, Isla H. Myers-Smith, Sarah C. Elmendorf, Signe Normand, Haydn J. D. Thomas, Juha M. Alatalo, Heather Alexander, Alba Anadon-Rosell, Sandra Angers-Blondin, Yang Bai, Gaurav Baruah, Mariska te Beest, Logan Berner, Robert G. Björk, Daan Blok, Helge Bruelheide, Agata Buchwal, Allan Buras, Michele Carbognani, Katherine Christie, Laura S. Collier, Elisabeth J. Cooper, J. Hans C. Cornelissen, Katharine J. M. Dickinson, Stefan Dullinger, Bo Elberling, Anu Eskelinen, Bruce C. Forbes, Esther R. Frei, Maitane Iturrate-Garcia, Megan K. Good, Oriol Grau, Peter Green, Michelle Greve, Paul Grogan, Sylvia Haider, Tomáš Hájek, Martin Hallinger, Konsta Happonen, Karen A. Harper, Monique M. P. D. Heijmans, Gregory H. R. Henry, Luise Hermanutz, Rebecca E. Hewitt, Robert D. Hollister, James Hudson, Karl Hülber, Colleen M. Iversen, Francesca Jaroszynska, Borja Jiménez-Alfaro, Jill Johnstone, Rasmus Halfdan Jorgensen, Elina Kaarlejärvi, Rebecca Klady, Jitka Klimešová, Annika Korsten, Sara Kuleza, Aino Kulonen, Laurent J. Lamarque, Trevor Lantz, Amanda Lavalle, Jonas J. Lembrechts, Esther Lévesque, Chelsea J. Little, Miska Luoto, Petr Macek, Michelle C. Mack, Rabia Mathakutha, Anders Michelsen, Ann Milbau, Ulf Molau, John W. Morgan, Martin Alfons Mörsdorf, Jacob Nabe-Nielsen, Sigrid Schøler Nielsen, Josep M. Ninot, Steven F. Oberbauer, Johan Olofsson, Vladimir G. Onipchenko, Alessandro Petraglia, Catherine Pickering, Janet S. Prevey, Christian Rixen, Sabine B. Rumpf, Gabriela Schaepman-Strub, Philipp Semenchuk, Rohan Shetti, Nadejda A. Soudzilovskaia, Marko J. Spasojevic, James David Mervyn Speed, Lorna E. Street, Katharine Suding, Ken D. Tape, Marcello Tomaselli, Andrew Trant, Urs A. Treier, Jean-Pierre Tremblay, Maxime Tremblay, Susanna Venn, Anna-Maria Virkkala, Tage Vowles, Stef Weijers, Martin Wilmking, Sonja Wipf, Tara ZaminKeywordsSourceGlobal Ecology and Biogeography. 27(12): 1402-1411.Year2018
- Background. The post-harvest recovery and sustained productivity of Nothofagus pumilio forests in Tierra del Fuego may be affected by the abundance and composition of ectomycorrhizal fungi (EMF). Timber harvesting alters EMF community structure in many managed forests, but the impacts of harvesting can vary with the management strategy. The implementation of variable retention (VR) management can maintain, increase, or decrease the diversity of many species, but the effects of VR on EMF in the forests of southern Patagonia have not been studied, nor has the role of EMF in the degeneration...AuthorsRebecca E. Hewitt, Donald Lee Taylor, Teresa Hollingsworth, Christopher B. Anderson, Guillermo Martínez PasturKeywordsSourcePeerJ. 6(3): e5008-.Year2018
- Grid-independent rate of spread results from a physics-based simulation are presented. Previously, such a numerical benchmark has been elusive owing to computational restrictions. The grid-converged results are used to systematically construct correlations between the rate of spread (RoS) and both wind speed and grass height, separately. The RoS obtained from the physics-based model is found to be linear with wind speed in the parameter range considered. When wind speed is varied, the physics-based model predicts faster RoS than the Mk III and V (McArthur) models (Noble et al. 1980) but...AuthorsK. A. M. Moinuddin, D. Sutherland, William MellKeywordsSourceInternational Journal of Wildland Fire. 27(12): 800-814.Year2018
- Amenity-rich rural communities attract tourists, retirees, secondhome owners, and others whose values are often assumed to conflict with those of longtime residents. While prior research has examined attitudinal differences across types of residents, questions about the effects of community growth on residents’ attitudes remain unanswered. This study examines whether and how seasonal and permanent residents differ within and across towns experiencing different rates of growth, and the implications of differences for attitudes toward community development and preservation. Results showed...AuthorsMinkyung Park, Monika Derrien, Emilian Geczi, Patricia A. StokowskiKeywordsSourceSociety & Natural Resources. 32(1): 73-92.Year2018
- The Aquatic Conservation Strategy (ACS) is a regional strategy applied to aquatic and riparian ecosystems across the area covered by the Northwest Forest Plan (NWFP, or Plan), encompassing broad landscapes of public lands administered by the U.S. Department of Agriculture Forest Service and the U.S. Department of the Interior Bureau of Land Management (BLM) (USDA and USDI 1994a). The ACS was developed during the analysis (FEMAT 1993) that led to the NWFP, but its foundation was a refinement of earlier strategies: the Scientific Panel on Late-Successional Forest Ecosystems (“The Gang of...AuthorsGordon Reeves, Deanna H. Olson, Steve Wondzell, Pete Bisson, Sean Gordon, Stephanie A. Miller, Jonathan W. Long, Michael FurnissKeywordsSourceIn: Spies, T.A.; Stine, P.A.; Gravenmier, R.; Long, J.W.; Reilly, M.J., tech. coords. 2018. Synthesis of science to inform land management within the Northwest Forest Plan area. Gen. Tech. Rep. PNW-GTR-966. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station: 461-624.Year2018
- Monitoring and classifying forest disturbance using Landsat time series has improved greatly over the past decade, with many new algorithms taking advantage of the high-quality, cost free data in the archive. Much of the innovation has been focused on use of sophisticated workflows that consist of a logical sequence of processes and rules, multiple statistical functions, and parameter sets that must be calibrated to accurately classify disturbance. For many algorithms, calibration has been local to areas of interest and the algorithm's classification performance has been good under those...AuthorsWarren B. Cohen, Zhiqiang Yang, Sean P. Healey, Robert E. Kennedy, Noel GorelickKeywordsSourceRemote Sensing of Environment. 205: 131-140.Year2018
- The LandTrendr (LT) algorithm has been used widely for analysis of change in Landsat spectral time series data, but requires significant pre-processing, data management, and computational resources, and is only accessible to the community in a proprietary programming language (IDL). Here, we introduce LT for the Google Earth Engine (GEE) platform. The GEE platform simplifies pre-processing steps, allowing focus on the translation of the core temporal segmentation algorithm. Temporal segmentation involved a series of repeated random access calls to each pixel’s time series, resulting in a...AuthorsRobert E. Kennedy, Zhiqiang Yang, Noel Gorelick, Justin Braaten, Lucas Cavalcante, Warren B. Cohen, Sean P. HealeySourceRemote Sensing. 10: 691.Year2018
- The tundra is warming more rapidly than any other biome on Earth, and the potential ramifications are far-reaching because of global feedback effects between vegetation and climate. A better understanding of how environmental factors shape plant structure and function is crucial for predicting the consequences of environmental change for ecosystem functioning. Here we explore the biome-wide relationships between temperature, moisture and seven key plant functional traits both across space and over three decades of warming at 117 tundra locations. Spatial temperature–trait relationships...AuthorsJanet Jorgenson, Julia Klein, Borgthor Magnusson, Craig Tweedie, Philip A. Wookey, Michael Bahn, Benjamin Blonder, Peter M. van Bodegom, Benjamin Bond-Lamberty, Giandiego Campetella, Bruno E. L. Cerabolini, F. Stuart Chapin, William K. Cornwell, Joseph Craine, Matteo Dainese, Franciska T. de Vries, Sandra Díaz, Brian J. Enquist, Walton Green, Anne D. Bjorkman, Isla H. Myers-Smith, Sarah C. Elmendorf, Signe Normand, Nadja Rüger, Pieter S. A. Beck, Anne Blach-Overgaard, Daan Blok, J. Hans C. Cornelissen, Bruce C. Forbes, Damien Georges, Scott J. Goetz, Kevin C. Guay, Gregory H. R. Henry, Janneke HilleRisLambers, Robert D. Hollister, Dirk N. Karger, Jens Kattge, Peter Manning, Janet S. Prevey, Christian Rixen, Gabriela Schaepman-Strub, Haydn J. D. Thomas, Mark Vellend, Martin Wilmking, Sonja Wipf, Michele Carbognani, Luise Hermanutz, Esther Lévesque, Ulf Molau, Alessandro Petraglia, Nadejda A. Soudzilovskaia, Marko J. Spasojevic, Marcello Tomaselli, Tage Vowles, Juha M. Alatalo, Heather D. Alexander, Alba Anadon-Rosell, Sandra Angers-Blondin, Mariska te Beest, Logan Berner, Robert G. Björk, Agata Buchwal, Allan Buras, Katherine Christie, Elisabeth J. Cooper, Stefan Dullinger, Bo Elberling, Anu Eskelinen, Esther R. Frei, Oriol Grau, Paul Grogan, Martin Hallinger, Karen A. Harper, Monique M. P. D. Heijmans, James Hudson, Karl Hülber, Maitane Iturrate-Garcia, Colleen M. Iversen, Francesca Jaroszynska, Jill F. Johnstone, Rasmus Halfdan Jørgensen, Elina Kaarlejärvi, Rebecca Klady, Sara Kuleza, Aino Kulonen, Laurent J. Lamarque, Trevor Lantz, Chelsea J. Little, James D. M. Speed, Anders Michelsen, Ann Milbau, Jacob Nabe-Nielsen, Sigrid Schøler Nielsen, Josep M. Ninot, Steven F. Oberbauer, Johan Olofsson, Vladimir G. Onipchenko, Sabine B. Rumpf, Philipp Semenchuk, Rohan Shetti, Laura Siegwart Collier, Lorna E. Street, Katharine N. Suding, Ken D. Tape, Andrew Trant, Urs A. Treier, Jean-Pierre Tremblay, Maxime Tremblay, Susanna Venn, Stef Weijers, Tara Zamin, Noémie Boulanger-Lapointe, William A. Gould, David S. Hik, Annika Hofgaard, Ingibjörg S. Jónsdóttir, Jenny C. Ordoñez, Ruben Milla, Ülo Niinemets, Yusuke Onoda, Wim A. Ozinga, Josep Penuelas, Hendrik Poorter, Peter Poschlod, Peter B. Reich, Brody Sandel, Brandon Schamp, Serge Sheremetev, Evan WeiherKeywordsSourceNature. 562(7725): 57-62.Year2018