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Computing flow-field distortion coefficients from well-construction and formation properties Computing flow-field distortion coefficients from well-construction and formation properties
Direct measurements of groundwater velocity made with borehole flowmeters in screened wells must be compensated for the effects of flow-field distortion (also known as borehole acceleration). A theoretical equation developed by Drost et al. (1968) and simple inputs describing hydraulic properties of well construction and geologic formation were programmed into an Excel workbook to...
Authors
E. Randall Bayless, Chad J. Ostheimer, Robert Darner
Quantifying avian resilience to habitat change to support conservation decision-making Quantifying avian resilience to habitat change to support conservation decision-making
Habitat loss and degradation are two of the main drivers of contemporary avian population declines. Wildlife managers are increasingly advocating for tools that provide decision support to set priorities for restoration or conservation efficiently. We demonstrate how to derive two species-specific management and resilience metrics: the greatest management impact point (GMIP) and the...
Authors
Amanda L. Hayes-Puttfarcken, Erica Francis Stuber
Site-specific amplifications in Northwestern Turkiye: A generic approach Site-specific amplifications in Northwestern Turkiye: A generic approach
In this study, we derive generic site amplification functions applicable to Northwestern Türkiye and follow guidance on site classifications established by the United States National Earthquake Hazards Reduction Program (NEHRP). We employ the one-dimensional (1-D) equivalent linear ground response analysis method and focus on recordings from a select suite of free-field strong motion (SM...
Authors
Gamze Muratoglu, Aysegul Askan, Alan Yong
Interplanetary electric fields for extreme magnetic storms Interplanetary electric fields for extreme magnetic storms
Using a list of sudden-commencement storms, the ring-current index, and 1-h near-Earth solar-wind measurements from solar cycles 20–25, we develop extreme-value statistical models relating storm intensity 𝐷 =max{−𝐷𝑠𝑡} to the storm main-phase maximum duskward interplanetary electric field 𝐸. The conditional relationship 𝐷|𝐸 is demonstrably sublinear—linear models are confidently...
Authors
Jeffrey J. Love, E. Joshua Rigler, Ian G. Richardson, Kalevi Mursula
Stream temperature variability in headwater beaver dam complexes in relation to hydrologic and environmental factors Stream temperature variability in headwater beaver dam complexes in relation to hydrologic and environmental factors
Beaver modify hydrological regimes and have the ability to both increase water storage and alter stream temperatures. For these reasons, beaver translocation and the construction of human engineered beaver-dam analogs (BDAs) have become popular tools for climate-change adaptation. However, there is a lack of understanding about how beaver engineering affects stream temperature. The...
Authors
Catherine D.O. Means, Christian E. Torgersen, Joshua J. Lawler, Andrew S. Gendaszek, Benjamin J. Dittbrenner
Conservation enhances resilience of the United States Duck Factory as environmental shifts may diminish landscape-scale waterfowl breeding capacity Conservation enhances resilience of the United States Duck Factory as environmental shifts may diminish landscape-scale waterfowl breeding capacity
Wetlands in the U.S. Prairie Pothole Region (USPPR) provide habitat for an estimated 5 million breeding ducks and remain a focal point for North American waterfowl conservation. After decades of investment, almost 20% of the USPPR is protected by some form of wetland or grassland conservation. We synthesized four decades of modeling studies aimed at understanding how environmental change...
Authors
Owen P. McKenna, Aaron T. Pearse, Imtiaz Rangwala, Jason D. Tack, Ned Wright, Audrey Claire Lothspeich
Pliocene (Piacenzian) planktic foraminiferal biogeography: Insights into how planktic biogeography is linked to climate and socioeconomic impacts on marine ecosystems Pliocene (Piacenzian) planktic foraminiferal biogeography: Insights into how planktic biogeography is linked to climate and socioeconomic impacts on marine ecosystems
The Piacenzian Age (3.60–2.58 Ma) of the Pliocene Epoch was characterized by globally warmer climates, higher sea levels, and atmospheric CO2 similar to present. Utilizing a robust dataset of 2,101 samples and over 637,000 foraminifer specimens from 77 deep-sea core sites worldwide, we document planktic foraminifer biogeography and biodiversity during the mid-Piacenzian Warm Period (mPWP...
Authors
Harry J. Dowsett, Whittney Spivey, Kevin M. Foley, Marci M. Robinson
The application of state-and-transition models to remotely sensed fractional cover datasets The application of state-and-transition models to remotely sensed fractional cover datasets
Assessing vegetation conditions in expansive rangeland ecosystems has long posed a persistent challenge. Recent advancements in remote sensing technologies have provided new avenues for improving this assessment process. In this study, conducted at two ranch sites in Nevada, we integrated existing line-point-intercept monitoring data with additional field observations to evaluate the...
Authors
Lucas Phipps, Tamzen K. Stringham, Wade Lieurance, Matthew B. Rigge
The geologic history of the Chehalis Forearc Basin, Washington State, USA The geologic history of the Chehalis Forearc Basin, Washington State, USA
The Chehalis basin is located between the Cascade arc and the Coast Range in southwest Washington State. It consists of sedimentary and volcanic rocks deposited throughout the Cenozoic and is underlain by the Siletzia terrane, a thick, large igneous province accreted in the Eocene. Here, we constrain evolution of the Chehalis basin depocenter using isochore maps derived from isostatic...
Authors
Rud L. Moe, John Bershaw, Lydia M. Staisch, Ashley R. Streig
Long-term aridity shapes grassland drought resistance and modulates the roles of plant diversity and functional composition Long-term aridity shapes grassland drought resistance and modulates the roles of plant diversity and functional composition
Understanding the drivers of plant community stability is crucial for predicting ecosystem responses to extreme drought events. In grasslands, drought resistance supports the maintenance of key functions such as above-ground primary productivity, making the identification of resistance drivers essential to guide management under climate change. Proposed factors contributing to grassland...
Authors
D. Bertuol-Garcia, L. van den Brink, M. Carbognani, M. H. Chandregowda, A. C. Churchill, D. F. Cusack, M. Dubbert, J. S. Dukes, M. E. DuPre, N. Eisenhauer, T. G.W. Forte, Y. Hautier, A. Hector, H. A.L. Henry, A. Jentsch, S. Koerner, A. Kübert, E. Ladouceur, D. Laughlin, M. G. Longo, A. Loydi, A. S. Mori, Seth M. Munson, U. N. Nielsen, T. J. Ohlert, G. R. Oñatibia, R. Otfinowski, M. Pärtel, G. B. Paterno, J. Peñuelas, P. L. Peri, A. Petraglia, J. M. Piñeiro, S. A. Power, Y. Pueyo, W. E. Rogers, B. A. Santos, M. D. Smith, A. Stampfli, R. J. Standish, M. Tedder, G. R. Wheeler, J. Williams, M. Zieter, N. Shackelford
Across-track tilt concept for sun glint mitigation in future Earth-observing missions Across-track tilt concept for sun glint mitigation in future Earth-observing missions
Sun glint is a major limitation for spaceborne optical remote sensing of aquatic environments, particularly in tropical and subtropical regions. By dominating the at-sensor radiance, sun glint complicates atmospheric correction and reduces the quality of aquatic reflectance products derived across Earth observation missions. This study presents a machine learning framework to quantify...
Authors
Saeed Arab, Christopher J. Crawford, Benjamin Page, Kevin Turpie, Peter Gege, David Thompson, Kelly Luis
Restoration is a partial but not complete solution for long-term declines in oyster populations—A case history from the northeastern Gulf of America Restoration is a partial but not complete solution for long-term declines in oyster populations—A case history from the northeastern Gulf of America
Objective We sought to evaluate whether oyster reef restoration is associated with sustained increases in intertidal eastern oyster Crassostrea virginica density in Suwannee Sound, Florida, and to examine how commercial fishing activity and freshwater discharge may modify those patterns.Methods We monitored intertidal oyster reefs for 14 years, including 9 years prior to large-scale...
Authors
W. E. Pine, J. F. Moore, Michael J. Dodrill, J. Aufmuth, M. Moreno, T. S. Coleman, J. Casteel, S. Beck, B. Ennis, N. Rogers, P. C Frederick