American Geophysical Union 2014 Fall Meeting: Deadlines and Sessions of Interest

The 2014 Fall Meeting for the American Geophysical Union will be held December 15-19, 2014 in San Francisco, California.

Abstract submission is currently open, and will close on August 6th.

A limited number of travel grants are also available. The deadline to apply for these is August 13th.

Sessions that may be of interest to Novus participants are listed below.

Dynamics of Global Forests under a Changing Climate
Forests are an influential component of the global carbon cycle and play an important role in Earth’s climate system. Climate change is altering forest dynamics, driving biogeochemical and biophysical feedbacks to the climate system. This session will focus on impacts of climate change on forests globally and consequent climate feedbacks. In particular, it will address both the mechanisms through which altered atmospheric CO2 and climate are likely to impact forest dynamics, including physiological responses, community dynamics, and biogeochemical cycling and the implications of forest-climate feedbacks that could buffer or accelerate change.

Disturbances and Extreme Climate Events: Impacts and Feedbacks
Disturbances (e.g., fire, hurricane, insect outbreaks, ice storms) and extreme climate events (e.g., drought, heat waves) substantially affect ecosystem function and processes, including carbon cycling. These events can also have significant feedbacks to the regional climate. We invite submissions that investigate and quantify the impacts of disturbances and extreme climate events on terrestrial ecosystems and their feedbacks to the climate over various spatial and temporal scales using observations (e.g., eddy covariance flux measurements, and national inventories), remote sensing, state-of-the-art modeling approaches (e.g., ecosystem models, land surface models, and region climate/earth system models, upscaling), and model-data fusion techniques.

Ecological Disturbance: Observing and Predicting Disturbance Impacts
Ecological disturbances are a fundamental driver of terrestrial carbon, water, and nutrient dynamics. Disturbances such as drought, rising temperatures, and historical land use have instigated widespread forest die-off, insect infestations, and catastrophic wildfire. Due to the potential for future disturbances that are more frequent or widespread, we urgently need observational, experimental, and modeling studies aimed at understanding future impacts of disturbances on ecosystems. This session focuses on studies that address the effects of ecological disturbance on carbon, water, and nutrient dynamics, as well as methods for understanding non-equilibrium conditions.

Forests and Drought: Vulnerability and Resilience, Past, Present and Future
Forests are critical drivers of energy, carbon, water, and nutrient dynamics on a global scale. Large-scale changes to forests will have cascading effects on global biogeochemistry and climate. Future climate scenarios predict that many forests will experience a reduction in precipitation coupled with rising temperatures. Forests may be resilient to short-term drought, although with sufficiently long exposure to drought conditions, forests reach a tipping point that leads to tree mortality and the potential for conversion to other vegetation types. The capacity of forests to survive droughts requires further understanding. We are interested in where forest vegetation may have passed or be approaching a tipping point. This session calls for contributions on past, present and future effects of drought on forests ecosystems. We seek to represent research using paleo-ecological studies, in-situ observations, experimental manipulations, and remotely sensed observations. We also invite model studies of the drought effects on forests.

Ideas in Terrestrial Biochemistry: Tell the Story, Ditch the PowerPoint
We invite contributors to talk about their research outcomes and focus on new insights and understandings their findings have provided. This session is intended for a wide range of topics in biogeosciences, including but not limited to, plant-water interactions, greenhouse-gas feedbacks with climate change, ecosystem structure, and soil processes. Guidelines for contributors are that the visuals for their presentation will be limited to three slides or less. Instead, we encourage presenters to focus on verbally communicating with the audience and building in time for discussion, to increase attention and involvement. For posters, graphical presentation should be limited to not more than three figures, preferably conceptual figures such as drawings or photos. We invite contributors that aim to uncover mechanisms when they explicitly consider those facets of the environment that are important to a particular hypothesis.

Identifying Certainties and Uncertainties in Future Forest Carbon Under a Changing Climate
Forests are an important component of the global carbon cycle because of their role as a terrestrial carbon sink and their potential for long term carbon storage.  Globally forests are in a rapid period of change due to interactions of modified disturbance regimes, climate change, and past and current forest management practices.  In some cases the state of current research gives us a clear indication of the effects of forest management on long-term carbon balance, but in other cases uncertainties of future forest conditions, or future disturbances such as wildfire, are too great to recommend action at this time.  Here we are calling for presentations of original research and syntheses or review analyses that evaluate the long-term implications of forest management on the carbon cycle.  We particularly welcome studies that incorporate formal uncertainty analysis and those that address how carbon management may interface with other forest management goals.

N2O Emissions as a Component of Carbon and Nitrogen Cycles: Processes, Measurement, and Modeling
Nitrous oxide (N2O) is a powerful greenhouse gas but its global emissions from natural ecosystems, agroecosystems, and urban ecosystems are uncertain. N2O is a product of both nitrification and denitrification processes in soil. There is an emergent need to advance our ability to measure and model N2O fluxes and the underlying mechanism that is critically important in the carbon and nitrogen cycles. This session aims to bring together ecologists, biogeochemists and biometeorologists who use recently developed technologies to measure and model N2O fluxes and the linkage with CO2 and CH4 fluxes from various ecosystems based on eddy-covariance and chamber-based methods and simulation models.

Observations and Model Requirements for Understanding Drivers of Disturbance Processes in Arctic and Boreal Terrestrial Ecosystems
Ecosystem processes in the Arctic and Boreal regions are not adequately represented in the present-generation Earth System Models. Increasing disturbance processes across the press (e.g. permafrost thaw) to pulse (e.g. fire, insects, and thermokarst) spectrum are causing widespread changes to structures and functions of Arctic and Boreal ecosystems. Disturbance impacts are of concern as climate change and land use in the region increasingly become important factors drivers of disturbance. Organizing existing and new data collections will facilitate incorporating these processes and their feedbacks in model applications and for understanding disturbance for land management. Our session invites contributions involving observational, experimental, remote sensing and modeling studies characterizing these disturbance processes and their impacts on the key components of Arctic-Boreal system.

Pyrogenic Carbon Dynamics of Boreal Wildfires
Boreal wildfires have been shown to have a large influence on global pyrogenic carbon (e.g., “black carbon”) and dissolved and particulate organic matter emissions, which exert a large influence on Arctic radiative forcing and can be a significant component of dissolved carbon export in runoff. However, little information is available regarding environmental drivers or fire behavior responsible for these exports or their climate forcing consequences. We invite submissions examining the generation, emission, and fate of C combustion products (e.g., black carbon, dissolved and particulate organic matter, CO and CO2, etc.) during boreal wildfires, particularly those in poorly-drained forest and peatland ecosystems. Studies ranging from investigations of first-order combustion of organic soils and field studies to modeling of atmospheric forcing by pyrogenic emissions are encouraged.

Remote Sensing of Forest Disturbance: Pushing the Frontier
The demand for timely detection and detailed description of forest disturbances has significantly increased over the past several years.  Practical needs have arisen in accounting systems used to measure, report, and verify forest management strategies.  Requirements for disturbance information have also been motivated by the scientific community, as appreciation of the role of disturbance in biogeochemical cycling has grown. Fortunately, continuous innovation in both airborne and space-based techniques has improved our ability to supply needed disturbance information.  This section will focus on new developments and perspectives in the field.  Presentations are solicited that push boundaries in terms of disturbance detection and causal agent attribution, automation, sensor and algorithm integration, and temporal and spatial domains.  New techniques that improve the immediacy and accuracy of disturbance maps are also invited.

The Bio-Atmospheric N Cycle: N Emissions, Transformations, Deposition, and Terrestrial and Aquatic Ecosystem Impacts
Biogenic and anthropogenic emissions of reactive nitrogen (Nr) are transported, chemically transformed, and deposited on land and waters, altering structure and function of ecosystems and degrading environmental quality.  Estimating atmospheric N emissions and deposition, and evaluating ecosystem responses require a diverse array of measurements and models that link processes at multiple scales.  We seek presentations on physical, chemical, biological, and anthropogenic processes that drive local, regional and global nitrogen exchange, impacts on ecosystems, carbon uptake, nitrogen export, biodiversity, human health, and policy implications and responses.

Recent Advances in Terrestrial (Lacustrine) Climate Archives
Terrestrial systems respond to climate change at very different, and often rapid, rates compared to marine environments. Estimating the rate and magnitude of climate change over the course of the Cenozoic is challenging in terrestrial environments due to the current lack of high-resolution paleoclimate records. Lacustrine materials (including but not limited to sediments, tufas, and microbialites) however, present a largely untapped archive of terrestrial climate data and potentially provide unique opportunities to study the timing, pace and effects of climate change (both gradual and abrupt) at a regional scale. The primary goal of this session is to bring together research involving high-resolution records of terrestrial climate change from lacustrine environments, with special focus on novel materials, innovative methods, and the development/refinement of proxies.

Responses of Arctic and Alpine Treeline Ecotones to Environmental Change
Alpine and arctic treelines are thermally-influenced boundaries between forested communities and more cold-tolerant non-arboreal vegetation. Concern about loss of mountain biodiversity under global warming makes treeline a worldwide focus for regime shifts. Treelines are ecotones structured by complex interactions among vegetation, soils, climate, snow, topography, and disturbance regimes. They are assumed to be sensitive to climate change, but decadal to millennial responses are complex, with poorly understood lags and feedbacks. Disturbance events and topographic influences further confound responses to changing climates. This session seeks contributions to improve basic understanding of treeline dynamics under conditions of climate change, focusing on the role of ecological and systems theory to interpret ecotone processes including seedling establishment and recruitment, demography and population ecology, mature forest growth responses, and interactions of alpine and arctic treeline ecotones to disturbance, and climate variability. Presentations reflect treeline studies from mountain and arctic regions worldwide.

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One Response to American Geophysical Union 2014 Fall Meeting: Deadlines and Sessions of Interest

  1. Pingback: Reminder: AGU Fall Meeting Abstract Deadline TODAY | The Novus Research Coordination Network

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