Bay checkerspot butterfly
Conservation status
Threatened (ESA) [1]
Scientific classification
Kingdom: Animalia Phylum: Arthropoda Class: Insecta Order: Lepidoptera Family: Nymphalidae Genus: Euphydryas Species: E. editha Subspecies: E. e. bayensis
Trinomial name
Euphydryas editha bayensis Sternitsky, 1937 & Dos Passos, 1964

The Bay checkerspot butterfly (Euphydryas editha bayensis) is a federally threatened insect species which is native to the U.S. State of California. Since the 1980s the population of Checkerspots has been in seriously declined. Because this particular species is so well studied and observed the decline was quickly recognized leading to its federally threatened status relatively quickly in 1987.^[2] Recently, researchers have advocated a reclassification for this subspecies of the checkerspot common to western North America, Euphydryas editha. The classification, to Euphydryas editha editha, is for reasons of historical precedence.^[1] Image File history File links No higher resolution available. ... The conservation status of a species is an indicator of the likelihood of that species continuing to survive either in the present day or the future. ... Image File history File links No higher resolution available. ... Threatened species refers to animal and plant species under a serious, but perhaps not imminent, threat of extinction. ... [[Image:{{npov}} {{expert-subject|Law}} The Endangered Species Act (, et seq. ... Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. ... Digimon, the only known animals. ... Subphyla and Classes Subphylum Trilobitomorpha Trilobita - trilobites (extinct) Subphylum Chelicerata Arachnida - spiders,scorpions, etc. ... Orders See taxonomy Insects (Class Insecta) are a major group of arthropods and the most diverse group of animals on the Earth, with over a million described species — more than all other animal groups combined [1]. Insects may be found in nearly all environments on the planet, although only a... Superfamilies Butterflies Hesperioidea Papilionoidea Moths Acanthopteroctetoidea Alucitoidea Axioidea Bombycoidea Calliduloidea Choreutoidea Cossoidea Drepanoidea Epermenioidea Eriocranioidea Galacticoidea Gelechioidea Geometroidea Gracillarioidea Hedyloidea Hepialoidea Heterobathmioidea Hyblaeoidea Immoidea Incurvarioidea Lasiocampoidea Lophocoronoidea Micropterigoidea Mimallonoidea Mnesarchaeoidea Neopseustoidea Nepticuloidea Noctuoidea Palaephatoidea Pterophoroidea Pyraloidea Schreckensteinioidea Sesioidea Simaethistoidea Thyridoidea Tineoidea Tischerioidea Tortricoidea Urodoidea Whalleyanoidea Yponomeutoidea Zygaenoidea The order Lepidoptera... Subfamilies Apaturinae Argynninae Biblidinae Calinaginae Charaxinae Cyrestinae Danainae Heliconiinae Libytheinae Limenitidinae Morphinae Nymphalinae Satyrinae Author: Swainson, 1827 Type species: Nymphalis polychloros (Large Tortoiseshell) Diversity: 633 genera, 5,698 species The Nymphalidae are a family of about 5,000 species of butterflies. ... Trinomial nomenclature is a taxonomic naming system that extends the standard system of binomial nomenclature by adding a third taxon. ...

Description

Evolution

Butterflies first dispersed through North America at a time when South America still touched Africa and Europe was still attached to the northern part of the North American continent. It was this geographic setup that allowed butterflies to spread throughout the world. Butterflies likely descended down an evolutionary tree that followed a path from lamp shells to bryozoans to mollusks to segmented worms and then, eventually, butterflies. The order Lepidoptera may be the most recently evolved of all insect orders, except for fleas.^[3] Subphyla and classes See Classification Brachiopods (from Latin bracchium, arm + New Latin -poda, foot) are a phylum of animals. ... Fossilized Bryozoa, Ordovician limestone, Batavia, Ohio Bryozoans (moss animals) are tiny colonial animals that generally build stony skeletons of calcium carbonate, superficially similar to coral. ... Classes Caudofoveata Aplacophora Polyplacophora Monoplacophora Bivalvia Scaphopoda Gastropoda Cephalopoda † Rostroconchia The mollusks or molluscs are the large and diverse phylum Mollusca, which includes a variety of familiar creatures well-known for their decorative shells or as seafood. ... Classes and subclasses Class Polychaeta (paraphyletic?) Class Clitellata    Oligochaeta - Earthworms and others    Acanthobdellida    Branchiobdellida    Hirudinea - Leeches Class Myzostomida Class Archiannelida (polyphyletic) Class Echiura *Some authors consider the subclasses under Clitellata to be classes The annelids, collectively called Annelida, are a large phylum of animals, comprising the segmented worms, with about... Superfamilies Butterflies Hesperioidea Papilionoidea Moths Acanthopteroctetoidea Alucitoidea Axioidea Bombycoidea Calliduloidea Choreutoidea Cossoidea Drepanoidea Epermenioidea Eriocranioidea Galacticoidea Gelechioidea Geometroidea Gracillarioidea Hedyloidea Hepialoidea Heterobathmioidea Hyblaeoidea Immoidea Incurvarioidea Lasiocampoidea Lophocoronoidea Micropterigoidea Mimallonoidea Mnesarchaeoidea Neopseustoidea Nepticuloidea Noctuoidea Palaephatoidea Pterophoroidea Pyraloidea Schreckensteinioidea Sesioidea Simaethistoidea Thyridoidea Tineoidea Tischerioidea Tortricoidea Urodoidea Whalleyanoidea Yponomeutoidea Zygaenoidea The order Lepidoptera... Adam had em. ...

Appearance

The Bay checkerspot has distinctive markings which give it its common name.

The bay checkerspot butterfly is a medium sized butterfly with a wing span of slightly more than 2 inches. As a member of the family Nymphalinae the checkerspot is part of a group of brush-footed butterflies. The insect's forewings are marked with black bands along the veins of the wing's upper surface. The bands contrast sharply with bright red, yellow and white spots.^[4] The Bay checkerspot differs from other checkerspots. From the LuEsther's checkerspot (E. editha luestherae) by being darker, it also lacks the relatively uninterrupted red band on the outer wing which the LuEsther's checkerspot has. It is not as dark and brighter red and yellow than the Island checkerspot (E. editha insularis), which lives on the Channel Islands and nearby mainland. It is the black banding that gives the Bay checkerspot its unique appearance and its name. The bands give the Bay checkerspot a much more checkered appearance than other subspecies such as the Quino checkerspot (E. editha quino) or the Mono checkerspot (E. editha monoensis)^[5] Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... Tribes Argynnini Genus and Species Junonia J. coenia Anartia Anartia amathea Subfamily of butterflies. ... This article is about the British dependencies, for the islands off Southern California, please see Channel Islands of California. ...

Life cycle

Adult butterflies emerge in early spring. The adults, which live an average of ten days emerge during a six week period from late February to early May. The male Bay checkerspot typically emerges four to eight days before the female. The males have one goal, reproduction. They find and mate with a female immediately upon emerging. The male mates many times while most females mate only once during the flight season. Besides mating the adults spend time foraging for nectar and for the females, laying eggs.

The checkerspot larvae feeds mostly on the dwarf plantain.

^[4] Image File history File links Size of this preview: 400 × 600 pixel Image in higher resolution (512 × 768 pixel, file size: 170 KB, MIME type: image/jpeg) Source:CalPhotos Database Author: T. W. Davies © California Academy of Sciences File history Legend: (cur) = this is the current file, (del) = delete this... Image File history File links Size of this preview: 400 × 600 pixel Image in higher resolution (512 × 768 pixel, file size: 170 KB, MIME type: image/jpeg) Source:CalPhotos Database Author: T. W. Davies © California Academy of Sciences File history Legend: (cur) = this is the current file, (del) = delete this...

The eggs are usually laid in March and April. The adult femaile will lay up to five masses of eggs which contain 2 to 250 eggs each. The eggs are deposited at the base of the dwarf plantain plant or less frequently the owl's clover or paintbrush. The eggs take about ten days to hatch and upon emergence from the eggs the larvae grow for a period of two weeks or more during which they shed their skin up to three times. Any larvae that successfully enters the fourth instar enter a period of diapause that lasts through the entire summer. During diapause they spend time under rocks or within cracks in the soil. When the diapause ends they resume activity, feeding and move to complete their development into adult Bay checkerspot butterflies.^[4] Larvae are the plural of larva, juvenile form of animals with indirect development. ... Embryonic diapause, in mammals is a condition where pre-implantation blastocysts are maintained in a state of dormancy, often due to environmental cues, until such time as the environment improves. ...

Diet

While the larvae are dependent on the host plants, mostly the dwarf plantain for sustinence the adult butterflies live on nectar. They feed on a variety of plants associated with serpentine grasslands. Some of these plants include California goldfields, Desert parsley, scytheleaf onion, false babystars, intermediate fiddleneck and others. Female fecundity is dramatically affected by nectar availability.^[5] Fecundity is the potential reproductive capacity of an organism or population, measured by the number of gametes (e. ...

Habitat

This species of butterfly faces declining habitat which has contributed to its migration onto the list of federally threatened species. Like other endangered and threatened species of butterfly in and around the Bay Area the Checkerspot is faced with rapid human development of areas once considered prime habitat. Development and the proliferation of invasive species, exotic non-natives that naturalize in the area, are two of the three most grave threat to this and several other species of butterfly. The threat to the butterfly that is likely greatest comes from the increasing emission of Nitrogen in California. Lantana Invasion of abandoned citrus plantation; Moshav Sdey Hemed, Israel; May 2, 2006 The term invasive species refers to a subset of those species defined as introduced species or non-indigenous species. ...

Range

The historic range of the Checkerspot included many areas around the San Francisco Bay. Most of the San Francisco peninsula, mountains near San Jose, Oakland hills and several locales around Alameda County were once home to populations of the butterfly. Areas east, west and south of the bay, from Twin Peaks to Mount Diablo in Contra Costa County, all the way south to Hollister, the butterfly occurred. Many of these areas no longer hold the species as development of the area increased throughout the 20th century. Today the only populations known inhabit areas of San Mateo and Santa Clara Counties. Disturbances, specifically the altered regimes of these distrubances (i.e. fire, grazing) have, along with invasive grassland plants, induced decline in the population of the host plants.^[2] San Francisco Bay, San Pablo Bay, and the Golden Gate San Francisco Bay is a shallow, productive estuary through which water draining approximately forty percent of California, flowing in the Sacramento and San Joaquin rivers from the Sierra Nevada mountains, enters the Pacific Ocean. ... Nickname: Capital of Silicon Valley Location of San Jose within Santa Clara County, California. ... Oakland hills is a common informal name for that section of the Berkeley Hills which extends along the eastern side of Oakland, California. ... Alameda County is a suburban county in Californias San Francisco Bay Area. ... The Twin Peaks. ... Mount Diablo State Park is a state park in California, USA. View of Mt. ... Contra Costa County is a suburban county in Californias San Francisco Bay Area. ... A house sitting atop the Calaveras Fault Hollister is the county seat of San Benito County, California. ... Official website: http://www. ... Location of Santa Clara County within California. ...

The current range is much reduced and patchy at that. Of all occurrences of the butterfly known when the species was listed as threatened in 1987, all in San Mateo County have disappeared. The exception is a reintroduction of approximately 400 larvae to Edgewood Park in February of 2007. The species was last observed at San Bruno Mountain in 1985 and at Jasper Ridge Biological Preserve in 1998. All remaining known populations of the butterfly are in Santa Clara County. The U.S. Fish and Wildlife Service recommends that any area of appropriate habitat within the historic range should be considered "potentially occupied."^[4] One site in Santa Clara County that has a large source population, that may number in the hundreds of thousands, is near the City of Morgan Hill on a ridge line currently called Coyote Ridge.

Checkerspot populations at Jasper Ridge Biological Preserve have gone extinct.

In the area of Jasper Ridge Biological Preserve local populations were deemed extinct in 1998. The populations of butterflies at Jasper Ridge had been the subject of intensive study and research at the lead of Stanford biologist Dr. Paul Ehrlich. Ehrlich had studied the Jasper Ridge populations since 1960 and researchers were able to examine 70 years of climate data and conclude that gigantic flucuations in local climate probably hastened the demise of the Jasper Ridge Bay checkerspot populations. Ehrlich contends that prior to Spanish settlement of California the Bay checkerspots were almost certainly ubiquitous in California. It was the inadvertent import of invasive plant species in the hay that settlers fed cattle that brought unnatural competition for the native plants that sustained the Bay checkerspot.^[6] Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... The Jasper Ridge Biological Preserve is a 1200 acre (5 km²) plot of land owned by Stanford University, located on Sand Hill Rd near Interstate 280 in Palo Alto, California. ... The Jasper Ridge Biological Preserve is a 1200 acre (5 km²) plot of land owned by Stanford University, located on Sand Hill Rd near Interstate 280 in Portola Valley, California. ... Paul Ralph Ehrlich (born May 29, 1932 in Philadelphia, Pennsylvania) is a Stanford University professor and a renowned entomologist specializing in Lepidoptera (butterflies). ...

The butterfly and its host plants thrive in areas with serpentine soil, soils derived from the serpentine mineral, and other ultramafic rocks. The habitat has been described as consisting of three general types. Type one is the primary habitat which occurs on native grasslands located upon very large serpentine outcroppings. Type two is secondary or "satellite" habitat "islands" which occur in native grasslands on smaller serpentine outcrops. These satellites are typically generating very robust populations of Bay checkerspots in favorable whether with good habitat conditions. Type three are the tertiary habitats. These areas are where both Bay checkerspot larva and the plants they feed on occur in non serpentine soils with similarities to serpentine derived soil.^[5] Serpentine soils are soils derived from the serpentine mineral, and other ultramafic rocks. ... Serpentine Serpentine is a group of common rock-forming hydrous magnesium iron phyllosilicate ((Mg, Fe)3Si2O5(OH)4) minerals; it may contain minor amounts of other elements including chromium, manganese, cobalt and nickel. ... Ultramafic (or ultrabasic) rocks are igneous rocks with very low silica content (less than 45%), generally >18% MgO, high FeO, low potassium and are composed of usually greater than 90% mafic minerals (dark colored, high magnesium and iron content). ...

The possible reclassification of Euphydryas editha bayensis would indicate a change in range for the Bay checkerspot becaue of several populations of checkerspot butterflies whose subspecific status has been uncertain. If the nomenclature change was accepted it could represent a range extension for the threatened butterfly.^[1]

Host plants

The dwarf plantain, Plantago erecta

The Bay checkerspot depends upon plants in two different genra as a larva. The primary host plant is of the genus Plantago while the secondary host plants occur in the genus Castilleja. Image File history File links Size of this preview: 450 × 600 pixel Image in higher resolution (768 × 1024 pixel, file size: 252 KB, MIME type: image/jpeg) This image is a work of the U.S. Fish and Wildlife Service, taken or made during the course of an employees... Image File history File links Size of this preview: 450 × 600 pixel Image in higher resolution (768 × 1024 pixel, file size: 252 KB, MIME type: image/jpeg) This image is a work of the U.S. Fish and Wildlife Service, taken or made during the course of an employees... Subgenus There are 5 subgenera in Plantago. ... Species About 200 species, including: Castilleja chromosa Castilleja coccinea Castilleja exserta Castilleja indivisa Castilleja miniata Castilleja mutis Castilleja neglecta Castilleja pallida lies i tell u lies! Castilleja is a genus of about 200 species of annual and perennial herbaceous plants native to the west of the Americas from Alaska south...

Plantago erecta

The dwarf plantain P. erecta , is the one of the primary host plants for the Bay checkerspot butterfly in the genus Plantago. In many years the plantain dries up causing the checkerspot larvae to seek a secondary host plant.^[4] The plantain is listed as endangered in New Jersey and Maryland; in Maryland it is known as the slender plantain.

Plantago erecta is native to California and only found in western North America. As the primary host plant for the Bay checkerspot the plantain is an important species for conservation of the butterfly. Known by a host of common names, as many plant and animal species are, its nomenclatures include California plantain, English plantain, Foothill plantain, dotseed plantain, and dwarf plantain. This plantain is typically found in coastal sage scrub, foothill woodland, and chaparral biomes.^[7] Species Musa × paradisiaca A big load of plantains in Masaya, Nicaragua Cooking plantains (pronounced plan-TENZ or plan-TAINZ) are a kind of plantains that are generally used for cooking, as contrasted with the soft, sweet banana varieties (which are sometimes called dessert bananas). ... Limber Pine woodland, Toiyabe Range, central Nevada Biologically, a woodland is a treed area differentiated from a forest. ... Chaparral is a shrubland plant community found primarily in California, USA, that is shaped by a Mediterranean climate (mild, wet winters and hot dry summers) and wildfire. ... In ecology, a biome is a major regional group of distinctive plant and animal communities best adapted to the regions physical natural environment, latitude, elevation, and terrain. ...

Purple Owl's Clover, Castilleja exserta.

Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ...

Castilleja exserta

C. exersta, it is known by a handful of common names,Exserted Indian paintbrush, sometimes Red owl's clover, or Purple Indian paintbrush as well. It is one of two secondary larval host plants of the butterfly that remains edible later in the season and acts as a back up when the dwarf plantain dries up.^[4] The plant can grow up to 16 inches in height. It prefers mesas, slopes and open areas in ponderosa pine forests and poppy fields at elevations from 1,500 to 4,500 feet. The flowers bloom from March to May and are about 1.25 inches long and formed in dense spikes, they are a magenta or purple color on the lower corolla lips and have yellow or white tips. The bract, modified leaves, are a reddish purple and hold 5 to 7 lobes, each about one inch long.^[8] It ranges from middle to southern California, into southern Arizona and northern Mexico.^[9] Toothed bracts on Rhinanthus minor In botany, a bract is a modified or specialized leaf, from the axil of which a flower or flower stalk arises; or a bract may be any leaf associated with an inflorescence. ...

The plant's original classification, Orthocarpus purpurascens, has been shown, after careful study, to have been incorrect. Study showed that it belonged to the lineage of Castilleja.^[9] Species About 200 species, including: Castilleja chromosa Castilleja coccinea Castilleja exserta Castilleja indivisa Castilleja miniata Castilleja mutis Castilleja neglecta Castilleja pallida lies i tell u lies! Castilleja is a genus of about 200 species of annual and perennial herbaceous plants native to the west of the Americas from Alaska south...

Castilleja densiflora

C. densiflora, commonly referred to as purple owl's clover is the second of two secondary larval host plants of the butterfly. Similar to C. exersta, it often remains green later into the spring than the butterfly's primary host plant. The plant is generally between 4 and 12 inches in height and grows in small colonies. Flowers can be observed between April and July. Flowers are pink/purple to white/yellow with five petals with white lobes that form a yellow "beak" and "eye spots" on the lower lip, which resembles the face of an owl. The species can be found in a variety of habitats including: Foothill Woodland, Mixed Evergreen Forest, Northern Coastal Scrub, Chaparral, Foothill Woodland, Yellow Pine Forestis, and native grasslands.

Habitat conservation

The Bay checkerspot butterfly is the subject of a number of conservation programs, both private and public. Some of the more notable projects are headed by the U.S. Fish and Wildlife Service (USFWS) and Stanford University. On Sept. 11, 1984 the USFWS proposed that 8,300 acres in five sites be declared "critical habitat" for the Bay checkerspot. Areas included San Bruno Mountain, Edgewood County Park and its adjacent watershed lands, Redwood City, between the boundary with Woodside, Jasper Ridge and Coyote Ridge in the Morgan Hill zone.^[5] The USFWS logo The United States Fish and Wildlife Service is a unit of the United States Department of the Interior that is dedicated to managing and preserving wildlife. ... The Leland Stanford Junior University, commonly known as Stanford University (or simply Stanford), is a private university located approximately 37 miles (60 kilometers) southeast of San Francisco and approximately 20 miles northwest of San José in an unincorporated area of Santa Clara County. ... San Bruno Mountain lies south of San Francisco, CA in San Mateo County. ... Redwood City is a suburb located on the San Francisco Peninsula in the San Francisco Bay Area of California. ... Woodside (pop. ...

The USFWS has identified several of these areas as core habitat areas, which it considers essential to the survival of the species. These areas include some of those mentioned above and others. Areas along the Coyote Ridge, including Kirby, Metcalf, San Felipe, Silver Creek Hills have been designated "core habitat areas." Eleven hundred acres in the Santa Teresa Hills has been labeled a "potential core area" by the Wildlife Service. The Service also denotes some other areas, near core populations, of good quality, meaning suitable habitat. Tulare Hill is one of those areas and along with the Santa Teresa Hills and Redwood City, is considered a "stepping stone."^[5]

The nitrogen effect

One of the interesting dynamics of conservation of this butterfly is associated with increased nitrogen through air pollution. Increased nitrogen increases the fertility of serpentine soils, soils naturally low in nitrogen. This increased fertility allows invasive plants to thrive and exclude the nectar sources that the Bay checkerspot needs. This is where moderate grazing brings help to the threatened checkerspot. In a large metapopulation south of San Jose the removal of cattle from grasslands where the butterfly habitated led to a significant decrease in the butterfly population. This is because grazing leads to a net export of nitrogen as the cattle are removed for slaughter after eating the plants of the grasslands. Through this, moderate grazing enhances the butterfly's chance for survival.^[10] General Name, Symbol, Number nitrogen, N, 7 Chemical series nonmetals Group, Period, Block 15, 2, p Appearance colorless gas Atomic mass 14. ... Serpentine soils are soils derived from the serpentine mineral, and other ultramafic rocks. ... Grasslands are very generally open and continuous, fairly flat area of grass. ...

Increasing nitrogen emission is a problem facing the delicate balance within the ecosystems that contain the Bay checkerspot in many areas. At Coyote Ridge the problem is well documented by conservation biologist Stuart Weiss. While faced with a declining population of Bay checkerspots at Coyote Ridge, Weiss searched for a causality. He found the link between a combination of pollution from the freeway below the ridge and, again, a cutback in cattle grazing locally. Weiss documented how nitrogen oxide emissions from cars enriched the nutrient poor serpentine soil. This is a prime example of the nitrogen effect explained above. Aside from helping decrease nitrogen the cattle also help to control invasive grasses by eating them. Any question about whether or not nitrogen emissions from cars traversing Highway 101, 110,000 vehicles daily, evaporate when faced with monitoring statistics from Weiss. His monitoring equipment has confirmed that 15 to 20 pounds of nitrogen per acre are deposited on Coyote Ridge annually. Some of the particles stick to the plant and ground and are washed into the soil, still others are directly absorbed by the plants themselves. By contrast, pollution from power plants and vehicles drop only about four to five pounds of nitrogen per acre per year on the Jasper Ridge preserve.^[11] The term nitrogen oxide is a general term and can be used to refer to any of these oxides (oxygen compounds) of nitrogen, or to a mixture of them: Nitric oxide (NO), nitrogen(II) oxide Nitrogen dioxide (NO2) Dinitrogen monoxide (N2O) (Nitrous oxide) Dinitrogen trioxide (N2O3) Dinitrogen tetroxide (N2O4) Dinitrogen... U.S. Highway 101, or U.S. Route 101 (U.S. 101), is a north-south highway that is aligned along the Pacific West Coast of the United States. ...

Global warming

Global warming is predicted by the California Climate Change Center to increase California's mean temperate by 1.5 to 6 degrees Celsius by 2100, with greater variation in rainfall. This will shift the growing seasons of the plants the caterpillars depend on. As of 2007, conservation biologists began formally debating assisted migration -- finding a cooler region to repopulate with the butterfly -- as a method for preserving the species.^[12] Global mean surface temperatures 1850 to 2006 Mean surface temperature anomalies during the period 1995 to 2004 with respect to the average temperatures from 1940 to 1980 Global warming is the observed increase in the average temperature of the Earths atmosphere and oceans in recent decades and the projected... This ecology-related article is a stub. ...

Jasper Ridge

Jasper Ridge Biological Preserve was once home to a population of the threatened checkerspot. That population went extinct in 1998. Ehrlich and his colleagues accumulated a mass of data about the fluctuations of the Bay checkerspot populations at Jasper Ridge than probably any other non-vertebrae known. As such Stanford University has dispatched Ehrlich and others to conduct "Longterm studies of the Bay checkerspot butterfly and feasibility of reintroduction. The professors participating, one each from biology, history, soil science and law are examining the issues at heart in restoring any extinct species or lost habitat. The goal of this study is to help determine whether and how to attempt a reintroduction of Bay checkerspots to Jasper Ridge.^[13] The Jasper Ridge Biological Preserve is a 1200 acre (5 km²) plot of land owned by Stanford University, located on Sand Hill Rd near Interstate 280 in Palo Alto, California. ...

Other goals of the Jasper Ridge study include, analyze the regulatory framework for endangered species and how changes might aid recovery of species, characterize the genetics of research collections and possible donor populations and to look at the historical changes in ownership, management and condition of the serpentine grasslands that the Bay checkerspot calls home.^[13]

Coyote Ridge

This map shows the locations of key Bay checkerspot habitats along Coyote Ridge.

The region known as Coyote Ridge refers to an unnamed ridge in Santa Clara County. A variety of names have been applied to areas along the ridge where known populations of Bay checkerspots have or do currently live. Some of these names include, Morgan Hill, Kirby Canyon, East Coyote Foothils and, of course, Coyote Ridge. The U.S. Fish and Wildlife Service identified four core areas along Coyote Ridge that require attention as Bay checkerspot habitat. They have termed them Kirby, Metcalf, San Felipe and Silver Creek Hills. Image File history File links Size of this preview: 502 × 599 pixel Image in higher resolution (600 × 716 pixel, file size: 47 KB, MIME type: image/jpeg) This work is copyrighted and unlicensed. ... Image File history File links Size of this preview: 502 × 599 pixel Image in higher resolution (600 × 716 pixel, file size: 47 KB, MIME type: image/jpeg) This work is copyrighted and unlicensed. ...

Kirby

Right before the Bay checkerspot was federally listed the USFWS entered into an agreement with Waste Management of California, Inc. and also the city of San Jose. The agreement was made under provisions of the Endangered Species Act, specifically section 7.a.4. The agreement provided for the mitigation and compensation for any take of Bay checkerspots due to any construction and operations at Kirby landfill in Kirby Canyon, along Coyote Ridge. The landfill is located adjacent to the large Kirby population of Bay checkerspots. Key aspects of the agreement include:

• limited impacts to total area, with impacts concentrated in lower quality habitat
• phased landfill use
• resoration of filled areas with appropriate vegetation
• a 15-year lease of 267 acres of high quality habitat for Bay checkerspot conservation
• restoration and management of other Bay checkerspot habitat
• monitoring of Bay checkerspot habitat and populations
• possible acquisition of Bay checkerspot habitat for further protection
• establishment of a trust fund to finance the agreement

Projects at Kirby Canyon were behind the original schedule in the late 1990s. Revegetation efforts were slowed in large part due to lower than expected rates landfill filling. Waste Management fulfilled the ten year duration of the agreement and offered after to fund 50 percent of the agreement for three additional years.^[5]

Metcalf

Metcalf has been designated a "Critical Habitat" area by a 2001 USFWS rule change. The area, known in the rule as the Metcalf Unit, includes 3,351 acres of Santa Clara County. The habitat contains the Metcalf area for Bay checkerspot which one of the four largest habitat areas and three largest current populations of Bay checkerspot. As of spring 2000 the area supported the densest population of Bay checkerspots known. With hundreds of acres of serpentine soils, thousands of Bay checkerspot butterflies occur within the unit, which is considered one of the centers of the subspecies' metapopulation in Santa Clara County. The USFWS Recovery Plan for Serpentine Soils Species put a high priority for conservation of the butterfly and its habitat. Metcalf is adjacent to Kirby to south and San Felipe to east, Silver Creek Hills is to the north and the Tulare Hill Corridor is to the west. This connectivity is crucial for Bay checkerspot dispersal throughout the Coyote Ridge area. The land in the Metcalf area is widely distributed amongst various parties. Portions of it lie within the city of San Jose and on private lands in unincorporated Santa Clara County. Parts of the Santa Clara County Motorcycle Park, Coyote Creek Park and the land of the Santa Clara Valley Water District fall within the Metcalf Unit.^[1] Location of Santa Clara County within California. ...

San Felipe

Primarily on private lands, 998 acres, of land, termed the San Felipe Unit by USFWS, has been declared "Critical Habitat" for the Bay checkerspot butterfly per a 2001 rule. On the land is the San Felipe population area which is one of the four largest habitat areas and three largest current populations of Bay checkerspots. The San Felipe area is considered Santa Clara County's metapopulation of the butterfly. The Recovery Plan, from the USFWS, considered the San Felipe area to be of the highest priority for conservation. Though several hundred acres of serpentine soils occur within the unit and include nectaring and dispesal areas there are no public lands in San Felipe.^[1]

Silver Creek

A new development in the Silver Creek area.

It was a housing and golf course project that spurred the creation of the Silver Creek Butterfly Conservation Area. The homes were built, about 1,500 of them, and the golf course went in on about 1,500 acres in the Silver Creek Valley, east of San Jose. The project resulted in the loss of about 18.5 acres of serpentine habitat for the Bay checkerspot. As compensation the developer, Shea Homes, in 1991, established a permanent 115 acre site for butterfly conservation in the Silver Creek Hills. The company also provided for ten years of monitoring of the preserve. Shea Homes also deposited $100,000 into an account dedicated to regional conservation of the Bay checkerspot, money now managed by USFWS.^[5] Image File history File linksMetadata No higher resolution available. ... Image File history File linksMetadata No higher resolution available. ...

With the Silver Creek Butterfly Conservation Area up and running the area population of Bay checkerspots increased markedly. By 1994 there were tens of thousands of adult butterflies. This population crashed in 1995 and 1996 due to problems implementing necessary management actions. By 1997 no post-diapause larvae were found and only three adults were observed during annual monitoring. Other populations are located on nearby property in the Silver Creek Hills and the nearby San Felipe habitat area.^[5] Embryonic diapause, in mammals is a condition where pre-implantation blastocysts are maintained in a state of dormancy, often due to environmental cues, until such time as the environment improves. ...

Edgewood Park & Natural Preserve

Edgewood Park is located in San Mateo County and provides a small habitat for the Bay checkerspot, one of the few remaining in the state, it is scattered and isolated like much of the remaining serpentine soil habitat areas left for the Bay checkerspot. The park is a 467 acre woodland and grassland preserve located off of Interstate 280. The preserve has hiking opportunites thorughout its serpentine grasslands.^[14]

The preserve was threatened by a proposed golf course development in 1983. A 1993 resolution helped secure the park's future. That year the San Mateo County Board of Supervisors closed the golf course issue when they adopted a resolution that designated Edgewood Park "a scenic natural area where outstanding features as well as significant wildlife habitats are preserved in their present state for the enjoyment, education and well-being of the public." At the same time the county also modified their agreement with Midpeninsula Regional Open Space District, adding a clause to prohibit golf course development and emphasize natural resource preservation and low intensity recreation.^[5] With the exception of a reintroduction in early 2007 of approximately 400 larva, the species was last observed at Edgewood Park in 2002.

San Bruno Mountain

The San Bruno Mountain Habitat Conservation Plan (HCP), the first of its kind in the United States, was adopted in 1983. Currently, it is the only HCP that potentially addresses the Bay checkerspot. The plan covers some 3,400 acres in northern San Mateo County and identifies seven animal species and 44 plant species to be conserved. Among them, the federally endangered Mission blue and the Bay checkerspot butterfly, the Bay checkerspot was not federally listed when the plan was adopted. Thus, this HCP's primary focus is on the two species of butterfly that were federally listed when it was adopted in 1983, the Mission blue butterfly and San Bruno elfin butterfly. The permit for the plan expires on March 31, 2013 and there are currently no provisions in the HCP for incidental take of Bay checkerspots. The Bay checkerspot was lost on San Bruno Mountain around 1986. The impetuses included fires, non native plant species and "natural flucuations. The reintroduction of the Bay checkerspot is one of the goals of the San Bruno HCP.^[5] San Bruno Mountain lies south of San Francisco, CA in San Mateo County. ... Trinomial name Icaricia icarioides missionensis Hovanitz, 1937 The mission blue butterfly, Icaricia icarioides missionensis, is a blue or lycaenid butterfly species that is native to the San Francisco Bay Area of the United States. ... Trinomial name Callophrys mossii bayensis (R. M. Brown, 1969) The San Bruno elfin butterfly (Callophrys mossii bayensis) is a U.S. Federally listed endangered species which inhabits rocky outcrops and cliffs in coastal scrub on the San Francisco peninsula. ... March 31 is the 90th day of the year in the Gregorian Calendar (91st in leap years), with 275 days remaining. ... This article or section does not adequately cite its references or sources. ...

External links

Conservation

• Bay Checkerspot Butterfly, Butterfly Conservation Initiative. [1]
• Coyote Ridge:Treasure of Santa Clara County, Stanford University.
• Edgewood Park & Natural Preserve, San Mateo County. [2]
• Jasper Ridge Biological Preserve, Stanford University. [3]
• Silicon Valley Land Conservancy
• Serpentine grass restoration at Edgewood Park: by Stuart Weiss, Ph. D.
• Midpeninsula Regional Open Space District

Government resources

Legislation

• Endangered Species Act of 1973 (PDF), 48 pages, U.S. Fish and Wildlife Service. [4]. By section.

PDF redirects here. ...

Other documents

• Critical Habitat Survey, (PDF), 3 pages, 2002, California State Association of Counties. [5]
• Federal Rule regarding Critical Habitat, (PDF), 41 pages, Federal Register, April 30, 2001.
• Recovery Plan for Serpentine Soil Species of the San Francisco Bay Area, (PDF), 443 pages, 1998, U.S. Fish and Wildlife Service. [6]
• Trinity Serpentine Soil Survey, Shasta-Trinity National Forest, June 2004, U.S. Forest Service. [7]

PDF is an abbreviation with several meanings: Portable Document Format Post-doctoral fellowship Probability density function There also is an electronic design automation company named PDF Solutions. ... PDF is an abbreviation with several meanings: Portable Document Format Post-doctoral fellowship Probability density function There also is an electronic design automation company named PDF Solutions. ... April 30 is the 120th day of the year in the Gregorian calendar (121st in leap years), with 245 days remaining. ... 2001 (MMI) was a common year starting on Monday of the Gregorian calendar. ... PDF is an abbreviation with several meanings: Portable Document Format Post-doctoral fellowship Probability density function There also is an electronic design automation company named PDF Solutions. ...

News/media

• Critical habitat now includes 23,903 acres within two counties, San Francisco Chronicle, Eric Brazil, May 2, 2001.
• Extinction: It should concern us all, Mother Earth News, Anne and Paul Ehrlich, March/April 1981.
• San Bruno's mounting challenge, San Francisco Chronicle, Paul McHugh, Sept. 19, 2002.

May 2 is the 122nd day of the year in the Gregorian calendar (123rd in leap years). ... 2001 (MMI) was a common year starting on Monday of the Gregorian calendar. ...

Journals

• Climate change hastens extinction, (PDF), 5 pages, PNAS.org, Paul Ehrlich, March 6, 2002.
• Ecological Effects of Nitrogen Deposition in the Western United States, (PDF), 17 pages, BioScience, Mark E. Fenn et. al., April 2003.
• Tropical Butterflies: A Key Model Group that Can be "Completed", (PDF), 4 pages, Lepidoptera News, Paul Ehrlich, June 2001.

PDF is an abbreviation with several meanings: Portable Document Format Post-doctoral fellowship Probability density function There also is an electronic design automation company named PDF Solutions. ... March 6 is the 65th day of the year in the Gregorian Calendar (66th in Leap years). ... For album titles with the same name, see 2002 (album). ... PDF is an abbreviation with several meanings: Portable Document Format Post-doctoral fellowship Probability density function There also is an electronic design automation company named PDF Solutions. ... PDF is an abbreviation with several meanings: Portable Document Format Post-doctoral fellowship Probability density function There also is an electronic design automation company named PDF Solutions. ...

See also

• List of subspecies to Euphydryas editha

This list of subspecies of Euphydryas editha is subject to change as the nomenclature is altered or new subspecies are found. ...

Notes