logo new
Login as: Member Non-Member

Take advantage of your SWS membership by participating in outstanding educational
opportunities without leaving your desk!

SWS is pleased to provide a webinar series on wetland science topics of interest. The convenience and flexibility of SWS webinars enables you to educate one or a large number of employees at once, reduce travel expenses and maintain consistent levels of productivity by eliminating time out of the office.

Webinar registration is complimentary to all SWS members. Certificates of completion, worth one hour of participation, are available upon request; please contact Kara Miller at kmiller@sws.org, if interested.  If you're unable to participate in the live webinar, all webinars will be recorded and archived for complimentary viewing by members on our Past Webinars page. 

Here's what our members are saying...

"Thank you presenters and thank you SWS for hosting this. It is a great SWS membership benefit." - Kurt Kowalski, Ann Arbor, MI

"Excellent coverage of fascinating topics for wetland scientists!" - Ellen Hartig, New York, NY

Upcoming SWS Webinars

Date: August 17, 2017

Time: 1:00 p.m. EDT

Dan Schmutz, M.S.
Greenman-Pedersen, Inc. (GPI)

Robust Interpolation of Water Levels and Ecological Conditions at Unmonitored Wetlands using Regression-kriging

Tampa Bay Water, Florida's largest wholesale water supplier, is assessing environmental recovery of wetlands and lakes in the Northern Tampa Bay area in response to regional groundwater production cut-backs. Groundwater production cut-backs were initiated in 2003 to improve regional aquifer levels and wetland hydrology and as part of a larger effort to develop diverse, environmentally-sustainable supplies that could accommodate future growth. Over 400 monitored wetlands and lakes are being assessed in comparison to hydrologic standards based on regulatory minimum level criteria. Unfortunately, water level data are unavailable for 684 unmonitored sites (7,900 acres) located in the vicinity of groundwater wellfields, causing uncertainty regarding the extent to which these areas have recovered. We implemented a robust regression-kriging (RK) interpolation approach using R to provide estimates of water level and ecological recovery at each unmonitored site. Best subsets multiple linear regression with the Bayesian Information Criterion was used to select the most probable, but parsimonious, subset of variables for prediction of median water levels relative to indicators of historic inundation for the period 2008-2014. Residuals showed spatial autocorrelation, so they were kriged to generate a combined RK model. Cross-validated residuals from the RK model ranged from -0.66 feet to +0.40 feet for 80% of the locations. The RK predictions were compared to wetland-type specific thresholds to yield recovery status for each unmonitored site. Similar methods were applied to a field-assessed metric of ecological condition available from over 800 locations. The interpolated estimates of both water levels and ecological conditions are being used to screen out recovered sites and prioritize others for further study and potential mitigation.

Dan Schmutz is the Chief Environmental Scientist for Greenman-Pedersen, Inc. (GPI), a 1,200-person multidisciplinary consulting firm. He holds a Master’s degree in Zoology from the University of South Florida. He has over 20 years of professional experience focused on the development and application of ecological and hydrological field assessments, GIS analyses, and appropriate statistical techniques for addressing questions of interest to water supply managers.

Members please log in to register

Learn more about member benefits

Date: September 21, 2017

Time: 1:00 p.m. EDT

Luca Marazzi, Ph.D.
Florida International University

Comparative studies of the variation in primary producer diversity and dominance in (sub)tropical wetlands 

Date: October 26, 2017


Sean Charles
Florida International University

Date: November 16, 2017

Date: December 14, 2017

Time: 1:00 p.m. EST

Paul Keddy, Ph.D.
Independent Scholar



ASWM Webinars

Interested in viewing more webinars? Visit the Association of State Wetland Managers (ASWM) webinar's page to access free webinars. These webinars focus on various topics, mostly relating to a specific project or work group. To learn more please click here



Knowledge about human culture, and its role alongside wetland science in the Ramsar Convention