San Diego Management & Monitoring Program


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Willowy monardella Monardella viminea

Goal: Maintain or enhance existing willowy monardella occurrences and establish new occurrences, as needed, to ensure multiple conserved occurrences with self sustaining populations to increase resilience to environmental and demographic stochasticity, maintain genetic diversity, and ensure persistence over the long term (>100 years) in coastal sage scrub vegetation communities.

regional and/or local NFO 2021 SL

MGT-IMP-SBPL MONVIM-6

Management units: 4, 6

In 2021, begin implementing high priority actions for willowy monardella in the MSP Seed Collection, Banking and Bulking Plan to collect and store seeds at a permanent seed bank and to provide propagules as needed for management oriented research, existing population enhancement and establishment of new occurrences.
Action Statement Action status Projects
IMP-1 Bulk seed at a qualified facility for enhancement, expansion, establishment or transplantation projects using seed from genetically appropriate donor accessions in the propagation seed bank collection. waiting for precedent action California Plant Rescue (CaPR) - San Diego Zoo Global's Native Plant Seed Bank
IMP-2 Maintain records for collected seed to document donor and receptor sites, collection dates and amounts. Submit seed collection, storage and bulking data to the MSP Web Portal. waiting for precedent action California Plant Rescue (CaPR) - San Diego Zoo Global's Native Plant Seed Bank
Criteria Deadline year
By 2024, =2 Seed Collection, Banking and Bulking Action Completed for Willowy Monardella 2021
Code Obj. code Statement
MONVIM-5 MGT-PRP-SBPL In 2020, begin preparing a section for willowy monardella in the MSP Seed Collection, Banking and Bulking Plan that incorporates best science and management practices (Wall 2009, KEW 2016) to preserve genetic diversity and rescue occurrences in case of catastrophic disturbance. The plan should also include recommendations from the 2016-2017 genetic study and the 2019 baseline surveys and hydrological evaluation to guide collection and storage of seeds over the long term at a permanent, established conservation seed bank (e.g., Institute for Conservation Research Native Plant Seed Bank, Rancho Santa Ana Botanic Garden Seed Conservation Program) and for providing a source of seeds for management purposes. The plan should include recommendations for: collecting and storing seeds for conservation banking; management oriented research; rescuing occurrences after catastrophic disturbances; and seed bulking and out-planting to augment extant occurrences or to establish new occurrences with consideration of genetic implications for population sustainability.
MONVIM-7 MGT-PRP-MGTPL In 2020, begin preparing a section for willowy monardella in the MSP Rare Plant Management Plan that prioritizes management actions to maintain the large occurrence and enhance at least 4 small occurrences on Conserved Lands (see occurrence table) based upon an assessment of data on occurrence status, habitat and threats. Prepare prioritized management recommendations to re-establish historic occurrences or new occurrences in suitable habitat, if determined to be necessary for gene flow and to maintain self sustaining populations for the long term persistence of the species in the MSPA. Minimum criteria for enhancement are to reduce invasive annual nonnative plants and thatch to less than 20% absolute cover within the occurrence.
MONVIM-8 MGT-IMP-MGTPL In 2021, begin implementing highest priority management actions identified for willowy monardella in the MSP Rare Plant Management Plan.