Incorporating antenna detections into abundance estimates of fish
Maria C. Dzul, Charles B. Yackulic, William L. Kendall, Dana L. Winkelman, Mary M Conner, Michael D. Yard
2022, Canadian Journal of Fisheries and Aquatic Sciences (79) 436-447
Autonomous passive integrated transponder (PIT) tag antennas are commonly used to detect fish marked with PIT tags but cannot detect unmarked fish, creating challenges for abundance estimation. Here we describe an approach to estimate abundance from paired physical capture and antenna detection data in closed and open mark-recapture...
NGA-subduction global ground motion models with regional adjustment factors
Grace Alexandra Parker, Jonathan P. Stewart, David Boore, Gail M. Atkinson, Behzad Hassani
2022, Earthquake Spectra (38) 456-493
We develop semi-empirical ground motion models (GMMs) for peak ground acceleration, peak ground velocity, and 5%-damped pseudo-spectral accelerations for periods from 0.01 to 10 s, for the median orientation-independent horizontal component of subduction earthquake ground motion. The GMMs are applicable to interface and intraslab subduction earthquakes in Japan, Taiwan, Mexico, Central...
Integrating ecosystem metabolism and consumer allochthony reveals nonlinear drivers in lake organic matter processing
Meredith A. Holgerson, Rachel A. Hovel, Patrick T. Kelly, Lauren E Bortolotti, Jennifer A. Brentrup, Amber R Bellamy, Samantha K. Oliver, Alexander J Reisenger
2022, Limnology and Oceanography (67) S71-S85
Lakes process both terrestrial and aquatic organic matter, and the relative contribution from each source is often measured via ecosystem metabolism and terrestrial resource use in the food web (i.e., consumer allochthony). Yet, ecosystem metabolism and consumer allochthony are rarely considered together, despite possible interactions and...
Trachyandesite of Kennedy Table, its vent complex, and post−9.3 Ma uplift of the central Sierra Nevada
Edward Hildreth, Judith Fierstein, Fred M. Phillips, Andrew T. Calvert
2022, GSA Bulletin (134) 1143-1159
Tectonic interpretation of the central Sierra Nevada—whether the crest of the Sierra Nevada (California, USA) was uplifted in the late Cenozoic or whether the range has undergone continuous down-wearing since the Late Cretaceous—is controversial, since there is no obvious tectonic explanation for renewed uplift. The strongest direct evidence for late...
Piscine predation on juvenile salmon in sub-arctic Alaskan rivers: Associations with season, habitat, predator size and streamflow
Erik R. Schoen, Kristen W. Sellmer, Mark S. Wipfli, Juan A. López, Benjamin E. Meyer, Renae Ivanoff
2022, Ecology of Freshwater Fish (31) 243-259
Predation on anadromous salmon can have important consequences for both predators and prey. Salmon provide large seasonal pulses of energy and nutrients via carcasses, eggs and juveniles to many freshwater consumers, and conversely, predation can represent a significant source of mortality for juvenile salmon. Recent declines of Chinook salmon (Oncorhynchus...
Modeling morphodynamics of coastal response to extreme events: What shape are we in?
Christopher R. Sherwood, Ap van Dongeren, James Doyle, Christie Hegermiller, T. J. Hsu, Tarandeep S. Kalra, Maitane Olabarrieta, Allison Penko, Yashar Rafati, Dano Roelvink, Marlies van der Lugt, Jay Veeramony, John C. Warner
2022, Annual Review of Marine Science (14) 457-492
This review focuses on recent advances in process-based numerical models of the impact of extreme storms on sandy coasts. Driven by larger-scale models of meteorology and hydrodynamics, these models simulate morphodynamics across the Sallenger storm-impact scale, including swash, collision, overwash, and inundation. Models are becoming both wider (as more processes...
Taxonomic, temporal, and spatial variations in zooplankton fatty acid composition in Puget Sound, WA, USA
Minna Hiltunen, Ursula Strandberg, Michael T. Brett, Amanda K. Winans, David Beauchamp, Miika Kotila, Julie E. Keister
2022, Estuaries and Coasts (45) 567-581
Fatty acid (FA) content and composition of zooplankton in Puget Sound, Washington (USA) was studied to investigate the nutritional quality of diverse zooplankton prey for juvenile salmon (Oncorhynchus spp.) in terms of their essential fatty acid (EFA) content. The study focus was on eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and arachidonic...
Quantifying the response of nitrogen speciation to hydrology in the Chesapeake Bay Watershed using a multilevel modeling approach
Isabella Bertani, Gopal Bhatt, Gary W. Shenk, Lewis C. Linker
2022, Journal of American Water Resources Association (58) 792-804
Excessive nitrogen (N) inputs to coastal waters can lead to severe eutrophication and different chemical forms of N exhibit varying levels of effectiveness in fueling primary production. Efforts to mitigate N fluxes from coastal watersheds are often guided by models that predict changes in N loads...
Trading off hatching success and cost in the captive breeding of Whooping Cranes
Hannah A. Edwards, Sarah J. Converse, Kelly D. Swan, Axel Moehrenschlager
2022, Animal Conservation (25) 101-109
Captive breeding is an increasingly used conservation strategy for species with a high risk of extinction in the wild, but managing a captive breeding programme can be challenging if there is a deficiency in knowledge about the species’ breeding biology. A knowledge gap can make it difficult to evaluate different...
Species-specific demographic and behavioral responses to food availability during migratory stopover
A. M. Tucker, Conor P. McGowan, James E. Lyons, A. Derose-Wilson, N.A. Clark
2022, Population Ecology (64) 19-34
Understanding the effects of migratory stopover site conditions on both demographic rates and migratory behaviors is critical for interpreting changes in passage population sizes at stopover sites and predicting responses to future changes and conservation actions. We used a Bayesian formulation of the open robust design model to analyze mark-resight...
A Bayesian nonparametric approach to unmixing detrital geochronologic data
John R. Tipton, Glenn R. Sharman, Samuel Johnstone
2022, Mathematical Geosciences (54) 151-176
Sedimentary deposits constitute the primary record of changing environmental conditions that have acted on Earth’s surface over geologic time. Clastic material is eroded from source locations (parents) in sediment routing systems and deposited at sink locations (children). Both parents and children have characteristics that vary across many different dimensions, including...
The distribution and structure of mangroves (Avicennia germinans and Rhizophora mangle) near a rapidly changing range limit in the northeastern Gulf of Mexico
Caitlin M. Snyder, Laura Feher, Michael Osland, Christopher J. Miller, A. Randall Hughes, Karen L Cummins
2022, Estuaries and Coasts (45) 181-195
In coastal wetlands, one of the most striking examples of climate change is the poleward range expansion of mangrove forests in response to warming winters. In North America, the Cedar Key region has often been considered the range limit for mangroves along the western coast of Florida (USA). However, within...
Genomic signatures of thermal adaptation are associated with clinal shifts of life history in a broadly distributed frog
Hugo Cayuela, Yann Dorant, Brenna R. Forester, Dan L Jeffries, Rebecca M. McCaffery, Lisa A Eby, Blake R. Hossack, Jérôme M W Gippet, David S. Pilliod, W Chris Funk
2022, Journal of Animal Ecology (91) 1222-1238
Temperature is a critical driver of ectotherm life-history strategies, whereby a warmer environment is associated with increased growth, reduced longevity and accelerated senescence. Increasing evidence indicates that thermal adaptation may underlie such life-history shifts in wild populations. Single nucleotide polymorphisms (SNPs) and copy number variants (CNVs) can help uncover...
Estimating the influence of oyster reef chains on freshwater detention at the estuary scale using Landsat-8 imagery
Alice Alonso, Natalie G. Nelson, Simeon Yurek, David Kaplan, Maitane Olabarrieta, Peter C Frederick
2022, Estuaries and Coasts (45) 1-16
Oyster reef chains grow in response to local hydrodynamics and can redirect flows, particularly when reef chains grow perpendicular to freshwater flow paths. Singularly, oyster reef chains can act as porous dams that may facilitate nearshore accumulation of fresh or low-salinity water, in turn creating intermediate...
The tundra phenology database: More than two decades of tundra phenology responses to climate change
Janet S. Prevey, Sarah Claire Elmendorf, Anne Bjorkman, J. M. Alatalo, Isabel Ashton, Jakob J. Assmann, Robert G Bjork, Mats P. Bjorkman, Nicoletta Cannone, Michele Carbognani, Chelsea Chisholm, Karin Clark, Courtney G. Collins, Elisabeth J. Cooper, Bo Elberling, Esther R. Frei, Greg Henry, Robert D. Hollister, Toke Thomas Hoye, Ingibjorg Svala Jonsdottir, Jeffrey T. Kerby, Kari Klanderud, Christopher Kopp, Esther Levesque, Marguerite Mauritz, Ulf Molau, Isla H. Myers-Smith, Susan M. Natali, Steven F. Oberbauer, Zoe Panchen, Alessandro Petraglia, Eric Post, Christian Rixen, Heidi Rodenhizer, Sabine B. Rumpf, Niels Martin Schmidt, Ted Schuur, Philipp R. Semenchuk, Jane Griffin Smith, Katharine Suding, Ørjan Totland, Tiffany G. Troxler, Henrik Wahren, Jeffrey M. Welker, Sonja Wipf, Yue Yang
2022, Arctic Science (8) 1026-1039
Observations of changes in phenology have provided some of the strongest signals of the effects of climate change on terrestrial ecosystems. The International Tundra Experiment (ITEX), initiated in the early 1990s, established a common protocol to measure plant phenology in tundra study areas across the globe. Today, this valuable collection...
A novel framework to predict relative habitat selection in aquatic systems: Applying machine learning and resource selection functions to acoustic telemetry data from multiple shark species
Lucas P. Griffin, Grace A. Casselberry, Kristen Hart, Adrian Jordaan, Sarah L. Becker, Ashleigh J. Novak, Bryan M. DeAngelis, Clayton G. Pollock, Ian Lundgren, Zandy Hillis-Starr, Andy J. Danylchuk, Gregory B. Skomal
2022, Frontiers in Marine Science (8)
Resource selection functions (RSFs) have been widely applied to animal tracking data to examine relative habitat selection and to help guide management and conservation strategies. While readily used in terrestrial ecology, RSFs have yet to be extensively used within marine systems. As acoustic telemetry continues to be a pervasive approach...
Evidence for maternal style among adult female dolphins when sharing pectoral fin contacts with their calves
Kathleen M. Dudzinski, Christine Ribic, Heather M. Manitzas Hill, Teresa T. Bolton
2022, Animal Behavior and Cognition (8) 52-68
Adult bottlenose dolphins share pectoral fin contacts (PFC) to manage their social relationships but less is known about how mothers share PFC with their calves. Using a dataset collected over 16 years, we analyzed how 10 matrilines, including three second generation female dolphins in a maternal role, used PFC with...
River floodplain abandonment and channel deepening coincide with the onset of clear-cut logging in a coastal California redwood forest
William A. L. Chapman, Noah J. Finnegan, Allison M. Pfeiffer, SeanPaul La Selle
2022, Earth Surface Processes and Landforms (47) 994-1012
Changes in both land use and climate can alter the balance of transport capacity and sediment supply in rivers. Hence, the primary driver of recent incision or aggradation in alluvial channels is often unclear. The San Lorenzo River on the central coast of California is one location where both climate...
Sr, Nd, Hf and Pb isotope geochemistry of Early Miocene shoshonitic lavas from the South Fiji Basin: Note
Nick Mortimer, Delphine Bosch, Christine Laporte-Magoni, Erin Todd, James B Gill
2022, New Zealand Journal of Geology and Geophysics (65) 374-379
We present new Sr, Nd, Hf and Pb isotope data for Early Miocene shoshonitic and high-K lavas dredged from seamounts in the South Fiji Basin, southwest Pacific Ocean. Our analyses provide a useful reference dataset for this distinctive compositional suite. The shoshonitic lavas formed in an intra-oceanic back-arc basin setting...
S2HM must be real-time or not?
Mehmet Celebi, Maria Limongelli
2022, Conference Paper, European workshop on structural health monitoring: Special collection of 2020 papers - Volume 1
Seismic structural health monitoring (S2HM) has advanced significantly in the last three decades. However, currently there is no consensus on the need for real-time processing of data acquired during an earthquake. Numerous applications exist whereby S2HM-equipped systems record valuable seismic response data. A delayed use of the seismic data prohibits...
Tungsten skarn potential of the Yukon-Tanana Upland, eastern Alaska, USA—A mineral resource assessment
George N.D. Case, Garth E. Graham, Erin E. Marsh, Ryan D. Taylor, Carlin J. Green, Philip J. Brown, Keith A. Labay
2022, Journal of Geochemical Exploration (232)
Tungsten (W) is used in a variety of industrial and technological applications and has been identified as a critical mineral for the United States, India, the European Union, and other countries. These countries rely on W imports mostly from China, which leaves them vulnerable to supply disruption. Consequently, the U.S. government has...
Identifying turbulence features hindering swimming capabilities of grass carp larvae (Ctenopharyngodon idella) through submerged vegetation
Rafael O. Tinoco, Andres F. Prada, Amy E. George, Benjamin H. Stahlschmidt, P. Ryan Jackson, Duane Chapman
2022, Journal of Ecohydraulics (7) 4-16
Aquatic vegetation can provide habitat and refuge for a variety of species in streams. However, the flow features generated by submerged patches of vegetation can also pose a challenge for fish larvae. We conducted a series of experiments with live grass carp larvae (starting ∼50 h post hatch)...
Environmental evolution of peat in the Sacramento – San Joaquin Delta (California) during the Middle and Late Holocene as deduced from pollen, diatoms and magnetism
Irina Delusina, Scott W. Starratt, Kenneth L Verosub
2022, Quaternary International (621) 50-61
We studied the sequence of climatic and hydrological events associated with the formation of peat during the Holocene, using pollen, diatoms and environmental magnetism from peat cores at three locations in the Sacramento-San Joaquin Delta of California: Browns Island, Franks Wetland and Webb Track Levee. Our data show that peat...
Understanding rates of change: A case study using fossil pollen records from California to assess the potential for and challenges to a regional data synthesis
Lysanna Anderson, David Wahl, T. Bhattacharya
2022, Quaternary International (621) 26-36
Insights into the rates at which ecosystems and vegetation respond to a changing climate is fundamental to anticipating impacts of projected climate change. Characterization of vegetation change over millennia to centuries has potential to make an important contribution toward this goal, and regional scale syntheses of fossil pollen data can...
Mapping the extent and methods of small-scale emerald mining in the Panjshir Valley, Afghanistan
Jessica D. DeWitt, Peter G. Chirico, Kelsey L. O’Pry, Sarah E. Bergstresser
2022, Geocarto International (37) 246-267
Emerald mining in the Panjshir Valley, Afghanistan, has occurred for thousands of years, yet few records exist documenting the detailed spatial extent, techniques, or productivity of small-scale miners. This study proposes new methods to map and monitor the extent and changes in small-scale mining in remote and inaccessible terrain by...
