2017 Wetland Mapping Consortium Recorded Webinars
[
2016 - 2015 - 2014 - 2013 - 2012 - 2011] 

 

 Mapping Wetland Inundation Dynamics Using Multi-Source Satellite Data

Wednesday, July 19, 2017 - 3 pm ET 

INTRODUCTION

Marla Stelk, Policy Analyst, ASWM [POWERPOINT PRESENTATION]

PRESENTER

Ben DeVries, Post-Doctoral Research Associate, Department of Geographical Sciences, University of Maryland [POWERPOINT PRESENTATION]

ABSTRACT

While the increasing availability of Earth observation has led to impressive advances in automated land cover mapping algorithms and products, wetlands often remain insufficiently or inconsistently represented in land cover products. On the other hand, while wetland inventories are able to provide significantly more thematic detail than general land cover products, their production usually relies on highly manual, static and expensive mapping methods. Surface inundation in wetlands is particularly difficult to quantify, given the complexity of the mixed water-vegetation-soil reflectance signatures as well as the highly dynamic nature of inundation in most wetland ecosystems. Optical data, such as those from the Landsat and Sentinel-2 satellite constellations, have been shown to be capable of detecting surface inundation at medium spatial resolution (~30m), allowing for the mapping of long-term trends. On the other hand, radar data are increasingly used to track surface inundation at regular time intervals, owing to the ability of radar energy to penetrate clouds. Despite these advantages, the temporal resolution of any single satellite sensor is often insufficient to adequately monitor surface inundation in wetlands, given the dynamic and often ephemeral nature of surface hydrology. New mapping approaches based on the fusion of optical and radar data streams shows promise in establishing regular fine-temporal-resolution records of wetland inundation. Multi-source data products related to wetland inundation are expected to support the ongoing development and updating of national and regional wetland inventories, support greenhouse gas modelling studies and the identification and quantification of wetland ecosystems.

BIO

Ben DeVries is a Post-Doctoral Research Associate at the Department of Geographical Sciences, University of Maryland. He has a background in Remote Sensing and is currently developing algorithms for detecting and quantifying surface water inundation at fine spatial and temporal resolutions using multi-source satellite data. Ben earned his Ph.D. at Wageningen University in the Netherlands, where he studied forest dynamics in the tropics and developed novel methods using temporally dense Landsat time series data. He also earned his M.Sc. at Wageningen University, focussing on the role of surface and sub-surface hydrology on carbon emissions in degraded tropical peatlands.



Recent Updates to the EnviroAtlas Tool: Mapping Ecosystem Goods and Services

Wednesday, February 15, 2017 - 3:00 pm ET

INTRODUCTION

Marla Stelk, Policy Analyst, ASWM [POWERPOINT PRESENTATION]

PRESENTER

ABSTRACT

EnviroAtlas is a multi-organization effort led by the US Environmental Protection Agency to develop, host and display a large suite of nation-wide geospatial indicators of ecosystem goods and services. EnviroAtlas includes an Interactive Map which makes it easy for non-GIS users to view and analyze geospatial data including resources that could be particularly useful for wetland conservation, management, and research. An example of the many data layers available in EnviroAtlas is a nationwide 30-meter resolution data layer depicting suitability for wetland restoration which has been based on existing soils, land cover, and topography. Other data layers describe the land cover composition of water body buffers and connectivity to nutrient sources. Additional data layers relate to ecosystem markets and provide information about wetland mitigation banks. Other examples relate to biodiversity. More than 160 national indicators of ecosystem service supply, demand, and drivers of change provide a framework to inform decisions and policies at multiple spatial scales, educate a range of audiences, and supply data for research. A higher resolution component based on a one-meter land cover classification is also available, providing over 100 data layers for finer-scale analyses for selected communities across the US.

BIO

Anne is the Project Lead for EnviroAtlas, a web-based interactive tool that integrates over 300 mapped data layers and helps users understand the implications of planning and policy decisions on the benefits humans derive from ecosystems. Anne has a background in landscape ecology and ecosystem services and has been with EPA since 1991. She currently co-chairs a Working Group on Ecosystem Services housed within the White House Committee on Environment, Natural Resources and Sustainability, Subcommittee on Ecological Systems. She received a Bachelor of Science Degree in Environmental Studies from Utah State University in 1986. One of her primary research foci has been examining relationships between spatial patterns of landscape characteristics and conditions of and risks to ecological resources and the societal benefits they provide. 

 
Part 1: Marl Stelk, Policy Analyst, Association of State Wetland Managers
Presenter: Anne Neale, EnviroAtlas Project Lead, U.S. Environmental Protection Agency
  Part 2: Presenter: Anne Neale,
EnviroAtlas Project Lead, U.S.
Environmental Protection Agency
     
   
Part 3: Questions/Answers    


[Return to top]

[WMC Webinars: 2016 - 2015 - 2014 - 2013 - 2012 - 2011]

[Future WMC Webinars]