Riverine exports of silicon (Si) directly influence global carbon (C) cycling through the growth of diatoms, ubiquitous autotrophs in marine and freshwater systems, which account for ~25% of global primary production. Rivers play essential roles in processing and supplying the Si necessary for diatom growth, but we have limited knowledge of the controls on river… Read more »
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Ecological Metagenome-derived Reference Genomes and Traits (EMERGENT)
Our climate crisis, resulting from changes in interacting climate variables (temperature, rainfall, atmospheric chemistry) over the last century, has impacted all ecosystems on the surface of the Earth. With modern DNA sequencing techniques it is now possible to simultaneously sample thousands of different species, providing a window into the diverse soil organismal community and their… Read more »
Identifying environmental drivers of plant reproduction across LTER sites
Reproduction is a key component of plant life cycles and is crucial for dispersal, however it has a surprisingly poorly understood relationship to environmental drivers. This is particularly true for plant species with highly variable reproduction over time, known as ‘mast seeding’. While mast-seeding patterns have been linked to weather (temperature, precipitation), describing past patterns… Read more »
Soil Biogeochemistry: Synthesis of Past Data and Development of Protocols for a New Long-Term, Network-Wide Data Stream
Summary We request funds for a working group to synthesize existing data within the LTER network on nitrogen mineralization and nitrification, soil respiration and soil moisture and to develop protocols for a new tightly coordinated, network-wide effort to develop a long-term data stream on these variables. The primary activity would be a workshop to be… Read more »
Identifying Alternative Indicators for the Detection of Abrupt Transitions in Ecosystems: a Consideration of Time Scale and Community Parameters
Background: The potential for abrupt transitions in ecosystem processes may increase as climate change continues to accelerate1,2. While this trend is of great concern, our understanding of how to identify when and why abrupt transitions occur has been informed almost exclusively by theory. In order to enhance the prediction and management of these changes for… Read more »
Training working group: Climate and streamflow seasonal trend analysis at LTER sites
Goals There is almost universal attention to understanding climate trends and variability as a basis for ecological research in the LTER network, and climate records are long enough (>3 decades) at almost all LTER sites to undertake meaningful quantitative analysis for site-level assessment of ecological responses and cross-site comparisons of responses to climate change. Yet… Read more »
2013 LTER Training Workshop Proposal – Remote Data Acquisition
This training workshop will focus on three topics related to the remote acquisition of environmental sensor data typical of LTER sites: 1) photovoltaic power systems, 2) Wi-Fi networking and telemetry systems, and 3) sensor theory and datalogger programming. We will employ a combination of field demonstrations, lectures, hands-on exercises, and discussions to illustrate these concepts…. Read more »
Training Workshop for Site Science Communicators
We aim to increase the capacity of LTER sites to communicate effectively with a variety of stakeholders and to document effective communication practices across the LTER Network. To meet this goal, we ask for funds to support a training workshop for site science communicators that will take place at the LTER Network Office’s training labs… Read more »
Veg-DB Phase 2: Developing a cross-site system to improve development and access to synthetic vegetation databases
This working group will support the next stage of development for a LTER network-based system called Veg-DB that would provide improved access to vegetation data. LTER sites have become significant reservoirs of long-term data on changes in vegetation populations, structure, composition, and productivity. This information is essential to detect long-term trends, test hypotheses, and to… Read more »
Managing sensor networks and data: Best practices for LTER
We are proposing to assemble a working group of LTER information managers and representatives from other groups with experience in sensor networks to develop a best practices guide for LTER on managing sensor networks and data. The working group will examine the various sensor network strategies and applications currently in use within the LTER network… Read more »
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