2012 LTER ASM - Pattern and control of organic matter accumulation in surface layers and sediments

Microstegium vimineum is associated with changes in nitrogen availability and fluxes across a broad landscape

tursell — Fri, 07 Sep 2012 03:12:31 +0000

Poster Number:

397

Presenter/Primary Author:

Tara Ursell

Co-Authors:

Robert J. Warren II, Ashley D. Keiser, Jeffrey Norman, John Barrett, Mark A. Bradford

Student Poster:

Yes

Photochemical Degradation of Strong Natural Iron-Binding Ligands in the California Current Ecosystem

rbundy — Wed, 05 Sep 2012 07:45:57 +0000

Poster Number:

388

Presenter/Primary Author:

Randelle Bundy

Co-Authors:

Kathy Barbeau

The speciation of iron has been shown to be significantly affected by photochemical processes in the surface ocean, altering both the redox state and organic complexation of iron.

Student Poster:

Yes

The California Current Ecosystem (CCE) LTER site: Mechanisms underlying ecosystem transitions

mohman — Sat, 01 Sep 2012 23:47:52 +0000

Poster Number:

375

Presenter/Primary Author:

Mark Ohman

Co-Authors:

25 co-authors

The CCE-LTER site is a coastal upwelling biome forced by physical processes on a variety of time and space scales.

Iron redox cycling: unexplored mechanisms for soil organic matter decomposition

wsilver — Fri, 31 Aug 2012 18:38:30 +0000

Poster Number:

341

Presenter/Primary Author:

Whendee Silver

Co-Authors:

Steven Hall

Iron (Fe) oxide minerals have long been known to protect soil organic carbon (C) from microbial decomposition, especially in humid tropical soils abundant in both Fe and C.

Life in Brown Waters: Aquatic Bacteria Respond to Increased Terrestrial Carbon Loading

mmuscarella — Fri, 31 Aug 2012 16:59:37 +0000

Poster Number:

336

Presenter/Primary Author:

Mario Muscarella

Co-Authors:

Stuart Jones

Co-Authors:

Jay Lennon

Bacteria are vital for the functioning of natural and managed ecosystems due to their role in biogeochemical processes; however, it is unclear how bacteria will respond to environmental changes.

Student Poster:

Yes

Microbial functional response to altered precipitation timing and duration – implications for the soil carbon cycle

lzeglin — Fri, 31 Aug 2012 02:38:04 +0000

Poster Number:

331

Presenter/Primary Author:

Lydia Zeglin

Co-Authors:

Peter Bottomley

Co-Authors:

Ari Jumpponen

Co-Authors:

Chuck Rice

Co-Authors:

Miguel Arango

Co-Authors:

Adam Lindsley

Co-Authors:

Andrew McGowan

Co-Authors:

David Myrold

A significant amount of carbon (C) is processed and stored in prairie soils: grasslands cover 6.1-7.4% of the earth’s land surface and hold 7.3-11.4% of global soil C.

Mechanisms of soil C storage in bioenergy cropping systems

ltiemann — Thu, 30 Aug 2012 02:24:56 +0000

Poster Number:

318

Presenter/Primary Author:

Lisa Tiemann

Co-Authors:

Stuart Grandy

Soils often accrue carbon (C) when land is converted from grain based row crops such as corn to perennial bioenergy crops.

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

The roles of crabs in forming tidal creeks in sinking salt marshes

hvu — Wed, 29 Aug 2012 16:35:26 +0000

Poster Number:

311

Presenter/Primary Author:

Huy Vu

Co-Authors:

Steven C. Pennings

Salt marshes provide many ecosystem services, but are threatened by sea-level rise (SLR).

Student Poster:

Yes

The Konza Prairie LTER Program: Grassland Dynamics and Long-Term Trajectories of Change

jblair — Wed, 29 Aug 2012 15:35:36 +0000

Poster Number:

308

Presenter/Primary Author:

John Blair

Co-Authors:

Sara Baer, John Briggs, Walter Dodds, Keith Gido, John Harrington, David Hartnett, Anthony Joern, Don Kaufman, Alan Knapp, Jesse Nippert, Brett Sandercock, Melinda Smith

The Konza Prairie LTER program (KNZ) is a comprehensive ecological research, education and outreach program, centered on one of the most productive grasslands in North America – the tallgrass prair