Map of Subregion 4

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#456, Point Reyes SMCA Five Brooks Trailhead Marine Life Protection Act 4 Suggested SMCA Coastal Marsh 5 Suggested SMP Estuary 6 Suggested SMR Eelgrass MM AA RR II NNSuggested Special Closure North Central Coast Study Region 1 CC OO UU NN TT CYYoastal Access Points 30 m (16 fm) contour line Rocky Shores 100 m (55 fm) contour line Hardened Shores 200 m (109 fm) contour line 7 Coastal Marsh Predicted Hard Bottom Audubon Canyon Ranch 7 Bolinas Lagoon NaBtueraec hPeresserve Predicted Soft Bottom 7 Tidal Flats Unsurveyed Bolinas Point 3 0 1.8 Bolinas Point SurfGrass California Department of Fish and Game Agate Beach (Marin County) Mount TamalpaMiisle sState Park Marine Region GIS Lab, Oct 23, 2007 Stinson Beach Muir Woods National Monument Steep Ravine Beach #460, Redwood Creek SMR Tennessee Valley Marin Headlands #459, Duxbury #465, Duxbury Golden Gate Hostel Kirby Cove Reef SMCA Existing SMCA YMCA Point Bonita Center PPooiinntt BBoonniittaa Point Bonita Lighthouse Fort Point Baker Beach Lands End San Francisco Ocean Beach (San Francisco) SSAANN FFRRAANNCCII SSCCOO CCOOUUNNTTYY Bay Area Ridge Trail Lake Merced Fort Funston NNoorrtthh CCeennttrraall CCooaasstt SSttuuddyy RReeggiioonn Thornton State Beach Northridge City Park These marine protected area (MPA) concepts were submitted to the California Marine Life Protection Act North Central Coast Project on October SS AANN 17, 2007 as a draft option for an MPA array. These concepts have been M A T E O generated by the Jade work group as one of many array options which will be M A T E O reviewed by the MLPA Science Advisory Team and the MLPA Blue Ribbon Task CC OOUU NNTT YY Force. These are not MPA proposals for review by the California Fish and Game Commision. Further information on each MPA concept can be found in the corresponding text document under the name of the MPA. Source: 1 - California Coastal Conservancy, 2002 Mori Point 2 - NOAA Environmental Sensitivity Index, 2006 3- Mineral Management Service, National Marine Sanctuaries, 1982 4 - CDF FRAP multi-source land use data, 2002; CDFG Natural Diversity Database, 2003 Rockaway Beach 5 - U.S. Fish and Wildlife National Wetlands Inventory, 2004; NOAA ESI 2006 6 - The Nature Conservancy, Humboldt Bay Atlas, California Department of Fish and Game; NOAA, 2004 Point San Pedro San Pedro Beach 7 - Multibeam sonar data collected by California State University Monterey Bay Sea Floor Mapping Lab Point San Pedro Pedro Point Headlands Please see full MLPA NCCSR Regional Profile for additonal information. Note: This map is NOT a recommendation to the California FiDDshee vviillss SSlliiddee and Game Commission; it is an draft option for an MPA array for review. NCCRSG Jade Work Group Draft Option Subregion 4 - Double Point to Point San Pedro for an MPA Array, "Option A" (10/17/07).

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The National Park Service Water Resources Division is responsible for providing water resources management policy and guidelines, planning, technical assistance, training, and operational support to units of the National Park System. Program areas include water rights, water resources planning, regulatory guidance and review, hydrology, water quality, watershed management, watershed studies, and aquatic ecology. Technical Reports The National Park Service disseminates the results of biological, physical, and social research through the Natural Resources Technical Report Series. Natural resources inventories and monitoring activities, scientific literature reviews, bibliographies, and proceedings of technical workshops and conferences are also disseminated through this series. Mention of trade names or commercial products does not constitute endorsement or recommendation for use by the National Park Service. Copies of this report are available from the following: National Park Service (970) 225-3500 Water Resources Division 1201 Oak Ridge Drive, Suite 250 Fort Collins, CO 80525 National Park Service (303) 969-2130 Technical Information Center Denver Service Center P.O. Box 25287 Denver, CO 80225-0287 Cover photos: Top: Golden Gate Bridge, Don Weeks Middle: Rodeo Lagoon, Joel Wagner Bottom: Crissy Field, Joel Wagner ii CONTENTS Contents, iii List of Figures, iv Executive Summary, 1 Introduction, 7 Water Resources Planning, 9 Location and Demography, 11 Description of Natural Resources, 12 Climate, 12 Physiography, 12 Geology, 13 Soils, 13
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Manual Removal of Cape Ivy at Audubon Canyon Ranch's Bolinas
Manual Removal of Cape Ivy at Audubon Canyon Ranch’s Bolinas Lagoon Preserve Len Blumin ([email protected]) Daniel Gluesenkamp ([email protected]) Introduction Cape ivy (Delairea odorata), an invasive vine from South Africa, has invaded many riparian areas of coastal California, and threatens thousands of acres of valuable habitat. This poster presents our 6 year experience in removing Cape ivy (CI) along a coastal creek and floodplain, using volunteer labor and a "modified scorched earth" approach. The Project – Audubon Canyon Ranch manages a system of nature preserves. Cape ivy appeared in ACR's Bolinas Lagoon Preserve before 1960 and by 1994 had invaded 6 acres in the flood plain of Volunteer Canyon (VC). In 1994 CI was identified as the highest priority invasive plant on the preserve. Encouraged by a successful CI removal pilot project in 1995, we set out to completely remove CI from Volunteer Canyon. The Site – The creek in Volunteer Canyon drops steeply through a mixed evergreen forest, flattens out as it enters the flood plain, then empties into Bolinas Lagoon. The canyon was logged from 1850 to 1875, supported ranching, farming and residential uses until the 1960s, and since 1968 has been used as an environmental education center and for ACR staff housing. While the preserve supports rich biodiversity and the canyon's slopes have few exotic plants other than non-native grasses, the flood plain is invaded by Cape ivy, Vinca major, and other non-indigenous plants listed in Table 1. Cape Ivy growth – By the mid 1970's the core Cape ivy population had covered 6.5 acres, as shown on the map.
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Great Blue Herons Interrupt Nest-Guarding to Drink
SHORT COMMUNICATIONS 501 attacking a Bald Eagle near a large stick nest only 10 We are grateful to J. B. Foster, S. G. Scaly, J. J. m from the ground. However, the nest contained a Hickey, and T. J. Cade for criticism of this manuscript large, young eagle and was the only such nest on the and for supporting funds from the Ecological Reserves island. Soon the adult male peregrine joined its mate Unit, Department of Environment, Victoria, British and became especially agitated and noisy near an old Columbia. spruce tree which had a large natural crack high up its trunk. A few pale feathers surrounded the hole LITERATURE CITED entrance, and several carcasses of recently eaten Rhinoceros Auklets were found in the vicinity, indi- BEEBE, F. L. 1960. The marine peregrines of the cating probable use by peregrines. northwest Pacific Coast. Condor 62: 145-189. Clearly, a small, tree-nesting population of Pere- BEEBE, F. L. 1974. Field studies of the Falconi- grine Falcons exists on islands off the northern coast formes (vultures, hawks, falcons and eagles) of of British Columbia, but we do not know whether this British Columbia. Occas. Pan. B.C. Prov. Mus. is a recent phenomenon. Campbell visited this area 17: 1-163. briefly in the early summer of 1970, and although CA~ZPBELL, R. W., AND D. STIRLING. 1971. A photo- adult peregrines were seen, no evidence of nesting duolicate file for British Columbia vertebrate was found. He may have overlooked tree nests, how- recbrds. Syesis 4~217-222. ever, because adult peregrines call only when intrud- DEMENTEV,’ G.
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Bolinas Lagoon Is One of Marin County's Most Significant Natural
"The lagoon is one of Marin County's most significant natural resources. The lagoon tidelands are publicly-owned. ... Along with Drake's Estero and Tomales Bay, Bolinas Lagoon provides an important coastal environment for fish, birds and mammals that is unparalleled along the northern California coast between San Francisco and Humboldt Bays. Open water, mudflat and marsh provide productive and diverse habitats for marine fishes, waterbirds, and marine mammals. Bolinas Lagoon is part of a much larger protected natural habitat complex that is part of or adjoins the Gulf of the Farallones National Marine Sanctuary (GFNMS, Pt. Reyes National Seashore, Golden Gate National Recreation Area, Central California Coast Biosphere Preserve, Mt. Tamalpais State Park, and the Audubon Canyon Ranch Bird Sanctuary." Bolinas Lagoon. Located in California, less than 20 kilometers up the coast from San Francisco’s Golden Gate Bridge, Bolinas Lagoon is a tidal embayment of open water, mudflat, and marsh which provides productive and diverse habitats for marine fishes, waterbirds, and marine mammals, and it is also part of a much larger protected natural habitat complex in the region. The site is located on the Pacific Flyway, which makes the Lagoon an ideal staging ground and stopover site for migratory birds, and the temperate climate provides wintering habitat for a wide array of ducks, geese, and shorebirds. The area supports a number of recreational uses, including the use of manually-powered watercraft. Bolinas Lagoon Open Space Preserve Marin County Open Space District Bolinas Lagoon is one of Marin County’s most significant natural resources. Its 1,100 acres, known as the Bolinas Lagoon Open Space Preserve and managed by the Marin County Open Space District, was designated a Wetland of International Importance by the Ramsar Convention in 1998.
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ACR's Olema Marsh and Restoration of The
AUDUBON CANYON RANCH Number 44 BULLETIN Spring 2009 ACR’s Olema Marsh and Restoration of the Giacomini Wetlands RESTORING THE NATURAL HYDROLOGY OF TOMALES BAY by John Kelly single, lightning fast strike and splash mudflats, ponds, creeks, and emergent vegetation. of an egret’s bill can cause a wealth of Wetland life thrived, structured and fueled by Giacomini potential prey to dart and hide, making complicated patterns of tidal inundation and A Wetlands them temporarily unavailable to other predators. irregular pulses of runoff from a watershed that restoration Herons and egrets often overcome this fact by covers much of Marin County. The extravagant area, looking hunting in groups: prey that are busy fleeing flow of energy and nutrients through the system northwest, with from one forager are more easily caught by sustained a magnificent richness of estuarine newly introduced another. Nonetheless, prey concentrations fade life—but one that we can currently only imagine. tidewater quickly, forcing egrets to search for new feeding ﬂooding into the opportunities in the surrounding landscape. Loss of a wetland treasure project area. When an area of intensive human use is In the 1800s, settlers came to western Marin ACR’s Olema returned to nature, processes like this drive the County, where they built ranches and dairy farms Marsh and assembly and arrangement of plants and animals. on the productive coastal prairies and logged the Levee Road are As new life appears, it coalesces into patches Douglas-fir and redwood forests along Inverness visible in the that swell, subside, shift, and intermingle. Intri- Ridge and in other parts of the Tomales Bay water- foreground.
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Sea Level Rise Adaptation Report Marin Ocean Coast
Marin Ocean Coast Sea Level Rise Adaptation Report Marin County Community Development Agency February 2018 Collaboration: Sea-Level Marin Adaptation Response Team Marin County Community Development Agency February 2018 | Marin County, CA | marinslr.org A Call to Action for West Marin Residents West Marin is abundant with natural resources that are integral to its cultural identify as demonstrated by the long heritage of open space preservation and appreciation. Federal, state and local parklands abutting the Pacific Ocean provide a retreat from the hustle and bustle of Bay Area living. Coastal bluffs, beaches, wetlands, and more draw millions of international visitors for surfing, birding, kayaking, hiking, picnicking and more. Protected ranchlands are stewarded by multi-generation family farming operations which feed the region with milk, cheese, yogurt, butter, ice- cream and other products. Nestled within these vast swaths of open space are small but mighty communities that serve as both visitor hubs and homes to residents who cherish and value the unique sense of place. Climate change presents unprecedented threats to West Marin. Wetlands and beaches could be drowned with rising waters, and native plants and animal populations could plummet from changes in temperature and precipitation, ocean acidification, invasive species, and more. Coastal flooding and erosion threaten homes, roads, and utilities that are critical to the long- term sustainability of West Marin. Spearheaded by the Marin County Community Development Agency in 2014, Collaboration: Sea Level Rise Adaptation Response Team (C-SMART) is a partnership based community planning approach to solve some of these challenges. The Marin Ocean Coast Sea Level Rise Vulnerability Assessment analyzed the vulnerabilities of natural and built assets from near- to long-term combined sea level rise and storm scenarios.
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Bolinas Lagoon Ecosystem Restoration Feasibility Project
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Technical Memo
Memo Bolinas Lagoon South End Living Shorelines Project AECOM 300 Lakeside Drive Suite 400 Oakland CA 94612 aecom.com Project name: Bolinas Lagoon South End Living Shorelines Project To: Project ref: Kate Bimrose 60585015 Greater Farallones Association From: Justin Vandever, PE CC: Sarah Kassem, PE Maria Brown Greater Farallones National Marine Sanctuary Date: Wendy Kordesch, Ph.D. May 31, 2019 Greater Farallones Association Memorandum Subject: Bolinas Lagoon South End Living Shorelines Project Pre-Feasibility Study 1 Introduction 1.1 Background Bolinas Lagoon is a biologically rich 1,100 acre tidal estuary on the California coast in west Marin County. The lagoon is situated along the San Andreas Fault and enclosed by a curving sand spit along its southern shoreline. The lagoon is a designated Wetland of International Importance due to its location along the Pacific Flyway and its unique habitats. The lagoon is part of the Greater Farallones National Marine Sanctuary (GFNMS) and provides a diverse mix of channel, mudflat, marsh, and riparian habitat for many shorebirds, waterfowl, fish, marine mammals, invertebrates, and special status plants and animals. The lagoon’s long history of human impacts is described in the Bolinas Lagoon Ecosystem Restoration Project (BLERP) Recommendations for Restoration and Management report (GFNMS 2008). Historical logging, farming, grazing, land use changes, lagoon dredging and fill, channelization of creeks, road construction, and hardening of the lagoon edge have led to degradation of natural hydrologic and geomorphic processes. These changes also affected patterns of sedimentation in the lagoon and disconnected estuarine and marsh habitats with riverine corridors and adjacent upland areas. Hardening of the shoreline has impacted tidal-terrestrial transition zones which limits the ability of the lagoon and its tidal habitats to expand landward and migrate upslope in response to sea level rise.
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Geology at Point Reyes National Seashore and Vicinity, California: a Guide to San Andreas Fault Zone and the Point Reyes Peninsula
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ACR Bulletin Fall 2012
AUDUBON CA NYON RA N C H Number 51 BULLETIN Fall 2012 INS I DE TH I S 50T H ANN I VE R S ar Y ISSUE TH A NKS FO R 50 YE ar S ACR HI S T O R Y HI GHL I GH T S HOW Bir DS SA VED Mari N Tri BU T E T O OU R BENEF act O R S PHO T OS , EVEN T S A ND M O R E Celebrating 50 Years Page 2 Audubon Canyon Ranch Celebrating 50 Years www.egret.org Leading the Environmental Community TH A NKS FO R 50 GR E at YE ar S by J. Scott Feierabend and Bryant Hichwa As we celebrate Audubon Canyon Leading environmental change shores of Tomales Bay in Marin Ranch’s 50th anniversary, we reflect on Because of the financial contribu- County to the wildlands of the remarkable accomplishments of this tions of our supporters and the tireless the Mayacamas Mountains in organization—and we thank and honor dedication of our volunteers, ACR is an northern and eastern Sonoma those who made these achievements enduring leader in the environmental County. possible . you! movement of the Bay Area: As we look to the past and all that The timeline in this Bulletin traces • Our science programs have we have accomplished together, we our collective journey through the past resulted in significant conservation must also look to the future and all that five decades. It is a remarkable story of gains for wetlands and other we aspire to achieve.
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Management Framework for Protection of the Heronry at Martin Griffin Preserve
Management framework for protection of the heronry at Martin Griffin Preserve: An assessment and response to the 2013 decline in Great Egret nesting in Picher Canyon Sarah A. Millus, John P. Kelly and T. Emiko Condeso Cypress Grove Research Center Audubon Canyon Ranch P.O. Box 808, Marshall, CA 94940 E-mail: [email protected] ACR Technical Report 67-1-3 © September 2013, Audubon Canyon Ranch Cypress Grove Research Center P. O. Box 808, Marshall, CA 94940 Executive Summary This is the final, comprehensive report regarding the 2013 nesting season at the Picher Canyon heronry at Martin Griffin Preserve, Stinson Beach, CA. As background information, the report contains relevant information about Great Egret nesting biology and a summary of the history of Great Egret nesting activity in Picher Canyon. This report also includes the complete evaluation of factors that may have contributed to the 2013 nesting failure, which is identical to a previous report (Millus et al. 2013, An assessment of the 2013 decline in Great Egret nesting in Picher Canyon, ACR Technical Report 67-1-2). Based on this information, we present a general management framework that incorporates the “precautionary principlea” to maximize the potential for colony recovery in the 2014 nesting season. The management framework includes the following key actions: Institute regular discussions involving science staff and Martin Griffin Preserve staff regarding changes in management at Picher Canyon Intensify monitoring of the heronry, including the installation of an infrared video camera Delay the public season until a minimum level of nesting success is observed Close the Henderson Overlook until a minimum level nesting success is observed Modify preserve maintenance activities in the canyon, January-August Eliminate or reduce traffic in the canyon January-August Close the canyon to major events January-August These actions will minimize disturbance and promote conditions that returning herons or egrets may require to initiate new nests next season.
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ACR Bulletin Spring 2013
AUDUBON CANYON RANCH Number 52 BULLETIN Spring 2013 INSIDE THIS ISSUE THE NEXT 50 YEarS FALL FOR OUR NEW PRESERVES CREatiVE LEGacY GiftS WHat INSpirES RANCH GUIDES ArtSY LEttERS frOM KIDS PHOTOS, EVENTS AND MORE 50 Years and Still Gaining Ground Page 2 Audubon Canyon Ranch 50 Years and Still Gaining Ground www.egret.org Bold Plans for ACR’s Success ENVISIONING THE NEXT 50 YEarS by J. Scott Feierabend and Bryant Hichwa Imagine entering the Martin Griffin countless volunteers made Audubon • More opportunities for public Preserve and seeing the iconic West Canyon Ranch a gateway to the natural visitation and enhanced Marin farmhouse sporting a fresh coat world, hundreds of thousands of feet educational experiences of paint, with its doors open wide to have walked the trails on our Marin • Improved interpretative displays welcome visitors to the treasures of the and Sonoma County preserves. and interactive educational preserve. Once inside the farmhouse, During these 50 years, nature and materials you learn about Audubon Canyon seasonal rhythms have weathered and • Reduced carbon emissions Ranch’s rich legacy and conservation worn our buildings and their facilities. and increased energy and leadership, and linger in a new, well- This fall, as our anniversary gift to water conservation stocked and expanded bookstore. the community, ACR will launch an Creating a deeper experience From there, you stroll over to the organization-wide refurbishment Special projects are planned Display Hall to view newly and improvement initiative of for the Martin Griffin Preserve, refreshed exhibits and a unprecedented scope—called the Bouverie Preserve and Cypress “smart” classroom, serving over 50/Fifty Initiative—which Grove Research Center.
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