Remote sensing of evapotranspiration for operational drought monitoring using principles of water and energy balance
Gabriel B. Senay, Stefanie Bohms, James P. Verdin, Martha C. Anderson, Christopher Hain, Brian D. Wardlow, Agustin Pimstein, John R. Mecikalski, William P. Kustas
Brian D. Wardlow, Martha C. Anderson, James P. Verdin, editor(s)
2012, Book chapter, Remote sensing of drought: Innovative monitoring approaches
Evapotranspiration (ET) is an important component of the hydrologic budget because it režects the exchange of mass and energy between the soil-water-vegetation system and the atmosphere. Prevailing weather conditions inžuence potential or reference ET through variables such as radiation, temperature, wind, and relativity humidity. In addition to these weather variables,...
Will inundation and salinity levels associated with projected sea level rise reduce the survival, growth, and reproductive capacity of Sarcocornia pacifica (pickleweed)?
I. Woo, John Y. Takekawa
2012, Aquatic Botany (102) 8-14
In the San Francisco Bay Estuary, CA, USA, sea level rise (SLR) is projected to increase by 1.4 m during the next 90 years resulting in increased inundation and salt water intrusion up-estuary. Since inundation and salinity are critical factors that drive vegetation structure and composition in coastal wetlands, we...
Blackrock: biological hotspot and hotbed of collaboration
Erin Muths, Jim Wilson
2012, Report
Amphibian decline is a problem of global importance, with over 40 percent of species considered at risk. This phenomenon is not limited to the tropics or to other countries; amphibian species in the United States are also declining, contributing to the larger global phenomenon. For example, in Wyoming, the Wyoming...
Translocation as a conservation tool for Agassiz's desert tortoises: survivorship, reproduction, and movements
K.E. Nussear, C.R. Tracy, P.A. Medica, D.S. Wilson, R.W. Marlow, P.S. Corn
2012, Journal of Wildlife Management (76) 1341-1353
We translocated 120 Agassiz's desert tortoises to 5 sites in Nevada and Utah to evaluate the effects of translocation on tortoise survivorship, reproduction, and habitat use. Translocation sites included several elevations, and extended to sites with vegetation assemblages not typically associated with desert tortoises in order to explore the possibility...
Prevalent flucocorticoid and androgen activity in US water sources
Diana A. Stavreva, Anuja A. George, Paul Klausmeyer, Lyuba Varticovski, Daniel Sack, Ty C. Voss, R. Louis Schiltz, Vicki Blazer, Luke R. Iwanowicz, Gordon L. Hager
2012, Scientific Reports (2)
Contamination of the environment with endocrine disrupting chemicals (EDCs) is a major health concern. The presence of estrogenic compounds in water and their deleterious effect are well documented. However, detection and monitoring of other classes of EDCs is limited. Here we utilize a high-throughput live cell assay based on sub-cellular...
Restoration of movement patterns of the Hawaiian Goose
Steven C. Hess, Christina R. Leopold, Kathleen Misajon, Darcy Hu, John J. Jeffrey
2012, Wilson Journal of Ornithology (124) 478-486
We used visual observations of banded individuals and satellite telemetry from 2007 to 2011 on Hawai′i Island to document movement patterns of the Hawaiian Goose (Branta sandvicensis), commonly known as Nene. Visual observations of numbered leg bands identified >19% and ≤10% of 323 geese at one of two breeding sites...
Trajectory of early tidal marsh restoration: elevation, sedimentation and colonization of breached salt ponds in the northern San Francisco Bay
L. Arriana Brand, Lacy M. Smith, John Y. Takekawa, Nicole D. Athearn, Karen Taylor, Gregory Shellenbarger, David H. Schoellhamer, Renee Spenst
2012, Ecological Engineering (42) 19-29
Tidal marsh restoration projects that cover large areas are critical for maintaining target species, yet few large sites have been studied and their restoration trajectories remain uncertain. A tidal marsh restoration project in the northern San Francisco Bay consisting of three breached salt ponds (≥300 ha each; 1175 ha total)...
User Manual for SAHM package for VisTrails
C.B. Talbert, M.K. Talbert
2012, Report
The Software for Assisted Habitat I\•1odeling (SAHM) has been created to both expedite habitat modeling and help maintain a record of the various input data, pre-and post-processing steps and modeling options incorporated in the construction of a species distribution model. The four main advantages to using the combined VisTrail: SAHM...
The spatial scale for cisco recruitment dynamics in Lake Superior during 1978-2007
Benjamin J. Rook, Michael J. Hansen, Owen T. Gorman
2012, North American Journal of Fisheries Management (32) 499-514
The cisco Coregonus artedi was once the most abundant fish species in the Great Lakes, but currently cisco populations are greatly reduced and management agencies are attempting to restore the species throughout the basin. To increase understanding of the spatial scale at which density‐independent and density‐dependent factors influence cisco recruitment dynamics in...
The paradox of extreme high-altitude migration in bar-headed geese Anser indicus
L.A. Hawkes, S. Balachandran, N. Batbayar, P.J. Butler, B. Chua, David C. Douglas, P.B. Frappell, Y. Hou, W.K. Milsom, S. H. Newman, D.J. Prosser, P. Sathiyaselvam, G. R. Scott, John Y. Takekawa, T. Natsagdorj, M. Wikelski, M.J. Witt, B. Yan, C.M. Bishop
2012, Proceedings of the Royal Society B (280)
Bar-headed geese are renowned for migratory flights at extremely high altitudes over the world's tallest mountains, the Himalayas, where partial pressure of oxygen is dramatically reduced while flight costs, in terms of rate of oxygen consumption, are greatly increased. Such a mismatch is paradoxical, and it is not clear why...
Population dynamics of Corbicula fluminea (Müller, 1774) in mesohaline and oligohaline habitats: Invasion success in a Southern Europe estuary
J.N. Franco, F.R. Ceia, J. Patricio, Janet K. Thompson, J.C. Marques, J.M. Neto
2012, Estuarine, Coastal and Shelf Science (112) 31-39
Due to its range expansion and potential ecological effects, Corbicula fluminea is considered one of the most important non-indigenous species (NIS) in aquatic ecosystems. Its presence since 2003 in the upstream area of Mondego estuary (oligohaline and mesohaline sectors) was studied during thirteen months, from December 2007 to December 2008....
Foreword: Contributions of Arctic PRISM to monitoring western hemispheric shorebirds
Susan K. Skagen, Paul A. Smith, Brad A. Andres, Garry Donaldson, Stephen Brown
Jonathan R. Bart, Victoria H. Johnston, editor(s)
2012, Studies in Avian Biology 44
Long-term monitoring of populations is of paramount importance to understanding responses of organisms to global environmental change and to evaluating whether conservation practices are yielding intended results through time (Wiens 2009). The population status of many shorebird species, the focus of this volume, remain poorly known. Long-distance migrant shorebirds have...
Videographic evidence of endangered species depredation by feral cat
Seth Judge, Jill S. Lippert, Kathleen Misajon, Darcy Hu, Steven C. Hess
2012, Pacific Conservation Biology (18) 293-296
Feral cats (Felis cafus) have long been implicated as nest predators of endangered 'Ua'u (Hawaiian Petrel; Pterodroma sandwichensis) on Hawaii Island, but until recently, visual confirmation has been limited by available technology. 'Ua'u nest out of view, deep inside small cavities, on alpine lava flows. During the breeding seasons of...
The effect of size and competition on tree growth rate in old-growth coniferous forests
Adrian Das
2012, Canadian Journal of Forest Research (42) 1983-1995
Tree growth and competition play central roles in forest dynamics. Yet models of competition often neglect important variation in species-specific responses. Furthermore, functions used to model changes in growth rate with size do not always allow for potential complexity. Using a large data set from old-growth forests in California, models...
Emergent wetlands status and trends in the northern Gulf of Mexico: 1950-2010
2012, Conference Paper
Poster presented during the Mississippi-Alabama Sea Grant Consortium Bays and Bayous Symposium 2012 on the decline of emergent wetlands in the northern Gulf of Mexico. Throughout the past century, emergent wetlands have been declining across the Gulf of Mexico. Emergent wetland ecosystems provide many resources, including plant and wildlife habitat,...
Impact assessment of extreme storm events using a Bayesian network
C. den Heijer, Dirk T.J.A. Knipping, Nathaniel G. Plant, Jaap S. M. van Thiel de Vries, Fedor Baart, Pieter H. A. J. M. van Gelder
2012, Conference Paper, Coastal Engineering 2012: Proceedings of the 33rd International Conference on Coastal Engineering
This paper describes an investigation on the usefulness of Bayesian Networks in the safety assessment of dune coasts. A network has been created that predicts the erosion volume based on hydraulic boundary conditions and a number of cross-shore profile indicators. Field measurement data along a large part of the Dutch...
Curiosity's Mars Hand Lens Imager (MAHLI) investigation
Kenneth S. Edgett, R. Aileen Yingst, Michael A. Ravine, Michael A. Caplinger, Justin N. Maki, F. Tony Ghaemi, Jacob A. Schaffner, James F. Bell III, Laurence J. Edwards, Kenneth E. Herkenhoff, Ezat Heydari, Linda C. Kah, Mark T. Lemmon, Michelle E. Minitti, Timothy S. Olson, Timothy J. Parker, Scott K. Rowland, Juergen Schieber, Robert J. Sullivan, Dawn Y. Sumner, Peter C. Thomas, Elsa H. Jensen, John J. Simmonds, Aaron J. Sengstacken, Reg G. Wilson, Walter Goetz
2012, Space Science Reviews (170) 259-317
The Mars Science Laboratory (MSL) Mars Hand Lens Imager (MAHLI) investigation will use a 2-megapixel color camera with a focusable macro lens aboard the rover, Curiosity, to investigate the stratigraphy and grain-scale texture, structure, mineralogy, and morphology of geologic materials in northwestern Gale crater. Of particular interest is the stratigraphic...
Voucher specimens
Robert P. Reynolds, Roy W. McDiarmid
Roy W. McDiarmid, Mercedes S. Foster, Craig Guyer, J. Whitfield Gibbons, Neil Chernoff, editor(s)
2012, Book chapter, Reptile biodiversity: Standard methods for inventory and monitoring
No abstract available....
Mississippi river delta: Chapter G in Emergent wetlands status and trends in the northern Gulf of Mexico: 1950-2010
Lawrence R. Handley, Kathryn A. Spear, Mirka Zapletal, Cindy A. Thatcher, William Jones, Scott Wilson
2012, Report, Emergent wetlands status and trends in the northern Gulf of Mexico: 1950-2010
No abstract available. ...
Response of the North American monsoon to regional changes in ocean surface temperature
John A. Barron, Sarah E. Metcalfe, Jason A. Addison
2012, Paleoceanography (27)
The North American monsoon (NAM), an onshore wind shift occurring between July and September, has evolved in character during the Holocene largely due to changes in Northern Hemisphere insolation. Published paleoproxy and modeling studies suggest that prior to ∼8000 cal years BP, the NAM affected a broader region than today,...
Reoccurrence of 'Ōma'o in leeward woodland habitat and their distribution in alpine habitat on Hawai'i island
Seth W. Judge, Jacqueline M. Gaudioso, P. Marcos Gorresen, Richard J. Camp
2012, Wilson Journal of Ornithology (124) 675-681
The endemic solitaire, 'Oma'o (Myadestes obscurus), is common in windward forests of Hawai'i Island, but has been historically extirpated from leeward forests. The last detections of 'Oma'o on the leeward side of the island were in woodland habitat on the western flank of Mauna Loa in 1978. 'Oma'o were detected...
Tracking lava flow emplacement on the east rift zone of Kilauea, Hawai’i with synthetic aperture radar (SAR) coherence
Hannah R. Dietterich, Michael P. Poland, David Schmidt, Katharine V. Cashman, David R. Sherrod, Arkin Tapia Espinosa
2012, Geochemistry, Geophysics, Geosystems (13)
Lava flow mapping is both an essential component of volcano monitoring and a valuable tool for investigating lava flow behavior. Although maps are traditionally created through field surveys, remote sensing allows an extraordinary view of active lava flows while avoiding the difficulties of mapping on location. Synthetic aperture radar (SAR)...
Selection of the Mars Science Laboratory landing site
M. Golombek, J. Grant, D. Kipp, A. Vasavada, Randolph L. Kirk, Robin L. Fergason, P. Bellutta, F. Calef, K. Larsen, Y. Katayama, A. Huertas, R. Beyer, A. Chen, T. Parker, B. Pollard, S. Lee, R. Hoover, H. Sladek, J. Grotzinger, R. Welch, E. Noe Dobrea, J. Michalski, M. Watkins
2012, Space Science Reviews (170) 641-737
The selection of Gale crater as the Mars Science Laboratory landing site took over five years, involved broad participation of the science community via five open workshops, and narrowed an initial >50 sites (25 by 20 km) to four finalists (Eberswalde, Gale, Holden and Mawrth) based on science and safety....
Peninsular terrane basement ages recorded by Paleozoic and Paleoproterozoic zircon in gabbro xenoliths and andesite from Redoubt volcano, Alaska
Charles R. Bacon, Jorge A. Vazquez, Joseph L. Wooden
2012, Geological Society of America Bulletin (124) 24-34
Historically Sactive Redoubt volcano is an Aleutian arc basalt-to-dacite cone constructed upon the Jurassic–Early Tertiary Alaska–Aleutian Range batholith. The batholith intrudes the Peninsular tectonostratigraphic terrane, which is considered to have developed on oceanic basement and to have accreted to North America, possibly in Late Jurassic time. Xenoliths in Redoubt magmas...
Out of the tropics: the Pacific, Great Basin lakes, and late Pleistocene water cycle in the western United States
Mitchell Lyle, Linda Heusser, Christina Ravelo, Masanobu Yamamoto, John Barron, Noah S. Diffenbaugh, Timothy Herbert, Dyke Andreasen
2012, Science (337) 1629-1633
The water cycle in the western U.S. changed dramatically over glacial cycles. In the last 20,000 years, higher precipitation caused desert lakes to form which have since dried out. Higher glacial precipitation is hypothesized to result from a southward shift of Pacific winter storm tracks. We compared Pacific Ocean data...
