Lichen aren't just a happy couple made up of a single fungus and a single algae. There's a third part involved.
Woody climbing vines, known as lianas, are preventing tropical forests from recovering and are hampering the ability of forests to store carbon, scientists are warning.
This is the first study to show that deciduous tree water uptake of snowmelt water represents a large but overlooked aspect of the water balance in boreal watersheds. For the boreal forest of Alaska and Western Canada, this equates to about 17-20 billion cubic meters of water per year. That is roughly equivalent to 8-10 percent of the Yukon River's annual discharge.
Baby songbirds in the nest face naturally tough odds. Unable to fly, they are easy prey for cats, snakes, and even other birds. But the perils don't end when the young birds venture out from the nest. Now, new research from the University of Missouri shows that the risks baby migratory songbirds face in the nest are not necessarily the same out of the nest. The findings may have important implications for migratory songbird conservation.
Garden grass could become a source of cheap and clean renewable energy, scientists have claimed.
Dating back nearly 150 years, a classic example of symbiosis has been the lichen: a mutually helpful relationship between an alga and a fungus. Now, that well-known dualistic relationship is being challenged. Researchers at the University of Montana, working together with colleagues from Austria, Sweden and Purdue University, have found that some of the world's most common lichen species actually are composed of three partners -- not the widely recognized two.
Research comparing pastures with multiple types of plants to those with less variety shows surprising results in land productivity and soil health.
Researchers identified the influence of two nitrogen levels and two fertigation methods (overhead and flotation) of globe artichoke transplants on root/shoot growth and leaf physiology during the nursery period. The study also determined impacts of nursery treatments on the subsequent crop growth and yield of artichoke under three field irrigation methods. Overall, low nitrogen level applied with overhead irrigation in the nursery positively improved the transplant root system and transplant quality of artichoke seedlings.
A two-year study evaluated effects of winter treatments on performance, turfgrass injury, and spring transition of bermudagrass under a supplemental irrigation schedule. Overseeding reduced bermudagrass spring transition by up to 50% compared with untreated and colorant-treated plots. Fall colorant treatments did not accelerate bermudagrass transition compared with untreated plots. Analyses showed that seasonal environmental differences can impact relative benefits derived from colorant applications, as well as performance of annual and perennial ryegrass.
An unprecedented study combining projections of future climate with more than two million tree-ring records spanning all of North America suggests that forests ache more and more under the burden of climate change. The resulting detailed forecast map for the continent reveals up to 75 percent slower growth projected for trees in the southwestern US, along the Rockies, through interior Canada and Alaska.