Annual Report 2005 (62.7MB) - Western Riverside County Regional ...

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Figure 17. Small Mammal Trapping Locations and Species Detected in 2005.Motte Rimrock Reserve"San Jacinto Wildlife Area"Potrero"Conservation AreaCriteria AreaHighwaysRoads" Trapping LocationsSPECIES DETECTEDTRAINING SESSIONSMotte Rimrock Reserve:Kangaroo rat spp., San Diego pocketmouse, San Diego desert woodratSan Jacinto Wildlife Area:Stephens' kangaroo rat, Dulzura kangaroorat, California mouse, San Diego pocketmouse, deer mouse, Los Angeles pocketmousePotrero: Stephens' kangaroo rat,Dulzura kangaroo rat, San Diego pocketmouse, deer mouse, western harvest mouseFOCUSED TRAPPINGPotrero:Dulzura kangaroo rat, Stephens' kangaroorat, San Diego pocket mouse, San Diegodesert woodrat, white footed-mouse spp.,brush mouse, cactus mouse, deer mouse,California vole, harvest mouseSilverado Ranch: Dulzura kangaroo rat,Stephens' kangaroo rat, deer mouseSilverado Ranch"0 2.5 5 10 15MilesIWestern Riverside Co. MSHCP Biological Monitoring Program
6.0 MONITORING ACTIVITIES6.4.6 Grasshopper Sparrow SurveysThe species objectives for grasshopper sparrow require occupancy and successful reproductionin proposed Core Areas identified in the MSHCP. In 2005, the Monitoring Program took a twophaseapproach to developing and testing protocols for grasshopper sparrow. The first effort wasto conduct qualitative surveys to determine presence and reproductive status of grasshoppersparrow within the 11 proposed Core Areas (see Figure 18, Grasshopper Sparrow andTricolored Blackbird Detections in 2005). Quantitative surveys using line-distance samplingwere then conducted to determine grasshopper sparrow detection probabilities and densities inpotential habitat within the Core Areas. The 11 Core Areas are defined in the MSHCP speciesobjectives as follows: (1) Prado Basin; (2) Lake Skinner/Diamond Valley Lake/Johnson Rancharea; (3) Lake Mathews-Estelle Mountain; (4) Badlands; (5) Box Springs; (6) Santa RosaPlateau/Tenaja; (7) Kabian Park; (8) Steele Peak; (9) Sycamore Canyon; (10) Potrero; and (11)Mystic Lake/San Jacinto Wildlife Area.Between March and May 2005 the Monitoring Program searched for grasshopper sparrow nestsat 9 of the 11 Core Areas (Prado Basin and Badlands excluded). Fledgling birds were detected bythe Monitoring Program within 3 Core Areas (Santa Rosa Plateau, Lake Matthews-EstelleMountain, and Lake Skinner/Diamond Valley Lake/Johnson Ranch). Surveys along transectsconducted in June 2005 resulted in the detection of grasshopper sparrows at 4 of 10 Core Areassurveyed. Prado Basin was not surveyed by Monitoring Program biologists; however, staff at theOrange County Water District estimated that there were 20 to 30 pairs of grasshopper sparrow atPrado Basin in 2005. A full description of survey methodologies and results can be found inGrasshopper Sparrow (Ammodramus savannarum) Survey Results 2005 in Appendix A – RCAMSHCP Technical Reports – 2. Monitoring Program Survey Results.The species objectives for grasshopper sparrow requires that at least five of seven Core Areassupport 20 grasshopper sparrow pairs with evidence of successful reproduction. In 2005,grasshopper sparrows were found successfully breeding at three proposed Core Areas and thespecies was found occupying a total of seven proposed Core Areas. The only Core Area where atleast 20 pairs of grasshopper sparrows were detected was Lake Skinner/Diamond ValleyLake/Johnson Ranch. The species objectives for grasshopper sparrow are complex (seeMonitoring Section 6.6), and it may take several years of surveying before it is known whetherthe objectives are met.6.4.7 Tricolored Blackbird SurveysThe species objectives for tricolored blackbird require the continued use of and successfulreproduction within at least 1 of 5 Core Areas identified in the MSHCP. In 2005, the MonitoringProgram conducted surveys for tricolored blackbird in suitable habitat within accessible areas ofWestern Riverside County MSHCP October 2006Annual Report (January 1, 2005 through December 31, 2005) 6-14
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Western Riverside CountyRegional Co
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Western Riverside CountyMULTIPLE SP
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TABLE OF CONTENTSSectionPage No.3.4
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TABLE OF CONTENTSSectionPage No.LIS
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EXECUTIVE SUMMARY• Ongoing manage
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EXECUTIVE SUMMARYfunctions as an ea
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EXECUTIVE SUMMARYArea Plan, have be
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1.0 INTRODUCTION1.0 INTRODUCTION1.1
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1.0 INTRODUCTION1.2 Reporting Requi
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1.0 INTRODUCTIONCollection of annua
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Western Riverside County MSHCP Roug
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2.0 HABITAT GAINS AND LOSSESRoughSt
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2.0 HABITAT GAINS AND LOSSESDelhi S
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2.0 HABITAT GAINS AND LOSSESWithin
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2.0 HABITAT GAINS AND LOSSESKey Veg
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2.0 HABITAT GAINS AND LOSSESWithin
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Page 92 and 93: Figure 19. Amphibian Stream Survey
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Page 110 and 111: APPENDIX AADDITIONAL REPORTS AND IN
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