Arnold

Ecosystem Overview

The Arnold ecosystem supports 19 documented wildlife species across 19 taxonomic genera. Located in Calaveras County, California, this area provides critical habitat with diverse natural communities. The location hosts 4 frequently observed species and 3 occasionally documented species, creating a balanced ecosystem with both resident and visiting wildlife. While Calaveras County nearby has 81% more documented species, Arnold offers unique wildlife observation opportunities. This location ranks #2 for species diversity among 9 Calaveras County County natural areas, placing it in the 78th percentile for biodiversity.

Biodiversity Highlights

Total Species

Documented wildlife species

Genus Diversity

Taxonomic genera represented

Common Species

Frequently observed species

Rare Species

Occasionally documented species

Regional Rank

Out of 9 locations

Species Distribution

Very Common4 species

Common6 species

Occasional6 species

Rare3 species

Regional Context

Regional Ranking

#2 of 9 locations

78th percentile for diversity

vs. Calaveras County

-81% 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 19 total documented species.

Stagmomantis limbata

Very Common1 obs.

Haliaeetus leucocephalus

Bald Eagle

Very Common1 obs.

Corvus corax

common raven

Very Common1 obs.

Phyllotopsis nidulans

Stinking Orange Oyster

Very Common1 obs.

Calocedrus decurrens

Bastard Cedar

Very Common1 obs.

Calochortus monophyllus

Common1 obs.

Collomia grandiflora

large-flowered collomia

Common1 obs.

Chamaebatia foliolosa

mountain misery

Common1 obs.

Achillea millefolium

yarrow, milfoil

Common1 obs.

Anax junius

Green Darner

Common1 obs.

Leptoglossus occidentalis

Western Conifer-Seed Bug

Common1 obs.

Viola lobata

yellow-wood violet

Occasional1 obs.

Lathyrus latifolius

Perennial pea

Occasional1 obs.

Trichocnemis spiculatus

Occasional1 obs.

Tragopogon dubius

Goatsbeard

Occasional1 obs.

Diplacus torreyi

Occasional1 obs.

Rubus parviflorus

Occasional1 obs.

Lysimachia latifolia

broad-leaved starflower

Rare1 obs.

Hirundo rustica

barn swallow

Rare1 obs.

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Most Common Species

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Get Your Personalized Field Guide

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

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Regional Comparison

Regional Ranking

Species Count

+6%

vs. Regional Average

Compared to 8 nearby locations in Calaveras County County, California

Nearby Natural Areas

Calaveras County

Importance: 0.45

100 species

-81% vs. current

San Andreas

Importance: 0.37

2 species

+850% vs. current

Dorrington

Importance: 0.35

5 species

+280% vs. current

Valley Springs

Importance: 0.34

1 species

+1800% vs. current

Avery

Importance: 0.34

12 species

+58% vs. current

Forest Meadows

Importance: 0.34

18 species

+6% vs. current

White Pines Lake

Importance: 0.20

1 species

+1800% vs. current

Angels

Importance: 0.05

7 species

+171% 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 Calaveras 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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Regional Comparison

Regional Ranking

Species Count

+6%

vs. Regional Average

Compared to 8 nearby locations in Calaveras County County, California

Nearby Natural Areas

Calaveras County

Importance: 0.45

100 species

-81% vs. current

San Andreas

Importance: 0.37

2 species

+850% vs. current

Dorrington

Importance: 0.35

5 species

+280% vs. current

Valley Springs

Importance: 0.34

1 species

+1800% vs. current

Avery

Importance: 0.34

12 species

+58% vs. current

Forest Meadows

Importance: 0.34

18 species

+6% vs. current

White Pines Lake

Importance: 0.20

1 species

+1800% vs. current

Angels

Importance: 0.05

7 species

+171% vs. current

About This Comparison

Ecosystem Overview

Biodiversity Highlights

Total Species

Documented wildlife species

Genus Diversity

Taxonomic genera represented

Common Species

Frequently observed species

Rare Species

Occasionally documented species

Regional Rank

Out of 9 locations

Species Distribution

Very Common4 species

Common6 species

Occasional6 species

Rare3 species

Regional Context

Regional Ranking

#2 of 9 locations

78th percentile for diversity

vs. Calaveras County

-81% species diversity

Most Common Species

Showing 20 most frequently observed species out of 19 total documented species.

Stagmomantis limbata

Very Common1 obs.

Haliaeetus leucocephalus

Bald Eagle

Very Common1 obs.

Corvus corax

common raven

Very Common1 obs.

Phyllotopsis nidulans

Stinking Orange Oyster

Very Common1 obs.

Calocedrus decurrens

Bastard Cedar

Very Common1 obs.

Calochortus monophyllus

Common1 obs.

Collomia grandiflora

large-flowered collomia

Common1 obs.

Chamaebatia foliolosa

mountain misery

Common1 obs.

Achillea millefolium

yarrow, milfoil

Common1 obs.

Anax junius

Green Darner

Common1 obs.

Leptoglossus occidentalis

Western Conifer-Seed Bug

Common1 obs.

Viola lobata

yellow-wood violet

Occasional1 obs.

Lathyrus latifolius

Perennial pea

Occasional1 obs.

Trichocnemis spiculatus

Occasional1 obs.

Tragopogon dubius

Goatsbeard

Occasional1 obs.

Diplacus torreyi

Occasional1 obs.

Rubus parviflorus

Occasional1 obs.

Lysimachia latifolia

broad-leaved starflower

Rare1 obs.

Hirundo rustica

barn swallow

Rare1 obs.

Want the Complete Field Guide?

Get all 19 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.