2012 LTER ASM - Cryosphere

Exploring C substrate and soil moisture effects on bacterial diversity through 13C- and 18O-DNA stable isotope probing in polar deserts

ssaurey — Fri, 31 Aug 2012 22:59:08 +0000

Poster Number:

354

Presenter/Primary Author:

Sabrina Saurey

Co-Authors:

Byron J. Adams

Co-Authors:

Christina D. Takacs-Vesbach

Co-Authors:

John E. Barrett

Co-Authors:

Diana H. Wall

Co-Authors:

Ross A. Virginia

Co-Authors:

Zachary T. Aanderud

Background/Question/Methods

Student Poster:

Yes

Spatial and temporal variability in soil CO2 fluxes during the snow covered season on Niwot Ridge

dliptzin — Thu, 30 Aug 2012 00:03:19 +0000

Poster Number:

316

Presenter/Primary Author:

Daniel Liptzin

Co-Authors:

Brian Seok

Co-Authors:

Detlev Helmig

Co-Authors:

Mark W. Williams

Until recently, microbial activity in seasonally snow covered ecosystems was thought to be limited during the snow-covered season. However, in the last decade many studies have shown that the

Seasonal changes in open water area in the vicinity of penguin colonies near Palmer Station, northwestern Antarctic Peninsula

sstammerjohn — Fri, 24 Aug 2012 17:59:32 +0000

Poster Number:

266

Presenter/Primary Author:

Sharon Stammerjohn

Co-Authors:

Bill Fraser

Co-Authors:

Oscar Schofield

Co-Authors:

Doug Martinson

Co-Authors:

Hugh Ducklow

The sea ice season in the western Antarctic Peninsula (WAP) region shows some of the fastest rates of change observed globally since 1979. The Palmer Long-Term Ecological Research (PAL LTER)

Projecting Lake-Level Rise from Airborne LiDAR and Climate Models in Taylor Valley, Antarctica

mobryk — Mon, 13 Aug 2012 19:09:33 +0000

Poster Number:

202

Presenter/Primary Author:

Maciek Obryk

Co-Authors:

Spencer Niebuhr

Co-Authors:

Brad Herried

Co-Authors:

Peter Doran

The McMurdo Dry Valleys (approximately 77°45ˈS, 162°E) is the largest ice-free valley system in Antarctica with a cold, hyper-arid climate and mean valley bottom temperatures ranging from -14.8

Student Poster:

Yes

Unraveling the impact of climate on groundwater storage, hydrochemistry, and residence time in the high-elevation catchments of the Niwot Ridge LTER site, Colorado

mzeliff — Wed, 08 Aug 2012 19:05:55 +0000

Poster Number:

188

Presenter/Primary Author:

Morgan Zeliff

Co-Authors:

Mark W. Williams

Groundwater storage, hydrochemistry and residence time are all known to vary widely depending on hydrogeologic conditions.

Student Poster:

Yes

The role of dust on snow and other aeolian inputs in biogeochemical cycling in barren, alpine catchments

mladenov — Tue, 07 Aug 2012 19:28:37 +0000

Poster Number:

185

Presenter/Primary Author:

Natalie Mladenov

Co-Authors:

Mark W. Williams

Co-Authors:

Steve K. Schmidt

Co-Authors:

Alex Blum

Many alpine areas are experiencing deglaciation and biogeochemical changes driven by temperature rise and changes in atmospheric deposition.

Hydrochemical response of alpine watersheds to snowmelt.

dperrot — Mon, 06 Aug 2012 05:23:11 +0000

Poster Number:

176

Presenter/Primary Author:

Danielle Perrot

Co-Authors:

Noah P. Molotch

Co-Authors:

Mark W. Williams

Co-Authors:

Steven M. Jepsen

Co-Authors:

James O. Sickman

This study explores the stream hydrochemical response to snowmelt in alpine environments in the context of variable source area (VSA) dynamics and nitrate.

Student Poster:

Yes

Climate Change, Permafrost Melt, and Increased Nitrate Export, Green Lakes Valley, Colorado

mwilliams — Fri, 03 Aug 2012 23:23:04 +0000

Poster Number:

171

Presenter/Primary Author:

Mark Williams

Co-Authors:

Rebecca T. Barnes

Co-Authors:

Katya Hafich

Co-Authors:

Jordan Parman

Alpine ecosystems are particularly susceptible to disturbance due to their short growing seasons, sparse vegetation, thin soils, and a harsh climate.

Ecosystem Processes and Human Influences Regulate Streamflow Response to Climate Change at Long-Term Ecological Research Sites

jjones — Fri, 03 Aug 2012 00:05:08 +0000

Poster Number:

162

Presenter/Primary Author:

Julia Jones

Co-Authors:

Irena Creed

Co-Authors:

Kendra Hatcher

Co-Authors:

Robert J. Warrem

Co-Authors:

Mary Beth Adams

Co-Authors:

Melinda H. Benson

Co-Authors:

Emery Boose

Co-Authors:

Warren Brown

Co-Authors:

John L. Campbell

Co-Authors:

Alan Covich

Co-Authors:

David W. CLow

Co-Authors:

Clifford N. Dahm

Co-Authors:

Kelly Elder

Co-Authors:

Chelcy R. Ford

Co-Authors:

Nancy B. Grimm

Co-Authors:

Donald L. Henshaw

Co-Authors:

Kelli L. Larson

Co-Authors:

Evan S. Miles

Co-Authors:

Kathleen M. Miles

Co-Authors:

Stephen Sebestyen

Co-Authors:

Adam T. Spargo

Co-Authors:

Asa Stone

Co-Authors:

James M. Vose

Co-Authors:

Mark W. Williams

Analyses of long-term records at headwater research sites in the US and Canada indicate that
climate change effects on hydrology are not as clear as might be expected from trends in

Unique traits of an ultra low-diversity bacterial and fungal high-elevation (> 6000 m) cold desert mineral soil community

rlynch2 — Thu, 02 Aug 2012 19:50:44 +0000

Poster Number:

159

Presenter/Primary Author:

Ryan Lynch

Co-Authors:

Steve K Schmidt

Co-Authors:

Diana R Nemergut

Co-Authors:

Jack L Darcy

High-elevation, plant and glacier free soils rank among the most physiochemically extreme and oligotrophic terrestrial environments. The mountain topogr

Student Poster:

Yes