Selection of habitat-enhancing plants depends on predator-prey interactions
G. Coppola, Leandro E. Miranda, M. E. Colvin, H. R. Hatcher, M. A. Lashley
2021, Journal of Fish and Wildlife Management (12) 294-307
Shallow areas of drawdown reservoirs are often devoid of adequate fish habitat due to degradation associated with unnatural and relatively invariable cycles of exposure and flooding. One method of enhancing fish habitat in these areas is to sow exposed shorelines with agricultural plants to provide structure once flooded. It remains...
Do crayfish affect stream ecosystem response to riparian vegetation removal?
Maura P. Dudley, Kelsey Solomon, Seth J. Wenger, C. Rhett Jackson, Mary Freeman, Katherine J. Elliott, Chelcy F. Miniat, Catherine M. Pringle
2021, Freshwater Biology (66) 1423-1435
1. Riparian vegetation management alters stream basal resources, but stream ecosystem responses partly depend on top-down interactions with in-stream consumers. Large-bodied omnivores can exert particularly strong influences on stream benthic environments through consumption of food resources and physical disturbance of the benthos. Trophic dynamics studies conducted within the context of...
Establishment and survival of subalpine fir (Abies lasiocarpa) in meadows of Olympic National Park, Washington
Andrea Woodward, Jonathan A. Soll
2021, Northwest Science (94) 256-270
Establishment of trees in subalpine meadows is a potential indicator of ecological effects of climate change. Tree establishment is a multi-year process including cone and seed production, germination, establishment, and growth, with each demographic step possibly sensitive to different climate limitations. While most studies have focused on one or a...
A small proportion of breeders drive American bullfrog invasion of the Yellowstone River floodplain, Montana
Daniel M. Bingham, Adam Sepulveda, Sally Painter
2021, Northwest Science (94) 231-242
The American bullfrog (Lithobates catesbeianus) is a non-native invader of aquatic habitats across the northwestern United States. It recently invaded the Yellowstone River, Montana, and has spread to over 140 km of floodplain habitat. We analyzed seven microsatellites in 528 tadpoles sampled across nearly the...
Repeated large-scale mechanical treatment of invasive Typha under increasing water levels promotes floating mat formation and wetland methane emissions
Olivia Fayne Johnson, Abha Panda, Shane C. Lishawa, Beth A. Lawrence
2021, Science of the Total Environment (790)
Invasive species management typically aims to promote diversity and wildlife habitat, but little is known about how management techniques affect wetland carbon (C) dynamics. Since wetland C uptake is largely influenced by water levels and highly productive plants, the interplay of hydrologic extremes and <a class="topic-link" title="Learn more about invasive species from...
Prototyping a methodology for long-term (1680-2100) historical-to-future landscape modeling for the conterminous United States
Jordan Dornbierer, Steve Wika, Charles Robison, Gregory Rouze, Terry L. Sohl
2021, Land (10)
Land system change has been identified as one of four major Earth system processes where change has passed a destabilizing threshold. A historical record of landscape change is required to understand the impacts change has had on human and natural systems, while scenarios of future landscape change are required to...
Incorporating climate change in a harvest risk assessment for polar bears Ursus maritimus in Southern Hudson Bay
Eric V. Regehr, Markus Dyck, Samuel A. Iverson, David S. Lee, Nicholas J Lunn, Joseph M Northrup, Marie-Claude Richer, Guillaume Szor, Michael C. Runge
2021, Biological Conservation (258)
Arctic marine mammals are harvested by Indigenous people for subsistence and are socially and culturally important. For ice-dependent species like the polar bear Ursus maritimus, management and conservation require understanding interactions between harvest and sea-ice loss due to climate change. We developed a demographic...
American crocodiles (Crocodylus acutus) as restoration bioindicators in the Florida Everglades
Venetia S. Briggs-Gonzalez, Mathieu Basille, Michael Cherkiss, Frank J. Mazzotti
2021, PLoS ONE (16)
The federally threatened American crocodile (Crocodylus acutus) is a flagship species and ecological indicator of hydrologic restoration in the Florida Everglades. We conducted a long-term capture-recapture study on the South Florida population of American crocodiles from 1978 to 2015 to evaluate the effects of restoration efforts...
Forest evapotranspiration dynamics over a fragmented forest landscape under drought in southwestern Amazonia
Izaya Numata, Kul Bikram Khand, Jeppe Kjaersgaard, Mark A. Cochrane, Sonaira S. Silva
2021, Agricultural and Forest Meteorology (306)
Ongoing climate change and human conversion of forests to other land uses alter regional evapotranspiration dynamics and, consequently, impact associated hydrological systems in Amazonia. We studied the effects of drought and fragmentation on forest evapotranspiration using the surface energy balance-based model METRIC (Mapping Evapotranspiration at high Resolution with Internalized...
Investigation of otolith microstructure and composition for identification of rearing strategies and associated Baker Lake sockeye salmon (Oncorhynchus nerka) smolt production, Washington, 2016–17
Kimberly A. Larsen, Lisa A. Wetzel, Karl D. Stenberg, Angie M. Lind-Null
2021, Open-File Report 2021-1032
Baker River (Washington, USA) sockeye salmon (Oncorhynchus nerka) are a recovering Puget Sound stock that are aided by trap-and-haul and hatchery programs to mitigate for the presence of a high head dam. The relative contribution of hatchery and natural adults to overall production of smolts and recruits is unknown....
Quantifying eruptive and background seismicity, deformation, degassing, and thermal emissions at volcanoes in the United States during 1978–2020
Kevin Reath, Matthew Pritchard, Diana C. Roman, Taryn Lopez, Simon A Carn, Tobias P. Fischer, Zhong Lu, Michael Poland, R. Greg Vaughan, Rick Wessels, L. L. Wike, H. K. Tran
2021, Journal of Geophysical Research (126)
An important aspect of volcanic hazard assessment is determination of the level and character of background activity at a volcano so that deviations from background (called unrest) can be identified. Here, we compile the instrumentally recorded eruptive and noneruptive activity for 161 US volcanoes between 1978 and...
Northern Madtom use of artificial reefs in the St. Clair–Detroit River System
Jennifer Johnson, Justin A. Chiotti, Andrew S Briggs, James C. Boase, Jan-Michael Hessenauer, Edward F. Roseman
2021, North American Journal of Fisheries Management (41) S42-S53
The St. Clair and Detroit rivers historically supported abundant fish populations. However, like many river systems, these rivers have been greatly altered through the creation of navigation channels and other anthropogenic disturbances, resulting in the loss of fish and wildlife habitat and declines in native fish populations. To ameliorate this...
Land conversion and pesticide use degrade forage areas for honey bees in America’s beekeeping epicenter
Dan J. Dixon, Haochi Zheng, Clint Otto
Wolfgang Blenau, editor(s)
2021, PLoS ONE (16) 1-15
A diverse range of threats have been associated with managed bee declines globally. Recent increases of two known threats, land-use change and pesticide use, have resulted from agricultural expansion and intensification notably in the top honey producing state in the United States (U.S.): North Dakota. This study investigated the dual...
Demographic responses to density-dependence by two populations of the Florida Tree Snail, Liguus fasciatus (Gastropoda: Orthalicidae), in Everglades National Park
Walter E. Meshaka, Kenneth G. Rice, Oron L. Bass, Hardin Waddle
2021, The Nautilus (135) 1-10
During May-October 1996, we captured and individually marked and released Florida Tree Snails, Liguus fasciatus, from two sites, a subclimax hammock and a large isolated wild tamarind tree, in the Long Pine Key region of Everglades National Park. Populations shared the same two dominant morphs, castaneozonatus and. cingulatus, both of...
Rapid monitoring of the abundance and spread of exotic annual grasses in the western United States using remote sensing and machine learning
Neal Pastick, Bruce Wylie, Matthew B. Rigge, Devendra Dahal, Stephen P. Boyte, Matthew O. Jones, Brady W Allred, Sujan Parajuli, Zhuoting Wu
2021, AGU Advances (2)
Exotic annual grasses (EAG) are one of the most damaging agents of change in western North America. Despite known socio-environmental effects of EAG there remains a need to enhance monitoring capabilities for better informing conservation and management practices. Here, we integrate field observations, remote sensing and climate data with machine-learning...
Biogeography and ecology of Ostracoda in the U.S. northern Bering, Chukchi, and Beaufort Seas
Laura Gemery, Thomas M. Cronin, Lee W. Cooper, Harry J. Dowsett, Jacqueline M. Grebmeier
2021, PLoS ONE (16)
Ostracoda (bivalved Crustacea) comprise a significant part of the benthic meiofauna in the Pacific-Arctic region, including more than 50 species, many with identifiable ecological tolerances. These species hold potential as useful indicators of past and future ecosystem changes. In this study, we examined benthic ostracodes from...
Gradient self-potential logging in the Rio Grande to identify gaining and losing reaches across the Mesilla Valley
Scott Ikard, Andrew Teeple, Delbert Humberson
2021, Water (13)
The Rio Grande/Río Bravo del Norte (hereinafter referred to as the “Rio Grande”) is the primary source of recharge to the Mesilla Basin/Conejos-Médanos aquifer system in the Mesilla Valley of New Mexico and Texas. The Mesilla Basin aquifer system is the U.S. part of the Mesilla Basin/Conejos-Médanos...
Seasonal activity and diets of bats at uranium mines and adjacent areas near the Grand Canyon
Ernest W. Valdez, Mollie K Hanttula, Jo Ellen Hinck
2021, Western North American Naturalist (81) 1-18
Little information exists on the habitat use and feeding ecology of insectivorous bats in arid ecosystems, especially at and near uranium mines in northern Arizona, within the Grand Canyon watershed. In 2015–2016, we conducted mist-netting, nightly acoustic monitoring (>1 year), and diet analyses of bats,...
A customized framework for regional classification of conifers using automated feature extraction
Cali L. Roth, Peter S. Coates, K. Benjamin Gustafson, Michael P. Chenaille, Mark A. Ricca, Erika Sanchez-Chopitea, Michael L. Casazza
2021, MethodsX (8)
Pinyon and juniper expansion into sagebrush ecosystems is one of the major challenges facing land managers in the Great Basin. Effective pinyon and juniper treatment requires maps that accurately and precisely depict tree location and degree of woodland development so managers can target restoration efforts for early stages of pinyon...
Using the Landsat Burned Area products to derive fire history relevant for fire management and conservation in the state of Florida, southeastern USA
Casey Teske, Melanie K. Vanderhoof, Todd Hawbaker, Joe Noble, J. Kevin Hires
2021, Fire (4)
Development of comprehensive spatially explicit fire occurrence data remains one of the most critical needs for fire managers globally, and especially for conservation across the southeastern United States. Not only are many endangered species and ecosystems in that region reliant on frequent fire, but fire risk analysis, prescribed fire planning,...
Stopover ecology of red knots in southwestern James Bay during southbound migration
Amie MacDonald, Paul Smith, Christian Friis, James E. Lyons, Yves Aubry, Erica Nol
2021, Journal of Wildlife Management (85) 932-944
Many shorebirds rely on small numbers of staging sites during long annual migrations. Numerous shorebird species are declining and understanding the importance of these staging sites is important for successful conservation. We surveyed endangered rufa red knots (Calidris canutus rufa) staging in James Bay, Ontario, Canada, during southbound migration in...
When a typical jumper skips: Itineraries and staging habitats used by Red Knots (Calidris canutus piersmai) migrating between northwest Australia and the New Siberian Islands
Theunis Piersma, Eva Kok, Chris J. Hassell, Yvonne I. Verkuil, Guangchun Lei, He-Bo Peng, Eldar Rakhimberdiev, Paul Howey, Julia Karagicheva, T. Lee Tibbitts, Ying-Chi Chan
2021, Ibis (163) 1235-1251
The ecological reasons for variation in avian migration, with some populations migrating across thousands of kilometres between breeding and non-breeding areas with one or few refuelling stops, in contrast to others that stop more often, remain to be pinned down. Red Knots Calidris canutus are a textbook example of a shorebird species...
Geomorphic expression and slip rate of the Fairweather fault, southeast Alaska, and evidence for predecessors of the 1958 rupture
Robert C. Witter, Adrian Bender, Katherine M. Scharer, Christopher DuRoss, Peter J. Haeussler, Richard O. Lease
2021, Geosphere (17) 711-738
Active traces of the southern Fairweather fault were revealed by light detection and ranging (lidar) and show evidence for transpressional deformation between North America and the Yakutat block in southeast Alaska. We map the Holocene geomorphic expression of tectonic deformation along the southern 30...
Refining the coarse filter approach: Using habitat-based species models to identify rarity and vulnerabilities in the protection of U.S. biodiversity
Anne Davidson, Leah Dunn, Kevin Gergely, Alexa McKerrow, Steven G. Williams, Mackenzie Case
2021, Global Ecology and Conservation (28)
Preserving biodiversity and its many components is a priority of conservation science and how to efficiently allocate resources to preserve healthy populations of as many species, habitats, and ecosystems as possible. We used the U.S. Geological Survey (USGS) Gap Analysis Project (GAP) species models released in 2018, which identify predicted habitats for...
Understanding sea lamprey populations in the Great Lakes prior to broad implementation of sea lamprey control
Kelly F. Robinson, Scott M. Miehls, Michael J. Siefkes
2021, Journal of Great Lakes Research (47) S328-S334
Control of invasive sea lamprey in the Great Lakes with a selective pesticide (lampricide) that targeted larval sea lamprey began in the late 1950's and continues to be one of the main methods for control. Although the Great Lakes Fishery Commission,...
