Anthropogenic trampling affects soil and litter-dwelling invertebrate communities in southern California parks, potentially altering community dynamics and hindering nutrient cycling in coastal oak woodland habitats. I collected meso- and macro-faunal community data from leaf litter and soil in frequently and infrequently trampled areas of six San Diego and three Orange County parks during fall 2011 and spring 2012. I recorded relative compaction, moisture percentage and litter mass then extracted eight soil monoliths at each park (25cm x 25cm x 5cm depth) and the detritus above them. I hypothesized frequently trampled invertebrate communities would show decreased abundance, richness and diversity and altered assemblages compared to infrequently trampled communities. Low impact areas showed higher richness and diversity in the soil layer in fall and leaf litter layer in spring. In the laboratory, I hypothesized Lumbricus terrestris earthworms would be more active, creating more large water-stable soil aggregates in low compaction treatments but found no effect of compaction on soil aggregates.
|Advisor:||Underwood, Dessie L. A.|
|Commitee:||Allen, Bengt J., Snyder, Bruce A.|
|School:||California State University, Long Beach|
|School Location:||United States -- California|
|Source:||MAI 55/05M(E), Masters Abstracts International|
|Subjects:||Ecology, Entomology, Soil sciences|
|Keywords:||California, Coast live oaks, Leaf litter invertebrates, Quercus agrifolia, Soil invertebrates, Trampling|
Copyright in each Dissertation and Thesis is retained by the author. All Rights Reserved
The supplemental file or files you are about to download were provided to ProQuest by the author as part of a
dissertation or thesis. The supplemental files are provided "AS IS" without warranty. ProQuest is not responsible for the
content, format or impact on the supplemental file(s) on our system. in some cases, the file type may be unknown or
may be a .exe file. We recommend caution as you open such files.
Copyright of the original materials contained in the supplemental file is retained by the author and your access to the
supplemental files is subject to the ProQuest Terms and Conditions of use.
Depending on the size of the file(s) you are downloading, the system may take some time to download them. Please be