Following high-severity fire, scientists have found forest recovery may increasingly be compromised by lack of tree seed sources, warmer and drier post-fire climate and more frequent reburning.
Environmental destruction may make pandemics more likely and less manageable, new research suggests.
No year has been as hot and dry as 2018 since climate records began. Central European forests showed severe signs of drought stress. Mortality of trees triggered in 2018 will continue for several years.
'Through a counterfactual analysis, we showed that between 1986 and 2011 the incentives to afforestation in Chile caused an increase in forest plantations, but reduced the extent of native forests', explains the main conclusions of the paper Impacts of Chilean forest subsidies on forest cover, carbon and biodiversity, published by the journal Nature Sustainability.
"Why do plants have thorns?" is an easy question: The thorns help protect against hungry animals that like to munch on the plants. "Where do thorns come from?" is a more complicated question -- but Yale scientists have found an answer. Their insight, reported in the June 18 issue of Current Biology, may help change the way oranges and other crops are grown.
Given the tremendous ability of forests to absorb carbon dioxide from the atmosphere, some governments are counting on planted forests as offsets for greenhouse gas emissions--a sort of climate investment. But as with any investment, it's important to understand the risks. If a forest goes bust, researchers say, much of that stored carbon could go up in smoke.
Recent devastating fires in the Amazon rain forest and the Australian bush highlight the need to detect forest fires at early stages, before they blaze out of control. Current methods include infrared imaging satellites, remote sensing, watchtowers and aerial patrols, but by the time they sound the alarm, it could be too late. Now, researchers reporting in ACS Applied Materials & Interfaces have developed self-powered "paper chips" that sense early fires and relay a signal.
A three-dimensional network of fibers makes the bark resistant to fire and rock fall.
A new study in The Auk: Ornithological Advances suggests that wildfires change the types of songs sung by birds living in nearby forests.
The cultivation of coffee, cocoa and vanilla secures the income of many small-holder farmers and also drives land-use change. In particular, cultivation in agroforestry, in which these crops are combined with trees that provide shade, is considered to have great potential for ecologically sustainable cultivation. Researchers at the University of Göttingen now show that the land-use history of agroforestry systems plays a crucial role in assessing the sustainability of agroforestry. Results appeared in Conservation Letters.