STRATUM Data Collection and Analysis: Baltimore
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Transcript of STRATUM Data Collection and Analysis: Baltimore
STRATUM Data Collection and Analysis: Baltimore
Baltimore’s 2007 Sample Survey Background
TreeBaltimore Why a survey? Why a sample? Why iTree?
Baltimore’s 2007 Sample Survey Partners & Division of Labor
Baltimore City Department of Recreation & Parks (TreeBaltimore & Forestry)
Training & equipment Baltimore City Department of Planning
Technical, data review, QA/QC Parks & People Foundation
Volunteer management & project logistics
Baltimore’s 2007 Sample Survey Timeline
Planning began in April Training occurred in June Surveying occurred throughout July QA/QC began mid-way through
surveying and is wrapping up now
Baltimore’s 2007 Sample Survey Survey Structure
Random selection of 500 sample blocks PDA vs. Paper
Paper option served as a backup Using in concert with a GPS in the field
No benefit when sampling
Baltimore’s 2007 Sample Survey Logistical Structure
City divided into five sections Volunteers put in groups of two or three
Partners changed frequently Schedules produced on a weekly basis Parks & People office was the hub for volunteer
check in and out
Working With Volunteers Pools of interested volunteers
Utilized contact and distribution lists of all partners
Expectations and time commitments Volunteer expertise
Tree Identification PDAs Knowledge of Baltimore streets
Working With Volunteers Training
Four hour training prior to surveying Some additions/revisions added Could have had more extensive
mentoring during beginning of survey period
Volunteer support materials
Analysis
Data Quality As function of training QA/QC during and after data collection
Inputting data into STRATUM
Lessons Learned Things you won’t find in the manual
Logistics Weather concerns Safety iTree database setup
Lessons Learned Lessons Learned
The danger of the two sided dbh tape Spend more time on design & planning Be in touch w/volunteers in the field Start QA/QC early No need for dividing city into sections Better tracking of block assignments for QA/QC Pre-testing, pre-testing, pre-testing
Helpful Hints Some helpful tips
T-shirts – good to have something to identify surveyors
Equip surveyors with info about project Prioritize what information needs to be collected Plan to complete more surveying than needed Thank your volunteers!