More long-term and widespread monitoring needed to pinpoint trends
By Summit Voice
FRISCO —Global jellyfish populations appear to fluctuate on a decadal basis, including an increase in the 1990s and early 2000s that has led to the current perception of an overall global increase in jellyfish abundance.
The researchers did find a hint of a slight increase in jellyfish since 1970, although this trend was countered by the observation that there was no difference in the proportion of increasing vs. decreasing jellyfish populations over time. Continue reading “Study eyes global jellyfish populations”→
The researchers don’t deny that blooms of jellyfish have clogged fising nets and choked intake lines for power plants. But they say that widespread reporting of those incidents has created a perception that the world’s oceans are experiencing increases in jellyfish due to human activities such as global warming and over-harvesting of fish. Continue reading “Jellyfish not taking over the world — yet”→
Measuring relative levels of carbon isotopes helps researchers determine how the oil may move through the marine ecoystem
By Summit Voice
SUMMIT COUNTY — Just a couple of days after biologists discovered a patch of oil-damaged coral a few miles from BP’s failed Macondo well, another round of research shows that non-toxic carbon from the oil is quickly working its way up the food chain, from bacteria to plankton, which forms the basis of the marine ecosystem as an important food source for larger animals.
“Recently, much has been made of where the oil went. Because of the magnitude of the spill, the fact that the oil seemed to have ‘disappeared’ so quickly made many people uncomfortable with the unprecedented use of chemical dispersants to move the oil from its floating form on top of the water to micro-droplets within the water,” said lead author Dr. Monty Graham.