San Diego Management & Monitoring Program


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2002 2001 MSCP Rare Plant Survey and Monitoring Report report

Objectives of this Study: The goal of this project was to evaluate the current status of the rare plant populations on MSCP preserve lands administered by the City of San Diego, including population size, density, and habitat quality. Our three primary objectives were: 1. Review existing population status and location information to update the City's database and to identify City-owned lands that have the potential to support populations of MSCP covered plant species. 2. Conduct reconnaissance surveys on MSCP lands to determine if additional populations and locations of covered plants exist and to refine the locations where quantitative monitoring should be conducted. 3. Initiate quantitative monitoring for selected species and populations or locations that have not been monitored previously. This monitoring will establish the baseline data that will be used in conjunction with future monitoring to determine the status of these species and populations. This information will then be used to direct the management of these species' populations and habitats within the City's MSCP lands. The specific questions to be addressed in the long-term monitoring program are: a. What are the status and trends of the target species? b. What are the site conditions that may influence spatial patterns in the population dynamics of the target species? c. What management actions should be taken to minimize threats to the target species, and are these actions effective? The City of San Diego has conducted quantitative monitoring for short-leaved Dudleya (Dudleya blochmaniae ssp. brevifolia), San Diego Ambrosia (Ambrosia pumilla), and Nuttall's Lotus (Lotus nuttallianus). In addition, City staff and volunteers have monitored selected populations of willowy Monardella (Monardella linoides ssp. viminea) and San Diego thornmint (Acanthomintha ilicifolia). Table 1 lists the species that were monitored as part of this study (X) and those species for which the City of San Diego (SD) conducted quantitative monitoring. Although some of the species were not monitored as part of this study, all 11 species listed in Table 1 were included in the literature review and reconnaissance surveys discussed in Section 2.

2001 City of San Diego Multiple Species Conservation Program: Summary of Monitoring Results for Dudleya blochmaniae ssp. brevifolia report

Introduction: Short-leaved dudleya (Dudleya blochmaniae ssp. brevifolia) is listed by the State Government as an endangered plant species. The only five known occurrences of this extremely rare plant are Carmel Mountain, Del Mar Heights (Crest Canyon), Skeleton Canyon (UCSD), Torrey Pines State Park, and Torrey Pines State Park Extension. This plant is a perennial herb that typically blooms between April and June. The surveys conducted are listed in Table 1 below. The methodology and results of the monitoring are detailed below. The goal of the effort was to continue long-term monitoring of short-leaved dudleya under the Multiple Species Conservation Program (MSCP).

2002 Draft Carmel Mountain Preserve and Del Mar Mesa Preserve Management Plan: Chapters 1 and 2 report

Lead author: Bobbie Stephanson
This plan has been prepared to provide guidelines for the protection and maintenance of preserved natural open space on the Carmel Mountain Preserve and the Del Mar Mesa Preserve (Preserves). The natural open space of the Preserves harbors extremely sensitive and depleted plant communities and species unique to the region. Vernal pools and the associated federally and state listed flora and fauna; southern maritime chaparral; short-leaved dudleya (Dudleya blochmaniae ssp. Brevifolia); and the continuity of habitat for wildlife movement and gene flow are the primary resources identified for protection on these Preserves. The Preserves also act to protect the quality of life for residents of San Diego County and the quality of the experience for visitors by adding to the feeling of openness and interaction with nature that San Diego projects. The City of San Diego Multiple Species Conservation Program (MSCP) provides a framework for preserving and protecting natural resources in the San Diego region. The City of San Diego prepared a Subarea Plan under the MSCP to meet the requirements of the California Natural Communities Conservation Planning (NCCP) Act of 1992. The Carmel Mountain Preserve and Del Mar Mesa Preserve Management Plan describes the tasks which will allow the City to manage and maintain the Preserves in accordance with the MSCP and the Subarea Plan.

2003 City of San Diego Multiple Species Conservation Program: Summary of Monitoring Results for Dudleya blochmaniae ssp. brevifolia report

Introduction: Short-leaved dudleya (Dudleya blochmaniae ssp. brevifolia) is listed by the State of California as an endangered plant species. The only five known occurrences of this extremely rare plant in the City of San Diego are Carmel Mountain, Del Mar Heights (Crest Canyon), Skeleton Canyon (UCSD), Torrey Pines State Park, and Torrey Pines State Park Extension. This plant is a perennial herb that typically blooms between April and June. The surveys conducted are listed in Table 1 below. The methodology and results of the monitoring are detailed below. The goal of the effort was to continue long-term monitoring of short-leaved dudleya under the Multiple Species Conservation Program (MSCP).

2004 City of San Diego Multiple Species Conservation Program: Summary of Monitoring Results for Dudleya blochmaniae ssp. brevifolia report

Introduction: Short-leaved dudleya (Dudleya blochmaniae ssp. brevifolia) is listed by the State of California as an endangered plant species. The five known occurrences of this extremely rare plant in the City of San Diego are Carmel Mountain, Del Mar Heights (Crest Canyon), Skeleton Canyon (UCSD), Torrey Pines State Park, and Torrey Pines State Park Extension. This plant is a perennial herb that typically blooms between April and June. The surveys conducted are listed in Table 1 below. The methodology and results of the monitoring are detailed below. The goal of the effort was to continue long-term monitoring of short-leaved dudleya under the Multiple Species Conservation Program (MSCP).

2002 City of San Diego Multiple Species Conservation Program: Summary of Monitoring Results for Dudleya blochmaniae ssp. brevifolia report

Introduction: Short-leaved dudleya (Dudleya blochmaniae ssp. brevifolia) is listed by the State Government as an endangered plant species. The only five known occurrences of this extremely rare plant are Carmel Mountain, Del Mar Heights (Crest Canyon), Skeleton Canyon (UCSD), Torrey Pines State Park, and Torrey Pines State Park Extension. This plant is a perennial herb that typically blooms between April and June. The surveys conducted are listed in Table 1 below. The methodology and results of the monitoring are detailed below. The goal of the effort was to continue long-term monitoring of short-leaved dudleya under the Multiple Species Conservation Program (MSCP).

2000 City of San Diego Multiple Species Conservation Program: Summary of Monitoring Results for Dudleya blochmaniae ssp. brevifolia report

Introduction: Short-leaved dudleya (Dudleya blochmaniae ssp. brevifolia) is listed by the State Government as an endangered plant species. The only five known occurrences of this extremely rare plant are Carmel Mountain, Del Mar Heights (Crest Canyon), Skeleton Canyon (UCSD), Torrey Pines State Park, and Torrey Pines State Park Extension. This plant is a perennial herb that typically blooms between April and June. Monitoring for this plant was conducted on May 9, 2000 by Keith Greer and Holly Boessow and May 27, 2000 by Holly Boessow, Keith Greer, Heather Bruce, and Bernard Turgeon. The methodology and results of the monitoring are detailed below. The goal of the effort was to continue long-term monitoring of short-leaved dudleya under the Multiple Species Conservation Program (MSCP).

2005 City of San Diego Rare Plant Monitoring Report, 2005: Dudleya brevifolia report

The MSCP Biological Monitoring Plan (1996) identifies Del Mar Heights/Crest Canyon and Carmel Mountain as City of San Diego Short-Leaf Dudleya (Dudleya brevifolia) monitoring locations.

2009 City of San Diego MSCP Rare Plant Monitoring: 2009 Summary Results report

Summary of rare plant monitoring for Dudleya blochmaniae ssp. brevifolia (Short-leaf dudleya) at Carmel Mountain, Crest Canyon, and Skeleton Canyon.

2006 City of San Diego MSCP Rare Plant Monitoring: 2006 Summary Results report

Summary of rare plant monitoring for Dudleya blochmaniae ssp. brevifolia (Short-leaf dudleya) at Carmel Mountain, Crest Canyon, and Skeleton Canyon.

2009 Carmel Mountain and Del Mar Mesa Preserves Resource Management Plan report

The City of San Diego Multiple Species Conservation Program (MSCP) provides a framework for preserving and protecting natural resources in the San Diego region. The City of San Diego (City) prepared a Subarea Plan under the MSCP to meet the requirements of the California Natural Communities Conservation Planning (NCCP) Act of 1992. The Carmel Mountain Preserve and Del Mar Mesa Preserve Resource Management Plan (RMP) describes the tasks that will ensure management and maintenance of the Preserves in accordance with the MSCP and the Subarea Plan.