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Savannah Sparrow

Nature Check

Overview

Nature Check logo

The first ecological health assessment of its kind for the East Bay, this NatureCheck report is a science-based, landscape-scale assessment of the ecological health of native plants and wildlife within East Bay Stewardship Network partner agency lands.


225,000 acres in the Network, roughly 25% of Alameda and Contra Costa counties, habitat for over 200 protected species and 24 plant communities.

17 indicators including fish, amphibians, birds, mammals, and plant communities.

5 participating partners including the East Bay Regional Park District, California State Parks, Contra Costa Water District, East Bay Municipal Utility District, and San Francisco Public Utilities Commission

EBSN Area of Focus

Overall Health Summary

To understand the health of our East Bay ecosystems, EBSN identified key ecological indicator species and communities and assessed their condition. These indicators include fish, amphibians, reptiles, birds, mammals, and plant communities, and were selected because they provide essential ecological function or habitat and can be measured. 

Approximately every 5 years EBSN will re-assess and update the condition and trend of these indicators, and assess how confident we are about the data. The latest findings are summarized below.  For more information on a particular indicator you can click on the name to view the indicator details page. 

Indicator Health Conditions

Click on the bars or numbers below, or select a condition from the dropdown to see related indicators and their health.

Concern
6% merit significant concern (1 out of 18 indicators)
Caution
50% require caution (9 out of 18 indicators)
Good
33% are in good condition (6 out of 18 indicators)
Unknown
11% are unknown or not assessed (2 out of 18 indicators)

Indicator Condition:

Indicator
Condition
Trend
Confidence

Good
Condition

Declining
Trend

Moderate
Confidence

Good
Condition

Unknown
Trend

Low
Confidence

Caution
Condition

Unchanging
Trend

Moderate
Confidence

Significant Concern
Condition

Declining
Trend

Low
Confidence

Caution
Condition

Unchanging
Trend

High
Confidence

Caution
Condition

Unchanging
Trend

High
Confidence

Good
Condition

Unchanging
Trend

Moderate
Confidence

Good
Condition

Unknown
Trend

Low
Confidence

Good
Condition

Unchanging
Trend

Moderate
Confidence

Good
Condition

Declining
Trend

Moderate
Confidence

Caution
Condition

Unchanging
Trend

Low
Confidence

Caution
Condition

Unchanging
Trend

High
Confidence

Unknown
Condition

Unknown
Trend

Low
Confidence

Caution
Condition

Unchanging
Trend

Moderate
Confidence

Caution
Condition

Unchanging
Trend

Moderate
Confidence

Unknown
Condition

Unknown
Trend

Low
Confidence

Caution
Condition

Unchanging
Trend

Low
Confidence

Caution
Condition

Unchanging
Trend

Moderate
Confidence

NatureCheck

NatureCheck: Understanding Wildlife Health on East Bay Lands in Alameda and Contra Costa Counties was inspired by the work of OneTam’s Peak Health report that assessed the ecological health of Mount Tamalpais in the North Bay. The East Bay needed an ecological health assessment of its own that analyzed our own species and habitats and the unique stressors they face. NatureCheck is intended to guide us toward better management by revealing trends that are often only possible to detect with longterm monitoring. For more information on the original NatureCheck report see:

 

Additional Resources