A new analysis of tree rings and shipwreck records has now helped created a more detailed look at historic hurricane activity in the time before scientists were able to accurately count the tropical systems. The findings show there was a big drop in hurricanes between 1645 and 1715, during an era of reduced sunspot activity and generally cool temperatures in the northern hemisphere.
FRISCO— Biologists and resource managers grappling with invasive red lionfish in the Caribbean have some new clues based on genetic research.
Without natural predators, lionfish have spread throughout the western Atlantic, displacing native fish and disrupting ecosystems.
In a new study released this week, U.S. Geological Survey researchers say the invasion probably started in multiple locations. Florida had been fingered as the likely source, but the analysis suggest that multiple introductions occurred, with some potentially coming from the more southern parts of the range. Continue reading “Genetics help pinpoint origins of lionfish invasion”→
FRISCO — After issuing a general warning about the potential for widespread coral reef bleaching this year, federal scientists now say they have the ability to make more detailed projections about the timing and geographic distribution of such events.
‘Our data show that climate change has helped drive down staghorn and elkhorn corals …’
FRISCO — Elkhorn and staghorn corals, once widespread across the Caribbean, have all but disappeared from the region, and scientists at the Florida Institute of Technology think they know why — ocean warming has been a big factor in the die-off, making the corals more susceptible to white-band disease.
“Our data show that climate change has helped drive down staghorn and elkhorn corals by boosting white-band disease,” said Florida Tech Ph.D. student Carly Randall. “We still don’t know if the disease is caused by a marine microbe, but now we do know that changes in the environment contributed to the problem.” Continue reading “Scientists link warming ocean with coral-killing disease”→
Guadeloupe seen as focal point for unreleased tectonic strain
FRISCO — The risk of a large earthquake and subsequent tsunami may be greater than previously thought, U.S. Geological Survey researchers say after studying the plate boundary in the Lesser Antilles region, where 20 of the 26 Caribbean islands are located.
The geologists estimate that enough unreleased strain may have accumulated offshore of Guadeloupe to potentially create a magnitude 8.0-8.4 earthquake. A magnitude 7.5 – 8.5 quake in 1843 killed several thousand people in Guadeloupe, and a similar quake in the future could cause several tens to several hundreds of fatalities, and hundreds of millions to billions of U.S. dollars in damages. Continue reading “USGS study eyes Caribbean tsunami risk”→
According to the court, the federal agency erred by allowing fishing for depleted parrotfish and other algae-eating reef fish species without properly monitoring the fishery’s impacts on rare corals that depend on healthy fish populations.