Sentences with phrase «weakened by drought»

«In some case trees may be killed by drought, but in many cases they're being weakened by the drought and then being finished off by the beetles or other stresses,» Swann said.

Weakened by drought, most succumbed to a blitz of pine beetles that ate into their bark and cut off their circulation system.

Synopsis: In a not - too - distant future, North America has collapsed, weakened by drought, fire, famine, and war, to be replaced by Panem, a country divided into the Capitol and 12 districts.

The half - centimeter - long spruce bark beetles can kill a mature tree within months, especially one weakened by drought.

Not exact matches

«Our work provides the first real - world experimental evidence that these natural enemies of plants can play a dramatic role in lowering ecosystems» tipping point by killing drought - weakened vegetation and preventing plants from recovering,» said Brian R. Silliman, Rachel Carson Associate Professor of Marine Conservation Biology at Duke's Nicholas School of the Environment.

Crops like corn and groundnuts are more susceptible to aflatoxin - producing mold when their immune systems are weakened by conditions like high temperature and drought stress.

Drought is expected to occur 20 - 40 percent more often in most of Australia over the coming decades.6, 18 If our heat - trapping emissions continue to rise at high rates, 19 more severe droughts are projected for eastern Australia in the first half of this century.6, 17 And droughts may occur up to 40 percent more often in southeast Australia by 2070.2 Unless we act now to curb global warming emissions, most regions of the country are expected to suffer exceptionally low soil moisture at almost double the frequency that they do now.3 Studies suggest that climate change is helping to weaken the trade winds over the Pacific Ocean, with the potential to change rainfall patterns in the region, including Australia.20, 21,16,22