FRISCO —In what must have been incredible displays of fire and ice, ancient volcanoes once erupted under massive glacial ice sheets, leaving deposits that could help paleoclimatologists unravel some ice age puzzles.
In a recent study, University of British Columbia researchers surveyed those deposits at the Kima’ Kho tuya, which erupted under an ice sheet about 1.8 million years ago. Their findings suggest that he ancient regional ice sheet through which the volcano erupted was twice as thick as previously estimated. Continue reading “Volcano study helps measure historic ice sheet thickness”→
Chinese fleet takes 12 times more fish than it reports
By Summit Voice
SUMMIT COUNTY — Illegal fishing is a persistent problem, but it appears that China has elevated it to a new level, catching about 12 times more fish than it formally reports to the United Nation’s Food and Agriculture Organization, an international agency that keeps track of global fisheries catches.
Overall, Chinese fishing boats catch about US$11.5 billion worth of fish from beyond their country’s own waters each year according to a new study led by fisheries scientists at the University of British Columbia.
“China hasn’t been forthcoming about its fisheries catches,” said Dirk Zeller, a senior research fellow with UBC’s Sea Around Us Project and the study’s co-author. “While not reporting catches doesn’t necessarily mean the fishing is illegal … we simply don’t know for sure as this information just isn’t available,” Zeller said, explaining that there could be agreements between China and other countries that allow unreported fishing. Continue reading “Report highlights problems of unreported commercial fishing”→
Candy wrappers, styrofoam and other debris showing up in high percentage of dead birdsalong West Coast
By Summit Voice
SUMMIT COUNTY — Despite its vastness the Pacific Ocean is not immune to increases in plastic pollution, with concentrations off the coast of the Pacific Northwest reaching the level of the notoriously polluted North Sea, near the densely populated coast of northern Europe.
A new study led by a University of British Columbia researcher focused on the stomach contents of seabirds beached along the coastline from Canada down through Washington and Oregon.
Global study shows that plants are developing earlier in the spring in response to warmer temps
By Summit Voice
SUMMIT COUNTY — Many plants appear to be responding to global warming faster than anticipated by climate models, as trees leaf out and flower bloom on average about five to six days earlier for each degree (Celsius) of warming.
The observed response, based on results from 50 plant studies on four continents, is much greater than the changes induced under laboratory conditions. Changes in the timing of when plants develop has implications for entire ecoystems. There is already some evidence that the availability of food sources is out of synch with animals that depend on them.
“This suggests that predicted ecosystem changes — including continuing advances in the start of spring across much of the globe — may be far greater than current estimates based on data from experiments,” said Elizabeth Wolkovich, an ecologist at the University of British Columbia who led an interdisciplinary team of scientists that conducted the study while she was a postdoctoral fellow at the University of California, San Diego. Continue reading “Global warming: Plants respond faster than expected”→
Study finds increased abundance in areas affected by human development
By Bob Berwyn
SUMMIT COUNTY — Jellyfish populations are growing in many of the world’s coastal ecosystems, especially in areas affected by pollution, overfishing, and warming waters, according to a new study done by researchers with the University of British Columbia.
“We found numerous types and species of jellyfish that appear to be increasing, so the reported increases are certainly not due to one type jellyfish in particular,” said Lucas Brotz, a PhD student with the Sea Around Us Project at UBC and lead author of the study.
“That being said, there are several species of jellyfish that appear to be highly invasive are invading new regions around the globe all the time (probably due to transport from cargo ships),” Brotz said via email. ” The most notorious of these is a comb jellyfish called Mnemiopsis leidyi which is showing up in new places every year and often rapidly increases in abundance, potentially altering the ecosystems it invades,” he said. Continue reading “Jellyfish numbers growing in many coastal ecosystems”→