Hawaii Pacific GIS Conference 2012: Disaster Management and Emergency Response II - Using ArcGIS to Proritize Invasive Plant Control
Using ArcGIS to Prioritize Invasive Plant ControlJean Fujikawa (Operations Planner / Analyst) Hawai‘i Pacific GIS Conference March 5, 2012
Agenda• OISC overview – who we are – our target species – miconia model example• Evaluating potential species for control using ArcGIS – OED survey and evaluation – OISC delimiting surveys
The O‘ahu Invasive Species Committee (OISC) is a voluntary partnership of private, governmental and non-profit organizationsand individuals united to prevent new invasive species infestationson the island of O‘ahu, to eradicate incipient invasive species, and to stop established invasive species from spreading.
Some of OISC’s target speciesMiconia Coqui Frog Himalayan BeardgrassMiconia calvescens Eleutherodactylus coqui Blackberry Andropogon glomeratus var. pumila Rubus discolorFountain Pampas Little Fire Canegrass grass Ant tibouchinaPennisetum setaceum Cortaderia spp. Wasmannia auropunctata Tibouchina herbacea
Model of miconia spreading across the watersheds of O‘ahu in the absence of systematic control effortsPlants Model Affectedcontrolled year 10 Miconia in Tahiti Miconia model output -Mānoa
OED refers high threat / low distribution species to OISC• After road, nursery and reported species OED had list of 1797 species.• Of the 1797 species 56 species were determined to be – present on the island but of low distribution, – weedy, – could be scored by the Hawai‘i Pacific Weed Risk Assessment (HPWRA)• After doing full assessments of the 56 of 16 species were chosen which high practicality of control and high weediness scores• OISC will delimit these 16 species and select which are feasible to eradicate
General survey decision process 600m Plants No plants found in found in 200m 200m 200m or = Scour 600m good Survey habitat good survey habitat = Scour
General survey decision process However, we need permission from land owners at each phase of our surveys • Hopefully they say YES! • If access cannot be obtained, we document our activity and move the species lower on our priority list
Model: Land ownership summary• Buffer species points 200m and 600m• Clip parcels• Dissolve on landowner• Result: number of different landowners, parcels per landowner, and acres
Summary• Using ArcGIS throughout the evaluation process• Standard format for dealing with each species at each site, however, each situation is unique• Early detection will prevent "the next miconia" from happening• If you’re are ever contacted by your local ISC for permission to survey and control on your property, please say YES!
Mahalo!• Supervisor (Rachel Neville)• Co-workers at OISC, OED• All our volunteers, committee members, partners and funders for their continuing support Jean Fujikawa - firstname.lastname@example.org OISC - http://www.oahuisc.org HWRA - http://www.botany.hawaii.edu/faculty/daehler/wra/