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Publications

This list of publications includes peer-review journal articles, official USGS publications series, reports and more authored by scientists in the Ecosystems Mission Area. A database of all USGS publications, with advanced search features, can be accessed at the USGS Publications Warehouse.  

Filter Total Items: 42874

Intra‐Annual Changes in Waterborne Nanophyetus salmincola Intra‐Annual Changes in Waterborne Nanophyetus salmincola

An analysis of daily water samples collected from an index site on Big Soos Creek, Washington indicated intra‐annual differences in the concentrations of waterborne Nanophyetus salmincola. Waterborne concentrations, quantified as gene copies/L, peaked during the fall (October–November 2016), decreased to very low concentrations over the winter (January–March 2017), and then increased in...
Authors
Paul Hershberger, Rachel Powers, Bonnie L Besijn, J. Rankin, Mark A. Wilson, B Antipa, J Bjelland, Ashley Mackenzie, Jacob Gregg, Maureen Purcell

Salinity yield modeling of the Upper Colorado River Basin using 30-meter resolution soil maps and random forests Salinity yield modeling of the Upper Colorado River Basin using 30-meter resolution soil maps and random forests

Salinity loading in the Upper Colorado River Basin (UCRB) costs local economies upwards of $300 million US dollars annually. Salinity source models have generally included coarse spatial data to represent non‐agriculture sources. We developed new predictive soil property and cover maps at 30 m resolution to improve source representation in salinity modeling. Salinity loading erosion risk...
Authors
Travis Nauman, Christopher P. Ely, Matthew Miller, Michael C. Duniway

Context matters: Using reinforcement learning to develop human-readable, state-dependent outbreak response policies Context matters: Using reinforcement learning to develop human-readable, state-dependent outbreak response policies

The number of all possible epidemics of a given infectious disease that could occur on a given landscape is large for systems of real-world complexity. Furthermore, there is no guarantee that the control actions that are optimal, on average, over all possible epidemics are also best for each possible epidemic. Reinforcement learning (RL) has been used to develop machine-readable context...
Authors
William J. M. Probert, Sandya Lakkur, Christopher J Fonnesbeck, Katriona Shea, Michael C. Runge, Michael J. Tildesley, Matthew J. Ferrari

Development of microsatellite loci for two New World vultures (Cathartidae) Development of microsatellite loci for two New World vultures (Cathartidae)

Objective Use next-generation sequencing to develop microsatellite loci that will provide the variability necessary for studies of genetic diversity and population connectivity of two New World vulture species.Results We characterized 11 microsatellite loci for black vultures (Coragyps atratus) and 14 loci for turkey vultures (Cathartes aura). These microsatellite loci were grouped into...
Authors
Darren J Wostenberg, Jennifer A. Fike, Sara J. Oyler-McCance, Michael L. Avery, Antoinette J. Piaggio

Effects of climate change on habitat and connectivity for populations of a vulnerable, endemic salamander in Iran Effects of climate change on habitat and connectivity for populations of a vulnerable, endemic salamander in Iran

Habitat loss and fragmentation are among the biggest threats to amphibian populations and anthropogenic climate change may exacerbate these. The response of Iran's amphibians to climate change is uncertain and yet making an accurate prediction of how the species will respond is critical for conservation. We assessed how expected future climate scenarios before the years 2050 and 2070...
Authors
Mohammad Reza Ashrafzadeh, Ali Asghar Naghipour, Maryam Haidarian, Szilvia Kusza, David S. Pilliod

Effect of corolla slitting and nectar robbery by the Eastern Carpenter Bee (Hymenoptera: Apidae) on fruit quality of Vaccinium corymbosum, L.; (Ericales: Ericaceae). Effect of corolla slitting and nectar robbery by the Eastern Carpenter Bee (Hymenoptera: Apidae) on fruit quality of Vaccinium corymbosum, L.; (Ericales: Ericaceae).

Eastern carpenter bees, Xylocopa virginica (L.) (Hymenoptera: Apidae), are among the most abundant native bee visitors to highbush blueberry, Vaccinium corymbosum L., flowers in the northeastern United States, and they sometimes display corolla-slitting behavior to rob nectar. We studied foraging behavior of X. virginica on 14 blueberry cultivars in an experimental planting in Rhode...
Authors
Sara K Tucker, Howard S. Ginsberg, Steven R. Alm

Movements of juvenile Pacific Lamprey (Entosphenus tridentatus) in the Yakima and Columbia Rivers, Washington, 2018—A pilot study using acoustic telemetry Movements of juvenile Pacific Lamprey (Entosphenus tridentatus) in the Yakima and Columbia Rivers, Washington, 2018—A pilot study using acoustic telemetry

Telemetry has been an invaluable tool to improve our understanding of adult Pacific Lamprey (Entosphenus tridentatus) movements and to guide management approaches to protect and restore this species of concern. Juvenile and larval lamprey, however, are much smaller than adults, and have not been monitored with telemetry because available transmitters have traditionally been too large...
Authors
Theresa L. Liedtke, Ralph T. Lampman, Z. Daniel Deng, Tyler E. Beals, Michael S. Porter, Amy C. Hansen, Tobias J. Kock, Ryan G. Tomka, Patrick Monk

Tools to understand seasonality in health: quantification of microbe loads and analyses of compositional ecoimmunological data reveal complex patterns in Mojave Desert Tortoise (Gopherus agassizii) populations Tools to understand seasonality in health: quantification of microbe loads and analyses of compositional ecoimmunological data reveal complex patterns in Mojave Desert Tortoise (Gopherus agassizii) populations

Using data from six wild Mojave Desert Tortoise (Gopherus agassizii (Cooper, 1861)) populations, we quantified seasonal differences in immune system measurements and microbial load in the respiratory tract, pertinent to this species’ susceptibility to upper respiratory tract disease. We quantified bacteria-killing activity of blood plasma and differential leukocyte counts to detect...
Authors
F. C. Sandmeier, K. L. Leonard, C. R. Tracy, K. Kristina Drake, Todd Esque, K. E. Nussear, J Germano

Ecosystem processes, landcover, climate, and human settlement shape dynamic distributions for golden eagle across the western US Ecosystem processes, landcover, climate, and human settlement shape dynamic distributions for golden eagle across the western US

Species–environment relationships for highly mobile species outside of the breeding season are often highly dynamic in response to the collective effects of ever‐changing climatic conditions, food resources, and anthropogenic disturbance. Capturing dynamic space‐use patterns in a model‐based framework is critical as model inference often drives place‐based conservation planning. We...
Authors
J. D. Tack, B.R. Noon, Zachary H. Bowen, B.C. Fedy

Seed-vectored microbes: Their roles in improving seedling fitness and competitor plant suppression Seed-vectored microbes: Their roles in improving seedling fitness and competitor plant suppression

This chapter discusses the role of seed-vectored microbes in modulating seedling development and increasing fitness of plants in terms of increased biotic and abiotic stress tolerance.
Authors
James F. White, Kathryn L. Kingsley, Susan Butterworth, Lara Brindisi, Judy W Gatei, Matthew T. Elmore, Satish Kumar Verma, Xiang Yao, Kurt P. Kowalski

Linking management planning for coastal wetlands to potential future wave attenuation under a range of relative sea-level rise scenarios Linking management planning for coastal wetlands to potential future wave attenuation under a range of relative sea-level rise scenarios

Understanding changes in wave attenuation by emergent vegetation as wetlands degrade or accrete over time is crucial for incorporation of wetlands into holistic coastal risk management. Linked SLAMM and XBeach models were used to investigate potential future changes in wave attenuation over a 50-year period in a degrading, subtropical wetland and a prograding, temperate wetland. These...
Authors
Ann Hijuelos, Jasper Dijkstra, Tim J. B. Carruthers, Karel Heynert, Denise Reed, Bregje van Wesenbeeck

Hydrologic lag effects on wetland greenhouse gas fluxes Hydrologic lag effects on wetland greenhouse gas fluxes

Hydrologic margins of wetlands are narrow, transient zones between inundated and dry areas. As water levels fluctuate, the dynamic hydrology at margins may impact wetland greenhouse gas (GHG) fluxes that are sensitive to soil saturation. The Prairie Pothole Region of North America consists of millions of seasonally-ponded wetlands that are ideal for studying hydrologic transition states...
Authors
Brian Tangen, Sheel Bansal
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