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

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6.0 MONITORING ACTIVITIESCounty, California (see Appendix A – RCA MSHCP Technical Reports – 2. Monitoring ProgramSurvey Results, WRIV Vegetation CNPS Final Report April 2006). The GIS map can be viewedon the CDFG’s BIOS website (http://bios.dfg.ca.gov/).The new vegetation map, which is a finer scale resolution than the 1995 map, allows for betteranalyses of covered species distributions. In addition, the new map utilizes a different method toclassify vegetation types than the previous MSHCP map produced by PSBS and KTU+A (1995).This has resulted in many new vegetation classifications. For example, the “coastal sage scrub”subassociation mapped on the 1995 map consisted of three subassociations: Diegan, Riversidean,and undifferentiated. For coastal sage scrub, the 2005 map consists of 19 vegetation alliances. Acrosswalk comparing the 1995 vegetation classifications to the new 2005 classifications isincluded in the final report and in the GIS map attribute table. A GIS analysis has not been doneto compare the vegetation delineations of the two maps; however, a floristic comparison wasmade based on the acreages of each vegetation type from the GIS map attribute table. Table 21,Floristic Comparison between the 1995 MSHCP Vegetation Map Habitat Classifications and the2005 Vegetation Map Classifications, shows the results of the floristic comparison of the 1995and 2005 crosswalked classifications (Evens and Klein 2006). Note that the acreage of “coastalsage scrub” in the new map is greater and the acreage of “chaparral” is less than in the previousmap. This difference is likely due to the coarser scale of the previous map in differentiatingbetween chaparral and sage scrub vegetation. A GIS analysis would better clarify the differencesin vegetation coverages between the two maps.TABLE 21Floristic Comparison between the 1995 MSHCP Vegetation Map HabitatClassifications and the 2005 Vegetation Map ClassificationsMSHCP Habitat Classifications(Collapsed) 1995 Acres Percent 2005 Acres PercentAgricultural Land 169,348 13.5% 151,999 12.1%Water 12,197 1.0% 21,100 1.7%Developed/Disturbed Land 218,098 17.4% 296,621 23.6%Grasslands 154,024 12.3% 91,219 7.3%Playas, Vernal Pools, and Marshes 10,194 0.8% 4,365 0.3%Coastal Sage Scrub 156,330 12.4% 222,153 17.7%Riversidean Alluvial Fan Scrub 7,937 0.6% 4,665 0.4%Desert Scrub 14,575 1.2% 8,922 0.7%Chaparral 434,622 34.6% 368,173 29.3%Riparian Scrub, Woodland, Forest 15,019 1.2% 21,950 1.7%Woodland and Forests 34,478 2.7% 33,255 2.6%Montane Coniferous Forest 29,884 2.4% 31,633 2.5%Rock Outcrop 0.0% 650 0.0%Totals 1.26 million acres 1.26 million acresPolygon Count 17,004 72,264Source: Evens, Julie M. and Anne N. Klein. 2006. A New Model for Conservation Planning: Vegetation Mapping in WesternRiverside County. Fremontia, 34(2): 11-18, April 2006.Western Riverside County MSHCP October 2006Annual Report (January 1, 2005 through December 31, 2005) 6-7
6.0 MONITORING ACTIVITIES6.4.2 Rare Plant SurveysDuring the inventory phase, the Monitoring Program will inventory the status of all 63 coveredplant species at historic record locations within the Conservation Area. This effort is necessarydue to the varying sources, precision, and ages of the historic records and because there is a needto verify the current status of covered plant species in the Conservation Area. Some recordscannot be verified until land is added to the Conservation Area, and some records may never beverified due to their lack of precision. The Monitoring Program anticipates the detection of new,unrecorded populations of many of the covered plant species. The Monitoring Program willcontinue to verify historic records for covered plant species and survey for new populationsduring the inventory phase.Surveys for 16 covered plant species were conducted in 2005. Chosen plant species wereselected to avoid overlap with a parallel, on-going effort by the University of California-Riverside, Center for Conservation Biology. Surveyors conducted general searches at historiclocations between April and August 2005. If the plant was found, a Relevé survey was conductedaround the point to assess the surrounding habitat conditions. A full description of themethodology and results of the rare plant survey (Rare Plant Survey Report 2005) effort can befound in Appendix A – RCA MSHCP Technical Reports – 2. Monitoring Program SurveyResults.Of the 16 covered plant species surveyed, 11 species were detected at historic locations by theBiological Monitoring Program. These species were Palmer’s grapplinghook, California blackwalnut, long-spined spineflower, California Orcutt grass, San Diego button-celery, Munz’sonion, many-stemmed dudleya, spreading navarretia, Hall’s monardella, Santa Ana Riverwoollystar, and San Jacinto Mountains bedstraw. One additional covered species, lemon lily, wasfound incidentally during surveys for another covered species, and one covered species, SanDiego ambrosia, was detected in the Conservation Area by Center for Natural LandsManagement. Since historic records are difficult to verify in the field, survey results for the 5species not found in 2005 (i.e., intermediate Mariposa lily, Hammitt’s clay-cress, Brand’sphacelia, Wright’s trichocoronis, cliff’s cinquefoil) are not indicative of their status in theConservation Area. The 12 covered plant species detected in 2005 by the Monitoring Programare shown in Figure 15, Covered Plant Species Detected in 2005. The species objectives for SanDiego button-celery were met in 2005.6.4.3 Quino Checkerspot SurveysThe species objectives for Quino checkerspot require annual documentation of the distribution ofthe species across the Conservation Area. In 2005, the Monitoring Program began developingWestern Riverside County MSHCP October 2006Annual Report (January 1, 2005 through December 31, 2005) 6-8
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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 LOSSESWithin
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