2009 LTER All Scientists Meeting - Climatology

Modeling Hydrochemical Responses to Climate Change at the Hubbard Brook Experimental Forest over the 21st Century Using a Dynamic Biogeochemical Model (PnET-BGC)

Afshin Pourmokhtarian — Mon, 31 Aug 2009 23:46:24 +0000

Poster Number:

360

Presenter/Primary Author:

Afshin Pourmokhtarian

Co-Authors:

Charles T. Driscoll

Co-Authors:

John L. Campbell

Dynamic biogeochemical watershed models are the only practical approach that can predict concurrent exposure to multiple environmental factors and consider interactive effects between climate change, atmospheric deposition and CO2 fertilization effect. Therefore, they could be powerful tools to help to understand the long-term effects of climate change on ecosystems.

Student Poster:

Yes

Central Arizona-Phoenix Long-Term Ecological Research

Marcia Nation — Mon, 31 Aug 2009 21:54:26 +0000

Poster Number:

357

Presenter/Primary Author:

Nancy Grimm

Co-Authors:

Charles Redman

The Central Arizona–Phoenix Long-term Ecological Research (CAP LTER) project is based in the central Arizona and metropolitan Phoenix region, embedded in the Sonoran Desert. As the fifth-largest and, until recently, the fastest-growing city in the US, Phoenix is an excellent location for urban ecological research. Phoenix was established after the Civil War, initially one of several small towns surrounded by irrigated farmland. Continued agrarian expansion predated the explosive growth of housing in the second half of the 20th century.

Climate change and soil temperature response across a montane to alpine gradient, Niwot Ridge LTER

Kurt Chowanski — Thu, 27 Aug 2009 16:12:38 +0000

Poster Number:

282

Presenter/Primary Author:

Kurt Chowanski

Co-Authors:

Timothy Kittel

Co-Authors:

Isabel W Ashton

Co-Authors:

Mark Williams

Soil temperature is one of the key determinants of carbon flux, nutrient availability, decomposition rates, and primary productivity in high-elevation and high-latitude ecosystems. Global climate models predict that as air temperatures rise there will be a corresponding increase in soil temperature and a longer snow-free season.

The NEON Fundamental Instrument Unit: Challenges for Consistent, Long-term Measurements

Henry Loescher — Tue, 18 Aug 2009 23:11:06 +0000

Poster Number:

235

Presenter/Primary Author:

Henry Loescher

Co-Authors:

Hongyan Luo

Co-Authors:

Ted Hehn

Co-Authors:

Heather Powell

Co-Authors:

Tom Cilke

The National Ecological Observatory Network (NEON) is a national-scale research platform for assessing the impacts of climate change, land-use change, and invasive species on ecosystem structure and function.

Climate-induced changes in streamflow at the Hubbard Brook Experimental Forest

John Campbell — Tue, 18 Aug 2009 19:20:48 +0000

Poster Number:

225

Presenter/Primary Author:

John Campbell

Co-Authors:

Charles T. Driscoll

Co-Authors:

Afshin Pourmokhtarian

Long-term data from the Hubbard Brook Experimental Forest show that air temperature has increased by 1-1.5 °C over the last half century. While more variable, annual precipitation has also increased by 19-26% during the same period. These changes in climate influence streamflow, which provides an integrated climate signal that incorporates physical (snowpack, evaporation) and biological (evapotranspiration) responses. Unlike the western United States, water is generally abundant in the Northeast.

The Fastest Changing Sea Ice Habitats

Sharon Stammerjohn — Thu, 13 Aug 2009 20:18:34 +0000

Poster Number:

210

Presenter/Primary Author:

Sharon Stammerjohn

Co-Authors:

Hugh Ducklow

Co-Authors:

Doug Martinson

Co-Authors:

Rob Masssom

Co-Authors:

David Rind

Sea ice changes in the greater PAL LTER study region are occurring 29% faster than the fastest sea ice changes in the Arctic. Over 1979-2006, the sea ice season has become 83 days shorter in the greater PAL LTER area versus 59 days shorter in the greater Chukchi Sea area in the Arctic (though the latter includes twice the area effected). We review the physical processes and potential feedbacks contributing to these polar sea ice changes to better reveal high latitude climate sensitivity and its implications for polar marine ecosystems.

Wind: A major integrator of landscapes in the McMurdo Dry Valleys (MCM) ecosystem

Andrew Fountain — Mon, 27 Jul 2009 17:27:56 +0000

Poster Number:

186

Presenter/Primary Author:

Andrew Fountain

Co-Authors:

Peter Doran

Co-Authors:

Michael Gooseff

Co-Authors:

W. Berry Lyons

Co-Authors:

Diane McKnight

Co-Authors:

John Priscu

Co-Authors:

Ross Virginia

Co-Authors:

Diana Wall

The McMurdo Dry Valleys have no rainfall and most snowfall sublimates before wetting the soils significantly. Glacial melt streams are also seasonal, flowing for only 4 to 6 weeks per year. Consequently, hydrology does not provide significant connections among ecosystem components. Conversely, wind is a persistent daily feature of the McMurdo Dry Valleys environment throughout the year. In summer, cool air from the ice-covered oceans flows into the relatively warm valleys creating a strong thermal gradient in the valleys.

Net Ecosystem Exchange of carbon and water vapor among contrasting land-uses types in the semiarid short-grass steppe in Central Mexico

Henry Loescher — Mon, 27 Jul 2009 17:04:57 +0000

Poster Number:

185

Presenter/Primary Author:

Henry Loescher

Co-Authors:

Josue Delgado

Co-Authors:

Tulio Arredondo

Co-Authors:

Elisabeth Huber-Sannwald

Co-Authors:

Miguel Luna

Land use change is one of the most important factors contributing to CO₂ emissions to the atmosphere, but also to the loss of biodiversity and alteration of hydrologic cycle in different biomes. In Central-Northern Mexico, the shortgrass steppe is highly threatened by different types of land use change including, overgrazing, agricultural development, and shrub encroachment. Recent assessments along the shortgrass steppe reported between 15 to 110 MT C ha^-1 y^-1, which summing the large extent of semiarid grasslands (~ 100,000 Km²).

EcoTrends: past, present, and future - an opportunity to promote synthetic analyses

Christine Laney — Wed, 01 Jul 2009 18:33:58 +0000

Final Report (Required, .pdf format only) :

Final Report

Organizer:

Christine Laney

Join us for an update on the progress of the EcoTrends project, an introduction to the functionality of the new EcoTrends website (http://www.ecotrends.info), lessons learned during the project, and a description of plans for the future. We will also use this time to solicit and discuss ideas on how to better incorporate and display data via database design, web services and tools (e.g., mapping, analysis tools, modeling tools, and customizable features) that will further engage and support the research and information management community.

Preferred Dates:

Sept. 14

Working Group Duration:

Session Info

Session(s):

Working Group Session 1

Room:

Reusch Auditorium Hobbs

Working Group Materials

Related materiels:

EcoTrends: past, present & future - an opportunity to promote synthetic analyses. Laney, JRN, EcoTrends

Official Participants

LTER Participants:

Corinna Gries

Nicole Kaplan

Duane Costa

James Brunt

Cecilia Tomasel

Christopher Bloch

Terri Koontz

Paul Stapp

Jin Yao

Mark Ohman

Donald Henshaw

Mason Kortz

Florence Millerand

Adrian Burd

David Balsiger

Additional Participants:

Derik Barseghian - barseghian@nceas.ucsb.edu

Judy Cushing - judyc@evergreen.edu

Lee Zeman - zemanl@evergreen.edu

Ben Leinfield - leinfelder@nceas.ucsb.edu

Socio-Ecological Consequences of Continental-Scale Climate Change

John Blair — Thu, 18 Jun 2009 20:21:32 +0000

Final Report (Required, .pdf format only) :

ASM Report Blair_Knapp.pdf.pdf

Organizer:

John Blair

Co-organizer(s):

Alan Knapp

The goal of this working group is to continue discussions initiated at the 2009 Science Council meeting that were focused on designing a continental-scale research program to assess how the major socio-ecological systems of the U.S.

Preferred Dates:

Sept. 14

Preferred Dates:

Sept. 16

Working Group Duration:

Session Info

Session(s):

Working Group Session 1

Session(s):

Working Group Session 2

Room:

Wind River C

Official Participants

LTER Participants:

John Blair

Alan Knapp

Osvaldo Sala

Steve Raciti

William Freudenburg

Glenn Juday

David Valentine

John Yarie

Todd Robinson

Debra Peters

Patrick Martin

Sharon Hall

David Tilman

Craig Harris

Kinga Krauze

Shannon Pelini

Melinda Smith

Additional Participants:

Lisa Crone lkcrone@fs.fed.us

Russell Dennis RUSS.E.DENNIS@gmail.com

Mark Schulze MARK.SCHULZE@OREGONSTATE.EDU

Manuel Maass maass@oikos.unam.mx

Dave Coleman davec@ugs.edu

Angela Laws alaws@ksu.edu