September 28, 2018 – Samantha Stanton, Great Lakes Commission
If you are a PAMF participant, then congratulations! You’ve received data-driven management guidance for the 2018/19 PAMF cycle! We have thrown the term “data-driven” around a lot – but what does that mean? In the past, Phragmites managers have had to use the trial and error approach to control the Phragmites infestation – ‘That didn’t work as well as I had hoped, so let me adjust my efforts.’ Although this approach can improve management strategies, it can also lead to a lot of wasted time and resources.
What is management guidance?
This is where PAMF comes in. With the help of our participants, PAMF tracks Phragmites management actions and outcomes across the Great Lakes basin, documents how well those actions control Phragmites, and communicates those results back out to the managers in the form of management guidance!
Management guidance (see Figure 1) is provided in a combination of three actions (see Management Combination blog) – one for each of the biological phases of Phragmites (translocating, dormant, and growing; see Phragmites’ Annual Cycle blog). PAMF tracks the outcomes of 10 management actions in the form of 16 combinations (See Table 1). Limiting the numbers of actions and combinations allows us to speed up the learning and better understand the potential for control that these 16 combinations offer.
The guidance that went out to PAMF participants is the combination of actions that the PAMF model predicted would work best at reducing the Phragmites infestation on their particular management unit. Near optimal guidance was also provided for some management units as additional management combinations that the PAMF model predicted would perform within 5% of the optimal management combination.
Where does guidance come from?
At this point, you may still be wondering how we come up with “data-driven” guidance in the first place? Let us walk you through it! The data we are referring to are the outcomes of participants’ management actions. The PAMF model (see Figure 2; see Decision Support blog) takes the management reports submitted by participants, then looks at the monitoring reports submitted pre- and post-treatment and determines how well (or not) the implemented management actions worked to reduce the Phragmites infestation on each management unit. The model is then updated with that new information and optimized using the cost data that was also provided by the participants. The cost data allow the model to make recommendations that are not only highly effective but cost efficient as well.
What do I do with the guidance?
Now that you’ve received your guidance, you may be asking yourself, what do I do now? We at PAMF recognize that you are the experts on your own land and how you choose to implement the guidance provided is up to you! However, if you are unsure the best way to implement your recommended management actions, we have resources to help! Check out the Management Actions – Details and Descriptions guide to explore application techniques and considerations for each management action. Additionally, for those using herbicides as part of their annual management strategy, the Herbicide Concentration Quick Guide is a great resource to check out!
PAMF’s goal is to facilitate collective learning across the Great Lakes basin through a coordinated effort at managing Phragmites infestation. Through this effort, the Great Lakes Phragmites phighting community will reduce the uncertainty of Phragmites management outcomes, stop wasting limited resources, and ultimately get the Phragmites infestation under control in the Great Lakes basin.