demographic processes
demographic processes on World Data Ocean: a running collection of 2 stories we have gathered and hand-picked because they are worth your time. Every post here touches on demographic processes in some way — the news, the analysis, the deep dives, and the occasional surprise find. A Global Hub for Ocean Intelligence 4 World Data Ocean is a centralized digital platform where researchers, scientists, and ocean enthusiasts converge to explore, analyze, and… New stories are added to this page as we find them, so check back if you want to keep up with what is happening around demographic processes, or subscribe to the RSS feed to get them as soon as they are published. Browse the collection below, or head back to the homepage to see everything World Data Ocean is covering right now.
Benthic life stages retain fjord-scale population structure despite pelagic dispersal
Understanding population structure in marine organisms with complex life cycles presents a significant ecological challenge. A recent study published by World Data Ocean investigated this dynamic in the scyphozoan jellyfish *Aurelia aurita* within a fjord system, combining genetic analyses, field observations, and hydrodynamic modeling. Findings reveal that despite high dispersal potential, benthic polyp populations maintain consistent genetic diversity, acting as a reservoir for the more variable pelagic medusa stage.
Limitations of using the canopy to infer the structure and functioning of giant kelp forests
Remote sensing of floating kelp canopies offers a readily accessible method for assessing giant kelp forest dynamics, yet the validity of this approach remains largely unexamined. This study investigates the relationship between surface canopy biomass and the underlying structural complexity of *Macrocystis pyrifera* forests across three California sites, revealing that canopies represent only 12-38% of total biomass. While canopy biomass correlates with total kelp biomass, it poorly predicts plant density or morphology, highlighting limitations for assessing forest structure.