Sentences with phrase «past ecological effects»

Inevitably these debates raise questions of the past ecological effects of Aboriginal fire usage.

Not exact matches

Consequently, in the past 20 years his research has evolved from an early focus on prioritizing the effects that humans have on coral reefs and the role that marine protected areas play in conserving biological diversity and ecological processes, to developing theoretical and simulation models of coral reefs that will help predict and suggest alternatives to reduce detrimental effects, to developing practical means to restore degraded reefs through manipulation of the food web and management.

Despite the lack of an El Niño effect, 2017 is set to be the second or third hottest year on record; hurricanes unprecedented in their power pummelled the U.S. and Caribbean; the largest wildfires California has seen burned deep into the Northern Hemisphere winter; scientists warned the «Arctic shows no sign of returning to the reliably frozen region of recent past decades»; studies revealed an ecological armageddon amongst insect populations; droughts fuelled famine and insecurity across East Africa and the Middle East; the U.N. warned the number of chronically undernourished people has risen for the first time since the turn of the century due in large part to climate impacts.

Thus, for the past decade, research into the effects of early child care for infants and toddlers has been based on an ecological model of development that addresses environmental influences in family and child care contexts in conjunction with child characteristics and how experiences in one setting may shape the effects of experiences in the other.