Out of Sight, but not Out of Mind

Beneath our feet…under snow and ice…deep in desert soils―plants and microbes keep churning. Whether or not they receive any attention, their activities affect water clarity, survival of salt marshes, the impact of future droughts, and the pace of climate change.

Much of the research from the National Science Foundation’s Long Term Ecological Research Network being presented at the 2018 American Geophysical Union Meeting deals with the often-hidden realms of deep soil processes, ice-covered lakes, and plant roots.

Studies of deep soil layers at two Northeastern forest sites (Hubbard Brook and Harvard Forest LTERs) reveal that freeze and thaw cycles―which are becoming more common than continuously frozen ground during winter―result in more active microbes and greater production of carbon dioxide from deep soils.

The Ecology Under Lake Ice (EULI) project, drawing heavily on data from the North Temperate Lakes LTER Program, present a global study on the importance of microbial activity under ice. Their findings―from over 100 globally-distributed lakes―may help predict the effects of longer ice-free periods on water quality and freshwater fish populations.

In the Southwestern desert, at the Jornada Basin LTER, studies comparing the effects of droughts on plant leaves and roots find that the above-ground portion of desert shrubs recover rapidly from even severe drought, but that plants facing successive droughts lose more and more roots with each incident.

Other NSF LTER-related presentations will deal with coastal sediment transport, the pace of permafrost thaw, mechanisms of salt marsh collapse, approaches to preserving and finding long term data, and the enormous power of engaging across multiple networks.

LTER Graduate Student Meet and Mingle:

The LTER Graduate Student Committee is planning a dinner for students to meet & mingle at AGU. Date is Thursday, Dec. 13th. Keep your eye on the LTER Graduate Student Facebook Group for further details.

TitleTimeLocation

Monday, December 10

Quantifying plant-available soil moisture in topographically complex terrain8:00 am- 12:20 pmConvention Ctr – Hall A-C (Poster Hall)
Non-linear shift from grassland to shrubland in temperate barrier islands8:00 am-12:20 pmConvention Ctr – Hall A-C (Poster Hall)
Application of machine-learning tools to extract patterns in long-term DOC monitoring data: an integrated, multi-scale approach9:15-9:30 amConvention Ctr – 156
Influence of Wrack on Coastal Foredune Development and Dune Habitat Complexity9:30-9:45 amConvention Ctr – 145B
Strengthening the biogeosciences in environmental research networks10:35-10:50 amConvention Ctr – 156
Identifying the spatial impact and temporal legacy of a single extreme warm event on the runoff generation efficiency of glaciers in the McMurdo Dry Valleys, Antarctica11:06-11:09 pmConvention Ctr – eLightning Theater II
Evaluation of stream restoration strategies for urban residential watersheds by coupling riparian and aquatic ecosystem modeling11:50 am-12:05 pmConvention Ctr – 101
Assessing Spatiotemporal Variability in Mountain Ecosystem Productivity with Multispectral Unmanned Aerial Systems1:40-1:55 pmConvention Ctr – 145A
Model Utilization of Land Cover Data Products in Heterogeneous Urban Areas: Development Density Bias and Correction1:40-6:00 pmConvention Ctr – Hall A-C (Poster Hall)
Defining the Importance of Upland Landscapes Using Critical Zone and Other Similar Observatories1:40-6:00 pmConvention Ctr – Hall A-C (Poster Hall)
Integrating ECOTONE and WEMO models to simulate the evolution of vegetation pattern impacted by sediment movement
1:40-6:00 pm
Convention Ctr – Hall A-C (Poster Hall)
Unexpected patterns of grassland root production during and after repeated extreme droughts2:10-2:25 pmConvention Ctr – 149AB

Tuesday, December 11

Projections of future stream water chemistry under the Representative Concentration Pathways in an old-growth Douglas-fir forest of the Pacific Northwest using a biogeochemical model with improved algorithm on soil cation exchange capacity8:00 am-12:20 pmConvention Ctr – Hall A-C (Poster Hall)
Relationship between shrub cover and plant available water in a U.S. Southwest desert8:00 am-12:20 pmConvention Ctr – Hall A-C (Poster Hall)
The Role of Broad-scale Climate in the Periodic Northern Expansion of Vesicular Stomatitis Virus Incidence in North America8:00 am-12:20 pmConvention Ctr – Hall A-C (Poster Hall)
NES-LTER: A New Long Term Ecological Research Site on the Northeast U.S. Shelf8:00 am-12:20 pmConvention Ctr – Hall A-C (Poster Hall)
CCHDO: delivering high quality hydrographic data from the Southern Ocean and beyond8:00 am-12:20 pmConvention Ctr – Hall A-C (Poster Hall)
Quantifying Mineral Weathering Across Lateral Gradients Using a Whole-Regolith Approach8:00 am-12:20 pm
Convention Ctr – Hall A-C (Poster Hall)
Characterizing Subsurface Hydrologic Fluxes within a Glaciated Watershed8:00 am-12:20 pmConvention Ctr – Hall A-C (Poster Hall)
The Different Responses of Arctic Terrestrial and Aquatic Food Webs to Long-term Nutrient Additions9:30-9:45 amConvention Ctr – 143A-C
A Stream-Side Mesocosm Study of Organic Matter Processing in the Hyporheic Zone10:35-10:50 amConvention Ctr – 151A
Development and Application of Percentile-Range Indexed Mapping and Evaluation (PRIME) Tool for Long Term Ecological Assessment11:20-11:35 amConvention Ctr – 145A
Correcting tree-ring ẟ13C-based water-use efficiency time series for tree-size and canopy-position effects in eight temperate tree species11:35-11:50 amConvention Ctr
– 145B
Using soil development patterns and processes to explain sources of streamflow generation in a glaciated catchment1:40-1:55 pmConvention Ctr
– 154AB
Coupled Interaction of Shrubs, Dunes, and Barrier Overwash1:40-6:00 pmConvention Ctr – Hall A-C (Poster Hall)
Classification mapping of salt marsh vegetation by flexible monthly NDVI time-series using Landsat imagery1:40-6:00 pmConvention Ctr – Hall A-C (Poster Hall)
Modeling Long-Term Salt Marsh Response to Sea Level Rise and Human Impacts in the Sediment Deficient Plum Island Estuary, MA1:40-6:00 pmConvention Ctr – Hall A-C (Poster Hall)
Data-model integration to develop a knowledge landscape map for improved prediction1:40-6:00 pm
Convention Ctr – Hall A-C (Poster Hall)
Digging down: How respiration from different soil depths responds to climate change3:25-3:40 pmConvention Ctr – 150B

Wednesday, December 12

Numerical Modeling of Historical and Projected Permafrost Soil Temperatures with Carbon Flux Implications8:00 am-12:20 pmConvention Ctr – Hall A-C (Poster Hall)
Interactive effects of seagrass and the microphytobenthos on sediment suspension within shallow coastal bays8:00 am-12:20 pmConvention Ctr – Hall A-C (Poster Hall)
A trans-disciplinary approach to disease ecology: linking local to regional scales of drivers and biological processes through big data-model integration8:00 am-12:20 pmConvention Ctr – Hall A-C (Poster Hall)
Hydrometric and Tracer Based Analysis of Hydrologic Storage Across Geologically and Geomorphologically Variable Temperate Catchments8:00 am-12:20 pm
Convention Ctr – Hall A-C (Poster Hall)
Facilitating data discovery on the Internet using sitemaps.org and schema.org dataset metadata through the Environmental Data Initiative Data Portal8:04-8:07 amConvention Ctr – eLightning Theater II
Precipitation-Pulse Regimes Determine Functioning of Dryland Ecosystems08:15 – 08:30 amConvention Ctr – 150A
The Pulse-Reserve Paradigm of Aridland Function from the Microbial Perspective08:30 – 08:45 amConvention Ctr – 150A
Warming and nitrogen addition alters soil organic matter composition in a temperate forest soil10:20-10:35 amConvention Ctr – 150A
Research is more valuable when its data are published10:27-10:30 amConvention Ctr – eLightning Theater II
Leveraging network science to evaluate mechanisms and models of soil organic matter stabilization and change10:50-11:05 amConvention Ctr – 150A
Linking continental scale ice loss to winter biogeochemistry in north temperate lakes11:05-11:20 amConvention Ctr – 149AB
Concentration-Discharge Responses to Storm Events in Coastal California Watersheds11:35 – 11:50 amConvention Ctr – 145B
Assessing salt marsh resilience with sediment fluxes: the critical role of marine sediment inputs1:40-1:55 pmConvention Ctr – 149AB
Concentration-Discharge Responses to Storm Events in Coastal California Watersheds11:35 – 11:50 amConvention Ctr – 145B
Assessing salt marsh resilience with sediment fluxes: the critical role of marine sediment inputs1:40-1:55 pmConvention Ctr – 149AB
Assessing Changes in Hyporheic Storage from Over Two Decades of Diel Flood Recessions in Antarctic Streams1:40-6:00 pmConvention Ctr – Hall A-C (Poster Hall)
Sediment Flux and Short-Lived Fallout Radionuclide Activities in an Urban setting, Dead Run, Baltimore, Maryland, USA1:40-6:00 pmConvention Ctr – Hall A-C (Poster Hall)
Increased Severity of Ice Storms May Have Important Implications for Carbon Cycling1:40-6:00 pmConvention Ctr – Hall A-C (Poster Hall)
Variability in Leaf Litter Decomposition Across a Forest Mycorrhizal Gradient1:40-6:00 pmConvention Ctr – Hall A-C (Poster Hall)
Drivers of Bistability in a Rapidly Submerging Marsh2:25-2:40 pmConvention Ctr  – 149AB
Decoupling between Marsh and Tidal Channel Sediment Supply under Seasonal Variations in Plant Biomass5:15-5:30 pmConvention Ctr – 145B
Seagrass impact on sediment exchange between tidal flats and salt marsh and the sediment budget of shallow bays5:30-5:45 pmConvention Ctr – 145B

Thursday, December 13

Using ontologies to operationalize Essential Biodiversity Variables8:00 am-12:20 pmConvention Ctr – Hall A-C (Poster Hall)
Soil creep in a New England salt marsh: fast, seasonal, and likely mediated by vegetation8:00 am-12:20 pmConvention Ctr – Hall A-C (Poster Hall)
The Environmental Data Initiative’s Approach To Data Publishing Training For Research Teams8:00 am-12:20 pmConvention Ctr – Hall A-C (Poster Hall)
Consequences of Extreme Rainfall Patterns on Nitrous Oxide Fluxes in Midwest Cropping Systems8:00 am-12:20 pmConvention Ctr – Hall A-C (Poster Hall)
Heterogeneous patterns of mangrove disturbance and recovery from Hurricane Irma8:00 am-12:20 pmConvention Ctr – Hall A-C (Poster Hall)
Measuring the Effects of Long-term Nitrogen Fertilization on Soil Carbon Cycling in Two Tropical Forests8:00 am-12:20 pmConvention Ctr – Hall A-C (Poster Hall)
Employing Remote Sensing Techniques to Quantify Sediment Supply and Evaluate Marsh Vulnerability in the Plum Island Estuary8:00 am-12:20 pmConvention Ctr – Hall A-C (Poster Hall)
The impact of offshore waves and vegetation on the sediment budget in the Virginia Coast Reserve (VA)8:00 am-12:20 pmConvention Ctr – Hall A-C (Poster Hall)
Influence of Ocean Acidification and Climate Change on the Biogeochemistry in the Gulf of Alaska: A regional modeling study8:00 am -12:20 pmConvention Ctr – Hall A-C (Poster Hall)
Variations of suspended sediment yields in nested urban catchments8:00 am -12:20 pmConvention Ctr – Hall A-C (Poster Hall)
Heterogeneity of groundwater and surface water nitrate loads in nested urban watersheds8:00 am -12:20 pmConvention Ctr – Hall A-C (Poster Hall)
Modeling coupled atmospheric-hydrological processes in urban areas8:00 am -12:20 pmConvention Ctr – Hall A-C (Poster Hall)
Using a Big Data Model Integration Approach to Forecast the Geographic Range of an Invasive Disease at the Continental Scale8:00 am -12:20 pmConvention Ctr – Hall A-C (Poster Hall)
Increasing accumulation of soil organic matter in mangrove forests could indicate greater-than-expected resilience to sea-level rise and enhance the ongoing carbon sink capacity9:15-9:30 am Convention Ctr – 147B
Water Stable Isotope Ratios Reveal Network Scale Variability in Base Flow Water Sources in a Western Cascades headwater stream network1:40-6:00 pmConvention Ctr – Hall A-C (Poster Hall)
Will mangrove encroachment mitigate carbon loss with saltwater intrusion in subtropical coastal wetlands?1:40-6:00 pmConvention Ctr – Hall A-C (Poster Hall)
Drivers and Mechanisms of Peat Collapse in Coastal Wetlands1:40-6:00 pmConvention Ctr – Hall A-C (Poster Hall)
Exploration of Sentinel-1 InSAR observations for Monitoring Water Level Changes in Everglades Florida1:40-6:00 pmConvention Ctr – Hall A-C (Poster Hall)
Supporting Teachers to Identify Natural Phenomena Through the Storylines Embedded in Online Earth Science Datasets2:04-2:10 pmConvention Ctr – 209A-C

Friday, December 14

Fate of cohesive sediments in a marsh-dominated estuary8:00 am-12:20 pmConvention Ctr – Hall A-C (Poster Hall)
Harnessing the Power of Open Data and Analytics for Characterizing the Role of Hydrological Processes in the Spread of a Vector-borne Livestock Disease in Multiple Watersheds across the Western US8:00 am-12:20 pmConvention Ctr – Hall A-C (Poster Hall)
Aeolian processes: an overlooked driver of state changes in drylands8:00 am-12:20 pm Convention Ctr – Hall A-C (Poster Hall)
Multi-year and multi-season transcriptomic profiling of forest tree species from LTER sites for understanding latitudinal variation in growth performance.9:24-9:36 amConvention Ctr – 149AB
Energy balance changes drive differential response to simulated warming in an alpine and subalpine snowpack10:20-10:35 amConvention Ctr – Salon G
Machine Learning for Accelerating Science13:40-18:00 pmConvention Ctr – Hall A-C (Poster Hall)

Additional Presentations of Interest to the LTER Network

ENVRI FAIR – the next step towards FAIRer environmental researchT 9:00-9:10 amConvention Ctr – 209A-C
Extending Ecological Monitoring Networks with Unmanned Aircraft System Remote SensingT 11:50-12:05 pmMarriott Marquis – Marquis 9-10
Forest stand structure and dynamics of warm temperate forest in Mt. Geumsan, KoreaW 1:40-6:00 pmConvention Ctr – Hall A-C (Poster Hall)
Estimating Terrestrial Water and Carbon Fluxes using an Integrated Rate MethodologyR 4:00-4:15 pmConvention Ctr – 154AB
Genomic Observatories Network: socio-technical perspectives on the path to long-term multi-omic observationR 8:00 am-12:20 pmConvention Ctr – Hall A-C (Poster Hall)