Non-Native Crayfish Removal from Malibu Creek Watershed

Salmonid Habitat Restoration and Acquisition

Instream Habitat
Project ID724381
Recovery DomainsS. California - S. Central CA Coast
Start Date06/02/2014
End Date05/01/2018
Year2013
StatusCompleted
Last Edited10/21/2021
 
1 - 1

Description    


MRT’s aquatic invasive species removal efforts focused on red swamp crayfish (Procambarus clarkii) but also include mosquito fish (Gambusia affinis), American bullfrogs (Lithobates catesbeianus), largemouth bass (Micropterus salmoides), bullhead catfish (Ameiurus spp.), common carp (Cyprinus carpio), bluegill (Lepomis macrochirus) and green sunfish (Lepomis cyanellus). Over the lifetime of the grant, MRT removed 413,976 invasive crayfish from its project sites; 205,943 from Middle Las Virgenes Creek, 6,853 from Upper Las Virgenes Creek, 171,927 from Medea Creek, and 29,253 from Lindero Creek.



In 2016 MRT successfully eradicated crayfish from upper sections of Las Virgenes Creek upstream of Hwy 101 and subsequent monitoring of these sites maintain project success to date. During biological surveys in summer 2017, MRT detected the presence of the California Red-Legged Frog (Rana draytonii) (“CRLF”) in a 0.5-mile section of Virgenes Creek above Agoura Road (upstream boundary: 34.14935, -118.69867, downstream boundary: 34.13944, -118.70333).



During two weeks in July 2017, MRT conducted a trap efficiency study comparing invasive crayfish and bycatch across 12 trap designs. The cylindrical mesh out-performed the other traps by catching the most crayfish while not catching any tadpoles.



During the grant period, MRT hosted 82 volunteer events, for 1,727 volunteers and 4,292 volunteer hours dedicated to removing aquatic invasive species.

Project Benefit    


Improve spawning and rearing habitat by remving non native species.

Accomplishments

Metric Completed Originally
Proposed
Instream Habitat
  Stream Miles Treated 5.75 30.00

Funding Details

SourceFunds
PCSRF$341,820
State$350,000
Other$268,992
Report Total:$960,812


Project Map



Worksites

7210697    


  • Worksite Identifier: 7210697
  • Start Date:
  • End Date:
Area Description
Malibu Creek watershed - non native cray fish removal

Location Information

  • Basin: Ventura-San Gabriel Coastal
  • Subbasin:
  • Watershed:
  • Subwatershed:
  • State: California
  • Recovery Domain: S. California - S. Central CA Coast
  • Latitude: 34.123405
  • Longitude: -118.631352

ESU

  • Southern California Steelhead DPS

Map

Photos

Metrics

Metrics
  • C.0 Salmonid Habitat Restoration and AcquisitionY (Y/N)
    •      . . C.0.a Habitat restoration and acquisition funding 4,611,682.00
    •      . . C.0.b Length of stream treated/protected 5.75
    •      . . C.0.c
      Project identified in a Plan or Watershed Assessment
      Santa Monica Bay Restoration Commission, 2008, Santa Monica Bay Restoration Plan, Bay Restoration Foundation, Los Angeles, CA
    •      . . C.0.d.1 Project Monitoring (LOV)
    •      . . C.0.d.2 Monitoring Location (LOV)
    •      . . C.4 Instream Habitat ProjectY (Y/N)
      •      . . . . C.4.a Instream Habitat Funding 960,812.00
      •      . . . . C.4.b Total length of instream habitat treated 5.75
      •      . . . . C.4.i.1 Predator/competitor removalY (Y/N)
        •      . . . . . . C.4.i.2
          Predator/competitor name(s)
          Non-native cray fish
        •      . . . . . . C.4.i.3
          Method of predator/competitor removal
          trapping
        •      . . . . . . C.4.i.4 Number of predators/competitors removedcontrolled 237,288
        •      . . . . . . C.4.i.5 Miles of stream treated for predators/competitors 5.75