The need for simultaneous evaluation of ecosystem services and land use change
Ned H. Euliss Jr., Loren M. Smith, Shu-Guang Liu, Min Feng, David M. Mushet, Roger F. Auch, Thomas R. Loveland
2010, Environmental Science & Technology (44) 7761-7763
We are living in a period of massive global change. This rate of change may be almost without precedent in geologic history (1). Even the most remote areas of the planet are influenced by human activities. Modern landscapes have been highly modified to accommodate a growing human population that the...
Factors associated with hunter success for ducks on state-owned lands in Illinois, USA
Joshua D. Stafford, Aaron T. Pearse, Christopher S. Hine, Aaron P. Yetter, Michelle M. Horath
2010, Wildlife Biology (16) 113-122
Factors that influence hunter success for waterfowl are subject to varying levels of control by managers. The relative influence of these factors is poorly understood, but such information may be valuable to guide management actions intended to promote successful hunting and communicate management decisions to constituents. We used bag-check data...
Models for inference in dynamic metacommunity systems
Robert M. Dorazio, Marc Kery, J. Andrew Royle, Matthias Plattner
2010, Ecology (91) 2466-2475
A variety of processes are thought to be involved in the formation and dynamics of species assemblages. For example, various metacommunity theories are based on differences in the relative contributions of dispersal of species among local communities and interactions of species within local communities. Interestingly, metacommunity theories continue to be...
Microbial production of isotopically light iron(II) in a modern chemically precipitated sediment and implications for isotopic variations in ancient rocks
G.E. Tangalos, B.L. Beard, C.M. Johnson, Charles N. Alpers, E.S. Shelobolina, H. Xu, H. Konishi, E. E. Roden
2010, Geobiology (8) 197-208
The inventories and Fe isotope composition of aqueous Fe(II) and solid-phase Fe compounds were quantified in neutral-pH, chemically precipitated sediments downstream of the Iron Mountain acid mine drainage site in northern California, USA. The sediments contain high concentrations of amorphous Fe(III) oxyhydroxides [Fe(III)am] that allow dissimilatory iron reduction (DIR) to...
Interfacing models of wildlife habitat and human development to predict the future distribution of puma habitat
Christopher L. Burdett, Kevin R. Crooks, David M. Theobald, Kenneth R. Wilson, Erin E. Boydston, Lisa A. Lyren, Robert N. Fisher, T. Winston Vickers, Scott A. Morrison, Walter M. Boyce
2010, Ecosphere (1) Article 4
The impact of human land uses on ecological systems typically differ relative to how extensively natural conditions are modified. Exurban development is intermediate-intensity residential development that often occurs in natural landscapes. Most species-habitat models do not evaluate the effects of such intermediate levels of human development and even fewer predict...
Interacting parasites
Kevin D. Lafferty
2010, Science (330) 187-188
Parasitism is the most popular life-style on Earth, and many vertebrates host more than one kind of parasite at a time. A common assumption is that parasite species rarely interact, because they often exploit different tissues in a host, and this use of discrete resources limits competition (<a id="xref-ref-1-1"...
Experimental drought in a tropical rain forest increases soil carbon dioxide losses to the atmosphere
Cory C. Cleveland, William R. Wieder, Sasha C. Reed, Alan R. Townsend
2010, Ecology (91) 2313-2323
Climate models predict precipitation changes for much of the humid tropics, yet few studies have investigated the potential consequences of drought on soil carbon (C) cycling in this important biome. In wet tropical forests, drought could stimulate soil respiration via overall reductions in soil anoxia, but previous research suggests that...
Characterizing 6 August 2007 Crandall Canyon mine collapse from ALOS PALSAR InSAR
Zhong Lu, Charles Wicks Jr.
2010, Geomatics, Natural Hazards and Risk (1) 85-93
We used ALOS InSAR images to study land surface deformation over the Crandall Canyon mine in Utah, which collapsed on 6 August 2007 and killed six miners. The collapse was registered as a ML 3.9 seismic event. An InSAR image spanning the time of the collapse shows 25–30 cm surface...
Estimating migratory game-bird productivity by integrating age ratio and banding data
G.S. Zimmerman, W.A. Link, M.J. Conroy, J.R. Sauer, K.D. Richkus, G. Scott Boomer
2010, Wildlife Research (37) 612-622
Context: Reproduction is a critical component of fitness, and understanding factors that influence temporal and spatial dynamics in reproductive output is important for effective management and conservation. Although several indices of reproductive output for wide-ranging species, such as migratory birds, exist, there has been no theoretical justification for their estimators...
Bayesian change point analysis of abundance trends for pelagic fishes in the upper San Francisco Estuary
James R. Thompson, Wim J. Kimmerer, Larry R. Brown, Ken B. Newman, Ralph Mac Nally, William A. Bennett, Frederick Feyrer, Erica Fleishman
2010, Ecological Applications (20) 1431-1448
We examined trends in abundance of four pelagic fish species (delta smelt, longfin smelt, striped bass, and threadfin shad) in the upper San Francisco Estuary, California, USA, over 40 years using Bayesian change point models. Change point models identify times of abrupt or unusual changes in absolute abundance (step changes)...
Analysis of pelagic species decline in the upper San Francisco Estuary using multivariate autoregressive modeling (MAR)
Ralph Mac Nally, James R. Thomson, Wim J. Kimmerer, Frederick Feyrer, Ken B. Newman, Andy Sih, William A. Bennett, Larry R. Brown, Erica Fleishman, Steven D. Culberson, Gonzalo Castillo
2010, Ecological Applications (20) 1417-1430
Four species of pelagic fish of particular management concern in the upper San Francisco Estuary, California, USA, have declined precipitously since ca. 2002: delta smelt (Hypomesus transpacificus), longfin smelt (Spirinchus thaleichthys), striped bass (Morone saxatilis), and threadfin shad (Dorosoma petenense). The estuary has been monitored since the late 1960s with...
Systematic status of wild Canis in North-central Texas
L. David Mech, Ronald M. Nowak
2010, Southeastern Naturalist (9) 587-594
Skulls of wild Canis collected 2003–2004 in north-central Texas are morphometrically similar to a series taken there and in nearby areas in 1964–1971, which was considered to represent a population of Coyotes (C. latrans) modified through introgression from Red Wolves (C. rufus). A few of the new specimens closely resemble...
Detecting temporal trends in species assemblages with bootstrapping procedures and hierarchical models
Nicholas J. Gotelli, Robert M. Dorazio, Aaron M. Ellison, Gary D. Grossman
2010, Philosophical Transactions of the Royal Society B: Biological Sciences (365) 3621-3631
Quantifying patterns of temporal trends in species assemblages is an important analytical challenge in community ecology. We describe methods of analysis that can be applied to a matrix of counts of individuals that is organized by species (rows) and time-ordered sampling periods (columns). We first developed a bootstrapping procedure to...
Surficial geologic map of the Amboy 30' x 60' quadrangle, San Bernardino County, California
David R. Bedford, David M. Miller, Geoffrey A. Phelps
2010, Scientific Investigations Map 3109
The surficial geologic map of the Amboy 30' x 60' quadrangle presents characteristics of surficial materials for an area of approximately 5,000 km2 in the eastern Mojave Desert of southern California. This map consists of new surficial mapping conducted between 2000 and 2007, as well as compilations from previous surficial...
An approach for modeling sediment budgets in supply-limited rivers
Scott Wright, David J. Topping, David M. Rubin, Theodore S. Melis
2010, Water Resources Research (46)
Reliable predictions of sediment transport and river morphology in response to variations in natural and human-induced drivers are necessary for river engineering and management. Because engineering and management applications may span a wide range of space and time scales, a broad spectrum of modeling approaches has been developed, ranging from...
Winter distribution, movements, and annual survival of radiomarked Vancouver Canada geese in southeast Alaska
Jerry W. Hupp, John I. Hodges Jr., Bruce P. Conant, Brandt W. Meixell, Debbie J. Groves
2010, Journal of Wildlife Management (74) 274-284
Management of Pacific Flyway Canada geese (Branta canadensis) requires information on winter distribution of different populations. Recoveries of tarsus bands from Vancouver Canada geese (B. canadensis fulva) marked in southeast Alaska, USA, ≥4 decades ago suggested that ≥83% of the population was non-migratory and that annual adult survival was high...
Vegetation index methods for estimating evapotranspiration by remote sensing
Edward P. Glenn, Pamela L. Nagler, Alfredo R. Huete
2010, Surveys in Geophysics (31) 531-555
Evapotranspiration (ET) is the largest term after precipitation in terrestrial water budgets. Accurate estimates of ET are needed for numerous agricultural and natural resource management tasks and to project changes in hydrological cycles due to potential climate change. We explore recent methods that combine vegetation indices (VI) from satellites with...
Variation in δ13C and δ15N diet–vibrissae trophic discrimination factors in a wild population of California sea otters
Seth D. Newsome, Gena B. Bentall, M. Tim Tinker, Olav T. Oftedal, Katherine Ralls, James A. Estes, Marilyn L. Fogel
2010, Ecological Applications (20) 1744-1752
The ability to quantify dietary inputs using stable isotope data depends on accurate estimates of isotopic differences between a consumer (c) and its diet (d), commonly referred to as trophic discrimination factors (TDFs) and denoted by Δc-d. At present, TDFs are available for only a few mammals and are usually...
Unmodeled observation error induces bias when inferring patterns and dynamics of species occurrence via aural detections
Brett T. McClintock, Larissa L. Bailey, Kenneth H. Pollock, Theodore R. Simons
2010, Ecology (91) 2446-2454
The recent surge in the development and application of species occurrence models has been associated with an acknowledgment among ecologists that species are detected imperfectly due to observation error. Standard models now allow unbiased estimation of occupancy probability when false negative detections occur, but this is conditional on no false...
USGS perspectives on an integrated approach to watershed and coastal management
Matthew C. Larsen, Pixie A. Hamilton, John W. Haines, Mason Jr.
2010, Marine Technology Society Journal (44) 18-21
The writers discuss three critically important steps necessary for achieving the goal for improved integrated approaches on watershed and coastal protection and management. These steps involve modernization of monitoring networks, creation of common data and web services infrastructures, and development of modeling, assessment, and research tools. Long-term monitoring is needed...
Two-dimensional time dependent hurricane overwash and erosion modeling at Santa Rosa Island
R.T. McCall, J. S. M. Van Theil de Vries, N.G. Plant, A. R. Van Dongeren, J.A. Roelvink, D.M. Thompson, A.J.H.M. Reniers
2010, Coastal Engineering (57) 668-683
A 2DH numerical, model which is capable of computing nearshore circulation and morphodynamics, including dune erosion, breaching and overwash, is used to simulate overwash caused by Hurricane Ivan (2004) on a barrier island. The model is forced using parametric wave and surge time series based on field data and large-scale...
Traffic effects on bird counts on North American Breeding Bird Survey routes
Emily H. Griffith, John R. Sauer, J. Andrew Royle
2010, The Auk (127) 387-393
The North American Breeding Bird Survey (BBS) is an annual roadside survey used to estimate population change in >420 species of birds that breed in North America. Roadside sampling has been criticized, in part because traffic noise can interfere with bird counts. Since 1997, data have been collected on the...
Thresholds in forest bird occurrence as a function of the amount of early-seral broadleaf forest at landscape scales
M.G. Betts, J.C. Hagar, J.W. Rivers, J.D. Alexander, K. McGarigal, B.C. McComb
2010, Ecological Applications (20) 2116-2130
Recent declines in broadleaf-dominated, early-seral forest globally as a function of intensive forest management and/or fire suppression have raised concern about the viability of populations dependent on such forest types. However, quantitative information about the strength and direction of species associations with broadleaf cover at landscape scales are rare. Uncovering...
Thermochronology and tectonics of the Leeward Antilles: Evolution of the southern Caribbean Plate boundary zone
Roelant van der Lelij, Richard A. Spikings, Andrew C. Kerr, Alexandre Kounov, Michael Cosca, David Chew, Diego Villagomez
2010, Tectonics (29)
Tectonic reconstructions of the Caribbean Plate are severely hampered by a paucity of geochronologic and exhumation constraints from anastomosed basement blocks along its southern margin. New U/Pb, 40Ar/39Ar, apatite fission track, and apatite (U-Th)/He data constrain quantitative thermal and exhumation histories, which have been used to propose a model for...
Flying over an infected landscape: Distribution of highly pathogenic avian influenza H5N1 risk in South Asia and satellite tracking of wild waterfowl
Marius Gilbert, Scott H. Newman, John Y. Takekawa, Leo Loth, Chandrashekhar Biradar, Diann J. Prosser, Sivananinthaperumal Balachandran, Mandava Venkata Subba Rao, Taej Mundkur, Baoping Yan, Zhi Xing, Yuansheng Hou, Nyambayar Batbayar, Natsagdorj Tseveenmayadag, Lenny Hogerwerf, Jan Slingenbergh, Xiangming Xiao
2010, EcoHealth (7) 448-458
Highly pathogenic avian influenza (HPAI) H5N1 virus persists in Asia, posing a threat to poultry, wild birds, and humans. Previous work in Southeast Asia demonstrated that HPAI H5N1 risk is related to domestic ducks and people. Other studies discussed the role of migratory birds in the long distance spread of...
