The Central Arizona–Phoenix Long-Term Ecological Research Project (CAP LTER) is hosting its Thirteenth Annual All Scientists Meeting (Poster Symposium) to discuss current research and promote future research on urban socio-ecological systems. It will be held in the Memorial Union at the Arizona State University Tempe campus on Wednesday, January 12 and Thursday, January 13, 2011. Thursday, January 13th will be the date of the poster presentations. We are particularly interested in posters that present interdisciplinary approaches to understanding urban systems and posters that represent university-community partnerships. We encourage our community partners, faculty, staff and students to participate by presenting posters and attending the symposium. Please submit your abstract electronically by December 3, 2010 to Cindy Zisner. The abstract should be single-spaced, 12-point font size, no more than 250 words in length, and in Word or WordPerfect format (no pdfs please). Final posters will need to be provided electronically for the CAP LTER web site. Posters need not be submitted by the abstract deadline but should be submitted as close to the Symposium as possible. Posters often are sized 3 x 5 ft (h x w), but the primary space consideration will be that the final product fits on a 4 x 8 ft (h x w) tack board. This year, poster presenters will be expected to make short, < 5 minute presentations to the symposium audience before their poster session commences. More details on this will be circulated in advance of the symposium. We award prizes to the best student posters in the symposium. Indicate on your abstract if the lead author is a student. Please provide all of your authors' names and addresses so that these can be included in the program. For more information contact Marcia Nation.