Misplaced Pages

#259740

35-577: It underlies much of the area from east of Del Mar on the north to the mouth of Mission Valley on the south, and extends north to the Encinitas area. Along the coast, it can be seen from central Torrey Pines State Natural Reserve to Scripps Institution of Oceanography , in La Jolla . In the north near Encinitas, it correlates with the upper Torrey Sandstone . It overlies the Ardath Shale , and underlies

70-542: A bird's nest, caused by disease or other causes. There are two subspecies or varieties . These are said to be distinguished by the following characteristics, as well as possibly differing in the terpenoid (beta- phellandrene , limonene , cineole , etc.) profile. The extant population of Pinus torreyana is restricted to trees growing in a narrow strip along the Southern California coast in San Diego . There

105-528: A few occasions throughout the year and rarely drop below 41 °F (5 °C). The average yearly temperature in Del Mar is approximately 65 °F (18 °C). Del Mar regularly receives heavy marine layer clouds due to its position between two lagoons and bordered to the west by the Pacific Ocean. According to the U.S. Census Bureau , at the 2020 census the population was 3,954. The racial makeup of Del Mar

140-521: A particular number of needles for each pine species; in the Torrey pine there are five needles in each fascicle. Like all pines, it has strobili , structures that function as a flower but look like a small cone, which for the Torrey pine look like a yellow bud in a male strobilus and like a small red cone in a female. Torrey pines are sometimes afflicted with witch's broom (or "gorilla's nest"), an unusually dense cluster of needles that looks somewhat like

175-476: A population of 4,161. The population density was 2,341.9 people per square mile (904.2 people/km ). The racial makeup of Del Mar was 3,912 (94.0%) White , 10 (0.2%) African American , eight (0.2%) Native American , 118 (2.8%) Asian , three (0.1%) Pacific Islander , 25 (0.6%) from other races , and 85 (2.0%) from two or more races. Hispanic or Latino of any race were 175 people (4.2%). There were 2,064 households, with 340 (16.5%) having children under

210-551: A series of infestations of a bark beetle , as well as being stressed by air pollution . There were only a hundred trees surviving in the early 20th century. As of 2016 it is thought by the California Native Plant Society that the population of this species is some 3,000 individuals. In 2011, Aljos Farjon , assessing the conservation status of this species for the IUCN , estimated that the total population of P. torreyana

245-689: Is endemic to the California coastal sage and chaparral ecoregion . The species epithet torreyana is named for John Torrey , an American botanist, after whom the coniferous genus Torreya is also named. Pinus torreyana is a broad, open-crowned pine tree growing to 8–17 meters (26–56 ft) tall in the wild, with 25–30 centimeters (9.8–11.8 in) long leaves ('needles') in groups of five. The cones are stout and heavy, typically 8–15 cm (3.1–5.9 in) long and broad, and contain large, hard-shelled, but edible, pine nuts . Like all pines, its needles are clustered into ' fascicles ' that have

280-430: Is also a population of the variety Pinus torreyana var. insularis in two groves on Santa Rosa Island , a California Channel Island off the coast of Santa Barbara . The presence of Torrey pines along the semi-arid coast of San Diego and Santa Rosa Island (rainfall less than 15 inches per year) is probably a relict population of a much more extensive Ice Age distribution. Coastal fog during spring and summer along

315-422: Is considered a local icon, where it lends its name to Torrey Pines State Natural Reserve , Torrey Pines State Beach , Torrey Pines Golf Course , Torrey Pines High School , and Torrey Pines Gliderport , as well as numerous local roads and businesses (e.g., Torrey Pines Bank, Torrey Pines Property Management Company, Torrey Pines Landscape Company, and Torrey Pines Law Group. ) There is some disagreement about

350-646: Is one of only two locations where the Torrey pine tree naturally occurs. The Torrey pine is the rarest pine in the United States; only two populations of this endangered species exist, in Del Mar and on Santa Rosa Island . The Soledad Valley at the south of Del Mar severs two colony segments. At the southern edge of Del Mar is the Los Peñasquitos Lagoon . To the north is the San Dieguito Lagoon and

385-753: The 77th Assembly District , represented by Democrat Tasha Boerner . In the United States House of Representatives , Del Mar is in California's 49th congressional district , represented by Democrat Mike Levin . Del Mar is served by the Del Mar Union School District , which includes eight K–8 schools. High school education is provided by the San Dieguito Union High School District . The North County Transit District operates their BREEZE bus service. The historic Del Mar station once served passengers on

SECTION 10

#1732855920260

420-609: The Atchison, Topeka and Santa Fe Railway Surf Line and the Amtrak San Diegan intercity service between the early 1900s until its closure in 1995, due to the opening of the new Solana Beach Transit Center two miles north. That station provides Coaster commuter rail and Amtrak's Pacific Surfliner service. This trainline is the second busiest passenger rail corridor in the United States. The railroad tracks were built adjacent to coastal bluffs some 40 feet (12 m) above

455-483: The California Coastal Commission , and residents have opposed the district's plans to install a chain-link fence that would stop pedestrians from crossing the tracks to get to the beach. The district considered this to be a safety issue as trespassers along the right-of-way have been hit by trains. This mile-and-a-half stretch (2.4 km) along the southern half of the city does not have legal access to

490-682: The Friars Formation . Sea level rose and fell often during this period of the Eocene Epoch in geologic history. About 42 million years ago, sea level rose again and more sand was deposited. Compressed and cemented, it makes the rock known as the Scripps Formation. This rock holds up the sea bluffs north of Moonlight Beach . Because the mudstone and siltstone of the Ardath Formation are softer and weaker layers, waves erode it and undermine

525-478: The San Dieguito River , which empties into the Pacific Ocean at Del Mar. The bluffs along Del Mar's south beach are subject to collapse. Properties on the bluffs are subject to the impacts of climate change , such as sea level rise and coastal erosion . The transportation infrastructure is under threat. The city has a climate change adaptation plan which excludes the option of a managed retreat ,

560-492: The poverty line , including 18.6% of those under age 18 and 8.5% of those age 65 or over. The City of Del Mar is governed by a city council of five elected representatives. Each year a new mayor is chosen from among the councilmembers. Tracy Martinez is the mayor in 2023. In the California State Legislature , Del Mar is in the 38th Senate District , represented by Democrat Catherine Blakespear , and in

595-654: The Central Valley. A single tree planted in a suburb of San Diego in the 1940s or 1950s has grown tall and straight, and to a large size, 108 feet (33 m). Shipley Nature Center states it can grow to 148 ft (45 m) in height in cultivation. It is sold by at least ten different plant nurseries in California as of 2020. Pinus torreyana has been considered as a plantation tree for forestry use in Australia , New Zealand and Kenya . In San Diego County it

630-803: The San Diego and Santa Rosa Island coast provides just enough moisture to supplement the fairly low winter rainfall, allowing for survival of the species in the wild habitat zone. The native habitat of Pinus torreyana is coastal sage scrub , a plant community , growing slowly in dry, sandy soil. The root system is extensive. A tiny seedling may quickly send a taproot down 60 centimeters (24 in) seeking moisture and nutrients. A mature tree may have roots extending 75 meters (246 ft). Exposed trees battered by coastal winds are often twisted into beautiful sculptural shapes resembling large bonsai , and rarely exceed 12 m (39 ft) tall. The seeds are eaten by birds and rodents. Like most pine tree species,

665-644: The Sea") is a beach city in San Diego County, California , located on the coast of the Pacific Ocean. Established in 1885 as a seaside resort, the city incorporated in 1959. The population was 3,954 at the 2020 census , down from 4,161 at the 2010 census . The San Diego County Fair is an annual fair held at the Del Mar Fairgrounds . Horse racing is hosted at the Del Mar Racetrack every summer. Del Mar

700-474: The age of 18, and 927 (44.9%) with opposite-sex married couples living together, 114 (5.5%) had a female householder with no husband present, 57 (2.8%) had a male householder with no wife present. There were 124 (6.0%) unmarried opposite-sex partnerships , and 19 (0.9%) same-sex married couples or partnerships . There were 707 households (34.3%) comprising one individual, and 209 (10.1%) comprising one individual 65 years of age or older. The average household size

735-458: The beach for 1.7 miles (2.7 km). Coastal erosion eats away at the bluffs each year. The North County Transit District drove steel beams into the beach at the base of the bluffs in September 2020 to stabilize the face of the bluffs for 20 or 30 years. The city wanted to require the transit agency to cover the shotcrete wall on the bluff with natural soil and native plantings. The city council,

SECTION 20

#1732855920260

770-424: The beach. San Diego Association of Governments (SANDAG) is conducting a $ 3 million study on relocating the rail line farther inland through the city. On August 16, 2020, the California Coastal Commission emphasized the need to move the railroad tracks inland due to the persistent coastal erosion which eats away at the bluff each year. The accelerating rate of sea level rise due to global warming adds urgency to

805-505: The beach. Due to offshore reefs and wave patterns, this section has some of the best surfing in San Diego County. In 2023, the city was out of compliance with the state Housing Element Law. They submitted a housing plan to the state that did not meet guidelines for future housing. They were working with the state to get in compliance, but until they did, they couldn't block new housing projects based on city zoning laws alone. Del Mar

840-466: The issue. A tunnel under Del Mar which would cost more than $ 3 billion is being considered. Torrey pine The Torrey pine ( Pinus torreyana ) is a rare pine species in California , United States. It is a critically endangered species growing only in coastal San Diego County , and on Santa Rosa Island , offshore from Santa Barbara in Santa Barbara County . The Torrey pine

875-523: The moth Gloveria arizonensis have been confirmed to feed on this tree in the wild. Stratification , which is the process of subjecting seeds to (moist) cold, encourages germination in Torrey pine seeds The pine nuts were once eaten by the Kumeyaay tribe of Native American people. Although considered endangered in the wild, Torrey pine is often planted as an ornamental tree around San Diego , coastal and inland southern California, and even

910-569: The population is on the coast and nearby bluff which are vulnerable to sea level rise caused by climate change. In 2019, the city refused to develop a managed retreat strategy for moving infrastructure and population centers from the water. This decision was made against the recommendation of the California Coastal Commission . Instead the city is planning on using other climate change adaptation strategies, such as seawalls and beach nourishment . The Surf Line railroad tracks are adjacent to coastal bluffs some 40 feet (12 m) above

945-482: The seeds have a wing attached to them, but in this species it is papery, breaks off easily, and is entirely non-functional, so this tree is entirely reliant upon animals to disperse its seeds. The scrub jay ( Aphelocoma californica ) is the most important species when it comes to dispersal of the seeds (on the mainland). Scrub jays and perhaps also squirrels are thought to be spreading the species into adjacent parklands from gardens around San Diego. The caterpillars of

980-537: The strategy was recommended by the California Coastal Commission in 2019. According to the United States Census Bureau , the city has a total area of 1.8 square miles (4.7 km ), of which 1.7 square miles (4.4 km ) of it is land and 0.1 square miles (0.26 km ) of it (3.94%) is water. Del Mar's climate is considered mediterranean-subtropical with warm, dry summers and mild, humid winters. Temperatures exceed 85 °F (29 °C) only on

1015-660: The stronger Scripps Formation sandstone above it, as happens with the Del Mar Formations below Torrey Formations. Fossils are present but are less common in the Scripps Formation than in the underlying Ardath Shale. Those it preserves date back to the Eocene Epoch of the Paleogene period , during the Cenozoic Era . Del Mar, California Del Mar ( Spanish pronunciation: [del ˈmaɾ] ; Spanish for "Of

1050-559: The total population of Pinus torreyana . In general, only the populations in Torrey Pines State Natural Reserve and on Santa Rosa Island are deemed to count as the wild population, not the trees planted around San Diego and wider California. In the 1970s it was estimated that the population in the TPSR and on Santa Rosa Island was about 9,000 individuals, but many of these trees have since died due to forest fires , drought and

1085-694: Was 2.02. There were 1,098 families (53.2% of all households); the average family size was 2.57. The population comprised 564 people (13.6%) under the age of 18, 205 people (4.9%) aged 18 to 24, 1,071 people (25.7%) aged 25 to 44, 1,455 people (35.0%) aged 45 to 64, and 866 people (20.8%) who were 65 years of age or older. The median age was 48.6 years. For every 100 females, there were 102.1 males. For every 100 females age 18 and over, there were 101.1 males. There were 2,596 housing units at an average density of 1,461.1 units per square mile (564.1 units/km ), of which 1,113 (53.9%) were owner-occupied, and 951 (46.1%) were occupied by renters. The homeowner vacancy rate

Scripps Formation - Misplaced Pages Continue

1120-522: Was 2.6%; the rental vacancy rate was 7.9%. Of the population, 2,398 people (57.6% of the population) lived in owner-occupied housing units and 1,763 people (42.4%) lived in rental housing units. The 2000 census , reported 4,389 people, 2,178 households, and 1,083 families residing in the city, with an average family size of 2.61. The age distribution was reported as 13.6% under the age of 18, 5.4% from 18 to 24, 33.1% from 25 to 44, 33.8% from 45 to 64, and 14.1% who were 65 years of age or older. The median age

1155-424: Was 3,352 (93.1%) White (alone), 22 (0.1%) Black or African American (alone), 9 (0.002%) American Indian and Alaska Native (alone), 152 (4.2%) Asian (alone), 49 (1.2%) of any other race (alone), and 356 (9.9%) two or more races. Hispanic or Latino of any race were 274 (14.4%). The median household income of Del Mar in 2018-2022 was $ 185,335, in 2022 dollars. The 2010 United States Census reported that Del Mar had

1190-408: Was 44 years. For every 100 females, there were 105.0 males. For every 100 females age 18 and over, there were 105.0 males. The median income for a household in the city was $ 120,001, and the median income for a family was $ 130,270. Males had a median income of $ 81,250 versus $ 70,069 for females. The per capita income for the city was $ 92,425. About 7.8% of families and 8.7% of the population were below

1225-473: Was first settled in the early 1880s by Theodore M. Loop, a railroad official, and his wife Ella. Ella gave the site its name, inspired by Bayard Taylor 's poem "The Fight of Paso del Mar". In 1885, Colonel Jacob Taylor purchased 338 acres (1.37 km ) from Enoch Talbert, with visions of building a seaside resort for the rich and famous. The United States Navy operated a Naval Auxiliary Air Facility for blimps at Del Mar during World War II . Much of

#259740