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@jby@ecoevo.social
2025-06-17 15:42:12

The proposed sell-off of federal lands in the Senate budget bill includes a LOT of Joshua tree habitat—the trees grow in some of the largest areas of undeveloped land in the lower 48 states
The place where eastern and western Joshua trees hybridize, north of Creech AFB, is included
#JoshuaTree #USpolitics

A map of Bureau of Land Management and US Forest Service proposed for sale, covering a lot of southern Nevada, southeastern California, and western Arizona
A map of Joshua tree habitat determined from satellite imagery, covering southern Nevada, southeastern California, and western Arizona

250+ million acres of public lands eligible for sale in SENR budget reconciliation package
The bill mandates disposal of over 2 million acres of BLM and National Forest lands; public lands eligible for sale in the bill encompass over 250 million acres, including local recreation areas, wilderness study areas, inventoried roadless areas, critical wildlife habitat and big game migration corridors.

@jby@ecoevo.social
2025-06-05 16:42:19

Interesting study of eastern Joshua tree mycorrhizal associations from trees near the Dome Fire burn in Mojave National Preserve, with sampling stratified by season
#ecology #mutualism #JoshuaTree …

The bioRxiv logo

Eastern Joshua tree arbuscular mycorrhizal fungal mycobiomes largely consistent across roots, soils, and seasons
The Mojave Desert is home to iconic Joshua trees threatened by climate change. Most desert plants form mutually beneficial partnerships with arbuscular mycorrhizal fungi (AMF), yet the AMF of the Eastern Joshua tree (Yucca jaegeriana) remain completely uncharacterized. We tested how Y. jaegeriana AMF spore abundance, richness, and composition varied when sampling 20 trees across 4 seasons from roots versus soils. We confirmed root colonization via staining, assessed spore abundance via microsco…

@jby@ecoevo.social
2025-06-18 19:24:35

A new paper projecting Joshua tree habitat under future climate based on incredibly high-resolution distribution data, from Joshua Tree Genome Project collaborators at USGS. They estimate up to 80% loss of suitable habitat by 2100 under the worst-case climate scenario.
#JoshuaTree #science

Map of projected future habitat probabilities for Joshua tree populations based on random forest models of presence and absence, for the years 2071-2100 under SSP3-7.0. Parts of the trees' current range, indicated as outlines, are colored to indicate high probability of presence, but many parts are colored to indicate lower probability
A scatterplot of estimated future suitable habitat area in 2021-2040, 2041-2070, and 2071-2020, under three different future climate scenarios and based on modeling from different baseline time frames. In general, less suitable habitat is projected in the latest time period, and less is projected under more sever climate change