Weeds or Wilds?
Protecting Orange County’s Wildlands from Emergent Invasive Plants https://www.youtube.com/watch?v=dJ244M0AD0Y
Localized control and Land Early Restoration Manager Detection Control Programs OC CNPS Emergent Invasive Plant Management Program
A CNPS Chapter model for local early detection and effective response to emergent invasive weeds
Good eradication-based invasive plant management requires:
• Identifying and communicating new records • Rapid response • Persistence • Cross-border regional funding Emergent Invasive Plant Management Program
The OC CNPS Program works because we are:
• Unencumbered by boundaries, jurisdictions or procedural constraints • Expert knowledge of the issues and plants • An organizational structure • Existing partnerships with land managers and agencies • Large body of members and volunteers • Ability to act quickly
Emergent Invasive Plant Management Program
Our focus is specifically invasive species that are:
• Newly arrived in the region or of limited distribution • High potential for invasiveness • High probability of significant ecological disruption
Our Goal: County-wide early detection and facilitation of the effective management of specific emergent invasive weeds within our region Emergent Invasive Plant Management Program
Partnerships provide:
• Resources to get the job done • Long-term management and oversight of problems we discover • Tools to be able to accomplish EDRR • Authority to implement good policies
Emergent Invasive Plant Management Program
The List: 2017 Emergent Invasive Plants
Aegilops triuncialis Barbed goatgrass • A dynamic list Cenchrus echinatus Southern sandbur Cenchrus longispinus Mat sandbur • Plant candidates are suggested Centaurea solstitialis Yellow starthistle • Must qualify as emergent Chrysanthemoides monilifera Boneseed Delairea odorata Cape ivy • A data – driven scoring and review Dittrichia graveolens Stinkwort process Ehrharta calycina Perennial veldt grass Hypericum canariense Canary Island St. John's Wort • Highest priority plants are “Red Alert” Iris pseudacorus Yellow flag Iris Melinis repens Natal grass Oncosiphon piluliferum Stinknet Parthenium hysterophorus Santa Maria feverfew Rubus armeniacus Himalayan blackberry Senecio linearifolius Australian fireweed Volutaria tubuliflora Egyptian knapweed
Candidate List - Considered 46 species Watch List – Not yet recorded in Orange County 39 species Former List – Removed from the Emergent List Senecio linearifolius var. linearifolius 9 species Emergent Invasive Plant Management Program
A data driven score - using objective measurements Scoring Protocol: (Abundance+Distribution+Invasiveness+Reproductive rate)/4 + Alert status Abundance Distribution Ecological Impact Rate of Spread Variables: Cal-IPC ranking/alert ID difficulty
Published data Unpublished data Local knowledge Land managers Botanical consultants Active field experts 2016 Species Removed from List
Onionweed Sahara mustard Spiny emex Asphodelus fistulosus Brassica tournefortii Emex spinosa
Summer cypress Whitetop Perennial pepperweed Kochia scoparia Lepidium draba Lepidium latifolium
Printable profiles for each Emergent Species
Emergent Invasive Plant Management Program
So, what are the plants? Big Canyon, Upper Newport Bay Moroccan Knapweed (Volutaria tubuliflora) Egyptian Knapweed (Volutaria tubuliflora) Egyptian Knapweed (Volutaria tubuliflora)
Detected March 31, 2015 at Big Canyon, Upper Newport Bay Possibly the second record for U.S. Reported to OC CNPS, confirmed and mapped within 48 hours Communicated by OC CNPS to various land managers and agencies Aggressive management begins within 10 days 3,624 plants removed in first year CDFA adds to Noxious Weed List– A rating, Cal-IPC convenes a Volutaria Working Group Egyptian Knapweed (Volutaria tubuliflora) Egyptian Knapweed (Volutaria tubuliflora) Egyptian Knapweed (Volutaria tubuliflora) Santa Ana, Lincoln Ave and 17th Street Santa Maria feverfew (Parthenium hysterophorus) San Diego Creek Channel, Irvine Santa Maria feverfew (Parthenium hysterophorus) Arroyo Trabuco, O’Neill Park Stinkwort (Dittrichia graveolens) Stinkwort (Dittrichia graveolens) Aliso Canyon, South Laguna Boneseed (Chrysanthemoides monilifera ssp. monilifera) Boneseed (Chrysanthemoides monilifera) Boneseed (Chrysanthemoides monilifera ssp. monilifera) Sahara mustard (Brassica tournefortii) Linear-leafed Australian fireweed (Senecio linearifolius) Yellow flag iris (Iris pseudacorus) Perennial veldt grass (Ehrharta calycina) Natal grass (Melinis repens) Himalayan blackberry (Rubus armeniacus) Sandburs (Cenchrus echinatus and longispinus) Yellow star thistle (Centaurea solstitialis) Cape ivy (Delairea odorata) Canary Island St. John’s wort (Hypericum canariense) Stinknet (Oncosiphon piluliferum) Emergent Invasive Plant Management Program
If you find any of the invasive plants on these pages, at a NEW site: Known locations can be seen at http://www.occnps.org/invasives/locations-and-status-updates.html
• Record the plant’s location as exactly as you can (GPS coordinates, if possible), the date you saw it, and an estimate of how many there were. Include the site’s landowner or manager, if known. • Take some identifying photos, especially clear close-ups of flowers and/or leaves from different angles. • If you take a sample, place it immediately into a sealed bag. • To avoid spreading the plant, check your clothing and shoes thoroughly before leaving the area, and remove and bag all traces of seeds. • Report the find immediately to [email protected].
Emergent invasive plants are non-native species that have appeared recently in Orange County, are not yet widely distributed here, and are known or presumed to spread readily.
http://www.occnps.org/invasives.html [email protected] Emergent Invasive Plant Management Program
Invasive Plant Activities
Irvine Ranch Conservancy . Sahara Mustard Pull at Loma Ridge, Thursday Feb. 2nd, 8:30-12:30PM (Letsgooutside.org) . Sahara Mustard Pull at Loma Ridge, Thursday Feb 16th, 8:30-12:30PM (Letsgooutside.org)
Orange County Parks/Laguna Coast Wilderness Park . www.ocparks.com . www.ocparks.com/lagunac
Back to Natives . www.backtonatives.org
OC CNPS . Pulls for yellow star thistle, stinkwort, others . Email [email protected]
occnps.org/invasives Weeds or Wilds?