Scientists report that after 20 years of attempts to save the species, northern spotted owl numbers in the Northwest are still on the decline—and at a faster rate.
A combination of drought, heat and insects is responsible for the death of more than 12 million trees in California, according to a new study from UC Santa Barbara's National Center for Ecological Analysis and Synthesis (NCEAS). ...
Despite markedly different root morphologies and resulting disparities in nutrient-uptake processes, forest trees of different lineages show comparable efficiency in acquiring soil nutrients, according to researchers in Penn ...
A diverse group of researchers has teamed up to develop a therapeutic treatment for citrus greening disease, a bacterial infection that threatens the future of the U.S. citrus industry.
Auckland's trees have little protection against urban intensification and of those that are left, only a few are listed for preservation, a new study has found.
Pileated woodpeckers can cause a lot of damage to trees.
City officials have accepted a $4 million federal grant to chop down trees in the ritzy Oakland hills, a decision that ignited debate over how best to prevent deadly wildfires.
A first in tree research: European trees planted in China to identify potentially invasive species in our forests
INRA scientists worked with colleagues from the Academy of Sciences in Beijing and the Zhejiang Agriculture and Forestry University to study the ability of Chinese insect and fungal pathogens to colonize European trees.
A new study by University at Buffalo geographers explores how humans altered the arboreal make-up of Western New York forests before European settlers arrived in large numbers.