The new timeline places the creature's die-off
at more than a million years before the Permian extinction, in which about 90 percent of marine species vanished.
However, the regions where the mass die-off
has emerged - Kostanay, Akmola and Aktobe - are far from Baikonur.
The state Department of Fish and Wildlife says die-offs
occur each spring along beaches from Oregon to California.
Fossils in India revealed that plankton species became smaller, with less elaborate shells, suggesting that sulfur and carbon dioxide from volcanism caused ocean acidification and led to a mass die-off
in the seas.
The MPN methodology along with the mature sentinel chamber technology (patented by Michael Jenkins) can be used to compare die-off
rates of zoonotic pathogens and fecal indicator bacteria in water and soils.
KEY WORDS: freshwater mussels, die-off
, moribund, disease, bacteria
Another large die-off
in October 2006 was more complicated.
ultimately was attributed to organochlorine pesticide (OCP) poisoning from dieldrin, toxaphene, and DDT and its metabolites that were applied over many years when the fields had been used for crop production.
There was no die-off
of moose in the park or other parts of central Alberta that winter.
obstetricans collected during mass die-off
events in Spain; from these latter samples, we successfully isolated viable B.
I have had very poor crops and a large plant die-off
Most of the wildlife association members believe the oak die-off
is a natural process.