Conservation / Tree Health

By Rachel Candlin, BBC News

A population survey of the world's rarest maple tree offers hope for the endangered species, a conservationist has said.

Dan Crowley, tree conservation manager at Westonbirt Arboretum in Tetbury, Gloucestershire, was part of a team of researchers surveying the Amami maple on an island in southern Japan.

Their research found only 12 mature Amami maples in the wild but the discovery of three female specimens could help ensure the species' reproductive future.

The discovery of a hybrid population of poplar trees in western Wyoming has provided insight into how natural hybridization informs the evolution of many plant species, according to a team led by Penn State researchers. They also said their discovery suggests that genetic exchange between species may be critical for adaptation to environmental change.

This week, the group that sets the rules for naming plant species will vote on whether to rename dozens of organisms whose scientific designations contain a racial slur, as well as to reconsider other offensive names, such as those that recognize colonialists or people who advocated for slavery.

The votes at the International Botanical Congress in Madrid mark the first time that taxonomists have officially considered rule changes to deal with species names that many people find offensive.

A collaborative team of researchers led by Ben Weinstein of the University of Florida, Oregon, US, used machine learning to generate highly detailed maps of over 100 million individual trees from 24 sites across the U.S., publishing their findings July 16th in the open-access journal PLOS Biology. These maps provide information about individual tree species and conditions, which can greatly aid conservation efforts and other ecological projects.

The baobab trees (genus Adansonia) have attracted tremendous attention because of their striking shape and distinctive relationships with fauna1. These spectacular trees have also influenced human culture, inspiring innumerable arts, folklore and traditions. Here we sequenced genomes of all eight extant baobab species and argue that Madagascar should be considered the centre of origin for the extant lineages, a key issue in their evolutionary history2,3.

One of the natural wonders of the world facing threats from climate change may have gotten a fleeting reprieve as a result of extra moisture over the past couple of years.

Populations of the iconic Joshua tree may be showing signs of recovery after several rounds of atmospheric rivers inundated the West Coast -- including California's Mojave and Colorado deserts -- with record amounts of precipitation over the past year and a half, experts told ABC News.

by Cécilia Carron, Ecole Polytechnique Federale de Lausanne

A group of EPFL and ETH Zurich scientists have mapped the biodiversity in forests worldwide. Their data, when combined with climate projections, reveal trends that could support ecosystem conservation and restoration efforts.

by Journal of Remote Sensing

A team of researchers has unveiled a novel approach to accurately characterizing tree height composition in forests using the Global Ecosystem Dynamics Investigation (GEDI) Light Detection and Ranging (LiDAR) technology. This study marks a significant advancement in our understanding of forest ecosystems, shedding light on the intricacies of tree height variability and their implications for ecological studies and climate change mitigation efforts.

The oldest trees in the forest help to prevent the disappearance of endangered species in the natural environment, according to a study led by the University of Barcelona. This is the case of the wolf lichen -- threatened throughout Europe -- , which now finds refuge in the oldest trees in the high mountains of the Pyrenees. This study reveals for the first time the decisive role of the oldest trees in the conservation of other living beings thanks to their characteristic and unique physiology.

By Utah State University

An overlooked and long-neglected type of forest has vast capacity to rebound, enhancing species diversity and resilience to climate change, according to an international team of forest scientists.

According to new research, published in PLOS ONE, there is ample habitat for the Eurasian aspen, and these environments will continue to be suitable for this "keystone species" as the global climate warms.