State Changes and Threshold Dynamics

A four-day workshop will use LTER data, including data from the EcoTrends project, to bridge the gap between the relatively mature theoretical understanding of thresholds and state changes in ecological systems and the emerging empirical databases that allow us to actually test models of state changes.

Many of these changes represent “tipping points” or dramatic changes in the states of the systems, and our workshop will use data from terrestrial, coastal, and open-ocean systems to illustrate common mechanisms underlying state changes and threshold dynamics.

Development of a hydrochemical database – StreamchemDB

We are requesting Synthesis Working Group funds to support LTER participation in StreamchemDB.

StreamchemDB is focused on aquatic chemistry data, and builds on former data synthesis projects ClimDB and HydroDB, all of which have been collaborative LTER-Forest Service cross-site synthesis and cyber-infrastructure projects.

Quantifying Uncertainty in Ecosystem Studies

The goal of this synthesis is to evaluate uncertainty in hydrologic inputs, outputs, and net hydrologic flux of major elements across small watersheds with diverse characteristics.

The long-term goal of this project is to contribute to a cultural change in ecology that makes uncertainty analysis an accepted and expected practice in the construction of ecosystem budgets.

Long-term Experiments in the LTER Network: Synthesis and Hypothesis Testing

We are requesting funds to assemble a working group of LTER scientists with extensive experience in conducting long-term experiments in the LTER Network, the skills and interest in synthetically interpreting the results of those experiments, and in using data from these studies to address new questions relevant to pressing global change issues.

Forecasting Rates of Riverine Leaf Litter Decomposition in Response to Inland Climate Change

Recent work has suggested that freshwater ecosystems may play a significant role in the global carbon cycle, potentially emitting 1.2 Pg C y-1 to the atmosphere [1, 2]. The majority of the CO2 that is degassed from streams and rivers comes from the decomposition of allochthonous leaf litter inputs [3, 4]. The process of decomposition fuels aquatic food webs, helps to regulate surface water acidity, and links biogeochemical cycles [5, 6].

From Molecules to Metadata: MIRADA LTERS Follow-up Working Group Meeting

MIRADA-LTERS is an NSF-funded cross-site comparative microbial inventory project that seeks to document, describe and discover baseline and novel diversity in the bacterial, archaeal and eukaryal domains of life across 13 of the aquatic LTER sites.

We request funds to bring 10 data managers/collaborators together to attend a 2 day workshop in Woods Hole sometime during the second week (8th-12th) of March. Five local MBL PIs and data manager Hap Garritt will join the 10 invited guests for an anticipated total of 15 people.

Soil Organic Matter Dynamics: A Cross-Ecosystem Approach

I would like to propose a 2-day meeting in 2010 bringing together scientists from any and all LTER sites interested in comparative soil organic matter analysis.

One day would be devoted entirely to planning cross-site comparative analyses and potential publications, and the other day would be devoted to discussions of the various tools and techniques that could and should be used for the questions posed.