Santa Cruz Island Reserve

14 Feb, 04 AM - 17 Feb, 07 AM

This project's aim is to gather a mechanistic understanding of why native plants can and can not reestablish within alien annual grasslands. Specifically I am asking how Eriogonum grande and Corepsis giganteum seedlings interact with grass seedlings (via competition) and grass litter from the previous year (via light reduction). I currently have plots at two sites: Centinela and Pelican Harbor. At both of these sites, I have established 32 .25m x .25m plots along a transect that runs approximately 1m away from adult stands of Eriogonum grande. These plots recieve one of the following manipulations: (1) no manipulation (control), (2) alien grass seedling removal, (3) alien grass litter removal, and (4) alien grass seedling and litter removal. I also have 32 .25m x .25m plots situated with in the adult populations which receive the same four manipulations. By comparing plots within adult populations and outside of adult populations I can use seedfall rate as a covariate in my data to ask how important propogule pressure is to native plant reestablishment. In addition, at the Pelican Harbor site, I have a similar experiment set up for Coreopsis. The purpose of this trip is to maintain plot manipulations (i.e., pull grass seedlings) and to count seedlings of target native species.

Visit #1040 @Santa Cruz Island Reserve

Approved

Under Project # 888 | Research

University of California Los Angeles - Organismic Biology, Ecology, and Evolution

professional - USGS Pacific Island Ecosystems Research Center

Reservation Members(s)

Stephanie Yelenik Feb 14 - 17, 2003 (4 days)

Reserve Resources(s) | Create Invoice

Dorm 1 Feb 14 - 17, 2003
Pickup Truck 1 Feb 14 - 17, 2003