By Carole L. Leadem, Sharon L. Gillies, H. Karen Yearsley, Vera Sit, David L. Spittlehouse, and Philip J. Burton
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Extra resources for Field Studies of Seed Biology
Installation requires – days depending on the number and location of sensors, and monthly site visits are required to check equipment and collect data. At least day per month should be allowed per site for data processing and analysis—an important consideration that is often overlooked. Soil moisture There is no easy way to obtain good soil moisture measurements, and the difficulty increases as one gets closer to the surface. Gravimetric sampling and time-domain reflectometry (tdr) measure soil water content (Hook et al.
This will keep out most of the public. At the minimum, the sign should state “Research Site, Do Not Disturb. ” Locate valuable equipment such as meteorological stations so they are not visible from the road; this will lessen the possibility of equipment being vandalized or used for target practice. C. Ministry of Forests Research Branch Operating Policies and Procedures). Use radio or cellphone communication when possible. Radios are essential on active logging roads. The forest district office or logging company can supply you with radio frequencies, but they are also usually posted at the beginning of the road.
What data are needed? Air and bud temperatures and solar radiation, from bud initiation through flowering (over months or more). The year-to-year variation could be obtained by monitoring for many years, or by calculating regression equations that are based on weather data. Site weather conditions could be related to the nearest long-term weather station to provide the data that would be needed to drive the model. Ideally, a physically based model of bud/flower temperature as a function of site weather conditions and bud characteristics should be developed to allow portability to other sites with a minimum of calibration.
Field Studies of Seed Biology by Carole L. Leadem, Sharon L. Gillies, H. Karen Yearsley, Vera Sit, David L. Spittlehouse, and Philip J. Burton