Related Experiment Video
Updated: May 4, 2026
07:26
Visualizing Methane-Cycling Microbial Dynamics in Coastal Wetlands
Published on: January 31, 2025
971
Sinking jelly-carbon unveils potential environmental variability along a continental margin
Mario Lebrato1, Juan-Carlos Molinero2, Joan E Cartes3
1Department of Biogeochemistry and Ecology, Helmholtz Centre for Ocean Research Kiel (GEOMAR), Kiel, Germany ; Department of Geosciences, Scripps Institution of Oceanography, San Diego, California, United States of America.
Plos One
|December 25, 2013
Summary
Gelatinous zooplankton biomass is a significant, understudied carbon pathway to the deep sea. This study quanties jelly-carbon export in the Mediterranean Sea, linking it to climate variability and ecosystem changes.
Area of Science:
- Marine Ecology
- Oceanography
- Biogeochemistry
Background:
- Particulate matter export fuels deep-sea ecosystems, sequestering carbon.
- Gelatinous zooplankton represent a fast, yet poorly understood, carbon transport pathway.
Purpose of the Study:
- To quantify jelly-carbon deposition along a Mediterranean continental margin.
- To investigate links between jelly-carbon and physical/biological variables.
- To assess gelatinous zooplankton as indicators of ecosystem change.
Main Methods:
- Utilized a large-scale benthic trawling survey (1994-2005).
- Sampled biomass depositions across shelves, slopes, and canyons.
- Analyzed spatial and temporal distribution of jelly-carbon.
Main Results:
- Observed high biomass depositions (up to 1000 carcasses/trawl), with standing stocks of 0.3–1.4 mg C m⁻².
- Spatial distribution linked to atmospheric forcing (NAO) and dense shelf water cascading.
- Temporal variability correlated with hydroclimate modifications, driven by temperature rather than chlorophyll.
Conclusions:
- Gelatinous zooplankton play a crucial role in carbon and energy transport to benthic systems.
- Jelly-carbon deposition is a key indicator of large-scale ecosystem shifts.
- Understanding these pathways is vital for deep-sea carbon sequestration studies.
Related Concept Videos
01:18Deep Sea Microbial Ecology
53
The deep ocean and its underlying sediments represent vast, largely unexplored microbial habitats that extend far beyond the sunlit photic zone. The photic (euphotic) zone typically spans the upper ~100–200 meters of pelagic waters in the open ocean, but its depth varies geographically and seasonally, where sufficient light supports photosynthetic life. Below this lies the deep sea, spanning roughly 1000–6000 meters (bathypelagic to abyssal zones), with deeper hadal trenches...
53
01:24Freshwater Microbial Ecology
58
Freshwater systems such as streams, rivers, and lakes exhibit distinct physical and biological characteristics that influence their microbial communities. These environments are broadly categorized into lotic systems—those with flowing waters like streams and most rivers—and lentic systems, which include still or slow-moving waters such as lakes, ponds, and marshes.In lentic systems, phytoplankton drive primary production, generating autochthonous organic carbon. In contrast, lotic...
58
01:30Marine Microbial Ecology
66
Marine microbial ecosystems are shaped by distinct physicochemical limits, including high salinity, low nutrient availability, and fluctuating oxygen levels. These conditions favor smaller microbial cell sizes, which maximize their surface-to-volume ratio for efficient nutrient uptake.Microbial activity and community composition are closely linked to biogeochemical cycles, particularly in dynamic environments like estuaries, where halotolerant microbes thrive in response to variable salinity...
66
01:25Microbial Mats
67
Microbial communities forming biofilms and mats represent complex, spatially structured ecosystems where metabolic processes are stratified according to light, oxygen, and nutrient gradients. Biofilms are initial colonization stages, only a few millimeters thick, while mature microbial mats can reach centimeter-scale thickness and display intricate vertical organization. Their structural and functional heterogeneity allows microorganisms to occupy distinct ecological niches within a few...
67
01:24Carbonation Shrinkage
662
Atmospheric CO2 penetrates the concrete's pores and, in the presence of moisture, forms carbonic acid, which then reacts with calcium hydroxide in the hydrated cement, forming calcium carbonate. This process reduces the concrete's volume and is termed carbonation shrinkage.
The concrete's permeability is slightly reduced as calcium carbonate produced during the reaction fills its pores. Furthermore, its strength is slightly enhanced as the water released during the reaction...
The concrete's permeability is slightly reduced as calcium carbonate produced during the reaction fills its pores. Furthermore, its strength is slightly enhanced as the water released during the reaction...
662
01:11Buoyancy and Stability for Submerged and Floating Bodies
3.6K
In fluid mechanics, buoyancy and stability are key concepts for understanding the behavior of submerged and floating bodies. When a stationary body is fully or partially submerged in a fluid, the fluid exerts a force on the body known as the buoyant force. This force acts vertically upward through a point called the center of buoyancy, which is the center of the displaced fluid volume. According to Archimedes' principle, the magnitude of the buoyant force is equal to the weight of the fluid...
3.6K