Baseline and projected future carbon storage and greenhouse-gas fluxes in ecosystems of Alaska
Zhiliang Zhu, A. David McGuire, editor(s)
2016, Professional Paper 1826
This assessment was conducted to fulfill the requirements of section 712 of the Energy Independence and Security Act of 2007 and to contribute to knowledge of the storage, fluxes, and balance of carbon and methane gas in ecosystems of Alaska. The carbon and methane variables were examined for major terrestrial...
Can captive populations function as sources of genetic variation for reintroductions into the wild? A case study of the Arabian oryx from the Phoenix Zoo and the Shaumari Wildlife Reserve, Jordan
Alexander Ochoa, Stuart A. Wells, Gary West, Ma’en Al-Smadi, Sergio A. Redondo, Sydnee R. Sexton, Melanie Culver
2016, Conservation Genetics (17) 1145-1155
The Arabian oryx (Oryx leucoryx) historically ranged across the Arabian Peninsula and neighboring countries until its extirpation in 1972. In 1963–1964 a captive breeding program for this species was started at the Phoenix Zoo (PHX); it ultimately consisted of 11 animals that became known as the ‘World Herd’....
Morphodynamics of prograding beaches: A synthesis of seasonal- to century-scale observations of the Columbia River littoral cell
Peter Ruggiero, George Kaminsky, Guy R. Gelfenbaum, Nicholas Cohn
2016, Marine Geology (376) 51-68
Findings from nearly two decades of research focused on the Columbia River littoral cell (CRLC), a set of rapidly prograding coastal barriers and strand-plains in the U.S. Pacific Northwest, are synthesized to investigate the morphodynamics associated with prograding beaches. Due to a large sediment supply from the Columbia...
Planning for ex situ conservation in the face of uncertainty
Stefano Canessa, Sarah J. Converse, Matt West, Nick Clemann, Graeme Gillespie, Michael McFadden, Aimee J. Silla, Kirsten M Parris, Michael A McCarthy
2016, Conservation Biology (30) 599-609
Ex situ conservation strategies for threatened species often require long-term commitment and financial investment to achieve management objectives. We present a framework that considers the decision to adopt ex situ management for a target species as the end point of several linked decisions. We used a decision tree to intuitively...
Assessment of error rates in acoustic monitoring with the R package monitoR
Jonathan Katz, Sasha D. Hafner, Therese Donovan
2016, Bioacoustics: The International Journal of Animal Sound and its Recording (25) 177-196
Detecting population-scale reactions to climate change and land-use change may require monitoring many sites for many years, a process that is suited for an automated system. We developed and tested monitoR, an R package for long-term, multi-taxa acoustic monitoring programs. We tested monitoR with two northeastern songbird species: black-throated green...
Tools for automated acoustic monitoring within the R package monitoR
Jonathan Katz, Sasha D. Hafner, Therese Donovan
2016, Bioacoustics: The International Journal of Animal Sound and its Recording (25) 197-210
The R package monitoR contains tools for managing an acoustic-monitoring program including survey metadata, template creation and manipulation, automated detection and results management. These tools are scalable for use with small projects as well as larger long-term projects and those with expansive spatial extents. Here, we describe typical workflow when...
Molecular detection of bacteria in the families Rickettsiaceae and Anaplasmataceae in northern crested caracaras (Caracara cheriway)
John A. Erwin, Robert R. Fitak, James F. Dwyer, Joan L. Morrison, Melanie Culver
2016, Ticks and Tick-borne Diseases (7) 470-474
Bacterial pathogens of the families Anaplasmataceae and Rickettsiaceae are often spread to humans or other animals from bites from infected arthropod hosts. Recently, an increasing number of studies have implicated migratory birds in the circulation of these pathogens through the spread of arthropod vectors. However, few studies have examined the potential for resident bird...
Should fatty acid signature proportions sum to 1 for diet estimation?
Jeffrey F. Bromaghin, Suzanne M. Budge, Gregory W. Thiemann
2016, Ecological Research (31) 597-606
Knowledge of predator diets, including how diets might change through time or differ among predators, provides essential insights into their ecology. Diet estimation therefore remains an active area of research within quantitative ecology. Quantitative fatty acid signature analysis (QFASA) is an increasingly common method of diet estimation. QFASA is based...
Comments to Middle Miocene closure of the Central American Seaway
A.G. Coates, Robert F. Stallard
2016, Science (348)
In a recent paper proposing an early (mid-Miocene) closure of the Central American Seaway (CAS), Montes et al. 2015 (1) disregard existing paleogeographic data that invalidate Panama as a source for zircons, and inappropriately ignore the evidence for trans-isthmian marine connections until 4-3 Ma. They also fail to cite previous...
Optical properties of dissolved organic matter (DOM): Effects of biological and photolytic degradation
Angela Hansen, Tamara E. C. Kraus, Brian A. Pellerin, Jacob Fleck, Bryan D. Downing, Brian A. Bergamaschi
2016, Limnology and Oceanography (61) 1015-1032
Advances in spectroscopic techniques have led to an increase in the use of optical properties (absorbance and fluorescence) to assess dissolved organic matter (DOM) composition and infer sources and processing. However, little information is available to assess the impact of biological and photolytic processing on the optical properties of original...
Natural thorium resources and recovery: Options and impacts
Timothy Ault, Bradley S. Van Gosen, Steven Krahn, Allen Croff
2016, Nuclear Technology (194) 136-151
This paper reviews the front end of the thorium fuel cycle, including the extent and variety of thorium deposits, the potential sources of thorium production, and the physical and chemical technologies required to isolate and purify thorium. Thorium is frequently found within rare earth element–bearing minerals that exist in diverse...
Dynamic simulation and numerical analysis of hurricane storm surge under sea level rise with geomorphologic changes along the northern Gulf of Mexico
Matthew V. Bilskie, S.C. Hagen, K.A. Alizad, S.C. Medeiros, Davina Passeri, H.F. Needham, A. Cox
2016, Earth's Future (4) 177-193
This work outlines a dynamic modeling framework to examine the effects of global climate change, and sea level rise (SLR) in particular, on tropical cyclone-driven storm surge inundation. The methodology, applied across the northern Gulf of Mexico, adapts a present day large-domain, high resolution, tide, wind-wave, and hurricane storm surge...
Geologic map of the Morena Reservoir 7.5-minute quadrangle, San Diego County, California
Victoria R. Todd
2016, Open-File Report 95-50
IntroductionMapping in the Morena Reservoir 7.5-minute quadrangle began in 1980, when the Hauser Wilderness Area, which straddles the Morena Reservoir and Barrett Lake quadrangles, was mapped for the U.S. Forest Service. Mapping was completed in 1993–1994. The Morena Reservoir quadrangle contains part of a regional-scale Late Jurassic(?) to Early Cretaceous...
Small but tough: What can ecophysiology of croaking gourami Trichopsis vittatus (Cuvier 1831) tell us about invasiveness of non-native fishes in Florida?
Pamela J. Schofield, Jessica Schulte
2016, NeoBiota (28) 51-65
Trichopsis vittata (Cuvier, 1831) is a small, freshwater gourami (Fam: Osphronemidae) native to southeast Asia. It was first detected in Florida in the 1970s and seems to have persisted for decades in a small area. In this study, we documented T. <span...
MODIS derived vegetation index for drought detection on the San Carlos Apache Reservation
Zhuoting Wu, Miguel G. Velasco, Jason McVay, Barry R. Middleton, John M. Vogel, Dennis G. Dye
2016, International Journal of Advanced Remote Sensing and GIS (5) 1524-1538
A variety of vegetation indices derived from remotely sensed data have been used to assess vegetation conditions, enabling the identification of drought occurrences as well as the evaluation of drought impacts. Moderate Resolution Imaging Spectroradiometer (MODIS) Terra 8-day composite data were used to compute the Modified Soil Adjusted Vegetation Index...
Geologic and geochemical results from boreholes drilled in Yellowstone National Park, Wyoming, 2007 and 2008
Cheryl Jaworowski, David Susong, Henry Heasler, David Mencin, Wade Johnson, Rick Conrey, Jennipher Von Stauffenberg
2016, Open-File Report 2016-1028
Between 2007 and 2008, seven Earthscope Plate Boundary Observatory (PBO) boreholes ranging in depth from about 200 to 800 feet deep were drilled in and adjacent to the Yellowstone caldera in Yellowstone National Park, for the purpose of installing volcano monitoring instrumentation. Five of the seven boreholes were equipped...
One thousand years of fires: Integrating proxy and model data
Natalie M. Kehrwald, Julie C. Aleman, Michael Coughlan, Colin J. Courtney Mustaphi, Esther N. Githumbi, Brian I. Magi, Jennifer R. Marlon, Mitchell J. Power
2016, Frontiers of Biogeography (8)
The current fires raging across Indonesia are emitting more carbon than the annual fossil fuel emissions of Germany or Japan, and the fires are still consuming vast tracts of rainforest and peatlands. The National Interagency Fire Center (www.nifc.gov) notes that 2015 is one worst fire years on record in the...
Palaeodata-informed modelling of large carbon losses from recent burning of boreal forests
Ryan Kelly, Helene Genet, A. David McGuire, Feng Sheng Hu
2016, Nature Climate Change (6) 79-82
Wildfires play a key role in the boreal forest carbon cycle1, <a id="ref-link-2" title="Bond-Lamberty, B., Peckham, S. D., Ahl,...
Regional assessment of persistent organic pollutants in resident mussels from New Jersey and New York estuaries following Hurricane Sandy
Kelly L. Smalling, Ashok D. Deshpande, Heather S. Galbraith, Beth Sharack, DeMond Timmons, Ronald J. Baker
2016, Marine Pollution Bulletin (107) 432-441
Resident mussels are effective indicators of ecosystem health and have been utilized in national assessment and monitoring studies for over two decades. Mussels were chosen because contaminant concentrations in their tissues respond to changes in ambient environmental levels, accumulation occurs with little metabolic transformation and a substantial amount of historic...
Dimmuborgir: a rootless shield complex in northern Iceland
Alasdair Skelton, Erik Sturkell, Martin Jakobsson, Draupnir Einarsson, Elin Tollefsen, Tim R. Orr
2016, Bulletin of Volcanology (78)
The origin of Dimmuborgir, a shield-like volcanic structure within the Younger Laxá lava flow field near Lake Mývatn, in northern Iceland, has long been questioned. New airborne laser mapping (light detection and ranging (LiDAR)), combined with ground-penetrating radar results and a detailed field study, suggests that Dimmuborgir is a complex...
Hydrologic analyses in support of the Navajo Generating Station–Kayenta Mine Complex environmental impact statement
Stanley A. Leake, Jamie P. Macy, Margot Truini
2016, Open-File Report 2016-1088
IntroductionThe U.S. Department of Interior’s Bureau of Reclamation, Lower Colorado Region (Reclamation) is preparing an environmental impact statement (EIS) for the Navajo Generating Station-Kayenta Mine Complex Project (NGS-KMC Project). The proposed project involves various Federal approvals that would facilitate continued operation of the Navajo Generating Station (NGS) from December...
Future land-use related water demand in California
Tamara Wilson, Benjamin M. Sleeter, D. Richard Cameron
2016, Environmental Research Letters (11)
Water shortages in California are a growing concern amidst ongoing drought, earlier spring snowmelt, projected future climate warming, and currently mandated water use restrictions. Increases in population and land use in coming decades will place additional pressure on already limited available water supplies. We used a state-and-transition simulation model to...
New challenges for grizzly bear management in Yellowstone National Park
Frank T. van Manen, Kerry A. Gunther
2016, Bulletin of the Shiretoko Museum (Special Issue 1) 79-96
A key factor contributing to the success of grizzly bear Ursus arctos conservation in the Greater Yellowstone Ecosystem has been the existence of a large protected area, Yellowstone National Park. We provide an overview of recovery efforts, how demographic parameters changed as the population increased, and how the bear management...
Enhancing drought resilience with conjunctive use and managed aquifer recharge in California and Arizona
Bridget R. Scanlon, Robert C. Reedy, Claudia C. Faunt, Donald R. Pool, Kristine; Uhlman
2016, Environmental Research Letters (11)
Projected longer‐term droughts and intense floods underscore the need to store more water to manage climate extremes. Here we show how depleted aquifers have been used to store water by substituting surface water use for groundwater pumpage (conjunctive use, CU) or recharging groundwater with surface water (Managed Aquifer Recharge, MAR)....
Design for mosquito abundance, diversity, and phenology sampling within the National Ecological Observatory Network
D. Hoekman, Yuri P. Springer, C.M. Barker, R. Barrera, M.S. Blackmore, W.E. Bradshaw, D. H. Foley, Howard S. Ginsberg, M. H. Hayden, C. M. Holzapfel, S. A. Juliano, L. D. Kramer, S. L. LaDeau, T. P. Livdahl, C. G. Moore, R.S. Nasci, W.K. Reisen, H. M. Savage
2016, Ecosphere (7)
The National Ecological Observatory Network (NEON) intends to monitor mosquito populations across its broad geographical range of sites because of their prevalence in food webs, sensitivity to abiotic factors and relevance for human health. We describe the design of mosquito population sampling in the context of NEON’s long term continental...
