Fig. 1: Site-specific multispecies sustainable reference points and assessment for coral reef fisheries for the Gompertz-Fox surplus production model.
From: Sustainable reference points for multispecies coral reef fisheries
a, b Combined (i.e., inclusive of among-location variability and parameter uncertainty) site-specific MMSY (multispecies maximum sustainable yield) and BMMSY (biomass that produces multispecies maximum sustainable yield) posterior distributions. Rug plots show the posterior medians for each site given their specific environmental conditions (n = 2053 individual sites). Dashed lines and gray numbers represent the median posterior MMSY and BMMSY for average environmental conditions, respectively. c–h Expected change in MMSY and BMMSY for coral reef fishes with environmental conditions (hard coral cover, ocean productivity, sea surface temperature and whether the reef is an atoll). Line is the posterior median and polygons are 90% uncertainty intervals for atoll and non-atoll reef locations, with all other environmental variables fixed at their average values. See Supplementary Fig. 3 for more details. i, j) Median biomass status (B/BMMSY) and fishing status (C/ MMSY) for each site open to extraction (n = 1903 individual sites). Jittered points are each site, color coded by (i) whether the estimated biomass (B) was above or below site-specific BMMSY (median (B/BMMSY) < 1, red), and (j) whether the estimated per-unit-area catch (C) was above or below site-specific MMSY (median (C/MMSY) > 1, red). Numbers indicate the percentage of sites in each category that were below BMMSY (i) or estimated to be catching above MMSY (j). k Percentage of exploited sites assigned to different fishery status categories based on site-specific catch estimates, median biomass and surplus production curves: red (unsustainable), yellow (warning), turquoise (recovering), and navy blue (in good condition). Sites that have passed one of both reference points (i.e., MMSY and/or BMMSY) are classified as being of conservation concern4 (Methods). Source data are provided as a Supplementary Data file.
