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Book Use of Terrestrial Arthropods to Evaluate Coastal Sage Scrub Restoration

Download or read book Use of Terrestrial Arthropods to Evaluate Coastal Sage Scrub Restoration written by Wendy Dunbarr and published by . This book was released on 2016 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Non-native invasive plants threaten native plants in ecosystems through competition for resources, alteration to ecosystem functions and disturbance regimes, and changes to food webs and mutualistic relationships. Decades of intense disturbance and fragmentation of coastal sage scrub in Southern California have led to type conversion from mixed native shrub cover to non-native annual grassland in many places. Restoration efforts have been carried out by various government and private land managers in an effort to preserve existing coastal sage scrub and create additional habitat. Ecological restoration typically focuses on vegetation for both restoration activities and assessments of project outcomes. Additional measures of ecosystem function should be considered when evaluating the progress of restoration projects. Terrestrial arthropods occupy a wide breadth of niches and provide valuable ecosystem services (seed dispersal, x decomposition, food sources for higher trophic levels). They are also sensitive to subtle, small-scale changes in the environment, which makes them more likely to be restored before larger animals. This study compared terrestrial arthropod assemblages along with vegetation characteristics among three types of sites (invaded, restored, native) to evaluate the success of two coastal sage scrub restoration projects within the Santa Monica Mountains National Recreation Area. Terrestrial arthropod assemblage compositions were successfully restored at both canyons. These results agreed with vegetation results at Cheeseboro Canyon, but contradicted vegetation results at Zuma Canyon. The results of this study indicate that restoration projects at both canyons were successful. The successful restoration of arthropod assemblage compositions despite spatial isolation and vegetative differences of the restored areas supported the Field of Dreams hypothesis that “if you build it, they will come”. The addition of terrestrial arthropod data to the standard practice of vegetation monitoring provided a more thorough evaluation of the status of these restoration projects, and should be used by land managers in the future.

Book General Technical Report IITF

Download or read book General Technical Report IITF written by and published by . This book was released on 1995 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book A Natural History of Coastal Sage Scrub in Southern California

Download or read book A Natural History of Coastal Sage Scrub in Southern California written by Robert S. Taylor and published by . This book was released on 2004 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Wildland Shrubs of the United States and Its Territories

Download or read book Wildland Shrubs of the United States and Its Territories written by and published by . This book was released on 2004 with total page 844 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Choices and Consequences of Habitat Occupancy and Nest Site Selection in Sage Sparrows Amphispiza Belli

Download or read book Choices and Consequences of Habitat Occupancy and Nest Site Selection in Sage Sparrows Amphispiza Belli written by Michael Dean Misenhelter and published by . This book was released on 1998 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Asuntohankinta oy n Hyvink n Hakan 25 vuotishistoriikki

Download or read book Asuntohankinta oy n Hyvink n Hakan 25 vuotishistoriikki written by and published by . This book was released on 1970 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Anthropogenic Disturbance Regimes and Coastal Sage Scrub Recovery

Download or read book Anthropogenic Disturbance Regimes and Coastal Sage Scrub Recovery written by Kyra R. Engelberg and published by . This book was released on 2011 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Coastal sage scrub (CSS) is a unique and highly threatened vegetation community in coastal Southern California and northern Mexico, with 90 percent lost to development, agriculture, and invasive species. Understanding CSS recovery is critical to its survival. This study looks at the long-term effects of grazing and cultivation in southern California by tracking the extent of exotic grassland in two valleys in the Santa Monica Mountains over sixty years. The rates of native shrub return in a grazed valley were compared to those in a cultivated valley. Transects compared physical differences of stable and recovering grassland-shrubland boundaries. Native shrubs returned to the grass valley that was grazed nearly one and one-half times faster than the valley that was cultivated. Cultivation may result in a type conversion of CSS to a new steady state of exotic annual grassland. The field transects showed that stable and recovering boundaries had different physical characteristics.

Book Invasive Species Impacts on Coastal Sage Scrub Recovery

Download or read book Invasive Species Impacts on Coastal Sage Scrub Recovery written by Emily Griffoul and published by . This book was released on 2017 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: Significant resources are invested in the restoration of degraded Coastal Sage Scrub in Southern California to meet conservation goals. Thus, understanding the resilience of these systems is of great importance given their high value intersection with human settlements. The presence of invasive annual species has been suggested to add complexity to ecological restoration efforts by inhibiting the growth of native species, changing fire regimes, and altering water balance. To further understand these ideas, I utilized a long-term experiment testing the effectiveness of "passive" restoration, the removal of non-native species without expensive site preparation or resource-intensive active planting / seeding of native species, which means that the approach could be designed to have widespread positive effects at potentially minimal costs. I found that passive restoration was successful at meeting restoration goals of increasing native shrub cover. Two ecological mechanisms---the establishment of new individuals on the landscape versus the expansion of plant size of existing shrubs---were likely responsible for the variation in patterns of recovery for localities with different initial native shrub cover. These patterns give insight into how to affect change in communities through management intervention. Better formulating a conceptual model of the contemporary dynamics of Coastal Sage Scrub informs decisions on expending limited resources to different intensities of restoration across a complex landscape to maximally impact conservation.

Book Linking Community and Ecosystem Dynamics in Invasion Biology

Download or read book Linking Community and Ecosystem Dynamics in Invasion Biology written by Elizabeth Mary Wolkovich and published by . This book was released on 2009 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Factors Controlling the Form and Location of the Boundary Between Coastal Sage Scrub and Grassland in Southern California

Download or read book Factors Controlling the Form and Location of the Boundary Between Coastal Sage Scrub and Grassland in Southern California written by Elizabeth Ruth Hobbs and published by . This book was released on 1983 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt: