Caretta caretta (Loggerhead Sea Turtle) nesting exchange
Margaret Lamont, Jennifer S. Walker, Donna J. Shaver
2022, Herpetological Review (52) 626-627
The Northwest Atlantic population of Loggerhead Sea Turtles (Caretta caretta) is one of the largest C. caretta populations in the world and is listed as threatened. This population was divided into five genetically distinct subpopulations, including the Northern Gulf of Mexico (NGoM) subpopulation (Shamblin et al. 2017 Mar. Bio. 164:138)....
Characteristics of day-roosts used by the Northern Long-eared Bat (Myotis septentrionalis) in coastal New York
Katherine M. Gorman, Elaine L. Barr, Tomas Nocera, W. Mark Ford
2022, Northeastern Naturalist (29) 153-170
In North America, Myotis septentrionalis (Northern Long-eared Bat) has experienced precipitous declines from white-nose syndrome. As these bats become rare and difficult to capture, additional day-roost assessments to inform management may fill gaps in our understanding, particularly in habitats and regions where such roosts have never been surveyed. Over 2 summers, we...
Mismatch-induced growth reductions in a clade of Arctic-breeding shorebirds are rarely mitigated by increasing temperatures
Thomas Lameris, Pavel S. Tomkovich, James A. Johnson, R.I. Guy Morrison, Lucas Decicco, Maksim N. Dementyev, Ingrid Tulp, Robert E. Gill Jr., Simeon Lisovski, Job ten Horn, Theunis Piersma, Z. Pohlen, Hans Schekkerman, Mikhail Soloviev, E. Syroechkovsky, Jan A. van Gils, Mikhail Zhemchuzhnikov
2022, Global Change Biology (28) 829-847
In seasonal environments subject to climate change, organisms typically show phenological changes. As these changes are usually stronger in organisms at lower trophic levels than those at higher trophic levels, mismatches between consumers and their prey may occur during the consumers’ reproduction period. While in some species a trophic mismatch...
The silence of the clams: Forestry registered pesticides as multiple stressors on soft-shell clams
Alexandra G. Tissot, Elise F. Granek, Anne W Thompson, Michelle L. Hladik, Patrick W. Moran, Kaegen Scully-Engelmeyer
2022, Science of the Total Environment (819)
Contaminants are ubiquitous in the environment, often reaching aquatic systems. Combinations of forestry use pesticides have been detected in both water and aquatic organism tissue samples in coastal systems. Yet, most toxicological studies focus on the effects of these pesticides individually, at high doses,...
Correspondence analysis for mineral commodity research: An example workflow for mineralized calderas, southwest United States
Joshua Mark Rosera, Drew S Coleman
2022, Natural Resources Research (31) 9-36
Historical mine and mineral deposit datasets are routinely used to inform quantitative mineral assessment models, but they also can contain a wealth of supplementary qualitative information that is generally underutilized. We present a workflow that uses correspondence analysis, an exploratory tool commonly applied to multivariate abundance...
Time to get real with qPCR controls: The frequency of sample contamination and the informative power of negative controls in environmental DNA studies
Patrick Ross Hutchins, Leah Nicole Simantel, Adam Sepulveda
2022, Molecular Ecology Resources (22) 1319-1329
Environmental (e)DNA methods have enabled rapid, sensitive and specific inferences of taxa presence throughout diverse fields of ecological study. However, use of eDNA results for decision-making has been impeded by uncertainties associated with false positive tests putatively caused by sporadic or systemic contamination. Sporadic contamination is...
Range eclipse leads to tenuous survival of a rare lizard species on a barrier atoll
Jonathan Q. Richmond, Elijah Wostl, Robert Reed, Robert N. Fisher
2022, Oryx (56) 63-72
Rediscovery of living populations of a species that was presumed to be extirpated can generate new narratives for conservation in areas suffering from losses in biodiversity. We used field observations and DNA sequence data to verify the rediscovery of the Critically Endangered scincid lizard Emoia slevini on Dåno′,...
Nearshore microfossil assemblages in a Caribbean reef environment show variable rates of recovery following Hurricane Irma
Stephen Mitchell, Jessica Pilarczyk, Michaela Spiske, Bruce E. Jaffe
2022, Sedimentology (69) 1209-1230
Modern microfossil distributions reflect site-specific habitats and provide an opportunity to assess sediment transport pathways in the nearshore environment. When applied to overwash deposits in the geological record, they provide insight into sediment provenance and transport, factors important for understanding patterns of frequency and intensity of...
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...
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...
High-resolution remote sensing and multistate occupancy estimation identify drivers of spawning site selection in fall chum salmon (Oncorhynchus keta) across a sub-Arctic riverscape
Chelsea M. Clawson, Jeffrey A. Falke, Larissa L. Bailey, Joshua Rose, Anupma Prakash, Aaron E. Martin
2022, Canadian Journal of Fisheries and Aquatic Sciences (79) 380-394
Groundwater upwellings provide warmer, stable overwinter temperatures for developing salmon embryos, which may be particularly important in cold, braided, gravel-bed sub-Arctic rivers. We used a three-year time series of aerial counts and remote sensing to estimate the distribution of low and high aggregations of spawning fall chum salmon (Oncorhynchus keta),...
Temporal and petrogenetic links between Mesoproterozoic alkaline and carbonatite magmas at Mountain Pass, California
Kathryn E. Watts, Gordon B. Haxel, David M. Miller
2022, Economic Geology (117) 1-23
Mountain Pass is the site of the most economically important rare earth element (REE) deposit in the United States. Mesoproterozoic alkaline intrusions are spatiotemporally associated with a composite carbonatite stock that hosts REE ore. Understanding the genesis of the alkaline and carbonatite magmas is an essential scientific goal for a...
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...
Three-dimensional electrical resistivity characterization of Mountain Pass, California and surrounding region
Jared R. Peacock, Kevin Denton, David A. Ponce
2021, Geochemistry, Geophysics, Geosystems (22)
The Sulphide Queen carbonatite deposit at Mountain Pass in southeast California is a world class rare earth element (REE) resource. This study images electrical resistivity structure of the REE deposit and surrounding area to characterize resources under cover. An east-west elongated grid (35 × 15 km) of 65 wideband magnetotelluric stations spanning from...
Wolf use of humanmade objects during pup-rearing
David Edward Ausband
2021, Animal Behavior and Cognition (8) 405-414
Some animals use humanmade objects for building and constructing nests or shelter and even for play. Gray wolves (Canis lupus) gather and use humanmade objects discovered in their natural environment. Gathering humanmade objects is a peculiar behavior particularly when there is no immediately apparent benefit to survival or...
Reconnecting the Elwha River: Spatial patterns of fish response to dam removal
Jeffrey J. Duda, Christian E. Torgersen, Samuel J. Brenkman, Roger J. Peters, Kathryn T. Sutton, Heidi A. Connor, Philip R. Kennedy, Stephen C. Corbett, Ethan Z. Welty, Anna Geffre, Josh Geffre, Patrick Crain, Dave Shreffler, John R. McMillan, Mike McHenry, George R. Pess
2021, Frontiers in Ecology and Evolution (9)
The removal of two large dams on the Elwha River was completed in 2014 with a goal of restoring anadromous salmonid populations. Using observations from ongoing field studies, we compiled a timeline of migratory fish passage upstream of each dam. We also used spatially continuous snorkeling surveys in consecutive years...
A statistical framework to track temporal dependence of chlorophyll–nutrient relationships with implications for lake eutrophication management
Qianlinglin Qiu, Zhongyao Liang, Yaoyang Xu, Shin-Ichiro S. Matsuzaki, Kazuhiro Komatsu, Tyler Wagner
2021, Journal of Hydrology (603)
A reliable chlorophyll–nutrient relationship (CNR) is essential for lake eutrophication management. Although the spatial variability of CNRs has been extensively explored, temporal variations of CNRs at the individual lake scale has rarely been discussed. The paucity of information about temporal dependence in CNRs may in part be due to the...
Mapping habitat quality and threats for eastern Black Rails (Laterallus jamaicensis jamaicensis)
Bryan S. Stevens, Courtney J. Conway
2021, Waterbirds (44) 245-256
Documenting the spatial distribution of high-quality habitat patches, the distributions of threats and protected areas, and the vulnerability of habitat patches to changes in environmental conditions is vital for conservation of rare species. Range-wide species distribution models were developed for Black Rails (Laterallus jamaicensis) to...
Lake Ontario cisco population dynamics based on long-term surveys
Brian Weidel, James A. Hoyle, Michael Connerton, Jeremy Holden, Mark R. Vinson
2021, Advances in Limnology (66) 85-103
Prior to European settlement, cisco (Coregonus artedi) were likely one of Lake Ontario’s most abundant fishes but currently represent a small portion of the fish community. To understand how the population has changed over the past 70 years we compared trends in annual catch rates from gillnet and bottom...
A review of sea lamprey dispersal and population structure in the Great Lakes and the implications for control
Margaret F. Docker, Gale Bravener, Colin J Garroway, Peter J. Hrodey, John B. Hume, Nicholas S. Johnson, Sean A. Lewandoski, Jessie L Ogden, Emily C Zollweg-Horan
2021, Journal of Great Lakes Research (47) S549-S569
Understanding the population structure of invasive sea lamprey (Petromyzon marinus) in the Great Lakes basin is essential for an effective control program. We review knowledge of lake connectivity, dispersal during the parasitic stage, and results from phenotypic, demographic, and genetic...
Historical and paleoflood analyses for probabilistic flood-hazard assessments—Approaches and review guidelines
Tessa M. Harden, Karen R. Ryberg, Jim E. O'Connor, Jonathan M. Friedman, Julie E. Kiang
2021, Techniques and Methods 4-B6
Paleoflood studies are an effective means of providing specific information on the recurrence and magnitude of rare and large floods. Such information can be combined with systematic flood measurements to better assess the frequency of large floods. Paleoflood data also provide valuable information about the linkages among climate, land...
A statistical framework to track temporal dependence of chlorophyll–nutrient relationships with implications for lake eutrophication management
Qianlinglin Qiu, Zhongyao Liang, Yaoyang Xu, Shin-ichiro S. Matsuzaki, Kazuhiro Komatsu, Tyler Wagner
2021, Journal of Hydrology (603)
A reliable chlorophyll–nutrient relationship (CNR) is essential for lake eutrophication management. Although the spatial variability of CNRs has been extensively explored, temporal variations of CNRs at the individual lake scale has rarely been discussed. The paucity of information about temporal dependence...
Wild juvenile salmonid abundance in Wisconsin tributaries indicates limited contributions to Lake Michigan fisheries
Eric Wegleitner, Joshua Raabe, Daniel Dembkowski, Nicholas Legler, Daniel A. Isermann
2021, Journal of Great Lakes Research (47) 1824-1835
Natural reproduction of salmonids occurs in many Lake Michigan tributaries, yet little is known about abundance and the potential contribution of wild fish hatching in Wisconsin tributaries. The objectives of our study were to determine if: 1) abundance of wild juvenile salmonids (primarily adfluvial rainbow trout, Oncorhynchus mykiss, referred to...
Diet-driven mercury contamination is associated with polar bear gut microbiota
Sophie Watson, Melissa McKinney, Massimo Pindo, Matthew Bull, Todd C. Atwood, Heidi Hauffe, Sarah Perkins
2021, Scientific Reports (11)
The gut microbiota may modulate the disposition and toxicity of environmental contaminants within a host but, conversely, contaminants may also impact gut bacteria. Such contaminant-gut microbial connections, which could lead to alteration of host health, remain poorly known and are rarely studied in free-ranging wildlife. The...
Dispersion and stratification dynamics in the upper Sacramento River deep water ship channel
Leah Lenoch, Paul Stumpner, Jon R. Burau, Luke C. Loken, Steven Sadro
2021, San Francisco Estuary and Watershed Science (19)
Hydrodynamics control the movement of water and material within and among habitats, where time-scales of mixing can exert bottom-up regulatory effects on aquatic ecosystems through their influence on primary production. The San Francisco Estuary (estuary) is a low-productivity ecosystem, which is in part responsible for constraining higher trophic levels, including...
