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Establishing endangered species recovery criteria using predictive simulation modeling

Conor P. McGowan, Daniel H. Catlin, Terry L. Shaffer, Cheri L. Gratto-Trevor, Carol Aron

2014, Biological Conservation (177) 220-229

Listing a species under the Endangered Species Act (ESA) and developing a recovery plan requires U.S. Fish and Wildlife Service to establish specific and measurable criteria for delisting. Generally, species are listed because they face (or are perceived to face) elevated risk of extinction due to issues such as habitat...

Geologic and physiographic controls on bed-material yield, transport, and channel morphology for alluvial and bedrock rivers, western Oregon

James E. O'Connor, Joseph F. Mangano, Scott A. Anderson, J. Rose Wallick, Krista L. Jones, Mackenzie K. Keith

2014, GSA Bulletin (126) 377-397

The rivers of western Oregon have diverse forms and characteristics, with channel substrates ranging from continuous alluvial gravel to bare bedrock. Analysis of several measurable morphologic attributes of 24 valley reaches on 17 rivers provides a basis for comparing nonalluvial and alluvial channels. Key differences are that alluvial reaches have...

Evaluating effects of Everglades restoration on American crocodile populations in south Florida using a spatially-explicit, stage-based population model

Timothy W. Green, Daniel H. Slone, Eric D. Swain, Michael S. Cherkiss, Melinda Lohmann, Frank J. Mazzotti, Kenneth G. Rice

2014, Wetlands (34) S213-S224

The distribution and abundance of the American crocodile (Crocodylus acutus) in the Florida Everglades is dependent on the timing, amount, and location of freshwater flow. One of the goals of the Comprehensive Everglades Restoration Plan (CERP) is to restore historic freshwater flows to American crocodile habitat throughout the Everglades....

Quantifying and valuing ecosystem services: An application of ARIES to the San Pedro River basin, USA

Kenneth J. Bagstad, Darius J. Semmens, Ferdinando Villa, Gary Johnson

2014, Book chapter, Handbook on the Economics of Ecosystem Services and Biodiversity

A large body of research exists that identifies and values ecosystem services - the benefits that ecosystems provide to humans (MA, 2005) - and their underlying ecological processes. However, the development of software decision support tools that integrate ecology, economics and geography that can be independently used within the public,...

The global dispersion of pathogenic microorganisms by dust storms and its relevance to agriculture

Cristina Gonzalez-Martin, Nuria Teigell-Perez, Basilio Valladares, Dale W. Griffin

2014, Book chapter, Advances in agronomy

Dust storms move an estimated 500–5000 Tg of soil through Earth’s atmosphere every year. Dust-storm transport of topsoils may have positive effects such as fertilization of aquatic and terrestrial ecosystems and the evolution of soils in proximal and distal environments. Negative effects may include the stripping of nutrient-rich topsoils from source...

Status of important prey fishes in the U.S. waters of Lake Ontario, 2013: Introduction and methods

Maureen Walsh, Brian Weidel, Michael J. Connerton

2014, NYSDEC Lake Ontario Annual Report 2013-12

Lake Ontario has a mean depth of 86 m (282 ft) and a maximum depth of 244 m (801 ft) (Herdendorf 1982). The southern, New York portion of the lake has the deepest water (Figure 1). In New York waters, about 67% of the lake is <160 m (525 ft)...

Status and trends in the Lake Superior fish community, 2013

Mark Vinson, Lori M. Evrard, Owen T. Gorman, Daniel L. Yule

2014, Report, Compiled reports to the Great Lakes Fishery Commission of the annual bottom trawl and acoustics surveys, 2013

In 2013, the Lake Superior fish community was sampled with daytime bottom trawls at 79 nearshore and 35 offshore locations. In the nearshore zone, a total of 23,432 individuals of 27 species or morphotypes were collected. Nearshore lakewide mean biomass was 5.5 kg ha-1, which was slightly higher than that...

Explanation of temporal clustering of tsunami sources using the epidemic-type aftershock sequence model

Eric L. Geist

2014, Bulletin of the Seismological Society of America (104) 2091-2103

Temporal clustering of tsunami sources is examined in terms of a branching process model. It previously was observed that there are more short interevent times between consecutive tsunami sources than expected from a stationary Poisson process. The epidemic‐type aftershock sequence (ETAS) branching process model is fitted to tsunami catalog events,...

Offset of latest pleistocene shoreface reveals slip rate on the Hosgri strike-slip fault, offshore central California

Samuel Y. Johnson, Stephen R. Hartwell, Peter Dartnell

2014, Bulletin of the Seismological Society of America (104) 1650-1662

The Hosgri fault is the southern part of the regional Hosgri–San Gregorio dextral strike‐slip fault system, which extends primarily in the offshore for about 400 km in central California. Between Morro Bay and San Simeon, high‐resolution multibeam bathymetry reveals that the eastern strand of the Hosgri fault is crossed by an...

Continuous monitoring of Hawaiian volcanoes with thermal cameras

Matthew R. Patrick, Tim R. Orr, Loren Antolik, Robert Lopaka Lee, Kevan P. Kamibayashi

2014, Journal of Applied Volcanology (3)

Continuously operating thermal cameras are becoming more common around the world for volcano monitoring, and offer distinct advantages over conventional visual webcams for observing volcanic activity. Thermal cameras can sometimes “see” through volcanic fume that obscures views to visual webcams and the naked eye, and often provide a much clearer...

Upwelling rebound, ephemeral secondary pycnoclines, and the creation of a near-bottom wave guide over the Monterey Bay continental shelf

Olivia M. Cheriton, Erika E. McPhee-Shaw, Curt D. Storlazzi, Kurt J. Rosenberger, William J. Shaw, Ben Y. Raanan

2014, Geophysical Research Letters (41) 8503-8511

Several sequential upwelling events were observed in fall 2012, using measurements from the outer half of the continental shelf in Monterey Bay, during which the infiltration of dense water onto the shelf created a secondary, near-bottom pycnocline. This deep pycnocline existed in concert with the near-surface pycnocline and enabled the...

Terrestrial bird population trends on Aguiguan (Goat Island), Mariana Islands

Fred Amidon, Richard J. Camp, Ann P. Marshall, Thane K. Pratt, Laura Williams, Paul Radley, Justine B. Cruz

2014, Bird Conservation International (24) 505-517

The island of Aguiguan is part of the Mariana archipelago and currently supports populations of four endemic species, including one endemic genus, Cleptornis. Bird population trends since 1982 were recently assessed on the neighbouring islands of Saipan, Tinian, and Rota indicating declines in some native species. Point-transect surveys were conducted in...

Pedological and geological relationships with soil lichen and moss distribution in the eastern Mojave Desert, CA, USA

Jayne Belnap, David M. Miller, David R. Bedford, Susan L. Phillips

2014, Journal of Arid Environments (106) 45-57

Biological soil crusts (biocrusts) are ubiquitous in drylands globally. Lichens and mosses are essential biocrust components and provide a variety of ecosystem services, making their conservation and management of interest. Accordingly, understanding what factors are correlated with their distribution is important to land managers. We hypothesized that cover would be...

Digital data in support of studies and assessments of coal and petroleum resources in the Appalachian basin

Michael H. Trippi, Scott A. Kinney, Gregory L. Gunther, Robert T. Ryder, Leslie F. Ruppert