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Simulation of groundwater flow in the Silurian aquifer, eastern Iowa, 2020–45 Simulation of groundwater flow in the Silurian aquifer, eastern Iowa, 2020–45
The Silurian aquifer is an important water source for municipalities, industry, and rural households and communities in eastern Iowa, including Johnson County. Increasing demand for groundwater from the aquifer indicated that analytical tools may be beneficial to quantify groundwater resources and inform water-management decisions for the aquifer. The U.S. Geological Survey, in...
Authors
Emilia L. Bristow, John M. Gannon, Andrew M. Williams
Comment on “Assessing the potential for Smallmouth Bass population establishment in Grand Canyon” Comment on “Assessing the potential for Smallmouth Bass population establishment in Grand Canyon”
No abstract available.
Authors
Charles B. Yackulic, Drew Elliot Eppehimer, Lindsey A. Bruckerhoff, Anna Amidon, Kevin R. Bestgen, Nathaniel D. Bransky, Kimberly L. Dibble, Maria C. Dzul, Lindsay Erika Hansen, Brian D. Healy, M. Tildon Jones, Chris Michaud
Seasonal trophic dynamics drive growth potential and predation risk for reintroduced Chinook salmon in Shasta Reservoir Seasonal trophic dynamics drive growth potential and predation risk for reintroduced Chinook salmon in Shasta Reservoir
Reservoir ecosystems can significantly affect anadromous salmon populations reintroduced upstream of impassable high-head dams. In this study, we examine how a novel reservoir food web created by an impoundment can limit juvenile growth or survival through the seasonal production or access to food, promote competition for available resources, and affect risk of the food supply or...
Authors
Rachelle Carina Johnson, Claire E. Couch, Rebecca E. Barsky, Candice R. Powers, Chloe E. Pak, Karl D. Stenberg, Jessica O. Diallo, Kimberly A. Larsen, Marshal S. Hoy, David A. Beauchamp, Tobias J. Kock
The surface elevation table and marker horizon technique: A protocol for monitoring wetland elevation dynamics, standard pperating procedures (version 2) The surface elevation table and marker horizon technique: A protocol for monitoring wetland elevation dynamics, standard pperating procedures (version 2)
No abstract available.
Authors
James C. Lynch, Philippe Hensel, Donald R. Cahoon
At the leading edge: Advancing and bridging the science and management of range-shifting species At the leading edge: Advancing and bridging the science and management of range-shifting species
Climate-mediated shifts in species distributions are reshaping ecosystems worldwide, creating major challenges for conservation and resource management. These range shifts have far-reaching ecological and socio-economic consequences, requiring managers to address complex ecological dynamics while navigating diverse regulatory and value systems. Despite growing attention, key gaps remain...
Authors
Lise Comte, Sarah R. Weiskopf, Laura M. Thompson, Jackson Brear Valler, Madeleine A. Rubenstein, Casey C. O'Hara, Aparna Bamzai-Dodson, Abigail J. Lynch, T.J. Clark-Wolf, Ophelie Ocouriot, Solomon Z. Dobrowski, Laura L. Figueroa, Gabriel M. Filippelli, Heather E. Johnson, Meade Krosby, Joshua J. Lawlor, David A. Moeller, Sean A. Parks, Elliott W. Parsons, Jeremy D. Ross, Brett R. Scheffers, Helen R. Sofaer, Erica Francis Stuber, Shawn Carter
Effect of rotenone treatment on alpine stream invertebratecommunities in Colorado Effect of rotenone treatment on alpine stream invertebratecommunities in Colorado
Objective: Introduction of non-native salmonids to western United States streams has resulted in extirpation and even extinction of native cutthroat trout. Once thought to be extinct, a genetically verified population of Greenback Cutthroat Trout (GBCT) Oncorhynchus virginalis stomias was identified and used for population re-establishment efforts. To restore native trout habitat, stream...
Authors
Charles F. Wahl, Robert E. Zuellig, James J. Roberts, Travis S. Schmidt, Andrea Nichole Schuhmann, Janet L. Miller, Matthew P. Fairchild
Effects of a low-lipid diet on the gut microbiome and head kidney transcriptome of juvenile Chinook Salmon Effects of a low-lipid diet on the gut microbiome and head kidney transcriptome of juvenile Chinook Salmon
Objective Pacific salmon Oncorhynchus spp. reared in production hatcheries are typically fed high-lipid, energy-dense diets to achieve large size and high body condition prior to release. In contrast, juveniles in natural environments tend to consume low-lipid, high-protein diets, and fish reared for research or conservation purposes are sometimes fed diets that are formulated to mimic...
Authors
Claire E. Couch, Konstantin Divilov, Crystal L. Herron, Bing Wang, Olivia M. Hakanson, Michelle M. Scanlan, Luke D. Whitman, Melanie J. Davis, Carl B. Schreck, James T. Peterson
Apatite (U-Th)/He thermochronology from Marsh Creek anticline reconciles Cenozoic and Holocene strain patterns and elucidates the Cenozoic canning displacement zone of Arctic Alaska Apatite (U-Th)/He thermochronology from Marsh Creek anticline reconciles Cenozoic and Holocene strain patterns and elucidates the Cenozoic canning displacement zone of Arctic Alaska
The northeastern Brooks Range is a vast fold-thrust belt that records the northernmost expression of Cenozoic deformation in Alaska, likely with complex dynamic linkages to distant tectonic elements. The principal focus of this manuscript is the Marsh Creek anticline (MCA), which is a large and recently active structure within the broader northeastern Brooks Range. The MCA is a complex...
Authors
William H. Craddock, Julie C Fosdick, Christopher D. Connors, Richard O. Lease, David W. Houseknecht, Megan Mueller, Andrew R C Kylander-Clark
Characterisation of bituminite and testing reproducibility of vitrinite and bituminite reflectance measurements in organic‑carbon-rich intervals of the Kimmeridge Clay Formation: ICCP Identification of Dispersed Organic Matter Working Group round robin ex Characterisation of bituminite and testing reproducibility of vitrinite and bituminite reflectance measurements in organic‑carbon-rich intervals of the Kimmeridge Clay Formation: ICCP Identification of Dispersed Organic Matter Working Group round robin ex
Three round robin exercises (RRE) aimed at characterizing bituminite and testing the reproducibility of random vitrinite (VRo %) and bituminite (BitRo %) reflectance measurements on samples of dispersed organic matter from organic‑carbon rich shale intervals of Kimmeridge Clay Formation were conducted in 2016, 2018, and 2020. This work was conducted by the Identification of Dispersed...
Authors
Jolanta Kus, A.G. Borrego, Barbara Bielowicz, Peter J. Crosdale, M.-E. Damoulianou, Deolinda Flores, Carolina Fonseca, Paula Gonçalves, Paul C. Hackley, Maria Hámor-Vidó, Stefanie Henne, Bjoern Holstein, Iwona Jelonek, Stavros Kalaitzidis, M. Luzhbina, J.G. Mendonça Filho, T.R. Menezes, Magdalena Misz-Kennan, R. Orban, Walter Pickel, N.V. Pronina, P. N. Ranasinghe, Julito Reyes, George Siavalas, A.K. Singh, P.K. Singh, Isabel Suárez-Ruiz, I. Sýkorová, Qingyong Luo, Dragana Životić, P. Wignall, ICCP
Basal area loss from fire using field-calibrated remote sensing refines western US fire severity measurements Basal area loss from fire using field-calibrated remote sensing refines western US fire severity measurements
The spatial patterns of fire effects and tree mortality have profound consequences for forest resilience. Cost-effective, medium-resolution, and spatiotemporally extensive fire severity measurements are essential for informing post-fire restoration and improving our understanding of wildfires—from forest stands to continents and from days to decades. Remote sensing advancements have...
Authors
Sara Winsemius, Yufang Jin, Hugh D. Safford, Michelle C. Agne, Robert A. Andrus, C. Alina Cansler, Anthony C. Caprio, W. Wallace Covington, Joseph E. Crouse, Calvin A. Farris, Peter Z. Fulé, Brian J. Harvey, Sharon M. Hood, David W. Huffman, Emma J. McClure, Alicia L. Reiner, John P. Roccaforte, Saba J. Saberi, Michael T. Stoddard, Laura Trader, Phillip J. van Mantgem, Micah C. Wright, Michael J. Koontz
Examples of eruption response teams from the Alaska Volcano Observatory Examples of eruption response teams from the Alaska Volcano Observatory
During times of eruption response, volcano observatories need to organize themselves differently than during normal operations. The number of formal operational roles grows to ensure that critical responsibilities are covered, including management of all activities at the observatory as well as increased staffing to ensure proper surveillance of data and issuance of timely notices and...
Authors
Michelle L. Coombs, Kristi L. Wallace, Ronni Grapenthin, Jordan Edward Lubbers, Tom Murray
Plant diversity shifts with drying and wetting cycles following removal of poplar plantations in Dongting Lake, China Plant diversity shifts with drying and wetting cycles following removal of poplar plantations in Dongting Lake, China
Dongting Lake, the second largest lake in China, plays a crucial role in maintaining regional ecological security by providing key habitats for waterbirds. This study examined how hydrology and topography (ditches and mounds) together generate fine-scale wet–dry gradients that shape species establishment and successional trajectories. Over the past decade, vegetation restoration has been
Authors
Xueer Ma, Chenchen Liu, Lingli Peng, Chengzhu Liu, Beth A. Middleton, Ting Lei