Evaluating and using existing models to map probable suitable habitat for rare plants to inform management of multiple-use public lands in the California desert
Gordon Reese, Sarah K. Carter, Christina Lunch, Steve Walterscheid
2019, PLoS ONE (14)
Multiple-use public lands require balancing diverse resource uses and values across landscapes. In the California desert, there is strong interest in renewable energy development and important conservation concerns. The Bureau of Land Management recently completed a land-use plan for the area that provides protection for modeled suitable habitat for multiple...
Long-term population dynamics of dreissenid mussels (Dreissena polymorpha and D. rostriformis): A cross-system analysis
David L. Strayer, Boris V. Adamovich, Rita Adrian, David C. Aldridge, Csilla Balogh, Lyubov E. Burlakova, Hannah Fried-Petersen, Laszlo G.-Toth, Amy L. Hetherington, Thomas S. Jones, Alexander Y. Karatayev, Jacqueline B. Madill, Oleg A. Makarevich, J. Ellen Marsden, Andre L. Martel, Dan Minchin, Thomas F. Nalepa, Ruurd Noordhuis, Timothy J. Robinson, Lars G. Rudstam, Astrid N. Schwalb, David R. Smith, Alan D. Steinman, Jonathan M. Jeschke
2019, Ecosphere (10)
Dreissenid mussels (including the zebra mussel Dreissena polymorpha and the quagga mussel D. rostriformis) are among the world's most notorious invasive species, with large and widespread ecological and economic effects. However, their long‐term population dynamics are poorly known, even though these dynamics are critical to determining impacts and effective management. We gathered and analyzed...
The circumtropical swarm population of the longspined porcupinefish (Diodon holocanthus Linnaeus)
John E Randall, Caroline Rogers, John C Ogden
2019, Aqua (25) 53-80
Evidence is presented that Diodon holocanthus is a circumtropical swarm (not a hybrid swarm because the individuals are not hybrids). Some individuals are so differentfrom one another in both color and morphology that they appear to be different species. Thirty undersea and aquarium photographs from different global localities are provided to demonstrate...
Three-dimensional partitioning of resources by congeneric forest predators with recent sympatry
Julianna M Jenkins, Damon B. Lesmeister, David Wiens, Jonathan T Kane, Van R. Kane, Jake V Verschuyl
2019, Scientific Reports (9) 1-10
Coexistence of ecologically similar species can be maintained by partitioning along one or more niche axes. Three-dimensional structural complexity is central to facilitating resource partitioning between many forest species, but is underrepresented in field-based studies. We examined resource selection by sympatric northern spotted owls (Strix occidentalis caurina), a threatened species...
Can multi-element fingerprinting of soils inform assessments of chemical connectivity between depressional wetlands?
Xiaoyan Zhu, Yuxiang Yuan, David M. Mushet, Marinus L. Otte
2019, Wetlands (39) 1015-1027
The question of wetland connectivity is particularly relevant regarding depressional wetlands because these wetlands often seem to be “isolated” from other wetlands on a landscape. In this study, multi-element fingerprinting of soils was used to assess similarity in element composition of depressional-wetland soils as a measure of wetland connectivity. We...
The rise of an apex predator following deglaciation
Mevin Hooten, George G. Esslinger
2019, Diversity and Distributions (25) 895-908
AimSea otters (Enhydra lutris) are an apex predator of the nearshore marine community and nearly went extinct at the turn of the 20th century. Reintroductions and legal protection allowed sea otters to re‐colonize much of their former range. Our objective was to chronicle the colonization of...
To forage or flee: Lessons from an elk migration near a protected area
Nathaniel Mikle, Tabitha A. Graves, Edward M. Olexa
2019, Ecosphere (10) 1-15
Alteration of wide-ranging wildlife migrations can drastically impact the structure and function of ecosystems, yet the causes and consequences of shifting migration patterns remain largely unknown. Management decisions made in one portion of a landscape may induce spatial and temporal shifts of wildlife use in another, creating tension among private,...
Environmental DNA sampling reveals high occupancy rates of invasive Burmese pythons at wading bird breeding aggregations in the central Everglades
Sophia C. M. Orzechowski, Peter C. Frederick, Robert M. Dorazio, Margaret Hunter
2019, PLoS ONE (14)
The Burmese python (Python bivittatus) is now established as a breeding population throughout south Florida, USA. However, the extent of the invasion, and the ecological impacts of this novel apex predator on animal communities are incompletely known, in large part because Burmese pythons (hereafter “pythons”) are extremely cryptic...
Iron and sulfide nanoparticle formation and transport in nascent hydrothermal vent plumes
Alyssa J. Findlay, Emily Estes, Amy Gartman, Alexey Kamyshny, Mustafa Yucel, George W. Luther
2019, Nature Communications (10)
Deep-sea hydrothermal vents are a significant source of dissolved metals to the global oceans, producing midwater plumes enriched in metals that are transported thousands of kilometers from the vent source. Extensive particle precipitation upon emission of hydrothermal fluids, due to temperature and pH changes during mixing with ambient seawater, controls...
Top-down effect of repatriating bald eagles hinder jointly recovering competitors
Jennyffer Cruz, Steve K. Windels, Wayne E. Thogmartin, Shawn M. Crimmins, Leland H. Grim, James H. Larson, Benjamin Zuckerberg
2019, Journal of Animal Ecology (88) 1054-1065
1. The recovery of piscivorous birds around the world is touted as one of the great conservation successes of the 21st century, but for some species, this success was short-lived. Bald eagles, ospreys, and great blue herons began repatriating Voyageurs National Park, USA, in the mid-20th century. However, after 1990,...
Multi-scale preferential flow processes in an urban streambed under variable hydraulic conditions
Farzaneh MahmoodPoor Dehkordy, Martin A. Briggs, Frederick D. Day-Lewis, Kamini Singha, Ashton Krajnovich, Tyler B. Hampton, Jay P. Zarnetske, Courtney R. Scruggs, Amvrossios C. Bagtzoglou
2019, Journal of Hydrology (573) 168-179
Spatially preferential flow processes occur at nested scales at the sediment-water interface (SWI), due in part to sediment heterogeneities, which may be enhanced in flashy urban streams with heavy road sand influence. However, several factors, including the flow-rate dependence of preferential hyporheic flow and discrete groundwater discharge zones are commonly...
Which trees die during drought? The key role of insect host-tree selection
Nathan L. Stephenson, Adrian J. Das, Nicholas J. Ampersee, Beverly M Bulaon, Julie L. Yee
2019, Journal of Ecology (107) 2383-2401
1. During drought, the tree subpopulations (such as size or vigor classes) that suffer disproportionate mortality can be conceptually arrayed along a continuum defined by the actions of biotic agents, particularly insects. At one extreme, stress dominates: insects are absent or simply kill the most physiologically stressed...
Mini-columns and ghost columns in Columbia river lava
James G. Moore
2019, Journal of Volcanology and Geothermal Research (374) 242-251
The master joints bounding the columns that make up the basal colonnade of large lava flows of the Columbia Plateau are, in places, flanked by sub-horizontal mini-columns that have grown normal to the master joints. The secondary mini-columns grow into the main columns and are clearly younger than them. They...
Relative prediction intervals reveal larger uncertainty in 3D approaches to predictive digital soil mapping of soil properties with legacy data
Travis Nauman, Michael C. Duniway
2019, Geoderma (347) 170-184
Fine scale maps of soil properties enable efficient land management and inform earth system models. Recent efforts to create soil property maps from field observations tend to use similar tree-based machine learning interpolation approaches, but often deal with depth of predictions, validation, and uncertainty differently. One of the main differences...
Effects of short-term, outdoor head-starting on growth and survival in the mojave desert tortoise (gopherus agassizii)
Tracey D. Tuberbille, Kurt A. Buhlmann, Rahel Sollmann, Melia G. Nafus, J. Mark Peaden, Jacob A. Daly, Brian D. Todd
2019, Herpetological Conservation and Biology (14) 171-184
The combination of life-history traits that makes some turtle species vulnerable to population declines also limits their ability to recover even after threats have been addressed. Because juvenile turtle survival is typically lower than adult survival, head-starting, the process of rearing juveniles...
Patterns of primary production and ecological drought in Yellowstone
David P. Thoma, Seth M. Munson, Ann W. Rodman, Roy Renkin, Heidi M. Anderson, Stephanie D. Wacker
2019, Yellowstone Science (27) 34-39
Introduction: Photosynthesis converts sunlight into stored energy in millions of leaves, flowers and seeds that maintain the web of life in Yellowstone. This transformation of energy fixes carbon, supplies organic matter to soils, and can become fuel for wildfire. As the first link of the food chain, new plant...
Factors controlling landslide frequency-area distributions
Hakan Tanyas, Cees J. van Westen, Kate E. Allstadt, Randall W. Jibson
2019, Earth Surface Processes and Landforms (44) 900-917
A power‐law relation for the frequency–area distribution (FAD) of medium and large landslides (e.g. tens to millions of square meters) has been observed by numerous authors. But the FAD of small landslides diverges from the power‐law distribution, with a rollover point below which frequencies decrease for...
Mercury concentrations vary within and among individual bird feathers: A critical evaluation and guidelines for feather use in mercury monitoring programs
Sarah H. Peterson, Joshua T. Ackerman, Matthew Toney, Mark P. Herzog
2019, Environmental Toxicology and Chemistry (38) 1164-1187
Feathers are widely used to represent mercury contamination in birds. Yet, few recommendations exist that provide guidance for using bird feathers in mercury monitoring programs. We conducted a literature review and 5 experiments to show that mercury concentrations vary substantially within (vane >100% higher than calamus) and among (>1000%) individual...
Emerging investigator series: Atmospheric cycling of indium in the northeastern United States
Sarah Jane White, Harold F. Hemond
2019, Environmental Science: Processes and Impacts (21) 623-634
Indium is critical to the global economy and is used in an increasing number of electronics and new energy technologies. However, little is known about its environmental behavior or impacts, including its concentrations or cycling in the atmosphere. This study determined indium concentrations in air particulate matter at five locations...
HyCReWW: A hybrid coral reef wave and water level metamodel
Ana C. Rueda, Laura Cagigal, Stuart Pearson, Jose Antolínez, Curt D. Storlazzi, Ap van Dongeren, Paula Camus, Fernando J. Mendez
2019, Computers & Geosciences (127) 85-90
Wave-induced flooding is a major coastal hazard on tropical islands fronted by coral reefs. The variability of shape, size, and physical characteristics of the reefs across the globe make it difficult to obtain a parameterization of wave run-up, which is needed for risk assessments. Therefore, we developed the HyCReWW metamodel...
Slow-growing and extended-duration seismicity swarms: Reactivating joints or foliations in the Cahuilla Valley Pluton, Central Peninsular Ranges, Southern California
E. Hauksson, Z. Ross, Elizabeth S. Cochran
2019, Journal of Geophysical Research B: Solid Earth (124)
Three prolific earthquake swarms and numerous smaller ones have occurred since 1980 in the Mesozoic igneous plutonic rocks of the Perris block of the Peninsular Ranges, Southern California. The major swarms occurred in 1980–1981, 1983–1984, and 2016–2018, with the latest swarm still ongoing. These swarms have no...
Globally important islands where eradicating invasive mammals will benefit highly threatened vertebrates
Nick D. Holmes, Dena R. Spatz, Steffen Oppel, Bernie Tershy, Donald Croll, Brad Keitt, Piero Genovesi, Ian Burfield, David J. Will, Alexander L. Bond, Alex Wegmann, Alfonso Aguirre-Munoz, Andre F. Raine, Charles R. Knapp, Chung-Hang Hung, David Wingate, Erin Hagen, Federico Mendez-Sanchez, Gerard Rocamora, Hsiao-Wei Yuan, Jakob Fric, James Millett, James M. Russell, Jill Liske-Clark, Eric Vidal, Herve Jourdan, Karl Campbell, Keith Springer, Kristy Swinnerton, Lolita Gibbons-Decherong, Olivier Langrand, M. de L. Brooke, Miguel McMinn, Nancy Bunbury, Nuno Oliveira, Paolo Sposimo, Pedro Geraldes, Pete McClelland, Peter Hodum, Peter G. Ryan, Rafael Borroto-Paez, Ray J. Pierce, Richard Griffiths, Robert N. Fisher, Ross M. Wanless, Stesha A. Pasachnik, Steve Cranwell, Thierry Micol, Stuart H. M. Butchart
2019, PLoS ONE (14)
Invasive alien species are a major threat to native insular species. Eradicating invasive mammals from islands is a feasible and proven approach to prevent biodiversity loss. We developed a conceptual framework to identify globally important islands for invasive mammal eradications to prevent imminent extinctions among highly threatened species using biogeographic...
A strong colonizer rules the trematode guild in an intertidal snail host
Pilar Alda, Nicolas Bonel, Nestor J. Cazzaniga, Sergio R. Martorelli, Kevin D. Lafferty
2019, Ecology (100)
We examined the extent to which supply‐side, niche, and competition theories and concepts help explain a trematode community in which one species comprises 87% of the trematode individuals, and the remaining 15 species each have <3%. We collected and dissected the common and wide‐ranging snail host Heleobia australis over four seasons from...
Plague management of prairie dog colonies: Degree and duration of deltamethrin flea control
David Austin Eads, Dean E. Biggins
2019, Journal of Vector Ecology (44) 40-47
Plague is a flea-borne disease of mammalian hosts. On the grasslands of western North America, plague stifles populations of Cynomys spp. prairie dogs (PDs). To manage plague, PD burrows are treated with 0.05% deltamethrin dust that can suppress flea numbers and plague transmission. Here, we evaluate the degree and duration of deltamethrin...
Regeneration of Metrosideros polymorpha forests in Hawaii after landscape‐level canopy dieback
Linda Mertelmeyer, James D. Jacobi, Dieter Mueller-Dombois, Kevin W. Brinck, Hans Juergen Boehmer
2019, Journal of Vegetation Science (30) 146-155
Questions(a) Have Metrosideros polymorpha trees become re‐established in Hawaiian forests previously impacted by canopy dieback in the 1970s? (b) Has canopy dieback expanded since the 1970s? (c) Can spatial patterns from this dieback be correlated with habitat factors to model future dieback in this area?<p class="article-section__sub-title...
