Stream-corridor restoration: Some assembly required
Mark K. Briggs, Eduardo Gonzalez, Waite R. Osterkamp, Patrick B. Shafroth, Francisco Zamora
2021, Book chapter, Renewing our rivers: Stream corridor restoration in dryland regions
No abstract available....
A case for stream corridor restoration
Mark K. Briggs, Osvel Hinojosa-Huerta, Waite R. Osterkamp, Patrick B. Shafroth, Carlos A. Sifuentes Lugo, Lindsay White, Francisco Zamora
2021, Book chapter, Renewing our rivers: Stream corridor restoration in dryland regions
No abstract available....
Toward physics-based nonergodic PSHA: A prototype fully-deterministic seismic hazard model for southern California
Kevin R. Milner, Bruce E. Shaw, Christine A. Goulet, Keith B. Richards-Dinger, Scott Callaghan, Thomas H. Jordan, James H. Dieterich, Edward H. Field
2021, Bulletin of the Seismological Society of America (111) 898-915
We present a nonergodic framework for probabilistic seismic‐hazard analysis (PSHA) that is constructed entirely of deterministic, physical models. The use of deterministic ground‐motion simulations in PSHA calculations is not new (e.g., CyberShake), but prior studies relied on kinematic rupture generators to extend empirical earthquake rupture...
Using heat to trace vertical water fluxes in sediment experiencing concurrent tidal pumping and groundwater discharge
N LeRoux, B. Kurylyk, Martin A. Briggs, D. Irvine, J Tamborski, V. F. Bense
2021, Water Resources Research (57)
Heat has been widely applied to trace groundwater‐surface water exchanges in inland environments, but it is infrequently applied in coastal sediment where head oscillations induce periodicity in water flux magnitude/direction and heat advection. This complicates interpretation of temperatures to estimate water fluxes. We investigate the convolution of...
Juvenile Chinook salmon survival, travel time, and floodplain use relative to riverine channels in the Sacramento–San Joaquin River Delta
Adam Pope, Russell Perry, Brett N. Harvey, Dalton Hance, Hal C Hansel
2021, Transactions of the American Fisheries Society (150) 38-55
Floodplains provide multiple benefits to both resident and migratory fish species, including juvenile Chinook Salmon Oncorhynchus tshawytscha, but direct comparisons of survival during migration through a floodplain versus riverine routes are scarce. The Yolo Bypass is a broad floodplain of the Sacramento River that floods in about...
A subset of CyberShake ground-motion time series for response-history analysis
Jack W. Baker, Sanaz Rezaeian, Christine A. Goulet, Nico Luco, Ganyu Teng
2021, Earthquake Spectra Journal (37) 1162-1176
This manuscript describes a subset of CyberShake numerically simulated ground motions that were selected and vetted for use in engineering response-history analyses. Ground motions were selected that have seismological properties and response spectra representative of conditions in the Los Angeles area, based on disaggregation of seismic hazard....
Accelerometry to study fine-scale activity of invasive Burmese pythons (Python bivittatus) in the wild
Nicholas M. Whitney, Connor F. White, Brian Smith, Michael Cherkiss, Frank J. Mazzotti, Kristen Hart
2021, Animal Biotelemetry (9)
The establishment of Burmese pythons (Python bivittatus) in Everglades National Park, Florida, USA, has been connected to a > 90% decline in the mesomammal population in the park and is a major threat to native reptile and bird populations. Efforts to control this population are underway, but are hampered by a lack of...
Heterogeneous stream-reservoir graph networks with data assimilation
Shengyu Chen, Alison P. Appling, Samantha K. Oliver, Hayley R. Corson-Dosch, Jordan Read, Jeffrey Michael Sadler, Jacob Aaron Zwart, Xiaowei Jia
2021, IEEE International Conference on Data Mining (ICDM) 1024-1029
Accurate prediction of water temperature in streams is critical for monitoring and understanding biogeochemical and ecological processes in streams. Stream temperature is affected by weather patterns (such as solar radiation) and water flowing through the stream network. Additionally, stream temperature can be substantially affected by water...
Toward an integrative geological and geophysical view of Cascadia subduction zone earthquakes
Maureen A. L. Walton, Lydia M. Staisch, Tina Dura, Jessie K. Pearl, Brian Sherrod, Joan S. Gomberg, Simon E. Engelhart, Anne Trehu, Janet Watt, Jonathan P. Perkins, Robert C. Witter, Noel Bartlow, Chris Goldfinger, Harvey Kelsey, Ann Morey, Valerie J. Sahakian, Harold Tobin, Kelin Wang, Ray Wells, Erin A. Wirth
2021, Annual Review of Earth and Planetary Sciences (49) 367-398
The Cascadia subduction zone (CSZ) is an exceptional geologic environment for recording evidence of land level changes, tsunamis, and ground motion that reveals at least 19 great megathrust earthquakes over the past 10 kyr. Such earthquakes are among the most impactful natural hazards on Earth, transcend national boundaries, and can...
Metamorphosis in an era of increasing climate variability
Winsor H. Lowe, Thomas E. Martin, David K. Skelly, H. Arthur Woods
2021, Trends in Ecology & Evolution (36) 360-375
Most animals have complex life cycles including metamorphosis or other discrete life stage transitions during which individuals may be particularly vulnerable to environmental stressors. With climate change, individuals will be exposed to increasing thermal and hydrologic variability during metamorphosis, which may affect survival and performance through physiological, behavioral, and ecological...
Comparison of simple averaging and latent class modeling to estimate the area of land cover in the presence of reference data variability
Dingfan Xing, Stephen V. Stehman, Giles M Foody, Bruce Pengra
2021, Land (10)
Estimates of the area or percent area of the land cover classes within a study region are often based on the reference land cover class labels assigned by analysts interpreting satellite imagery and other ancillary spatial data. Different analysts interpreting the same spatial unit will not always...
Testing which axes of species differentiation underlie covariance of phylogeographic similarity among montane sedge species
Richard G.J. Hodel, Robert Massatti, Sasha G.D. Bishop, L. Lacey Knowles
2021, Molecular Ecology (75) 349-364
Co‐distributed species may exhibit similar phylogeographic patterns due to shared environmental factors or discordant patterns attributed to the influence of species‐specific traits. Although either concordant or discordant patterns could occur due to chance, stark differences in key traits (e.g., dispersal ability) may readily explain differences between species. Multiple species’ attributes...
Behaviorally-mediated trophic cascade attenuated by prey use of risky places at safe times
Meredith S. Palmer, C. Portales-Reyes, C. Potter, L. David Mech, Forest Isbell
2021, Oecologia (195) 235-248
The mere threat of predation may incite behavioral changes in prey that lead to community-wide impacts on productivity, biodiversity, and nutrient cycling. The paucity of experimental manipulations, however, has contributed to controversy over the strength of this pathway in wide-ranging vertebrate systems. We investigated whether simulated gray wolf (Canis lupus)...
Mesozoic magmatism in Montana
Kaleb C. Scarberry, Petr V. Yakovlev, Theresa Maude Schwartz
2021, Book chapter, Geology of Montana
From crystalline batholiths with footprints larger than 4,500 km2 to beds of micron-sized ash particles, a record of Mesozoic magmatism is found throughout Montana. Mesozoic igneous rocks are an important natural resource in the state because of their association with precious metal ores and industrial mineral deposits. Mesozoic magmatism in...
The Denver Well Logging Society January 2021 Newsletter: From the VP - Technology
Jenny H. Lagesse
2021, Newsletter
No abstract available....
Until It's a regulation it's not my fight: Complexities of a voluntary nonlead hunting ammunition program
J. H. Schulz, S. A. Wilhelm Stanis, D.M. Hall, Elisabeth B. Webb
2021, Journal of Environmental Management (277)
Wildlife and human health are at risk of lead exposure from spent hunting ammunition. Lead exposure persists for bald eagles due to bullet fragments in game animal gut piles and unretrieved carcasses, and is also a human health risk when wild...
Yellowstone grizzly bear investigations 2020 - Annual report of the Interagency Grizzly Bear Study Team
Frank T. van Manen, Mark A. Haroldson, Bryn Karabensh, editor(s)
2021, Report
This Annual Report summarizes results of grizzly bear (Ursus arctos) research and monitoring conducted in the Greater Yellowstone Ecosystem (GYE) by the Interagency Grizzly Bear Study Team (IGBST) during 2020. The research and monitoring program is focused on population estimation and demographics, food monitoring, and habitat monitoring. This report also...
Adult survival probability and body size affect parental risk-taking across latitudes
Juan C. Oteyza, James C. Mouton, Thomas E. Martin
2021, Ecology Letters (24) 20-26
Parents faced with a predator must choose between their own safety versus taking care of their offspring. Each choice can have fitness costs. Life-history theory predicts that longer-lived species should be less willing than shorter-lived species to return to care for their offspring after a predator disturbance because they have...
Seismic response of a typical shear-wall dominated high-rise condominium building during the January 7, 2020 Mw6.4 Indios, Puerto Rico earthquake
Mehmet Celebi, Eduardo Miranda, Jose A. Martinez-Cruzado
2021, Journal of Structural Engineering (147)
Seismic response records were retrieved from the monitored 21-story (53.26-m-tall) typical Puerto Rican reinforced-concrete shear-wall dominated El Castillo Building in Mayaguez, 50 km from the mainshock epicenter of the January 7, 2020, Mw6.4 offshore Indios, Puerto Rico earthquake. The shear-wall-to-floor areas of the building are 0.97 and 3.49 in the...
Karachi effects of the Makran earthquake and tsunami of November 1945: Mercury spilled, tide gauge impaired, seawalls overrun, boats displaced, mosque flooded
Brian F. Atwater, Haider Hasan, Ghazala Naeem, Din Mohammad Kakar, Asaf Humayun, Seshachalam Srinivasalu, Julia Elton, Noorul Ayen Hasan, Abdullah Usman, Hira Ashfaq Lodhi, Shoaib Ahmed, Lindsey M. Wright, Loyce M. Adams
2021, IOC Brochure 2020-7
An earthquake and tsunamiI on November 28, 1945, sourced near the Makran coast of the Arabian Sea, disturbed port facilities and fishing villages to the east at Karachi Harbour. Seismic waves, some 300 kilometers from their Makran source, spilled mercury high in a lighthouse at Manora. One liter of the...
Response of aquatic life to coal mining in Appalachia
George T. Merovich Jr., Nathaniel P. Hitt, Eric R. Merriam, Jess Jones
2021, Book chapter, Appalachia's coal-mined landscapes
No abstract available. ...
Regional crop water use assessment using Landsat-derived evapotranspiration
Arun Bawa, Gabriel B. Senay, Sandeep Kumar
2021, Hydrologic Processes (35)
Reliable information on water use and availability at basin and field scales are important to ensure the optimized constructive uses of available water resources. This study was conducted with the specific objective to estimate Landsat-based actual evapotranspiration (ETa) using the Operational Simplified Surface Energy Balance (SSEBop) model across the state...
Shaking is almost always a surprise: The earthquakes that produce significant ground motion
Sarah E. Minson, Annemarie S. Baltay Sundstrom, Elizabeth S. Cochran, Sara K. McBride, Kevin R. Milner
2021, Seismological Research Letters (92) 460-468
Although small earthquakes are expected to produce weak shaking, ground motion is highly variable and there are outlier earthquakes that generate more shaking than expected—sometimes significantly more. We explore datasets of M 0.5–8.3 earthquakes to determine the relative impact of frequent, smaller-magnitude earthquakes that rarely produce strong ground motion, to...
Investigation of land surface phenology detections in shrublands using multiple scale satellite data
Dailiang Peng, Yan Wang, George Z. Xian, Alfredo R Huete, Wenjiang Huang, Miaogen Shen, Fumin Wang, Le Yu, Liangyun Liu, Qiaoyun Xie, Lingling Liu, Xiaoyang Zhang
2021, Remote Sensing of Environment (252)
Shrublands occupy about 13% of the global land surface, contain about one-third of the biodiversity, store about half of the global terrestrial carbon, and provide many ecosystem services to a large amount of world's human population and livestock. Because phenology is...
The case for a long-lived and robust Yellowstone hotspot
Victor E. Camp, Ray Wells
2021, GSA Today (31) 4-10
The Yellowstone hotspot is recognized as a whole-mantle plume with a history that extends to at least 56 Ma, as recorded by offshore volcanism on the Siletzia oceanic plateau. Siletzia accreted onto the North American plate at 51–49 Ma, followed by repositioning of the Farallon trench west of Siletzia from...
