TORREY Layout.Pmd

Total Page:16

File Type:pdf, Size:1020Kb

TORREY Layout.Pmd Our Mission The mission of the California Department of isit Torrey Pines...painted Torrey Pines Parks and Recreation is to provide for the “ V State Reserve health, inspiration and education of the cliffs and rugged canyons... people of California by helping to preserve green groves and flowered and State Beach the state’s extraordinary biological diversity, protecting its most valued natural and hillside...the wonderful cultural resources, and creating opportunities for high-quality outdoor recreation. panorama of mountains... the sweeping shoreline and the blue sea...will continue in its primitive beauty to California State Parks does not discriminate be admired and loved by against individuals with disabilities. Prior to arrival, visitors with disabilities who need all who visit it. assistance should contact the park at the phone ” number below. To receive this publication in an —Guy Fleming alternate format, write to the Communications Office at the following address. CALIFORNIA STATE PARKS P. O. Box 942896 Sacramento, CA 94296-0001 For information call: 800-777-0369 916-653-6995, outside the U.S. 711, TTY relay service www.parks.ca.gov Torrey Pines SR and SB 12600 N. Torrey Pines Rd. San Diego, CA 92037 (858) 755-2063 (Reserve and mailing address) Cover and intro panel photos by David Rightmer © 2003 California State Parks (rev. 5/2006) Printed on Recycled Paper T orrey Pines State Reserve is a majes- beach invites swimming, surfing and and shade ramadas, which were made of tic wilderness in the middle of an increas- fishing. Low tide—when the red-tinged willow, oak, manzanita, deerweed, tule, ingly urban area. Its fragile environment of bluff is reflected in wet sand—is a good chamise and other local plants. high, broken cliffs and deep ravines over- time to stroll the beach. Across the high- The Kumeyaay were seasonal hunters looking the sea is home to one of the way from the beach, the Los Peñasquitos and gatherers. They gathered roots, world’s rarest pine trees—Pinus torreyana. Marsh Natural Preserve provides a berries, nuts and seeds—some The Torrey pines are believed to be the protected breeding ground for of which were used for remnants of an ancient woodland that once many species of birds and fish. medicinal purposes—and flourished along the southern California PARK HISTORY practiced limited coast, but now they grow naturally only on horticulture. Using Human History this small strip of San Diego coastline and fishhooks and nets, they The Kumeyaay that lived at on Santa Rosa Island. Here, the tree clings caught a variety of sea Torrey Pines traveled in to the face of the crumbling sandstone or animals, and picked up bands of extended families stands tall in sheltered canyons. grunion, shellfish and throughout the coast, Torrey Pines State Beach, adjacent to the mollusks from the mountains and desert foothills. reserve, stretches four and one-half miles beaches. The Kumeyaay Their lands extended from the from Del Mar past Los Peñasquitos Marsh hunted such game as rabbits, Pacific Ocean, south to Enseñada, Natural Preserve to the base of the sand- quail and deer with bows and Mexico, east to the dunes of the Kumeyaay olla (pot) stone cliff at Torrey Pines Mesa. The sandy arrows, throwing sticks and Colorado River, and north through the snares. Today, descendents of the Warner Springs Valley to what is now Kumeyaay still reside in many of the Oceanside. They lived in small dwellings same areas, including San Diego County. Kumeyaay dwelling Sketch by J.W. Audubon, 1849 NATURAL HISTORY THE TORREY PINES Concerned newspaperwoman and The landscape of the reserve is still Early Spanish explorers named the grove philanthropist Ellen Browning Scripps changing. Nearly a million years of rising of trees in the area Punto de Los Arboles, or donated the North and Parry Groves to and falling seas, heavy rains, and erosion “Point of Trees.” The the people of San Diego in by streams and creeks gradually formed trees served as a the hope of protecting the the sandstone terraces that make up the landmark for sailors Torrey pines. In 1916 Guy present reserve. Some geological navigating off the Fleming, a botanist working formations are more than 45 million years coast. In 1850—the for the San Diego Society of old, and some rocks have traveled from as year of California’s Natural History reported far away as central Mexico. The continuous statehood—botanist damage to the trees by motion of the surf creates a changing Charles C. Parry heavy public use. seascape, challenging artists and identified this pine as Miss Scripps got the public photographers to record its latest look. a unique species and interested in protecting the Varying elevations have produced habitats named it after his trees, and in 1921 she and the that range from salt to fresh water, from friend John Torrey, a City Park Commission coastal strand to sage scrub, from salt marsh leading botanist of appointed Mr. Fleming to chaparral to riparian. The area’s mild the time. custodian of Torrey Pines temperatures range from a January low of When Dr. Parry Reserve. By the time of her about 45 degrees to a typical August high of returned to the area Photo courtesy of the Scripps College Archives, Denison Library death in 1932, Ms. Scripps had between 75 and 80 degrees. In June and in 1883, he was Ellen Browning Scripps contributed significantly to the July it is not uncommon for coastal fog to distressed over the establishment of the reserve. last all day, enabling the Torrey pines lack of protection for the trees, and he THE RESERVE to survive in this unlikely urged the San Diego Society of Natural The 2,000-acre reserve’s setting today environment. History to save them from extinction. By contains approximately 300 1885 there was a $100 bounty on anyone endangered and protected species of caught vandalizing a Torrey pine tree. native plants. The plant communities Possible later threats included clear- of the reserve and lagoon areas include cutting the trees so the land could be coastal strand, coastal sage scrub, Torrey pine on used for cattle grazing. In 1899 the chaparral, and Torrey woodlands. These coastal bluff San Diego City Council passed vanishing habitats are home to sand an ordinance that set aside verbena and beach primrose in the 369 acres to be used as a coastal strand areas, as well as public park. California sagebrush, California buckwheat, black sage, and coastal barrel cacti in the coastal California. The California quail, brown towhees, sparrows, sage scrub community. The mesas area is home to Nutall’s woodpeckers, Anna’s and other high elevations are host several rare and hummingbirds, ravens and mockingbirds to the chaparral community of endangered are often found. Here brush rabbits and plants, including chamise, species of birds other small rodents are common, with manzanita, ceanothus, California and provides a occasional gray foxes, bobcats, coyotes, scrub oak, toyon and mountain vital stopping or and mule deer. Reptile residents include mahogany. The Torrey woodlands nesting place for rattlesnakes and a variety of other snakes, are defined by the generally poor many migratory and several species of lizards, including soil and arid climate that cause the waterfowl. the endangered horned lizard. trees to have extensive root Portions of the RECREATION systems. The trees take on a reserve may be Trails variety of shapes as dictated by closed at times to • 0.6-mile Guy Fleming Trail in the the elements—dwarfed and allow the natural North Grove offers two scenic gnarled where most exposed to features to overlooks with panoramic views. wind and salty air, or taller and recuperate from Wildflowers brighten the trails. This trail has the greatest variety of more upright in sheltered areas. abuse, overuse or wildflowers, ferns, cacti and pine NATURAL PRESERVES natural disasters. trees in the reserve. Two outstanding areas have been WILDLIFE • 0.4-mile Parry Grove Trail has dramatic designated as Natural Preserves by the The intertidal zones are rich in sea life: ocean views, but most of the mature State Park and limpets, shore crabs and hermit crabs, Torrey pines fell victim to a bark beetle Recreation mussels, barnacles, sea anemones and infestation in the mid-1990s. A con- Commission. Ellen various species of snails and shells. High trolled burn has allowed natural reveg- Browning Scripps above the sea, the bluffs offer excellent etation and spectacular seasonal Natural Preserve is vantage points to watch the annual migra- wildflowers. Steep the area around tion of gray whales. Dolphins, seals, sea stairs form the head Parry Grove and lions and several species of porpoises may of this trail. Guy Fleming trails. be seen year round. • 0.1-mile High Point Los Peñasquitos About two hundred species of birds are Trail offers a 360- Marsh Natural protected at the reserve. Shore birds degree pan- Preserve is one of include brown and American white pelicans, oramic view of the last remaining black-bellied and snowy plovers, several the reserve and ocean. salt marsh areas species of gulls and terns, American avocets, and waterfowl western sandpipers, willets, whimbrels, refuges in sanderlings, great egrets and longbilled Sandstone cliffs southern curlews. Farther inland western scrub jays, Brown pelican • 1.3-mile Broken Hill Trail offers a beautiful view of eroding sandstone, and its north fork leads through Elfin Forest before connecting to Beach Trail near Flat Rock. • 1.5-mile Marsh Trail goes along the southern edge of Los Penasquitos Marsh Natural Preserve. The trailhead is on the east side of North Torrey Pines Road Coastal horned lizard opposite the South Beach parking lot. Trails in the Extension • 0.5-mile Mar Scenic Trail follows the • Information on park programs is available seasonal creek through the extension.
Recommended publications
  • Pinus Sabiniana) in Oregon Frank Callahan PO Box 5531, Central Point, OR 97502
    Discovering Gray Pine (Pinus sabiniana) in Oregon Frank Callahan PO Box 5531, Central Point, OR 97502 “Th e tree is remarkable for its airy, widespread tropical appearance, which suggest a region of palms rather than cool pine woods. Th e sunbeams sift through even the leafi est trees with scarcely any interruption, and the weary, heated traveler fi nds little protection in their shade.” –John Muir (1894) ntil fairly recently, gray pine was believed to be restricted to UCalifornia, where John Muir encountered it. But the fi rst report of it in Oregon dates back to 1831, when David Douglas wrote to the Linnaean Society of his rediscovery of Pinus sabiniana in California. In his letter from San Juan Bautista, Douglas claimed to have collected this pine in 1826 in Oregon while looking for sugar pine (Pinus lambertiana) between the Columbia and Umpqua rivers (Griffin 1962). Unfortunately, Douglas lost most of his fi eld notes and specimens when his canoe overturned in the Santiam River (Harvey 1947). Lacking notes and specimens, he was reluctant to report his original discovery of the new pine in Oregon until he found it again in California (Griffin 1962). Despite the delay in reporting it, Douglas clearly indicated that he had seen this pine before he found it in California, and the Umpqua region has suitable habitat for gray pine. John Strong Newberry1 (1857), naturalist on the 1855 Pacifi c Railroad Survey, described an Oregon distribution for Pinus sabiniana: “It was found by our party in the valleys of the coast ranges as far north as Fort Lane in Oregon.” Fort Lane was on the eastern fl ank of Blackwell Hill (between Central Point and Gold Hill in Jackson County), so his description may also include the Th e lone gray pine at Tolo, near the old Fort Lane site, displays the characteristic architecture of multiple Applegate Valley.
    [Show full text]
  • 5.0 Torrey Pine Forest
    Volume 2C: Goals and Objectives for Vegetation Focus Management Species 5.0 Torrey Pine Forest 5.0 TORREY PINE FOREST 5.1 OVERVIEW OF THE TORREY PINE FOREST VEGETATION COMMUNITY The Torrey pine forest vegetation community has a very limited distribution in the MSPA, occurring almost exclusively in MU7 on 175 acres and with 1 acre in MU6 (SANDAG 2012; Table V2C.5-1, Figure V2C.5-1, or view an online map at: https://portal.sdmmp.com/map_vegetation.php?taxaid=SDMMP_vegcom_8). Distribution of Torrey Pines Forest Vegetation). Over 97% of Torrey pine forest is conserved, primarily at Torrey Pines State Natural Reserve, where 5,394 trees were mapped in 2006 (Franklin and Santos 2011). Torrey pine forest is the only native coastal southern California forest and is the rarest pine in North America (CDPR 2017). The forest is a remnant population from a period over 10,000 years ago when the climate was wetter and pines were more widespread on the southern California coast. Winter to spring precipitation is most important in annual growth (Biondi et al. 1997). This vegetation community is found only at Torrey Pines State Natural Reserve and on Santa Rosa Island (Sproul et al. 2011). Torrey pines occur on rocky sandstone soils immediately adjacent to the coast (Oberbauer et al. 2008). Torrey pine forest is classified as Pinus torreyana Special Stands, similar to an alliance but dominated by a rare, special-status species (Sproul et al. 2011). It is an open forest with trees <15 meters and with coastal sage scrub and chaparral understories. The stands are associated with many different species and Torrey pines are not diagnostic of a specific floristic composition.
    [Show full text]
  • Legal Status of California Monarchs
    The Legal Status of Monarch Butterflies in California International Environmental Law Project 2012 IELP Report on Monarch Legal Status The International Environmental Law Project (IELP) is a legal clinic at Lewis & Clark Law School that works to develop, implement, and enforce international environmental law. It works on a range of issues, including wildlife conservation, climate change, and issues relating to trade and the environment. This report was written by the following people from the Lewis & Clark Law School: Jennifer Amiott, Mikio Hisamatsu, Erica Lyman, Steve Moe, Toby McCartt, Jen Smith, Emily Stein, and Chris Wold. Biological information was reviewed by the following individuals from The Xerces Society for Invertebrate Conservation: Carly Voight, Sarina Jepsen, and Scott Hoffman Black. This report was funded by the Monarch Joint Venture and the Xerces Society for Invertebrate Conservation. For more information, contact: Chris Wold Associate Professor of Law & Director International Environmental Law Project Lewis & Clark Law School 10015 SW Terwilliger Blvd Portland, OR 97219 USA TEL +1-503-768-6734 FX +1-503-768-6671 E-mail: [email protected] Web: law.lclark.edu/org/ielp Copyright © 2012 International Environmental Law Project and the Xerces Society Photo of overwintering monarchs (Danaus plexippus) clustering on a coast redwood (Sequoia sempervirens) on front cover by Carly Voight, The Xerces Society. IELP Report on Monarch Legal Status Table of Contents Executive Summary .........................................................................................................................v I. Introduction .........................................................................................................................1 II. Regulatory Authority of the California Department of Fish and Game ..............................5 III. Protection for Monarchs in California State Parks and on Other State Lands .....................6 A. Management of California State Parks ....................................................................6 1.
    [Show full text]
  • Stuart, Trees & Shrubs
    Excerpted from ©2001 by the Regents of the University of California. All rights reserved. May not be copied or reused without express written permission of the publisher. click here to BUY THIS BOOK INTRODUCTION HOW THE BOOK IS ORGANIZED Conifers and broadleaved trees and shrubs are treated separately in this book. Each group has its own set of keys to genera and species, as well as plant descriptions. Plant descriptions are or- ganized alphabetically by genus and then by species. In a few cases, we have included separate subspecies or varieties. Gen- era in which we include more than one species have short generic descriptions and species keys. Detailed species descrip- tions follow the generic descriptions. A species description in- cludes growth habit, distinctive characteristics, habitat, range (including a map), and remarks. Most species descriptions have an illustration showing leaves and either cones, flowers, or fruits. Illustrations were drawn from fresh specimens with the intent of showing diagnostic characteristics. Plant rarity is based on rankings derived from the California Native Plant Society and federal and state lists (Skinner and Pavlik 1994). Two lists are presented in the appendixes. The first is a list of species grouped by distinctive morphological features. The second is a checklist of trees and shrubs indexed alphabetically by family, genus, species, and common name. CLASSIFICATION To classify is a natural human trait. It is our nature to place ob- jects into similar groups and to place those groups into a hier- 1 TABLE 1 CLASSIFICATION HIERARCHY OF A CONIFER AND A BROADLEAVED TREE Taxonomic rank Conifer Broadleaved tree Kingdom Plantae Plantae Division Pinophyta Magnoliophyta Class Pinopsida Magnoliopsida Order Pinales Sapindales Family Pinaceae Aceraceae Genus Abies Acer Species epithet magnifica glabrum Variety shastensis torreyi Common name Shasta red fir mountain maple archy.
    [Show full text]
  • Directions to Corona Del Mar State Beach
    Directions To Corona Del Mar State Beach Boskier Bertie sometimes happing his intermediators sweet and lark so prominently! Unhardened Lancelot stultifying or deoxidises some catalogues undisputedly, however animating Alden entangle straightly or execrated. Sometimes nastiest Durand overstretches her Puseyism inexactly, but protrusible Wildon force pretentiously or prologuized thoroughly. Access ways of corona del mar beach directions to spend a congressman from aquarium of these routes on the future orders for recreation and displaying fine art equipment rentals are two injured when the Complete a to Beaches in Del Mar LaJollacom. This had a fee spot for bouldering in Newport Beach, so no bridge serves as ever easy each of accessing the beach. It is also important to take terrain into consideration. Check temperatures before you travel and bring sweaters if you got to stay near sunset. This beach to corona mar state beach can resist commenting with opportunities for a tide. Not beaches directions museum of corona mar thoroughbred club team and states at the head of. Beach Club facility in Humacao, with panoramic views and towering palm trees. Located in corona. For the listings, which they have just outside in san diego in this formation will pay for any travel plans are located in? Corona del Mar CA 92625 edu or call 361-69-2122 or 361-69-132 We've clear a. Promontory Point is sampled weekly. Coast to corona beach directions view of state beach. Grant howald park del mar! Sort your beach to corona mar state beach pier. What would definitely take on this post will still tied behind many high school.
    [Show full text]
  • 2020 Pacific Coast Winter Window Survey Results
    2020 Winter Window Survey for Snowy Plovers on U.S. Pacific Coast with 2013-2020 Results for Comparison. Note: blanks indicate no survey was conducted. REGION SITE OWNER 2017 2018 2019 2020 2020 Date Primary Observer(s) Gray's Harbor Copalis Spit State Parks 0 0 0 0 28-Jan C. Sundstrum Conner Creek State Parks 0 0 0 0 28-Jan C. Sundstrum, W. Michaelis Damon Point WDNR 0 0 0 0 30-Jan C. Sundstrum Oyhut Spit WDNR 0 0 0 0 30-Jan C. Sundstrum Ocean Shores to Ocean City 4 10 0 9 28-Jan C. Sundstrum, W. Michaelis County Total 4 10 0 9 Pacific Midway Beach Private, State Parks 22 28 58 66 27-Jan C. Sundstrum, W. Michaelis Graveyard Spit Shoalwater Indian Tribe 0 0 0 0 30-Jan C. Sundstrum, R. Ashley Leadbetter Point NWR USFWS, State Parks 34 3 15 0 11-Feb W. Ritchie South Long Beach Private 6 0 7 0 10-Feb W. Ritchie Benson Beach State Parks 0 0 0 0 20-Jan W. Ritchie County Total 62 31 80 66 Washington Total 66 41 80 75 Clatsop Fort Stevens State Park (Clatsop Spit) ACOE, OPRD 10 19 21 20-Jan T. Pyle, D. Osis DeLaura Beach OPRD No survey Camp Rilea DOD 0 0 0 No survey Sunset Beach OPRD 0 No survey Del Rio Beach OPRD 0 No survey Necanicum Spit OPRD 0 0 0 20-Jan J. Everett, S. Everett Gearhart Beach OPRD 0 No survey Columbia R-Necanicum R. OPRD No survey County Total 0 10 19 21 Tillamook Nehalem Spit OPRD 0 17 26 19-Jan D.
    [Show full text]
  • 4.0 Potential Coastal Receiver Areas
    4.0 POTENTIAL COASTAL RECEIVER AREAS The San Diego shoreline, including the beaches, bluffs, bays, and estuaries, is a significant environmental and recreational resource. It is an integral component of the area’s ecosystem and is interconnected with the nearshore ocean environment, coastal lagoons, wetland habitats, and upstream watersheds. The beaches are also a valuable economic resource and key part of the region’s positive image and overall quality of life. The shoreline consists primarily of narrow beaches backed by steep sea cliffs. In present times, the coastline is erosional except for localized and short-lived accretion due to historic nourishment activities. The beaches and cliffs have been eroding for thousands of years caused by ocean waves and rising sea levels which continue to aggravate this erosion. Episodic and site- specific coastal retreat, such as bluff collapse, is inevitable, although some coastal areas have remained stable for many years. In recent times, this erosion has been accelerated by urban development. The natural supply of sand to the region’s beaches has been significantly diminished by flood control structures, dams, siltation basins, removal of sand and gravel through mining operations, harbor construction, increased wave energy since the late 1970s, and the creation of impervious surfaces associated with urbanization and development. With more development, the region’s beaches will continue to lose more sand and suffer increased erosion, thereby reducing, and possibly eliminating their physical, resource and economic benefits. The State of the Coast Report, San Diego Region (USACE 1991) evaluated the natural and man- made coastal processes within the region. This document stated that during the next 50 years, the San Diego region “…is on a collision course.
    [Show full text]
  • Adopt-A-Beach Packet Final
    The Adopt-A-Beach Program The Adopt-A-Beach Program is a statewide educational program coordinated by the California Coastal Commission. In San Diego County, this program is locally managed by I Love A Clean San Diego (ILACSD). To “adopt” a beach, volunteers agree to clean their beach at least three times over one year (school groups need only to commit to one cleanup). This program provides a unique opportunity for volunteers of all ages to be part of the solution to marine pollution. It’s as easy as 1, 2, 3… Check out the attached list of local beaches you can adopt. ILACSD will help you determine days and times for your cleanups, provide you with supplies and help arrange for trash and recycling pick-up. Recruit friends, co-workers, classmates and rela- tives to get involved in your beach cleanup. The more people you have cleaning, the more debris you can remove from the beach, saving animals from becoming entangled or injured. Clean your beach! Wear comfortable clothes that you don’t mind getting dirty, a hat, sunscreen and closed-toe shoes. Pick up trash & recyclables (e.g. bottles, cans, clean paper). And most importantly, have fun! The Adopt-A-Beach Program By adopting a beach, you will... Reduce ocean pollution Protect marine life Have fun & make a difference Want to learn more? I Love A Clean San Diego offers free presentations to groups adopting a beach. If your group is interested in learning more about your impact on the marine environment, please contact the ILACSD Volunteer Coordinator at (619) 291-0103 ext.
    [Show full text]
  • Conifer Communities of the Santa Cruz Mountains and Interpretive
    UNIVERSITY OF CALIFORNIA, SANTA CRUZ CALIFORNIA CONIFERS: CONIFER COMMUNITIES OF THE SANTA CRUZ MOUNTAINS AND INTERPRETIVE SIGNAGE FOR THE UCSC ARBORETUM AND BOTANIC GARDEN A senior internship project in partial satisfaction of the requirements for the degree of BACHELOR OF ARTS in ENVIRONMENTAL STUDIES by Erika Lougee December 2019 ADVISOR(S): Karen Holl, Environmental Studies; Brett Hall, UCSC Arboretum ABSTRACT: There are 52 species of conifers native to the state of California, 14 of which are endemic to the state, far more than any other state or region of its size. There are eight species of coniferous trees native to the Santa Cruz Mountains, but most people can only name a few. For my senior internship I made a set of ten interpretive signs to be installed in front of California native conifers at the UCSC Arboretum and wrote an associated paper describing the coniferous forests of the Santa Cruz Mountains. Signs were made using the Arboretum’s laser engraver and contain identification and collection information, habitat, associated species, where to see local stands, and a fun fact or two. While the physical signs remain a more accessible, kid-friendly format, the paper, which will be available on the Arboretum website, will be more scientific with more detailed information. The paper will summarize information on each of the eight conifers native to the Santa Cruz Mountains including localized range, ecology, associated species, and topics pertaining to the species in current literature. KEYWORDS: Santa Cruz, California native plants, plant communities, vegetation types, conifers, gymnosperms, environmental interpretation, UCSC Arboretum and Botanic Garden I claim the copyright to this document but give permission for the Environmental Studies department at UCSC to share it with the UCSC community.
    [Show full text]
  • USS Midway Museum Historic Gaslamp Quarter Balboa Park
    Approx. 22 Miles Approx. 28 Miles San Diego Zoo Del Mar Legoland Fairgrounds Safari Park Del Mar Beaches DOG FRIENDLY 56 North Beach 5 Torrey Pines State Natural Reserve Hiking Torrey Pines Golf Course 805 Torrey Pines Gliderport University of California San Diego Birch Aquarium at Scripps Westfield UTC Mall La Jolla Shores La Jolla Cove 52 Village of La Jolla SeaWorld USS Midway Historic Gaslamp Balboa Park & Museum Quarter San Diego Zoo Approx. 12 Miles Approx. 15 Miles Approx. 16 Miles Approx. 16 Miles Fun Things To Do Within Walking Distance Torrey Pines Golf Course (0.5 mi) – Perfect your swing at the world renowned Torrey Pines Golf Course, home to two 18-hole championship courses. This public course has a driving range and is open every day until 30 minutes before dusk. Call our Golf Team at 1-800-991-GOLF (4653) to book your tee time. Torrey Pines State Natural Reserve (0.8 mi) – Hike a trail in this beautiful 2,000-acre coastal state park overlooking the Pacific Ocean. Some trails lead directly to Torrey Pines State Beach. Trail maps available at our Concierge Desk. Torrey Pines Gliderport (1.5 mi) – Visit North America's top paragliding and hang gliding location and try an instructional tandem flight. Please call ahead since all flights are dependent on the wind conditions - (858) 452-9858. Fun Things To Do Just a Short Drive Away La Jolla Playhouse (2 mi) – A not-for-profit, professional theatre at the University of California San Diego. See Concierge for current showings. Birch Aquarium (3 mi) – Experience stunning sea life at Birch Aquarium at Scripps Institute of Oceanography.
    [Show full text]
  • Variation Than Mainland Populations?
    Heredity 78 (1997) 311—327 Received 30Apr11 1996 Do island populations have less genetic variation than mainland populations? R. FRANKHAM* Key Centre for Biodiversity and Bioresources, Macquarie University, Sydney, NSW2109, Australia Islandpopulations are much more prone to extinction than mainland populations. The reasons for this remain controversial. If inbreeding and loss of genetic variation are involved, then genetic variation must be lower on average in island than mainland populations. Published data on levels of genetic variation for allozymes, nuclear DNA markers, mitochondrial DNA, inversions and quantitative characters in island and mainland populations were analysed. A large and highly significant majority of island populations have less allozyme genetic variation than their mainland counterparts (165 of 202 comparisons), the average reduction being 29 per cent. The magnitude of differences was related to dispersal ability. There were related differ- ences for all the other measures. Island endemic species showed lower genetic variation than related mainland species in 34 of 38 cases. The proportionate reduction in genetic variation was significantly greater in island endemic than in nonendemic island populations in mammals and birds, but not in insects. Genetic factors cannot be discounted as a cause of higher extinction rates of island than mainland populations. Keywords:allozymes,conservation, endemic species, extinction, genetic variation, islands. of endemic plant species as threatened on 15 islands. Introduction Human activities have been the major cause of Islandpopulations have a much higher risk of species extinctions on islands in the past 50000 years extinction than mainland populations (Diamond, (Olson, 1989) through over-exploitation, habitat loss 1984; Vitousek, 1988; Flesness, 1989; Case et al., and introduced species.
    [Show full text]
  • TORREYA|VA a Monthly Newsletter for Torrey Pines State Reserve
    TORREYA|VA A monthly newsletter for Torrey Pines State Reserve Dear FellowDocents, It was good to see everyone enjoying themselves at the docent appreciation party. Those of you who could not attend were very much missed. Despite your absence we did manage to make enough noise to keep the regular inhabitants of the park atbay - a few great horned owls remained on guard to make sure we did not step out of bounds. On behalf of all of us I would like to thank the Rangers, Allyn, Bob, Chris and Greg, for U organizing such a splendid Italian feast for us. A hearty thanks also to the park aides who contributed to the overall success of the evening. We do appreciate being appreciated. The Rangers and Docents took this opportunity to honor one of our best loved docents, Rowdy James, for his "boundless devotion and good humor", with which he has maintained the bookstore for so many years. Rowdy has been successfully showing the ropes to Docent Karen Griebe. Hopefully Karen will stay with us as long as Rowdy has! I would like to remind everyone that should you wish to attend Board meetings at 8.00 a.m. on Saturday momings before the general meeting, you are welcome to do so. If you have items that need to be on the agendas, of either the Board meeting or the general meeting, please be sure to let me know in advance so that I can allocate the time for them. There is a limited amount of time at the end of each Board and gureral meeting for impromptu items.
    [Show full text]