San Clemente Island

Ecosystem Overview

The San Clemente Island ecosystem supports 100 documented wildlife species across 91 taxonomic genera. Located in Los Angeles County, California, this area provides critical habitat with diverse natural communities. The location hosts 21 frequently observed species and 19 occasionally documented species, creating a balanced ecosystem with both resident and visiting wildlife. This location ranks #15 for species diversity among 132 Los Angeles County County natural areas, placing it in the 89th percentile for biodiversity.

Biodiversity Highlights

100

Total Species

Documented wildlife species

Genus Diversity

Taxonomic genera represented

Common Species

Frequently observed species

Rare Species

Occasionally documented species

#15

Regional Rank

Out of 132 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#15 of 132 locations

89th percentile for diversity

vs. Pasadena

0% species diversity

Ecosystem Overview

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Biodiversity Highlights

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Species Distribution

Very Common‌

Common‌

Occasional‌

Rare‌

Regional Context

Regional Ranking

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Most Common Species

Showing 20 most frequently observed species out of 100 total documented species.

Cylindropuntia prolifera

Very Common29 obs.

Coccinella californica

Very Common23 obs.

Astragalus miguelensis

San Miguel milk-vetch

Very Common21 obs.

Senecio lyonii

Very Common20 obs.

Rhus integrifolia

lemonadeberry

Very Common18 obs.

Baccharis pilularis

coyotebrush

Common18 obs.

Quercus tomentella

Island Oak

Common17 obs.

Opuntia littoralis

Coastal Prickly-pear

Common16 obs.

Ambrosia chamissonis

beachbur

Common14 obs.

Sanicula arguta

Common14 obs.

Diadasia bituberculata

Common12 obs.

Argiope argentata

orb weavers

Occasional12 obs.

Artemisia californica

California sagebrush

Occasional12 obs.

Lasthenia gracilis

needle goldfields

Occasional11 obs.

Gambelia speciosa

Occasional11 obs.

Achillea millefolium

yarrow, milfoil

Occasional11 obs.

Amblyopappus pusillus

Occasional10 obs.

Viola pedunculata

California golden violet

Rare10 obs.

Uta stansburiana

Side-blotched Lizard

Rare9 obs.

Schistocerca nitens

Vagrant Grasshopper

Rare9 obs.

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Most Common Species

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Want the Complete Field Guide?

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Get Your Personalized Field Guide

Download a professional PDF field guide featuring all the species found in San Clemente Island. Perfect for outdoor adventures, education, and nature exploration.

$6.99

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Regional Comparison

Regional Ranking

100

Species Count

+12%

vs. Regional Average

Compared to 8 nearby locations in Los Angeles County County, California

Nearby Natural Areas

Pasadena

Importance: 0.58

100 species

0% vs. current

Long Beach

Importance: 0.57

100 species

0% vs. current

Santa Monica

Importance: 0.55

100 species

0% vs. current

Burbank

Importance: 0.53

100 species

0% vs. current

Los Angeles County

Importance: 0.53

100 species

0% vs. current

Beverly Hills

Importance: 0.52

15 species

+567% vs. current

Glendale

Importance: 0.52

100 species

0% vs. current

Malibu

Importance: 0.52

100 species

0% vs. current

About This Comparison

These comparisons are based on documented wildlife observations from citizen science data. Locations with higher species counts may have more observation activity, different habitat types, or larger coverage areas. Regional rankings help identify biodiversity hotspots and unique natural areas within Los Angeles County County.

Regional Comparison

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Regional Ranking

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Species Count

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vs. Regional Average

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Nearby Natural Areas

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About This Comparison

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Ecosystem Overview

Biodiversity Highlights

100

Total Species

Documented wildlife species

Genus Diversity

Taxonomic genera represented

Common Species

Frequently observed species

Rare Species

Occasionally documented species

#15

Regional Rank

Out of 132 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#15 of 132 locations

89th percentile for diversity

vs. Pasadena

0% species diversity

Regional Comparison

Regional Ranking

100

Species Count

+12%

vs. Regional Average

Compared to 8 nearby locations in Los Angeles County County, California

Nearby Natural Areas

Pasadena

Importance: 0.58

100 species

0% vs. current

Long Beach

Importance: 0.57

100 species

0% vs. current

Santa Monica

Importance: 0.55

100 species

0% vs. current

Burbank

Importance: 0.53

100 species

0% vs. current

Los Angeles County

Importance: 0.53

100 species

0% vs. current

Beverly Hills

Importance: 0.52

15 species

+567% vs. current

Glendale

Importance: 0.52

100 species

0% vs. current

Malibu

Importance: 0.52

100 species

0% vs. current

About This Comparison

Most Common Species

Showing 20 most frequently observed species out of 100 total documented species.

Cylindropuntia prolifera

Very Common29 obs.

Coccinella californica

Very Common23 obs.

Astragalus miguelensis

San Miguel milk-vetch

Very Common21 obs.

Senecio lyonii

Very Common20 obs.

Rhus integrifolia

lemonadeberry

Very Common18 obs.

Baccharis pilularis

coyotebrush

Common18 obs.

Quercus tomentella

Island Oak

Common17 obs.

Opuntia littoralis

Coastal Prickly-pear

Common16 obs.

Ambrosia chamissonis

beachbur

Common14 obs.

Sanicula arguta

Common14 obs.

Diadasia bituberculata

Common12 obs.

Argiope argentata

orb weavers

Occasional12 obs.

Artemisia californica

California sagebrush

Occasional12 obs.

Lasthenia gracilis

needle goldfields

Occasional11 obs.

Gambelia speciosa

Occasional11 obs.

Achillea millefolium

yarrow, milfoil

Occasional11 obs.

Amblyopappus pusillus

Occasional10 obs.

Viola pedunculata

California golden violet

Rare10 obs.

Uta stansburiana

Side-blotched Lizard

Rare9 obs.

Schistocerca nitens

Vagrant Grasshopper

Rare9 obs.

Want the Complete Field Guide?

Get all 100 species with 3-4 high-quality images each, detailed descriptions, and a downloadable PDF for offline use.

Premium field guide includes identification tips, seasonal patterns, and professional layout optimized for field use.