The values each controlled column of a registry read by knw_ip_read() may
take, beyond the life_stage, life_history_form and quote_source it
shares with knw_literature_vocab(). A registry quote comes from the paper,
with its page, so the evidence table's abstract fallback is not one of them.
Details
flow_metric is the variable a model uses to say how big a stream is:
mean annual flow, summer low flow, channel width (bankfull or wetted; say
which in note), drainage area, precipitation, or none: the variable the
model's thresholds are written on. flow_source says how the model obtained
it: gauged (measured at gauges and assigned to reaches), modelled,
field (measured on the ground), or unstated, when the only source is a
secondary account that names the metric but not how it was obtained. flow_inputs names what a modelled value
was built from, as a ;-separated list: gauge records, drainage_area,
precipitation, a hydrologic_model, or field_measurements of the
variable (field widths regressed on drainage area and precipitation are
field_measurement;drainage_area;precipitation). valley_confinement is the
confinement variable a model uses, if any. validation is how a model was
checked against fish: not at all, fish observations, redd surveys, or
densities.
