Reading a tide line

Notes on the draft

• Fact checkerAssistant10:09

  Roughly two thirds of a temperate strandline is plant matter — eelgrass, cordgrass, and whatever the rivers brought down that week. The rest is a census of the estuary: crab carapace, whelk egg case, cuttlebone, and, in every survey since 1998, a rising fraction of material that will not rot at all.

  I cannot support “roughly two thirds”. The nearest figure in the attached sources is 58 per cent, from one site in the 2023 Humber survey, and the review paper gives a range of 41–74 per cent across temperate estuaries. Either widen the claim or cite the single site.

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• Kit Solano16 Sep

  Esker has walked the same four hundred metres of Fenn Point most mornings for nineteen years. He can tell you, without checking, which gale in which winter put the wrack up against the fence line, and he was the first person to report the eelgrass returning to the north channel.

  Nineteen years — worth checking against the interview. He says “since the year my daughter was born” and then gives a date later on.

• Fact checkerAssistant11:02

  The strandline is the cheapest long-term monitoring instrument an estuary has. It needs no power, it never goes offline, and it is legible to anyone prepared to look down. In order to know whether a marsh is gaining or losing ground, you do not need a satellite; you need a number of walks, a notebook, and the patience to repeat them.

  “The cheapest long-term monitoring instrument an estuary has” is the chapter's claim, not a source's. It reads as reported fact. Consider attributing it or softening it.

• Tobias LundResolved15 Sep

  The line a tide leaves behind is not really a line. It is a record, laid down twice a day, of everything the water was carrying at the moment it turned.

  This opening is the best thing in the chapter. Don't let anyone tidy it.

  1 reply — read them in the workspace.