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Displaying 2,231 - 2,240 of 65,202 Publications- Droughts are often long-lasting phenomena, without a distinct start or end and with impacts cascading across sectors and systems, creating long-term legacies. Nevertheless, our current perceptions and management of droughts and their impacts are often event-based, which can limit the effective assessment of drought risks and reduction of drought impacts. Here, we advocate for changing this perspective and viewing drought as a hydrological-ecological-social continuum. We take a systems theory perspective and focus on how “memory” causes feedback and interactions between parts of the...AuthorsAnne F. Van Loon, Sarra Kchouk, Alessia Matano, Faranak Tootoonchi, Camila Alvarez-Garreton, Khalid E. A. Hassaballah, Minchao Wu, Marthe L. K. Wens, Anastasiya Shyrokaya, Elena Ridolfi, Riccardo Biella, Viorica Nagavciuc, Marlies H. Barendrecht, Ana Bastos, Louise Cavalcante, Franciska T. de Vries, Margaret Garcia, Johanna Mard, Ileen N. Streefkerk, Claudia Teutschbein, Roshanak Tootoonchi, Ruben Weesie, Valentin Aich, Juan P. Boisier, Giuliano Di Baldassarre, Yiheng Du, Mauricio Galleguillos, Rene Garreaud, Monica Ionita, Sina Khatami, Johanna K. L. Koehler, Charlie H. Luce, Shreedhar Maskey, Heidi D. Mendoza, Moses N. Mwangi, Ilias G. Pechlivanidis, Germano G. Ribeiro Neto, Tirthankar Roy, Robert Stefanski, Patricia Trambauer, Elizabeth A. Koebele, Giulia Vico, Micha WernerSourceNatural Hazards and Earth System Sciences. 24: 3173-3205.Year2024
- Changes in the volume, rate, and timing of the snowmelt water pulse have profound implications for seasonal soil moisture, evapotranspiration (ET), groundwater recharge, and downstream water availability, especially in the context of climate change. Here, we present an empirical analysis of water available for runoff using five eddy covariance towers located in continental montane forests across a regional gradient of snow depth, precipitation seasonality, and aridity. We specifically investigated how energy-water asynchrony (i.e., snowmelt timing relative to atmospheric demand), surface...AuthorsRyan William Webb, John F. Knowles, Alex Fox, Alex Fabricus, Timothy Corrie, Kori Mooney, Jocelyn Gallais, Nana Afua Gyau Frimpong, Christopher Akuka Akurugu, Greg Barron-Gafford, Peter D. Blanken, Sean P. Burns, John M. Frank, Marcy LitvakKeywordsSourceHydrological Processes. 38: e15297.Year2024
- iFLOW is a free, open source, and python based framework and graphical user interface to visualize and analyze temperature time series, and extract one dimensional thermal velocity, vT, and bulk effective thermal diffusivity, ke. Information of thermal properties of the sediment water mixture (bulk) and water allows quantifying the one dimensional Darcian flux, q, and seepage velocity, v, from vT. Available software packages were developed to quantify q and ke only based on a specific mathematical model or focused on specific data processing or parameter estimation techniques, and all...AuthorsA. Bertagnoli, Charlie H. Luce, R. van Kampen, U. Schneidewind, M. van Berkel, A. W. Tranmer, G. Vandersteen, S. Krause, D. ToninaSourceWater Resources Research. 60: e2024WR037370.Year2024
- There is a pressing need for global monitoring of snow water equivalent (SWE) at high spatiotemporal resolution, and L-band (1-2 GHz) interferometric synthetic aperture radar (InSAR) holds promise. However, the technique has not seen extensive evaluation in forests. We evaluated this technique across varying forest canopy conditions using eight InSAR pairs collected at the Fraser Experimental Forest, Colorado, USA by NASA UAVSAR during the 10 week NASA SnowEx 2021 Campaign. Compared with in situ measurements, we found root mean squared errors (RMSEs) of 14-17 mm for SWE changes in forest...AuthorsR. Bonnell, Kelly J. Elder, D. McGrath, H. P. Marshall, B. Starr, N. Adebisi, R. T. Palomaki, Z. HoppinenSourceGeophysical Research Letters. 51: e2024GL111708.Year2024
- This special issue of Rangeland Ecology and Management is dedicated to applying the Sagebrush Conservation Design (SCD) to improve conservation outcomes across the sagebrush biome in the face of pervasive ecosystem threats. This special issue provides new science and real-world examples of how we can implement the SCD to save a biome. The SCD is a tool to identify intact sagebrush areas and address the largest threats to the ecosystem. The SCD focuses on first protecting intact and functioning sage- brush ecosystems, called Core Sagebrush Areas, then works outward toward more degraded...AuthorsK. E. Doherty, J. Maestas, T. Remington, D. E. Naugle, C. Boyd, L. Wiechman, G. Bedrosian, M. Cahill, P. Coates, M. Crist, M. C. Holdrege, A. V Kumar, T. Mozelewski, R. C. O’Connor, E. M. Olimpi, A. Olsen, B. G. Prochazka, Jason R. Reinhardt, J. T. Smith, W. D. Sparklin, D. M. Theobald, K. WollsteinKeywordsSourceRangeland Ecology and Management. 97: 1-11.Year2024
- Rangelands are a type of land cover dominated by grasses, grass-like plants, broadleaf herbaceous plants (forbs), shrubs, and isolated trees, usually in which large herbivores evolved as part of the ecosystem. In many rangelands, the large herbivores were replaced by livestock, and thus livestock grazing represents a major land use for production of food and fiber. Sustainability is maintained by species diversity (Kouba et al., 2024; Retallack et al., 2023; Hooper et al., 2005; Tilman et al., 2006, 2012; Zaveleta et al., 2010; Reich et al., 2012) and reduction of biodiversity is expected...AuthorsE. Raymond Hunt, Cuizhen Wang, D. Terrance Booth, Samuel E. Cox, Lalit Kumar, Matt C. ReevesKeywordsSourceIn: Thenkabail, Prasad S., ed. Remote Sensing Handbook, Volume III. Agriculture, Food Security, Rangelands, Vegetation, Phenology, and Soils (2nd ed.). CRC Press. p. 419-461.Year2024
- While there are many definitions of rangeland, the central theme of all these is that it is land on which the dominating vegetation is mainly grasses, grass-like plants, forbs, shrubs and isolated trees (De Cauwer et al., 2024; Arogoundade et al., 2023; Feizizadeh et al., 2023; Sharifi and Felegari, 2023; McCord and Pilliod, 2022; Matongera et al., 2021; Zhou et al., 2020; Hadian et al., 2019; Al-bukhari et al., 2018; Eddy et al., 2017; Gökalp et al., 2017). Rangelands include shrublands, natural grasslands, woodlands, savannahs, tundra and many desert regions. A distinguishing factor of...AuthorsLalit Kumar, Priyakant Sinha, Jesslyn F. Brown, R. Douglas Ramsey, Matthew Rigge, Carson A. Stam, Alexander J. Hernandez, E. Raymond Hunt, Matt C. ReevesKeywordsSourceIn: Thenkabail, Prasad S., ed. Remote Sensing Handbook, Volume III. Agriculture, Food Security, Rangelands, Vegetation, Phenology, and Soils (2nd ed.). CRC Press. p. 465-518.Year2024
- Mast seeding, the synchronous and highly variable production of seed crops by perennial plants, is a population-level phenomenon and has cascading effects in ecosystems. Mast seeding studies are typically conducted at the population/species level. Much less is known about synchrony in mast seeding between species because the necessary long-term data are rarely available. To investigate synchrony between species within communities, we used long-term data from seven forest communities in the U.S. Long-Term Ecological Research (LTER) network, ranging from tropical rainforest to boreal forest....AuthorsJalene M. LaMontagne, David F. Greene, E. Penelope Holland, Jill F. Johnstone, Mark Schulze, Jess K. Zimmerman, Nicholas J. Lyon, Angel Chen, Tom E. X. Miller, Katherine Nigro, Rebecca S. Snell, Jessica H. Barton, V. Bala Chaudhary, Natalie L. Cleavitt, Elizabeth E. Crone, Walter D. Koenig, Diana Macias, Ian S. Pearse, Miranda D. RedmondKeywordsSourceEcology Letters. 27: e14498.Year2024
- The transformation of roundwood into sawn timber is crucial in Mexico, where the industry faces challenges in both the quality and quantity of products, requiring technological improvements to minimize waste and enhance competitiveness. In this context, the objective of this study was to compare the production of traditional and modern sawmills based on the sawing coefficient, total product yield, and the economic revenues generated. The study was conducted in Guachochi, Chihuahua, a region with cold temperate forests. Two types of sawmills were evaluated: traditional (private company) and...AuthorsJoel Rascon-Solano, Oscar Alberto Aguirre-Calderon, Eduardo Alanís-Rodriguez, Javier Jimenez-Perez, Eduardo Trevino-Garza, Juan Abel Najera-Luna, Jose IniguezKeywordsSourceMadera y Bosques. 30(2): e3022580.Year2024
- A timber lateral force resisting system (LFRS) with timber buckling-restrained braces (TBRB) is proposed to improve the seismic performance of timber buildings. Using a similar design approach for conventional buckling-restrained braced frames (BRBF) and established design methods for timber connections, a timber buckling-restrained braced frame (TBRBF) was designed and tested under a series of quasi-static cyclic loading protocols. During the tests, the level of axial load applied to the column was varied to simulate gravity loads. Additionally, some of the tests included an out-of-plane...AuthorsE. Williamson, C. Pantelides, H.-E Blomgren, Douglas R. RammerKeywordsSourceProceedings of the 18th World Conference on Earthquake EngineeringYear2024