get_crab_strata: Get crab stratum layers

In afsc-gap-products/akgfmaps: Alaska Groundfish and Ecosystem Survey Area Mapping

Get crab stratum layers

Description

Load crab stratum polygons for EBS/NBS red king crab (Bristol Bay, Pribilof Islands, Norton Sound), EBS blue king crab (Pribilof Islands, St. Matthew Island), EBS snow crab, and EBS Tanner crab (West of 166W, East of 166W). Species and areas are described below.

Usage

get_crab_strata(select.stock = NULL, select.region = "ebs", set.crs)

Arguments

select.stock	Character vector indicating the name of the stock(s) to return. Options are Bristol Bay RKC ('bbrkc'), Pribilof Islands RKC ('pirkc'), Pribilof Islands BKC ('pibkc'), St. Matthew's BKC ('smbkc'), Norton Sound RKC ('nsrkc'), eastern Bering Sea snow crab ('ebssc'), and eastern Bering Sea Tanner crab ('ebstc').
select.region	Select region
set.crs	Which coordinate reference system should be used? If 'auto', Alaska Albers Equal Area coordinate reference system (EPSG:3338) is automatically assigned.

Examples

## Not run: 
library(akgfmaps)

# Get all stock stratum boundaries by region
ebs_stocks <- akgfmaps::get_crab_strata(select.region = "ebs", set.crs = "EPSG:3338")

ggplot() +
  geom_sf(data = ebs_stocks,
          mapping = aes(fill = STRATUM)) +
  facet_wrap(~STOCK)

# Get strata for a specific stock, such as Pribilof Islands red king crab ('pirkc')
pirkc <- akgfmaps::get_crab_strata(select.stock = "pirkc", set.crs = "EPSG:3338")

ggplot() +
  geom_sf(data = pirkc,
          mapping = aes(fill = STRATUM))
## End(Not run)

afsc-gap-products/akgfmaps documentation built on April 14, 2025, 7:13 p.m.