1,495 Works

Soil water samples analyzed for dissolved iron (Fe) and other chemical compounds from several drained thaw lake basins near Barrow, Alaska, 2010

D. Lipson
Soil water was collected from several drained thaw lake basins near Barrow, Alaska (AK) in 2010. Samples were collected from 0-10 centimeter (cm) depth using Rhizon soil moisture samplers and analyzed for dissolved iron (Fe), organic carbon, siderophores, carbon dioxide and methane (Lipson et al. (2013) Global Biogeochemical Cycles 27:1-11, doi:10.1002/gbc.20038).

X-ray fluorescence spectroscopy data on soil samples from Barrow, Alaska, 2013

T.K. Raab
Data is from Barrow soils, sampled at discrete depth-intervals, and subjected to energy-dispersive X-ray fluorescence spectroscopy, using an XEPOS spectrometer. Samples were fine, flour-consistency powders, suspended over a thin membrane of Prolene X-ray film. Data represents means of 4 determinations per sample, with X-ray tube voltage ~ 39 Kilovolts potential.

Dissolved carbon dioxide and methane in soil pore water collected from various drained thaw lake basins near Barrow, Alaska, 2011

D. Lipson & K. Miller
Soil pore water collected from various drained thaw lake basins near Barrow, Alaska (AK) was analyzed for dissolved carbon dioxide and methane. Soil water samples (0-10 centimeter (cm) depth) were collected using Rhizon soil moisture samplers and dissolved gases were measured by gas chromatography (GC) analysis of the headspace.

Electrical current measurements from poised electrodes of microbial three-electrode systems from drained thaw lake basins near Barrow, Alaska, 2011-2012

E. Friedman & L. Angenent
2011: Electrical current measurements from poised electrodes of microbial three-electrode systems from a young, medium, old, and ancient aged drained-thaw lake basins. At each basin there are duplicate measurements at shallow (7 centimeter (cm)), medium (10 cm), and deep (14 cm) depths below the soil surface. All current values are in micro-amperes. 2012: Electrical current measurements from poised electrodes of microbial three-electrode systems from three ice-wedge polygons within a medium aged drained-thaw lake basin. Within...

Reduction of iron and humic substances as a dominant respiratory process in Arctic peat soils, 2008-2012

David Lipson
Investigators from San Diego State University, Washington University, and Stanford University will collaborate to study the role of iron and humic substances as electron acceptors in anaerobic respiration in peat soils of drained thaw lake basins in the Arctic. The role of microbial physiology in carbon flux from Arctic soils has substantial implications of climate change, and the PIs will apply novel methods that promise new insights. The study will further our understanding of controls...

Cation exchange capacity for soils of drained thaw lake basins near Barrow, Alaska, 2010

T.K. Raab & D.A. Lipson
Cation exchange capacity (CEC) and porosity-weighted CEC (Qv) for soils of drained thaw lake basins near Barrow, Alaska (AK) representing young, medium, old and ancient age classes. See Lipson et al. (2013) GBC 27:1-11.

Methane and carbon fluxes measured at various locations within the drained thaw lake basin near Barrow, Alaska, 2012

K. Miller, E. Friedman, L. Angenent & D.A. Lipson
In 2012, gas fluxes were measured at various locations within the drained thaw lake basin previously used for the Biocomplexity Experiment (BE), near Barrow, Alaska (AK). In two separate experiments collars were arranged in three ice wedge polygons within the central region of the BE, referred to as A, B and C. Carbon dioxide-CO2 and methane-CH4 fluxes were measured using a Los Gatos Research portable trace gas analyzer.

Soil electrochemistry data from various drained thaw lake basins near Barrow, Alaska, 2009-2011

D. Lipson
These data were collected from various drained thaw lake basins near Barrow, Alaska (AK) from 2009-2011, and include pH, oxidation-reduction potential (ORP), electrical conductivity (EC) and dissolved oxygen (DO). At some points thaw depth and water table depth were also measured. The 2009 data set is from the Biocomplexity experiment (Lipson et al. 2012. Biogeosciences 9:1-15); the north section was experimentally flooded, the south and central were not. The 2010 data was from four basins...

Barrow, Alaska Concentrations, Thaw Depth, Temperature, and Water Content 2005 - 2007 Biocomplexity Experiment South/Biocomplexity Experiment Central (BES/BEC) Towers and Soil Probes

Eric Wilkman
The rates, processes, and controls on Arctic cold period soil carbon loss are still poorly understood. To understand one component of winter carbon dioxide (CO2) loss to the atmosphere, continuous measurements of soil CO2 concentration, [CO2], were made and compared to ecosystem scale CO2 fluxes. Measurements of soil [CO2] were made near Utqiaġvik, Alaska from the beginning of soil thaw in summer 2005 until spring 2007. In the summer, soil [CO2] rose with increased soil...

Surface Mass Balance and Snow Depth on Sea Ice Working Group (SUMup) snow density subdataset, Greenland and Antartica, 1950-2018

Megan Thompson-Munson, Jan Lenaerts, Lora Koenig & Lynn Montgomery
This dataset includes snow density measurements from both hemispheres. This dataset is a community effort to distribute easy to use in-situ data to improve surface mass balance modeling and remote sensing efforts. This dataset is a compilation of work from many individual researchers. When using this dataset please cite both the individual researchers who provided the data as listed in the Citation field as well as this dataset. This dataset includes snow density measurements over...

Non-Abelian Bloch Oscillations in Higher-Order Topological Insulators

Marco Di Liberto

Realizing a one-dimensional topological gauge theory in an optically dressed Bose-Einstein condensate

Leticia Tarruell

Discussion 1: Wetting of deformable sheets

Doug Holmes, Reinhard Lipowsky & Joseph Paulsen

The factorization puzzle in supergravity

Meet & Greet session

Wild Pig Management at the Jack and Laura Dangermond Preserve

Shuhan Song, Peter Omasta, Benson Truong & AJ Zekanoski
This dataset was created for the Wild Pig Management at the Jack and Laura Dangermond Preserve, a group project by Bren School of Environmental Science and Management at the University of California, Santa Barbara. The project includes a population study of wild pigs (Sus scrofa) and a cost analysis of three management scenarios. For the wild pig population study, this dataset contains pig count data created by tagging camera trap photos between October 2013 to...

Beaver Pond Locations in Arctic Alaska, 1949 to 2020.

Ken Tape, Jason Clark & Benjamin Jones
Beavers were not previously recognized as an Arctic species, and their engineering in the tundra is considered negligible. Recent findings suggest that beavers have moved into arctic tundra regions and are controlling surface water dynamics, which strongly influence permafrost and landscape stability. These data show beaver pond locations in the Alaska Arctic identified in aerial photography and satellite imagery. Black and white aerial photography is from 1949-55, color infrared aerial photography (AHAP) is from 1976-84,...

Interactions between strains govern the eco-evolutionary dynamics of microbial communities

Cellular division of labor in a marine bacterium

Julia Schwartzman

The rates of global bacterial and archaeal dispersal

Stilianos Louca

Alternative stable states, regime shifts, and priority effects in microbial communities

Sergei Maslov

Bacterial evolution and adaptation within human microbiomes at high resolution

Tami Lieberman

Building microbial communities to understand and design dynamics and functions

Ophelia Venturelli

Gravity: the force from the ultraviolet

Simon Caron-Huot

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