Quadrat of the Day: 10/06/2015
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Dead trees ≥10 cm dbh indicated by a white ‘x’.
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.
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).
The Principal Investigators reserve the right to be included as co-authors on publications produced from research conducted in the YFDP or using YFDP data. An excellent commentary on co-authorship and vegetation databases can be found in: Dengler J, Jansen F, Glöckler F, Peet RK, De Cáceres M, Chytrý M, Ewald J, Oldeland J, Lopez-Gonzalez G, Finckh M, Mucina L, Rodwell JS, Schaminée JHJ, Spencer N (2011) The global index of vegetation-plot databases (GIVD): a new resource for vegetation science. Journal of Vegetation Science 22:582-597 (DOI).
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).
Publication should include an acknowledgement of the support of the University of Washington, the University of Montana, the Center for Tropical Forest Science of the Smithsonian Tropical Research Institute, and Yosemite National Park. Going into the 2013 field season, we have complete sets of data for live trees (34,393 trees ≥1 cm dbh; 13,140 trees ≥10 cm dbh), snags (2,791 snags ≥10 cm dbh), shrubs (2,299 patches ≥2 m2 of 13 species), large woody debris (1,271 pieces ≥50 cm diameter and 1 m length), a LiDAR canopy model, a LiDAR-derived ground model, and a 15 cm orthophoto.
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.
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