2009 LTER All Scientists Meeting - Vegetation Ecology

Interactive Effects of Plant Species Diversity and Climate on Seedling Establishment in Grassland

Peter Wragg — Tue, 01 Sep 2009 01:38:45 +0000

Poster Number:

365

Presenter/Primary Author:

Peter Wragg

Co-Authors:

David Tilman

How will anticipated changes in climate interact with grassland plant community composition and diversity to affect the performance of seedlings? We ask this question for two reasons. 1) If plant species are to track spatial shifts in the locations of suitable climatic conditions, plant species must invade communities by means of seedling establishment; more diverse plant communities have been shown to be less invasible, but it is not known how warming will interact with diversity to affect invasion.

Soil Warming and Nitrogen Deposition in a Northeastern Forest

Sydne Record — Fri, 28 Aug 2009 01:44:14 +0000

Poster Number:

290

Presenter/Primary Author:

Sydne Record

Co-Authors:

Serita D. Frey

Co-Authors:

Alexandra R. Contosta

Co-Authors:

Aaron M. Ellison

Ecosystems worldwide are faced with climate change. In the northeastern United States, climate change is coupled with nitrogen deposition from air pollution. The objective of this study is to determine how soil warming and nitrogen deposition influence species richness, diversity, and abundance of vegetation in a northeastern forest. Our study site is the chronic Soil Warming and Nitrogen Fertilization experiment at the Harvard Forest Long Term Ecological Research site.

Student Poster:

Yes

An ongoing field experiment to test if zonation of tidal marsh vegetation is in synchrony with hydrologic conditions developed during rising sea level

John Haywood — Thu, 20 Aug 2009 21:54:36 +0000

Poster Number:

251

Presenter/Primary Author:

John Haywood

Co-Authors:

Linda Blum

Co-Authors:

Mark Brinson

Co-Authors:

Robert Christian

A field experiment has been initiated in August 2008 to determine if the vegetation of a coastal marsh is in synchrony with hydrologic conditions that have developed with rising sea-level. The hypothesis being tested is that plant community structure will persist in existing zones of vegetation in the face of sea-level rise unless disturbance provides opportunities for species change under more frequent tidal inundation.

Student Poster:

Yes

Twenty year record of vegetation change from long-term plots in Alaskan tundra

William Gould — Tue, 04 Aug 2009 16:11:05 +0000

Poster Number:

197

Presenter/Primary Author:

William Gould

Co-Authors:

Joel A. Mercado Díaz

Co-Authors:

Jess K. Zimmerman

Twenty year record of vegetation change from long-term plots in Alaskan tundra
William A. Gould¹, Joel A. Mercado Diaz^1,2, Jess K. Zimmerman²
1. USDA Forest Service, International Institute of Tropical Forestry, Río Piedras PR,
2. University of Puerto Rico, Río Piedras, PR

Cross-Site Working Group on Coupled Human-Natural Systems

Craig Harris — Mon, 13 Jul 2009 15:38:27 +0000

Final Report (Required, .pdf format only) :

Cross-Site Working Group on Coupled Human-Natural Systems Final Report

Organizer:

William Freudenburg

Co-organizer(s):

Craig Harris

This session is intended both for social and biophysical scientists who want to help develop a proposal for the kind of “multi-site, highly collaborative and integrated research initiative” envisioned by the LTER planning group. The focus will be on what the LTER planning process calls the “centerpiece” of the group's conceptual framework, as well as one of “Grand Challenges” to be addressed at the network level – “the dynamics of coupled human-natural ecosystems.”

Preferred Dates:

Sept. 14

Working Group Duration:

Session Info

Session(s):

Working Group Session 5

Room:

Reusch Auditorium Sweet

Official Participants

Additional Participants:

"Craig Harris" <Craig.Harris@SSC.MSU.EDU>, Victor Thompson <thompson.2042@osu.edu>, John Turck <jaturck@#uga.edu>, Hannah Gosnell <gosnellh@geo.oregonstate.edu>, Sharon Hall <sharonjhall@asu.edu>, Abigail York <abigail.york@asu.edu>, Jim Gosz <jgosz@uidaho.edu>, "Wm. R. Freudenburg" <freudenburg@es.ucsb.edu>

Ecosystem Phenology in the Shortgrass Steppe

Lynn Moore — Fri, 19 Jun 2009 00:39:32 +0000

Poster Number:

Presenter/Primary Author:

Lynn Moore

Co-Authors:

William K. Lauenroth

Plant phenology - the seasonal timing of growth, reproduction, and senescence - can be measured from the scale of individuals to biomes. Understanding the timing of plant canopy development and how it is related to climatic variables is an important step in our understanding of how grassland ecosystems are being altered by a changing climate. In this poster we compare 2 years of plant canopy development in a dry year (2002) and an average precipitation year (2005).

Student Poster:

Yes

Applications of LiDAR to Ecological Research

Theresa Valentine — Fri, 05 Jun 2009 20:30:22 +0000

Final Report (Required, .pdf format only) :

LiDAR workshop final report

Organizer:

Thomas Spies

Co-organizer(s):

Theresa Valentine

Co-organizer(s):

John Vande Castle

LiDAR (Light Detection and Ranging) has become an important tool for investigating the structure of the earth's surface and vegetation. It permits high vertical and special resolution characterization of ground and vegetation surface heights and structure across large areas. LiDAR has been used to characterize vegetation cover, biomass, leaf area, and basal area for live and dead vegetation. Software is now readily available for 3-D visualization of canopy surfaces.

Preferred Dates:

Sept. 14

Working Group Duration:

Session Info

Session(s):

Working Group Session 2

Room:

Longs Peak Boulder Field

Working Group Materials

Related materiels:

LiDAR workshop meeting notes

Official Participants

LTER Participants:

Thomas Spies

Theresa Valentine

Hap Garritt

Jamie Hollingsworth

Heather Lumpkin

Michelle Gooch

Ned Fetcher

Libe Washburn

Russell Schmitt

Sheri Shiflett

Jackie Vick

Christine Hladik

Spencer Bissett

Steven Brantley

James Koelliker

Donald Young

Julie Zinnert

Audrey Barker Plotkin

Yi-Fang Hsieh

James Laundre

Darroc Goolsby

Paul Brewer

Loic Pellissier

David Leigh

John Schalles

Linda Kinkel

Tanique Rush

Richard Zimmerman

Michael Duniway

Filipe Alberto

John Hom

Paul Bolstad

Steve Read

James Leichter

Robert Warner

Clark Alexander

Michael Keller

John Vande Castle

William Gould

Chris Martin

Weiqi Zhou

Katherine Kove

Suzanne Sippel

Jeffrey Herrick

Additional Participants:

L. M. Moskal - lmmoskal@u.washington.edu

Andy Colter - rcolter@fs.fed.us

Matt Fraser - matthew.fraser@asu.edu

HongYan Luo - hluo@neoninc.org

Nikolas Stevenson-Moinot - stevenson@evergreen.edu

Jonah Cummings - cumjon04@evergreen.edu

Compensatory dynamics: Their existence and stabilizing effect on ecosystem function are context-dependent

Emily Grman — Mon, 01 Jun 2009 11:56:56 +0000

Poster Number:

Presenter/Primary Author:

Emily Grman

Co-Authors:

Jennifer A Lau

Co-Authors:

Donald R Schoolmaster, Jr

Co-Authors:

Katherine L Gross

Species diversity is expected to promote stability in ecosystem functions such as productivity. One mechanism that may contribute to stability is compensatory dynamics. Compensatory dynamics, which occur when an increase in density (biomass) of one species is associated with a decrease in another, are indicated by negative species covariances. These may be driven by competition or negatively correlated species responses to environmental drivers.

Student Poster:

Yes