Quadrat of the Day

Our goal is to make the data from the YFDP available to the broadest possible community of researchers. As our effort is still in its early days, we are focusing our efforts on genuine research collaborations leading to co-authorship in peer reviewed publications. Collaborations that assist us with our existing program of field sampling and analysis are especially valued. Contact PI Jim Lutz to discuss access to data.

The YFDP data are stored on servers at the Smithsonian Center for Tropical Forest Science.

Data Policies

Data requests:
All requests for YFDP data or access to the plot must be in writing. Requests should include the list of people requesting data, the topic and scope and schedule of the research, and the target publications. Prospective investigators should resubmit applications for each substantially different project. Students who desire access to the data should submit their request through their adviser.
Access the YFDP or YFDP data is granted only to the specific people requesting data only for the purpose originally requested and for the time period originally requested. Redistributing or sharing data with anyone not included on the application is not allowed. Some journals (notably Ecological Monographs) now require that all source data be archived in a publically available repository. We will only allow archiving of data at a journal website if we have already publically released the data (generally after the completion of the following census).
Maintaining the Yosemite plot requires enormous field effort and an ongoing financial commitment. We therefore require that the Principal Investigators be included as co-authors on publications produced from research conducted in the YFDP or using YFDP data.
Prior to submission, manuscripts and reports should be sent to the Principal Investigators for review. Once published, copies all publications and reports should be sent to the Principal Investigators to be included in the YFDP library and added to the YFDP web site (if allowed by applicable copyrights).
Publications using the YFDP data should include the citation to the plot establishment paper. Lutz JA, Larson AJ, Swanson ME, Freund JA (2012) Ecological importance of large-diameter trees in a temperate mixed-conifer forest. PLoS ONE (DOI).
Research Policies
We welcome proposals to collect new and different types of data within the YFDP and to build a rich data set for this forest. Our work is conducted under research permits approved annually by the National Park Service. Any field work must either fall within the scope of our existing research permits or must be approved by the National Park Service as well as the Principal Investigators. Because of field logistics, we apply for all of our research permits on an annual cycle, at the end of the year preceding the field work. Any data collection or installation of equipment within the YFDP imposes an overhead on the project and the PIs, and we regret that we don’t have the resources to do specialized field work for affiliated researchers unless projects can pay their own way.

Destructive sampling and manipulative research is not allowed within the YFDP.