Fig 1.
Location of sample points (top) and the intensity of human activity (mudflat culture‒mostly bivalve culture, and aquaculture; bottom) along the coast of Gochang getbol and near area. The first point of each zone was denoted by Z with zone number: for example, Z1 represents the first point of zone1.
Table 1.
Relative percentage (mean ± standard deviation) of main land covers that could be associated with migratory waterbird distribution in Gochang getbol.
The values are calculated from the first four points of each zone (See S1 Table for the percentage of land covers at each point). Mudflat represents less disturbed mudflat which experiences little human activities.
Fig 2.
Least-squares means (lsmeans) and 95% confidence intervals of Shannon-Wiener diversity (left; Shannon diversity), species richness (middle), and total abundance (right) of migratory birds at each zone by season. Lsmeans (y-axis) and 95% confidence intervals (bars) are calculated from the generalized linear models.
Table 2.
Summary of Anova tests on the generalized linear models for the significance of differences in species diversity and total abundance between zones.
Fig 3.
Association between species’ traits and 5 zones.
Color bar on the right is the standardized fourth-corner coefficient (FC). Colors represent the strength (shading) and direction (blue = positive, white = no association, and red = negative) of the association.
Fig 4.
Abundance distribution map of conservation-related species generated by using the inverse distance weighted interpolation model.
Of 6, 4 (A-D) groups are composed of 2 to 7 species (See methods and S3 Table). In the abundance maps of crane/goose/stork and raptor, zone5 is left in blank because of no detection. Orange and red colors on the background represent mudflat culture (mostly bivalve culture) and aquaculture pond (shrimp farming), respectively.