Title: Cienega Creek Natural Preserve Non-Native Plant Species Study Project Report
Date: April 2003
Area: Cienega Creek
Purpose: Research
Information reported: Non-native species' description, distribution, feasibility and method of control, and management priorities. Land ownership in areas surrounding CCNP (map)
Format: Text (MS Word), GIS Coverage and Maps (ArcView)
Cost: Call for current pricing
On-line availability: Cienega Creek Natural Preserve Non-Native Plant Species Study Project Report (PDF 1.9 MB)

The purpose of this study was to identify the non-native plant species that have successfully invaded the Cienega Creek Natural Preserve (CCNP) and to suggest management options for these species. Information regarding those non-native species which pose the greatest threat to CCNP was gathered prior to field visits through interviews with local land managers and a literature and internet search. PAG staff conducted field surveys during seven trips to CCNP taking place from September 2001 through October 2002. The study methodology involved focusing on linear features in the landscape as they are known to aid in the distribution of non-native species. Aerial photos or a Magellan GPS unit were used to mark located non-natives and digital and film photos were taken for documentation.

The study results revealed sixteen non-native plant species encountered during the surveys, with grass being the most common growth form. The other species included four herbaceous species and a single woody species. Only five of the identified species were annuals, probably due to their dependency on abundant winter rainfall and the dry winters experienced during the survey period. The feasibility and method of eradication for each of the species was discussed. In addition, management suggestions for the species most likely to be controlled were presented in order of importance.