Gresham

Ecosystem Overview

The Gresham ecosystem supports 62 documented wildlife species across 60 taxonomic genera. Located in Multnomah County, Oregon, this area provides critical habitat with diverse natural communities. The location hosts 13 frequently observed species and 12 occasionally documented species, creating a balanced ecosystem with both resident and visiting wildlife. While Multnomah County nearby has 38% more documented species, Gresham offers unique wildlife observation opportunities. This location ranks #4 for species diversity among 21 Multnomah County County natural areas, placing it in the 81th 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 21 locations

Species Distribution

Very Common13 species

Common19 species

Occasional18 species

Rare12 species

Regional Context

Regional Ranking

#4 of 21 locations

81th percentile for diversity

vs. Multnomah County

-38% 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 62 total documented species.

Chamaenerion angustifolium

French-Willow

Very Common2 obs.

Isabella Tiger Moth

Occasional1 obs.

Anthomyia procellaris

Occasional1 obs.

Neacoryphus bicrucis

Occasional1 obs.

Catharus ustulatus

Swainson's Thrush

Occasional1 obs.

Ambystoma gracile

Northwestern Salamander

Occasional1 obs.

Lithobates catesbeianus

Common Bullfrog

Occasional1 obs.

Salticus scenicus

Zebra Jumper

Rare1 obs.

Bassaniana utahensis

Rare1 obs.

Diabrotica undecimpunctata

Spotted Cucumber Beetle

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 Gresham. Perfect for outdoor adventures, education, and nature exploration.

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Regional Comparison

Regional Ranking

Species Count

+158%

vs. Regional Average

Compared to 8 nearby locations in Multnomah County County, Oregon

Nearby Natural Areas

Multnomah County

Importance: 0.45

100 species

-38% vs. current

Oaks Bottom Lake

Importance: 0.35

20 species

+210% vs. current

Crystal Springs Lake

Importance: 0.35

18 species

+244% vs. current

Sandy River

Importance: 0.35

16 species

+288% vs. current

Smith Lake

Importance: 0.35

15 species

+313% vs. current

Bybee Lake

Importance: 0.35

15 species

+313% vs. current

Force Lake

Importance: 0.35

5 species

+1140% vs. current

Mill Pond

Importance: 0.35

3 species

+1967% 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 Multnomah 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

+158%

vs. Regional Average

Compared to 8 nearby locations in Multnomah County County, Oregon

Nearby Natural Areas

Multnomah County

Importance: 0.45

100 species

-38% vs. current

Oaks Bottom Lake

Importance: 0.35

20 species

+210% vs. current

Crystal Springs Lake

Importance: 0.35

18 species

+244% vs. current

Sandy River

Importance: 0.35

16 species

+288% vs. current

Smith Lake

Importance: 0.35

15 species

+313% vs. current

Bybee Lake

Importance: 0.35

15 species

+313% vs. current

Force Lake

Importance: 0.35

5 species

+1140% vs. current

Mill Pond

Importance: 0.35

3 species

+1967% 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 21 locations

Species Distribution

Very Common13 species

Common19 species

Occasional18 species

Rare12 species

Regional Context

Regional Ranking

#4 of 21 locations

81th percentile for diversity

vs. Multnomah County

-38% species diversity

Most Common Species

Showing 20 most frequently observed species out of 62 total documented species.

Chamaenerion angustifolium

French-Willow

Very Common2 obs.

Isabella Tiger Moth

Occasional1 obs.

Anthomyia procellaris

Occasional1 obs.

Neacoryphus bicrucis

Occasional1 obs.

Catharus ustulatus

Swainson's Thrush

Occasional1 obs.

Ambystoma gracile

Northwestern Salamander

Occasional1 obs.

Lithobates catesbeianus

Common Bullfrog

Occasional1 obs.

Salticus scenicus

Zebra Jumper

Rare1 obs.

Bassaniana utahensis

Rare1 obs.

Diabrotica undecimpunctata

Spotted Cucumber Beetle

Rare1 obs.

Want the Complete Field Guide?

Get all 62 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.