Climate change to improve living conditions of the majority of kinds of insect pests — the positive effects of warming for them far exceed the stress. To such conclusion scientists have come, having analysed the response of populations of the common types of pests on the growth temperature. The results of a study published in Frontiers in Ecology and the Environment.
People around the world lose 18 percent of the annual harvest due to pests of agriculture, most of which are insects. Many insects are imported by man to new continents, becoming exotic species , and causing catastrophic damage to natural and agricultural ecosystems. To fight the consequences of people annually spend billions of dollars, but either pesticides or biological methods of struggle have not yet led farmers to the final victory.
Climate change encourage the growth temperature, contributing to the expansion of distribution ranges of pests and more frequent outbreaks of. However, their global response to climate change is very difficult to predict in high latitude warming enhances the conditions of life, and in the Equatorial can be a serious stress. The existing studies do not make General predictions, each of them considering certain types of pests on one or two parameters of their response to climate change.
Scientists led by Philippe Lehmann (Philipp Lehmann) from Stockholm University explored the complex impact of climate change on insect pests. To do this, they selected 31 species widely distributed pests, using data from the International centre of agriculture and biological Sciences.
Researchers conducted a meta-analysis of 105 research publications on pests of agriculture and forestry, capturing the response of insects to climate change in four key parameters: colonization (development of new areas), life expectancy, population dynamics, trophic relations (strength and diversity). As a climatic factor, experts have considered the change in mean annual temperature.