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Filter Total Items: 171122

Coupling large-spatial scale larval dispersal modelling with barcoding to refine the amphi-Atlantic connectivity hypothesis in deep-sea seep mussels

In highly fragmented and relatively stable cold-seep ecosystems, species are expected to exhibit high migration rates and long-distance dispersal of long-lived pelagic larvae to maintain genetic integrity over their range. Accordingly, several species inhabiting cold seeps are widely distributed across the whole Atlantic Ocean, with low genetic divergence between metapopulations on both sides of t
Authors
Elodie Portanier, A. Nicolle, W. Rath, L. Monnet, G. Le Goff, A.-S. Le Port, C. Daguin-Thiébaut, Cheryl Morrison, M.R. Cunha, M. Betters, Craig M. Young, Cindy L. Van Dover, A. Biastoch, E. Thiébaut, Didier Jollivet

UAS-Based Observations of Infrasound Directionality at Stromboli Volcano, Italy

Infrasound (low frequency sound waves) can be used to monitor and characterize volcanic eruptions. However, infrasound sensors are usually placed on the ground, thus providing a limited sampling of the acoustic radiation pattern that can bias source size estimates. We present observations of explosive eruptions from a novel uncrewed aircraft system (UAS)-based infrasound sensor platform that was s
Authors
Alexandra M. Iezzi, Richard M. Buzard, David Fee, Robin S. Matoza, Julia E. Gestrich, Arthur Din Jolly, Markus Schmid, Valeria Cigala, Ulrich Kueppers, Caron E.J. Vossen, Corrado Cimarelli, Giorgio Lacanna, Maurizio Ripepe

Value-aligned planning objectives for restoring North Carolina aquatic resources

Rapid population growth and development in the southeastern United States have resulted in substantial impairment to freshwater aquatic ecosystems. National or regional restoration policies strive to address impaired ecosystems but can suffer from inconsistent and opaque processes. The Clean Water Act, for example, establishes reallocation mechanisms to transfer ecosystem services from sites of di
Authors
Ana María García, Mitchell Eaton, Georgina M. Sanchez, Jennifer L. Keisman, Kirsten Ullman, James Blackwell

Using neutral landscape models to evaluate the umbrella species concept in an ecotone

ContextSteep declines in North American rangeland biodiversity have prompted researchers and managers to use umbrella species as a tool to manage diverse suites of co-occurring wildlife, but efficacy of this method has been variable. Evaluation of prairie and shrubland grouse as umbrellas is typically restricted to observed overlap between umbrella and background species, but this approach does no
Authors
Courtney Duchardt, Adrian P. Monroe, David R. Edmunds, Matthew James Holloran, Alison G. Holloran, Cameron L. Aldridge

A conceptual framework for estimation of initial emergency food and water resource requirements in disasters

Many households lack the necessary food and water supplies to sustain themselves for more than three days during a disaster. Community vulnerability assessments can be used to identify households with more pressing needs for emergency food and water resources. It is critical that these assessments include the interaction between physical impacts to lifeline infrastructure and the social vulnerabil
Authors
Joseph Charles Toland, Anne Wein, An-Min Wu, Lauryn Spearing

Inferring pathogen presence when sample misclassification and partial observation occur

Surveillance programmes are essential for detecting emerging pathogens and often rely on molecular methods to make inference about the presence of a target disease agent. However, molecular methods rarely detect target DNA perfectly. For example, molecular pathogen detection methods can result in misclassification (i.e. false positives and false negatives) or partial detection errors (i.e. detecti
Authors
Evan H. Campbell Grant, Riley O. Mummah, Brittany A. Mosher, Jonah Evans, Graziella Vittoria Direnzo

Model-based assessment and mapping of total phosphorus enrichment in rivers with sparse reference data

Water nutrient management efforts are frequently coordinated across thousands of water bodies, leading to a need for spatially extensive information to facilitate decision making. Here we explore potential applications of a machine learning model of river low-flow total phosphorus (TP) concentrations to support landscape nutrient management. The model was trained, validated, and then applied for a
Authors
Peter C. Esselman, R Jan Stevenson

Climate change and the global redistribution of biodiversity: Substantial variation in empirical support for expected range shifts

BackgroundAmong the most widely predicted climate change-related impacts to biodiversity are geographic range shifts, whereby species shift their spatial distribution to track their climate niches. A series of commonly articulated hypotheses have emerged in the scientific literature suggesting species are expected to shift their distributions to higher latitudes, greater elevations, and deeper dep
Authors
Madeleine A. Rubenstein, Sarah R. Weiskopf, Romain Bertrand, Shawn Carter, Lise Comte, Mitchell Eaton, Ciara G. Johnson, Jonathan Lenoir, Abigail Lynch, Brian W. Miller, Toni Lyn Morelli, Mari Angel Rodriguez, Adam Terando, Laura Thompson

Shorebird monitoring using spatially explicit occupancy and abundance

Loss of habitat and human disturbance are major factors in the worldwide decline of shorebird populations, including that of the threatened migratory piping plover (Charadrius melodus). From 2013 to 2018, we conducted land-based surveys of the shorebird community every other week during the peak piping plover season (September to March). We assessed the ability of a thin plate spline occupancy mod
Authors
Eve Bohnett, Jessica Schulz, Robert C. Dobbs, Thomas Hoctor, Dave Hulse, Bilal Ahmad, Wajid Rashid, Hardin Waddle

Climate change risks to freshwater subsistence fisheries in Arctic Alaska: Insights and uncertainty from broad whitefish Coregonus nasus

Arctic freshwater ecosystems and fish populations are largely shaped by seasonal and long-term watershed hydrology. In this paper, we hypothesize how changing air temperature and precipitation will alter freeze and thaw processes, hydrology, and instream habitat to assess potential indirect effects, such as the change to the foraging and behavioral ecology, on Arctic fishes, using Broad Whitefish 
Authors
Jason C. Leppi, Daniel J. Rinella, Mark S. Wipfli, Anna K. Liljedahl, Andrew C. Seitz, Jeffrey A. Falke

Rebuttal to correspondence on “sediment sources and sealed-pavement area drive polycyclic aromatic hydrocarbon and metal occurrence in urban streams

No abstract available.
Authors
Travis S. Schmidt, Christopher C. Fuller, Sharon L. Qi, Allen C. Gellis

Effects of nitrate and conductivity on embryo-larval fathead minnows

Nitrate concentrations have been rising in surface waters over the last century and now frequently exceed drinking water standards and environmental safety benchmarks globally. Health-wise, these trends are concerning because nitrate has been shown to disrupt endocrine function and developmental outcomes. The present study investigated potential sublethal effects of nitrate on developing fathead m
Authors
Thea Margaret Edwards, Daniel J. Lamm, Joel J. Harvey