I’d like to talk a little about the ongoing rough-and-tumble debate over shoreline management — including a letter from a group of scientists — but first let me make a few observations about science in general.
Scientists are the first to acknowledge that science is a messy pursuit. Working hypotheses don’t always work out. And even when findings do reveal some new clarity about nature, there can be multiple ways to interpret those findings as well as new questions to be answered. Understanding takes time and effort.
But if science is messy, the application of science to public policy is downright dirty.
That’s what we see in climate change, where the big challenge for scientists is to make predictions about how climate will behave in the future by considering past changes along with the physical forces that are taking place.
The challenge for policy-makers involved in the climate debate is to understand the risks and uncertainties and then to act appropriately, given political forces working in various other directions.
Trying to protect the natural function of shorelines is a similar challenge, but it ought to be much simpler. We have a history of land use along the shorelines and a fairly good understanding of the physical processes involved.
Again, the challenge for policy-makers is to understand the risks and uncertainties about shoreline alterations and to act appropriately. In this case, political forces include people who have no apparent understanding of property rights, people who believe government has no right to regulate land use, and a large number of people trying to seek a reasonable balance that protects ecosystem functions as well as land-use opportunities.
That brings me to a letter I received this week. Written by 14 scientists, the letter is critical of an analysis by Don Flora, a retired forest researcher who has taken a keen interest in shoreline science.
In his analysis, Flora could find no statistical relationship between “stressors” caused by human construction and “ecological function,” measured by natural factors. Flora admits that his focus was narrow. He also admits that his findings do not mean that man-made alterations to the shoreline cause no harm to the ecosystem — but he seems to say that it’s a short leap to that conclusion. See my story from Oct. 26 and my Water Ways entry from Oct. 27.
Many scientists and others familiar with Puget Sound shorelines were greatly disturbed by the suggestion that bulkheads and other structures cause no harm, which is where some property-rights advocates have taken Flora’s findings. Fourteen scientists responded with a letter explaining why Flora’s analysis and conclusions were all wrong. See my story in yesterday’s Kitsap Sun.
In forwarding the letter to the Puget Sound Partnership, one of the signers, Megan Dethier of Friday Harbor Laboratories, offered this comment about Flora’s report:
“Many regional scientists immediately took issue with this misrepresentation of science, and felt that a response was warranted to help ensure that decision makers, planners, managers, and the public realize that this report was highly misleading, and that it is important to distinguish real science from pseudoscience. After much discussion about the best tone, length, and approach for this response, we have produced the attached brief document (I also attach the original Flora report).
“We (the signers, plus the MANY agency scientists who helped with it and agreed with it but were politically constrained from signing it) are unsure of the best method to get this document “out”, but most agreed that PSP is good at that kind of thing, hence this email to you. Our hope is that this might be a little piece of “ammunition” for municipalities, counties, etc. fighting off the sort of pseudoscience barrages characterized by Dr. Flora’s paper.”
Kitsap County is forming a task force to make recommendations to update the county’s shoreline regulations. Several other counties and many cities are going through this process, as required by state law. I believe smart people assigned to the Kitsap panel and others will be able to review the science and make reasonable recommendations.
A couple of things come to mind. First, not all shorelines are the same. That may be obvious, but we have rocky shores where large waves crash, as well as backwater estuaries where plants and animals are barely affected by currents. The need for buffers, as well as buffer widths, probably varies under these conditions.
Second, it is only common sense that bulkheads and docks have an effect on ecosystems. We should try to understand the effects of not only a single structure in an otherwise natural area but the effect of an entire shoreline dominated by structures. That’s the cumulative effect.
For your consideration, here are Don Flora’s original report, the letter from the 14 scientists and another interesting analysis I received from Richard Nerf, who has experience with statistics.
Don Flora report PDF 185 kb)
Letter from 14 scientists (PDF 46 kb)
Richard Nerf critique of Flora report (PDF 435 kb)
Don Flora’s response to Richard Nerf
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