NAISMA’s Staff members provide a dynamic range of skills, experience and expertise toward invasive species management programs across North America.


Belle Bergner

Executive Director

Belle Bergner has been NAISMA’s Executive Director since 2016. With over 15 years experience in nonprofit management and fundraising, Belle is a creative problem solver and connector of ideas and people. Belle has a MS in Ecology and Evolution from the University of Pennsylvania and was an Outward Bound Instructor after finishing her BA at Mount Holyoke College.

In her free time, Belle enjoys walks with her dog and doing just about anything outside with her family in Milwaukee, WI.


Krista Lutzke

PlayCleanGo Program Coordinator

Krista Lutzke’s natural resources career began with the Wisconsin DNR in the Natural Heritage Conservation Bureau conducting invasive species management and later working as the Great Lakes Restoration Initiative’s Phragmites australis Project Coordinator. Most recently she served as Conservationist with the Door County Soil & Water Conservation Department. 

Krista has an Associates degree in Landscape/Horticulture, is a Wisconsin certified Plant Health Specialist, and holds a Bachelor’s degree in Environmental Policy.

She loves to go on road trips with her family, exploring all of our National Parks, camping, hiking, birding, and botanizing. 


Dave Burch

Program Manager
Weed Free Forage and Gravel Program
Online Trainings

Dave Burch has devoted his career to protecting Montana agriculture and natural resources from the threat of invasive species. With over 37 years of experience working with invasive plant species, he has gained and brought this experience to professional positions with the Montana Department of Agriculture, multiple county weed districts and a commercial business, and now as the Weed Free Forage and Gravel Program Manager for NAISMA.  

Dave is a fourth generation Montanan; born and raised in the beautiful Deer Lodge Valley, married to his wonderful wife Julie for over 42 years. Dave enjoys hunting and fishing with his two sons and trying to keep up with his five grandkids.  


Kim Kelly

Graphic Design
Program Coordinator

Kim Kelly is a writer, publisher and designer. She has more than a decade of experience in nonprofit communications and earned ASAE’s Certified Association Executive credential (CAE).

When she’s not working on NAISMA projects, Kim can be found tending to her native Midwest garden and hanging out with her husband and two sons in the suburbs of Chicago.

Vanesa Padilla

Vanesa Padilla

Program Assistant

Vanesa works on a little bit of everything at NAISMA! From record keeping, program communications, product shipping, and bookkeeping, Vanesa keeps us all together on one ship.

Vanesa was born in Palm Springs, California and raised in Milwaukee, Wisconsin. Vanesa is a student at Alverno College, studying Business Management. She is interested in pursuing a MBA and enjoys reading in her free time.


Tina Casagrand


Tina Casagrand is excited to bring more than a decade of experience in environmental journalism and conservation leadership to the important work of invasive species management. When not editing the communications of NAISMA and PlayCleanGo, she publishes The New Territory magazine and works as contract coordinator of the Missouri Invasive Plant Task Force. 

An eighth generation Missourian now living in Jefferson City, Tina loves roadtripping with her family and spending time around mossy woods, big rivers and cafes serving single origin coffees.