"For a species in danger, every source of mortality is significant".
But, Dr. Gail added, "these are not a negligible source of mortality".
Breast cancer became the major source of mortality between women.
BACKGROUND: Critical limb ischemia (CLI) is increasing in prevalence, and remains a significant source of mortality and limb loss.
Predation in estuarine systems is an important source of mortality for benthic organisms.
Roadside fencing has increasingly been installed to help eliminate this source of mortality.
Collisions between wildlife and vehicles represent a large source of mortality for many species.
Collisions with windows are a serious source of mortality for birds: hundreds of millions die from window strikes each year in the US alone.
Conflict with humans, especially herders, outside parks is a major problem, and humans living around parks remain the predominant source of mortality for most populations.
Poaching, believed to be increasing, has been an important source of mortality in Wisconsin's wolf population since the 1980s.
"The biggest source of mortality for the butterflies is failure to get big enough to go into diapause before the plant vanishes," Boggs says.
