beta diversity
2 stories filed under beta diversity on World Data Ocean. The newest of them: “Dynamic Biofouling: DNA Analysis Reveals Patterns Across Ocean Conditions” and “East Sea Fish Communities Converge as Warming Waters Reshape Habitats”. Season explained the largest share of variation in biofouling communities, but substrate and depth still left their mark. Two decades of standardized surveys around Dokdo and Ulleungdo reveal a quiet but significant shift: neighboring fish communities are becoming more alike. A Global Hub for Ocean Intelligence 4 World Data Ocean is a centralized digital platform where researchers, scientists, and ocean enthusiasts converge to… The list below is every beta diversity story on World Data Ocean, newest first.
Dynamic Biofouling: DNA Analysis Reveals Patterns Across Ocean Conditions
Season explained the largest share of variation in biofouling communities, but substrate and depth still left their mark. That is the takeaway from a new study that deployed two synthetic materials at three depths across summer and winter, analyzing 432 samples with DNA metabarcoding. Winter assemblages, dense and persistent, were dominated by Hydrozoa; summer communities, rapid but removable, favored Oligohymenophorea and Malacostraca. This kind of empirical, replicated work sharpens our understanding of fouling pressure.
East Sea Fish Communities Converge as Warming Waters Reshape Habitats
Two decades of standardized surveys around Dokdo and Ulleungdo reveal a quiet but significant shift: neighboring fish communities are becoming more alike. Bray-Curtis dissimilarity between the islands dropped from 0.478 to 0.210 over the shared study period, driven by species turnover rather than chance. This convergence aligns with rising sea-surface temperatures around both islands. What stands out is that the change involves broad taxonomic shifts, not just warm-affinity species.