2012 LTER ASM - ARC

Effects of increased snow on growth response and allocation patterns of arctic plants

caddis — Sat, 01 Sep 2012 14:56:23 +0000

Poster Number:

368

Presenter/Primary Author:

Claire Addis

Co-Authors:

M. Syndonia Bret-Harte

Warming in the Arctic has led to an increase in shrub cover on the tundra and has been well documented in arctic Alaska.

Student Poster:

Yes

Quantifying the physiology of structurally complex arctic vegetation and implications for ecosystem function in a shrubbier tundra

aformica — Sat, 01 Sep 2012 01:14:38 +0000

Poster Number:

358

Presenter/Primary Author:

Adam Formica

Co-Authors:

Kevin Griffin

Co-Authors:

Natalie Boelman

As conditions become more favorable in some arctic regions for shrub growth, shrubs will not only expand laterally, but they will grow thicker and taller, altering the physical structure of the can

Student Poster:

Yes

The relationships between SOM quality and decomposition across a gradient of increasing shrub abundance in the Alaskan Arctic

jdemarco — Thu, 30 Aug 2012 19:25:01 +0000

Poster Number:

325

Presenter/Primary Author:

Jennie DeMarco

Co-Authors:

Michelle C. Mack

Warming arctic temperatures are shifting dominant vegetation from graminoids to deciduous shrubs whose functional traits can alter the quality of soil organic matter (SOM) via litter inputs and roo

The Chemical Properties of Alaskan Permafrost and Seasonally Thawed Soils

jernakovich — Tue, 28 Aug 2012 21:53:48 +0000

Poster Number:

297

Presenter/Primary Author:

Jessica Ernakovich

Co-Authors:

Wallenstein, Matthew D.

Co-Authors:

Calderón, Francisco J.

Although permafrost soils contain vast stores of carbon, we know relatively little about the chemical composition of the carbon stored in these soils.

Student Poster:

Yes

Aboveground and Belowground Responses to Nutrient Additions and Herbivore Exclusion in Arctic Tundra Ecosystems in Northern Alaska

rsimpson — Fri, 24 Aug 2012 17:38:35 +0000

Poster Number:

265

Presenter/Primary Author:

John Moore

Co-Authors:

Laura Gough

Co-Authors:

Rodney T. Simpson

Co-Authors:

David R. Johnson

The Exploitation Ecosystem Hypothesis (EEH) describes how food chains develop along aboveground net primary productivity (ANPP) gradients.

Expanding observations of mixing in Toolik Lake with the North American Regional Reanalysis

bemery — Thu, 16 Aug 2012 20:56:43 +0000

Poster Number:

230

Presenter/Primary Author:

bemery

Co-Authors:

sally macintyre

Co-Authors:

paul kushner

The ecology of Toolik lake depends ultimately on the the properties which govern nutrients, light and primary production.

Low-level nitrogen and phosphorus addition drives hypolimnetic oxygen drawdown in deep Arctic Lakes

wdaniels — Thu, 16 Aug 2012 17:31:23 +0000

Poster Number:

227

Presenter/Primary Author:

William Daniels

Co-Authors:

Anne Giblin

Increased nutrient transport from the landscape to freshwater ecosystems is likely a secondary effect of global change in the Arctic (Hobbie 1999). Long-term, whole-lake fertilization experim

Student Poster:

Yes

Resource allocation among arctic char in closed arctic lakes:

pbudy — Thu, 09 Aug 2012 18:26:10 +0000

Poster Number:

196

Presenter/Primary Author:

Phaedra Budy

Co-Authors:

Chris Luecke

Co-Authors:

Gary P. Thiede

In closed arctic lakes, we observe a strong cycle in population structure in arctic char (Salvelinus alpinus) while population abundance remains generally stable. We hypothesized this cycle w

How do arctic shrub canopies respond to changes in the diffuse light fraction of solar radiation?

lvanderpol — Thu, 09 Aug 2012 07:41:06 +0000

Poster Number:

192

Presenter/Primary Author:

Laura Van Der Pol

Co-Authors:

Louise Beveridge

Co-Authors:

Zak Gratton

Co-Authors:

Fiona Jevon

Co-Authors:

Ed Rastetter

Co-Authors:

Gaius Shaver

Co-Authors:

Mat Williams

The aim of this study is to understand how tall (>50cm) arctic shrub canopies, such as those dominated by the shrub species Betula nana and Salix pulchra, function under differ

Student Poster:

Yes

Effects of increasing shrubs in arctic tundra on associated arthropods and migratory songbirds

lgough — Fri, 20 Jul 2012 15:06:09 +0000

Poster Number:

Presenter/Primary Author:

Laura Gough

Co-Authors:

Natalie Boelman

Co-Authors:

John Wingfield

Co-Authors:

Jesse Krause

Co-Authors:

Shannan Sweet

Co-Authors:

Matthew Rich

Co-Authors:

Ashley Asmus

Co-Authors:

Team Bird 2010-2012

In areas across the Arctic, shrubs are becoming more abundant, altering habitat for consumer species.