Two Ocean Pass: An alternative hypothesis for invasion of Yellowstone Lake by lake trout, and implications for future invasions
Todd M. Koel, Colleen R. Detjens, Alexander V. Zale
2020, Water (12) 1-23
Preventing the interbasin transfer of aquatic invasive species is a high priority for natural resource managers. Such transfers can be made by humans or can occur by dispersal through connected waterways. A natural surface water connection between the Atlantic and Pacific drainages in North America exists at Two Ocean Pass...
Factors affecting sampling strategies for design of an effects‐directed analysis for endocrine‐active chemicals
Jennifer Brennan, Robert W. Gale, David A. Alvarez, Jason P. Berninger, Jessica Kristin Leet, Yan Li, Tyler Wagner, Donald E. Tillitt
2020, Environmental Toxicology and Chemistry (39) 1309-1324
Effects‐directed analysis (EDA) is an important tool for identifying unknown bioactive components in a complex mixture. Such an analysis of endocrine‐active chemicals (EACs) from water sources has promising regulatory implications but also unique logistical challenges. We propose a conceptual EDA (framework) based on a critical review of EDA literature and...
Wildfire reveals transient changes to individual traits and population responses of a native bumble bee (Bombus vosnesenskii)
John Michael Mola, Michael R. Miller, Sean M. O'Rourke, Neal M. Williams
2020, Journal of Animal Ecology (89) 1799-1810
1. Fire-induced changes in the abundance and distribution of organisms, especially plants, can alter resource landscapes for mobile consumers driving bottom-up effects on their population sizes, morphologies, and reproductive potential. We expect these impacts to be most striking for obligate visitors of plants, like bees and other pollinators, but these...
Effect of spatial resolution of satellite images on estimating the greenness and evapotranspiration of urban green spaces
Hamideh Nouri, Pamela L. Nagler, Sattar Chavoshi Borujeni, Armando Barreto Munez, Sina Alaghmand, Behnaz Noori, Alejandro Galindo, Kamel Didan
2020, Hydrological Processes (34) 3183-3199
Urban green spaces (UGS), like most managed land covers, are getting progressively affected by water scarcity and drought. Preserving, restoring and expanding UGS require sustainable management of green and blue water resources to fulfil evapotranspiration (ET) demand for green plant cover. The heterogeneity of UGS with high variation in their...
Sources of variation in maternal allocation in a long-lived mammal
Kaitlin R. Macdonald, Jay J. Rotella, Robert A. Garrott, William A. Link
2020, Journal of Animal Ecology (89) 1927-1940
1.Life history theory predicts allocation of energy to reproduction varies with maternal age, but additional maternal features may be important to the allocation of energy to reproduction.We aimed to characterize age‐specific variation in maternal allocation and assess the relationship between maternal allocation and other static and dynamic maternal features.Mass...
Elevation and elevation-change maps of Fountain Creek, southeastern Colorado, 2015–19
Laura A. Hempel
2020, Scientific Investigations Map 3456
The U.S. Geological Survey, in cooperation with Colorado Springs Utilities, has been collecting topographic data at 10 study areas along Fountain Creek, Colorado, annually since 2012. The 10 study areas are located between Colorado Springs and the terminus of Fountain Creek at the Arkansas River in Pueblo. The purpose of...
Prioritizing uncertainties to improve management of a reintroduction program
Sarah J. Converse
Michael C. Runge, Sarah J. Converse, James E. Lyons, David R. Smith, editor(s)
2020, Book chapter, Structured decision making: Case studies in natural resource management
The success of wildlife reintroduction efforts rests on the demographic performance of released animals. Whooping Cranes in the eastern migratory population—reintroduced beginning in 2001—demonstrate adequate survival but poor reproduction. Managers and scientists have used an iterative process of learning and management to respond to this management challenge, but by 2015,...
Reserve network design for prairie-dependent taxa in South Puget Sound
Sarah J. Converse, Beth Gardner, Steve Morey
Michael C. Runge, Sarah J. Converse, James E. Lyons, David R. Smith, editor(s)
2020, Book chapter, Structured decision making: Case studies in natural resource management
Conserving species requires managing threats, including habitat loss. One approach to managing habitat loss is to identify and protect habitat in networks of reserves. Reserve network design is a type of resource allocation problem: how can we choose the most effective reserve network design given available resources? We undertook development...
Decision analysis of restoration actions for faunal conservation and other stakeholder values: Dauphin Island, Alabama
Elise R. Irwin, K. Ouellette Coffman, E. S. Godsey, Nicholas Enwright, M. Clint Lloyd, K. Joyner, Q. T. Lai
2020, Report
Dauphin Island is a barrier island located in the northern Gulf of Mexico and serves as the only barrier island providing protection to much of the State of Alabama’s coastal natural resources. The ecosystem spans over 3,500 acres of barrier island habitat including, beach, dune, overwash fans, intertidal wetlands, maritime forest and...
Climate-induced abrupt shifts in structural states trigger delayed transitions in functional states
Yanbin Hao, Wenjun Liu, Xingliang Xu, Seth M. Munson, Xiaoyong Cui, Xiaoming Kang, Nianpeng He, Yan Wang
2020, Ecological Indicators (115)
Theoretical models suggest that ecosystems can be found in one of several possible alternative stable states, and a shift in structural stable state (SSS) can trigger a change in functional stable state (FSS). But we still lack the empirical evidence to confirm these states and transitions, and to inform the...
The relationship between biodiversity and wetland cover varies across regions of the conterminous United States
Jeremy S. Dertien, Stella Self, Beth Ross, Kyle Barrett, Robert F. Baldwin
Daehyun Kim, editor(s)
2020, PLoS ONE (15) 1-18
Identifying the factors that determine the spatial distribution of biodiversity is a major focus of ecological research. These factors vary with scale from interspecific interactions to global climatic cycles. Wetlands are important biodiversity hotspots and contributors of ecosystem services, but the association between proportional wetland cover and species richness has...
First record of pughead deformity in the threatened Clear Lake Hitch
Jessica Catherine Kathan, Matthew J. Young, Frederick V. Feyrer
2020, California Fish and Game (106) 186-190
No abstract available....
Using the Delphi process to gather information from a Bald Eagle expert panel
Rebecca Kolstrom, Tammy L. Wilson, Larry M. Gigliotti
2020, Natural Resource Report NPS/SWAN.NRR-2020/2128
Bald eagle (Haliaeetus leucocephalus) populations are classified by the Southwest Alaska Network (SWAN) of the National Park Service as a vital sign of biological integrity, largely because of their importance as an indicator species for environmental contaminants and human disturbance. Though Bald Eagles are plentiful in Alaska, it is still...
Using small unmanned aircraft systems for measuring post-flood high-water marks and streambed elevations
Brandon T. Forbes, Geoffrey DeBenedetto, Jesse E. Dickinson, Claire Bunch, Faith A. Fitzpatrick
2020, Remote Sensing (12)
Floods affected approximately two billion people around the world from 1998–2017, causing over 142,000 fatalities and over 656 billion U.S. dollars in economic losses. Flood data, such as the extent of inundation and peak flood stage, are needed to define the environmental, economic, and social impacts of significant flood events....
Individual and population fitness consequences associated with large carnivore use of residential development
Heather E. Johnson, David Bruce Lewis, Stewart Breck
2020, Ecosphere (11)
Large carnivores are negotiating increasingly developed landscapes, but little is known about how such behavioral plasticity influences their demographic rates and population trends. Some investigators have suggested that the ability of carnivores to behaviorally adapt to human development will enable their persistence, and yet, others have suggested that such landscapes...
Risk-targeted alternatives to deterministic ground motion caps in U.S. seismic provisions
Jonathan P. Stewart, Nico Luco, John D Hooper, C. B. Crouse
2020, Earthquake Spectra (36) 904-923
Since their inception over 20 years ago, the maximum considered earthquake ground motion maps in U.S. building codes have capped probabilistic values with deterministic ground motions from characteristic earthquakes on known active faults. This practice has increasingly been called into question both because of spatially non-uniform risk levels...
Microbiology and oxidation-reduction geochemistry of the water-table and Memphis aquifers in the Allen well field, Shelby County, Tennessee
Thomas D. Byl, Mike Bradley
2020, Conference Paper, Proceedings from the 29th Tennessee water resources symposium
The shallow and Memphis aquifers in Shelby County, Tennessee, are valuable natural resources that are used for domestic, public-supply, and agricultural water use. The Memphis aquifer is the primary source for public supply in West Tennessee and provides 170 to 175 million gallons of water per day for more than...
Seasonal selection of riverine habitat by Spotted Bass and Shorthead Redhorse in a regulated river in the Midwestern U.S.
E.N. Edge, Craig P. Paukert, Lobb III, B. Landwer, T.W. Bonnot
2020, River Research and Applications (36) 1087-1096
Riverine fish populations depend on habitats supporting their resource and life history needs. Dynamic streamflow caused by river regulation or natural events influences the distribution of downstream habitat characteristics. Through studying habitat selection, we can identify the most utilized and valuable habitats for the success of native fishes. We determined...
Forecasting water demand across a rapidly urbanizing region
Georgina M. Sanchez, Adam J. Terando, Jordan W. Smith, Ana Maria Garcia, Chad R. Wagner, Ross K. Meentemeyer
2020, Science of the Total Environment (730)
Urban growth and climate change together complicate planning efforts meant to adapt to increasingly scarce water supplies. Several studies have independently examined the impacts of urban planning and climate change on water demand, but little attention has been given to their combined impact. Here we forecast urban water demand using...
Exploring regional scale metamorphic fabrics in the Yukon Tanana terrane and environs using quantitative domain analyses
Jonathan Saul Caine, James V. Jones III
2020, Conference Paper, 2020 Cordilleran tectonics workshop program and abstracts
Metamorphic rock fabrics such as foliations and lineations provide a rock record of numerous deformational characteristics in the Earth’s crust. When spatial information is combined with fabric data collected at points on geologic maps, the nature and consistency of metamorphic fabrics can be explored through structural domain analysis. This is...
Correlations along a 140 km transect in the westernmost Peach Spring Tuff, and tracing changing facies through depositional environments
David C. Buesch
2020, Conference Paper, Changing facies: The 2020 desert symposium Field guide and proceedings
Tephrochronology is the correlation of tephra beds and tuffs by various means, and it is an important tool in refining stratigraphic and structural interpretations. The 18.78 Ma Peach Spring Tuff (PST) is a large-volume ignimbrite that was deposited across a ~200 km x 360 km area of southeastern California,...
2019 National park visitor spending effects: Economic contributions to local communities, states, and the nation
Catherine Cullinane Thomas, Lynne Koontz
2020, Natural Resource Report NPS/NRSS/EQD/NRR—2020/2110
The National Park Service (NPS) manages the Nation’s most iconic destinations that attract millions of visitors from across the Nation and around the world. Trip-related spending by NPS visitors generates and supports economic activity within park gateway communities. This report summarizes the annual economic contribution analysis that measures how NPS...
Effects of flow diversion on Snake Creek and its riparian cottonwood forest, Great Basin National Park
Derek M. Schook, David J. Cooper, Jonathan M. Friedman, Steven E. Rice, Jamie D. Hoover, Richard D. Thaxton
2020, Natural Resource Report NPS/GRBA/NRR-2020/2104
Snake Creek flows east from the southern Snake Range in Nevada over complex lithology before leaving Great Basin National Park. The river travels over a section of karst limestone where some surface water naturally recharges the groundwater flow system. In 1961 a water diversion pipeline was constructed by downstream water...
Movement ecology and habitat use differences in Black Scoters wintering along the Atlantic coast
H. M. Plumpton, S. G. Gilliland, Beth Ross
2020, Avian Conservation and Ecology (15)
For migratory species such as Black Scoters (Melanitta americana) whose range encompasses a variety of habitats, it is especially important to obtain habitat use information across the species’ range to better understand anthropogenic threats, e.g., marine development and climate change. The objective of our study was to investigate the winter...
7700-year persistence of an isolated, free-living coral assemblage in the Galápagos Islands: A model for coral refugia?
Joshua Feingold, Bernhard Reigl, Katie Hendrickson, Lauren Toth, Hai Cheng, R. Lawrence Edwards, Richard B. Aronson
2020, Coral Reefs (39) 639-647
In an eastern-Pacific coral assemblage at Devil’s Crown, Galápagos Islands, Ecuador, two coral species, Psammocora stellata and Cycloseris (Diaseris) distorta, form dense populations of unattached colonies on sand and rubble substrata. In the Galápagos, living C. (D.) distorta is found only at this single site, whereas populations of P. stellata...
