San Marcos

Ecosystem Overview

The San Marcos ecosystem supports 100 documented wildlife species across 95 taxonomic genera. Located in Texas, this area provides critical habitat for regional wildlife. 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 #202 for species diversity among 1361 Texas natural areas, placing it in the 85th 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

#202

Regional Rank

Out of 1361 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#202 of 1361 locations

85th percentile for diversity

vs. Texas

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.

Solanum elaeagnifolium

Silverleaf nightshade

Very Common28 obs.

Estigmene acrea

Saltmarsh Caterpillar

Very Common25 obs.

Hyphantria cunea

Autumn Webworm

Very Common20 obs.

Tillandsia recurvata

Small ballmoss

Very Common19 obs.

Pseudemys texana

Texas River Cooter

Very Common18 obs.

Ratibida columnifera

Mexican-hat

Common18 obs.

Eublemma recta

Common18 obs.

Calyptocarpus vialis

straggler daisy

Common16 obs.

Odocoileus virginianus

Key Deer

Common16 obs.

Malvaviscus arboreus

Wax mallow

Common15 obs.

Sciurus niger

Cat Squirrel

Common15 obs.

Anolis carolinensis

Green anole

Occasional14 obs.

Ehretia anacua

sandpaper-tree

Occasional14 obs.

Nyctanassa violacea

Yellow-Crowned Night Heron

Occasional13 obs.

Incilius nebulifer

Coastal Plain Toad

Occasional13 obs.

Verbesina virginica

frostweed

Occasional13 obs.

Diospyros texana

Texas persimmon

Occasional13 obs.

Senna lindheimeriana

Rare13 obs.

Synchlora frondaria

Southern Emerald

Rare12 obs.

Melipotis cellaris

Rare12 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 San Marcos. Perfect for outdoor adventures, education, and nature exploration.

$6.99

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Regional Comparison

Regional Ranking

100

Species Count

+2%

vs. Regional Average

Compared to 8 nearby locations in Texas

Nearby Natural Areas

Texas

Importance: 0.79

100 species

0% vs. current

Houston

Importance: 0.69

100 species

0% vs. current

Austin

Importance: 0.64

100 species

0% vs. current

San Antonio

Importance: 0.58

100 species

0% vs. current

Fort Worth

Importance: 0.57

100 species

0% vs. current

Lubbock

Importance: 0.56

100 species

0% vs. current

El Paso City

Importance: 0.56

100 species

0% vs. current

Amarillo

Importance: 0.56

86 species

+16% 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 Texas.

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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Regional Comparison

Regional Ranking

100

Species Count

+2%

vs. Regional Average

Compared to 8 nearby locations in Texas

Nearby Natural Areas

Texas

Importance: 0.79

100 species

0% vs. current

Houston

Importance: 0.69

100 species

0% vs. current

Austin

Importance: 0.64

100 species

0% vs. current

San Antonio

Importance: 0.58

100 species

0% vs. current

Fort Worth

Importance: 0.57

100 species

0% vs. current

Lubbock

Importance: 0.56

100 species

0% vs. current

El Paso City

Importance: 0.56

100 species

0% vs. current

Amarillo

Importance: 0.56

86 species

+16% vs. current

About This Comparison

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

#202

Regional Rank

Out of 1361 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#202 of 1361 locations

85th percentile for diversity

vs. Texas

0% species diversity

Most Common Species

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

Solanum elaeagnifolium

Silverleaf nightshade

Very Common28 obs.

Estigmene acrea

Saltmarsh Caterpillar

Very Common25 obs.

Hyphantria cunea

Autumn Webworm

Very Common20 obs.

Tillandsia recurvata

Small ballmoss

Very Common19 obs.

Pseudemys texana

Texas River Cooter

Very Common18 obs.

Ratibida columnifera

Mexican-hat

Common18 obs.

Eublemma recta

Common18 obs.

Calyptocarpus vialis

straggler daisy

Common16 obs.

Odocoileus virginianus

Key Deer

Common16 obs.

Malvaviscus arboreus

Wax mallow

Common15 obs.

Sciurus niger

Cat Squirrel

Common15 obs.

Anolis carolinensis

Green anole

Occasional14 obs.

Ehretia anacua

sandpaper-tree

Occasional14 obs.

Nyctanassa violacea

Yellow-Crowned Night Heron

Occasional13 obs.

Incilius nebulifer

Coastal Plain Toad

Occasional13 obs.

Verbesina virginica

frostweed

Occasional13 obs.

Diospyros texana

Texas persimmon

Occasional13 obs.

Senna lindheimeriana

Rare13 obs.

Synchlora frondaria

Southern Emerald

Rare12 obs.

Melipotis cellaris

Rare12 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.