microbial community. "Dissolved organic matter from jellyfish favored the rapid growth and dominance of specific bacterial groups that were otherwise rare in the York River," says Condon. "This implies that jelly-DOM was channeled through a small component of the local microbial assemblage and thus induced large changes in community composition."
Overall, says Condon, the team's findings "suggest major shifts in microbial structure and function associated with jellyfish blooms, and a large detour of energy toward bacteria and away from higher trophic levels."
He adds that a host of factors, including climate change, over-harvesting of fish, fertilizer runoff, and habitat modifications could help to fuel jellyfish blooms into the future. "Indeed," he says, "we've seen this already in Chesapeake Bay. If these swarms continue to emerge, we could see a substantial biogeochemical impact on our ecosystems."
"Simply knowing how carbon is processed by phytoplankton, zooplankton, microbes or other trophic levels in space and time can lead to estimates of how much carbon energy is available for fish to consume," he said. "The more we know, the better we can manage ecosystem resources."
Page: 1 2 3 Related biology news :1
. Through unique eyes, box jellyfish look out to the world above the water2
. Voracious comb jellyfish invisible to prey3
. The jellyfish-like salp: Most efficient filter-feeder in the deep, scientists discover4
. Scientists unravel evolution of highly toxic box jellyfish5
. Jellyfish joyride a threat to the oceans6
. Fireflies and jellyfish help illuminate quest for cause of infertility7
. New online report on massive jellyfish swarms released8
. Observing Arctic ice-edge plankton blooms from space9
. Scripps oceanography researchers discover arctic blooms occurring earlier10
. First identification of endocrine disruptors in algae blooms11
. Iron stimulates blooms of toxin-producing algae in open ocean, study finds