Seed Collection and Germination Strategies for Common Wetland and Coastal Sage Scrub Species in Southern California
نویسندگان
چکیده
منابع مشابه
Coastal Sage Scrub Succession1
Professor of Geography, University of California, Los Angeles, California 90024 USA Abstract: Unlike chaparral, shrubs of coastal sage are capable of continual seedling reproduction. As a result, mixed-aged stands form which show little senescence. Litter turnover is twice as rapid. The more open sage scrub canopy permits persistence of a diverse herb layer into mature communities. Crown sprout...
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1. Restoration of semi-arid shrub ecosystems often requires control of invasive grasses but the effects of these grass-control treatments on native and exotic forbs have not been investigated adequately to assess long-term stability. In southern California, coastal sage scrub (CSS) vegetation is one semi-arid shrub community that has been invaded extensively by both exotic grasses and exotic fo...
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Changes in the distribution and abundance of bird and small mammal species at urban-wildland edges can be caused by different factors. Edges can affect populations directly if animals respond behaviorally to the edge itself or if proximity to edge directly affects demographic vital rates (an ‘‘ecotonal’’ effect). Alternatively, urban edges can indirectly affect populations if edges alter the ch...
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Disturbance is a primary mechanism structuring ecological communities. However, human activity has the potential to alter the frequency and intensity of natural disturbance regimes, with subsequent effects on ecosystem processes. In Southern California, human development has led to increased fire frequency close to urban areas that can form a positive feedback with invasive plant spread. Unders...
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This is a preliminary report on a project to characterize the historic species composition of coastal sage scrub vegetation in southern California using plot data collected between 1929 and 1934 by the USDA Forest Service's Vegetation Type Map (VTM) survey. Records and maps from a large historic data set collected for the VTM survey were converted into a digital database and GIS coverage. Histo...
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ژورنال
عنوان ژورنال: Bulletin, Southern California Academy of Sciences
سال: 2016
ISSN: 0038-3872,2162-4534
DOI: 10.3160/soca-115-01-41-71.1