2009 LTER All Scientists Meeting - Population Biology

Regional, Historical, and Environmental Variation in A. petiolata occurrence in Western Massachusetts

Kristina Stinson — Fri, 04 Sep 2009 18:50:35 +0000

Poster Number:

386

Presenter/Primary Author:

Kristina Stinson

Co-Authors:

Dunbar Carpenter

Alliaria petiolata (garlic mustard) is an herbaceous biennial herb that has been present in the New England landscape for over a century. We investigated the ecological and historical factors affecting A. petiolata's invasion pattern across the New England landscape, including forest community structure, geophysical attributes, and habitat fragmentation. One-hundred-and-seventy-five 25× 100 m roadside, forested plots across two ecoregions were visited in the summers of 2006 and 2007. A. petiolata presence and cover, dominant canopy species, slope, and soil moisture were recorded.

Meristem density constrains productivity responses to changes in water availability in the Chihuahuan Desert

Lara Reichmann — Tue, 18 Aug 2009 21:34:00 +0000

Poster Number:

229

Presenter/Primary Author:

Lara Reichmann

Co-Authors:

Osvaldo E. Sala

Co-Authors:

Laureano Gherardi

Co-Authors:

Debra P. Peters

In arid ecosystems, current year precipitation explains a low proportion of the annual aboveground net primary production (ANPP). There is evidence that precipitation that occurred in previous years is responsible for the observed difference between actual and expected ANPP, a concept called legacy. Here, we study the mechanisms that generate these legacies, thus we will able to better understand the controls of the global carbon cycle, and to forecast changes in ANPP with a changing climate.

Student Poster:

Yes

Whole-lake changes resulting from intensive trapping of the invasive rusty crayfish (Orconectes rusticus): Can we induce a regime shift?

Gretchen Hansen — Mon, 03 Aug 2009 16:16:03 +0000

Poster Number:

195

Presenter/Primary Author:

Gretchen Hansen

Co-Authors:

M. Jake Vander Zanden

Co-Authors:

Stephen R Carpenter

Rusty crayfish (Orconectes rusticus) are invasive in the upper Midwest United States. They often reach high densities and negatively affect native crayfish species, aquatic macrophytes, benthic invertebrates, and some fish populations. However, in some lakes rusty crayfish do not achieve high densities and do not negatively affect native biota. We conducted a whole-lake experiment designed to remove rusty crayfish from Sparkling Lake, a part of the North Temperate Lakes LTER site in Vilas County, Wisconsin.

Student Poster:

Yes

The Santa Barbara Coastal LTER

Jenifer Dugan — Tue, 14 Jul 2009 00:26:13 +0000

Poster Number:

143

Presenter/Primary Author:

Dan Reed

Co-Authors:

Edward Beighley

Co-Authors:

Craig Carlson

Co-Authors:

Mark Brzezinski

Co-Authors:

Jenifer Dugan

Co-Authors:

Sally Holbrook

Co-Authors:

John Melack

Co-Authors:

Margaret O'Brien

Co-Authors:

H. Mark Page

Co-Authors:

Libe Washburn

Co-Authors:

Alison Whitmer

Co-Authors:

Richard Zimmerman

The primary research focus of the Santa Barbara Coastal (SBC) LTER is on the relative importance of bottom-up processes and allochthonous inputs to giant kelp forests, a highly diverse and productive marine ecosystem that occurs on shallow rocky reefs at the interface of the land-ocean margin. Giant kelp forests are found along the temperate coasts of western North and South America, southern Africa, Australia and most sub Antarctic islands, including Tasmania and New Zealand.

Belowground bud bank production and dynamics of a C3 and a C4 perennial grass

Jackie Ott — Fri, 10 Jul 2009 19:54:22 +0000

Poster Number:

135

Presenter/Primary Author:

Jackie Ott

Co-Authors:

DC Hartnett

Annual regeneration and sustainability of perennial grass populations rely heavily on the belowground population of meristems (the bud bank), yet the dynamics, morphology, and population sizes of grass bud banks have not been explored. Since the two major photosynthetic guilds of grasses vary in their aboveground phenology, their belowground bud bank phenology would likely vary as well.

Student Poster:

Yes

Building an LTER Taxonomic Database to Support Synthetic Research

Christine Laney — Wed, 01 Jul 2009 19:53:14 +0000

Final Report (Required, .pdf format only) :

Final Report

Organizer:

Christine Laney

Co-organizer(s):

Ken Ramsey

We propose that an LTER-wide taxonomic database would minimize much of the work of resolving taxonomic differences for future cross-site, network level research projects. The EcoTrends project has built a database to standardize site codes and nomenclature with USDA PLANTS database symbols* and/or the Integrated Taxonomic Information System (ITIS) taxonomic serial numbers across all participating sites (totaling >1800 plant and animal species at 14 sites). We would like your help to improve, expand, and share it.

Preferred Dates:

Sept. 15

Working Group Duration:

Session Info

Session(s):

Working Group Session 6

Room:

East Side Deer Ridge Fireside

Working Group Materials

Related materiels:

Principles for a names-based cyberinfrastructure to serve all of biology - Patterson, EOL

EML Taxonomic Coverage Module - O'Brien, SBC

Impetus for forming a taxonomic working group - Laney, JRN, EcoTrends

MCR LTER Taxonomy DB - Gastil-Buhl, MCR

GCE LTER Taxonomic Database - Sheldon, GCE

Official Participants

LTER Participants:

Wade Sheldon

M Gastil-Buhl

Margaret O'Brien

Corinna Gries

John Porter

Suzanne Remillard

Kyle Wickings

John Chamblee

Mason Kortz

Donald Henshaw

Additional Participants:

Lee Zeman

David Patterson