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Identify prey values meeting calibration criteria

find_calibration_range.Rd

Evaluates adult mass loss and chick productivity outputs from a seabORD calibration run and identifies prey values that satisfy both calibration criteria simultaneously.

Usage

find_calibration_range(
  sbordout,
  masslower = 0.09,
  massupper = 0.11,
  prodlower = 0.45,
  produpper = 0.55
)

Arguments

sbordout

A seabORD output object containing calibration results, including output_a0$data and output_c0$data.

masslower

Lower acceptable bound for proportional adult mass loss. Defaults to 0.09.

massupper

Upper acceptable bound for proportional adult mass loss. Defaults to 0.11.

prodlower

Lower acceptable bound for chick productivity (ChicksPerNest). Defaults to 0.45.

produpper

Upper acceptable bound for chick productivity (ChicksPerNest). Defaults to 0.55.

Value

A data frame containing:

Prey

The prey value tested during calibration.

adult_ok

Logical indicating whether adult mass loss falls within the specified bounds.

chick_ok

Logical indicating whether chick productivity falls within the specified bounds.

overlap

Logical indicating whether both criteria are met simultaneously.

Details

Adult mass loss is calculated as: $$ (BM\_adult\_t0.mn - BM\_adult.mn) / BM\_adult\_t0.mn $$

Prey values where both adult_ok and chick_ok are TRUE represent the calibration range that satisfies the specified moderate conditions.

Examples

if (FALSE) {
sbordout <- seabORD::example_calibration_output_dd

calibration_range <- find_calibration_range(
  sbordout = sbordout,
  masslower = 0.09,
  massupper = 0.11,
  prodlower = 0.45,
  produpper = 0.55
)

# View prey values satisfying both criteria
calibration_range[calibration_range$overlap, ]
}