Aquatic Species Assessment Tool (ASAT)

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Protect The Best 
Reconnect Habitat 
Integrate Fish & Working Lands 
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Restore Estuaries 
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Aquatic Species Assessment Tool (ASAT)

Home | Key Initiatives | Restore Estuaries | Aquatic Species Assessment Tool (ASAT)
Protect The Best  Reconnect Habitat  Integrate Fish & Working Lands  Steward Source Water Areas  Restore Estuaries 
 
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Project Goal:

The Aquatic Species Assessment Tool (ASAT) will provide an integrated quantitative framework for assessing the impact of management actions on salmonids and other sensitive listed fish species that depend on the estuary for their lifecycle.


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Project Stages

Planning

Conceptual Design

Implementation

Completion

Estimated Completion Date:
2023

Region:

North Coast South Coast Bay Area

Project Funders

Wildlife Conservation Board
Tides Foundation
Keefe Foundation
Resources Legacy Fund
Orange County Community Foundation

Fish Affected:

Southern Oregon/Northern California Coast Coho Salmon
Central California Coast Coho Salmon
Coastal Cutthroat Trout
Chinook Salmon
Northern California Summer Steelhead
Northern California Winter Steelhead
Southern Steelhead

Threats:

Estuary Alteration

Estuary Alteration

Project Description

CalTrout's Restore Estuaries initiative includes an inter-regional collaboration among the North Coast, Bay Area, and San Diego staff called the Aquatic Species Assessment Tool (ASAT).

Working with an experienced technical advisory committee, habitat modelers at CSU Monterey Bay, and food web researchers at UC Berkeley, CalTrout is developing an estuary restoration planning tool for managers. The proposed tool provides a species-focused estuary assessment and design tool to enhance biodiversity and sustain ecosystem resilience to the impacts of climate change and sea level rise in estuaries across California. The ASAT tool will allow managers to to identify and help resolve potential habitat trade-offs of different listed fish species based on their physiological requirements in estuaries.

The guidelines and best management practices will provide a useful framework for managers, regulatory agencies, restoration practitioners, and others to understand the seasonal estuarine habitat needs of each species and to help make informed decisions to manage tradeoffs. CalTrout contracted Dr. John Olson’s group at CSU-Monterey Bay to model aquatic species’ abundance in select estuaries to better understand key variables that drive population dynamics in these ecosystems. Dr. Olson and students Michelle Tarian, Mike Biedebach and Caleb Yakel used Random Forest modeling to analyze existing robust data sets in four representative estuaries: Russian River, Redwood Creek, Carmel River, and Suisun Estuaries to understand drivers and trade-offs in different sizes and classes of estuaries. They also generated a prototype interface for the models that let users predict how different scenarios (e.g., increased summer flows or increased temperatures) likely affect the abundances of each species in their estuary of interest. Getting sufficient population data was critical to successful modeling, and will hopefully highlight the need for additional monitoring data to do these sorts of analysis that are fundamental to resource management.

Project Partners:

University of California, Berkeley
California State University at Monterey Bay
Technical Advisory Committee
ASAT end-users

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Smith River Protection

North Coast

Raise awareness of the current threats to the pristine North Fork of the Smith River from international mining corporations.

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Prairie Creek Floodplain Restoration

North Coast

Restore floodplain habitat and create public access. ...

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North Coast Science and Monitoring Program

North Coast

Gain a stronger technical understanding of salmon and steelhead recovery efforts through establishing a research and monitoring program in the South Fork Eel River.

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Floodplain Salmon Habitat Credit Development

Central Valley

Develop on-farm water management practices that benefit native fish species and the aquatic ecosystems on which they depend for use in agriculture conservation incentive programs.

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Flood Infrastructure Retrofits

Central Valley

Retrofit flood infrastructure in the Tisdale and Sutter bypasses to enhance fish passage; improve water use efficiency; create floodplain rearing habitat for endangered salmonids; and increase...

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Nigiri Project

Central Valley

Scientifically demonstrate that productivity created by shallow inundation of floodplains is foundational to supporting self-sustaining populations of fish and wildlife in the Central Valley.

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Searsville Dam Fish Passage

Bay Area

Ensure long-term passage for juvenile and adult steelhead in San Francisquito Creek beyond Searsville Dam on San Francisquito Creek by working with Stanford University, resource agency, non-profit,...

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Fish Food on Floodplain Farm Fields

Central Valley

Bring together farmers, conservationists, universities, and state and federal agencies to demonstrate innovative solutions for reintegrating fish food created in floodplain wetlands back to the river...

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Securing South Bay Stream Flows for Steelhead

Bay Area

Ensure adequate streamflows are returned to key South Bay streams and necessary habitat improvements are completed as expeditiously as possible through a long-standing settlement agreement.

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Bay Area Outreach and Education

Bay Area

Increase outreach overall to youth, members, fly clubs, and others about our efforts in the Bay Area and statewide.

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