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USGS | 2022
California recently experienced one of the most severe droughts in its history, resulting in extensive dieback of chaparral vegetation in the State’s Mediterranean regions. Though chaparral species…
USGS | 2022
The substantial distributional expansion and infill of pinyon (Pinus monophylla) and juniper (Juniperus sp.) trees (hereafter, "conifer") into sagebrush (Artemisia spp.) ecosystems since…
USGS | 2022
Understanding species status and forecasting range shifts for plants and animals requires accurate species distribution information, particularly at the margins of species ranges. However, most…
USGS | 2022
In recent decades, forests worldwide have experienced dramatic and often unexpected drought-related tree mortality events. California recently suffered its most extreme drought on record, resulting…
USGS | 2022
Shrublands in southern California have seen sweeping changes in vegetation composition and structure due to fire and drought. Invasion of non-native grasses after repeated fire or drought events can…
USGS | 2022
Bird Conservation Regions (BCRs) are ecologically distinct areas with similar bird populations, ecological characteristics, and natural resource management concerns. Understanding vegetation…
USGS | 2022
Fusing remote sensing products from different satellite sensors allows the development of enhanced maps of the distribution of coastal wetland plants and more accurate models of coastal elevations.…
USGS | 2022
Mercury is a neurotoxin and environmental pollutant that endangers the health of humans and wildlife. When mercury flows into aquatic environments like San Francisco Bay (SFB), it can be converted by…
USGS | 2022
The conversion of natural land cover to built-up surfaces has been widely documented as the main determinant of warming across urban areas, since buildings, roads, and other infrastructure absorb and…
USGS | 2022
Fire perimeter databases provide critical geospatial information that land managers use for a variety of purposes, including documenting fire occurrence, determining historical reference conditions…
USGS | 2022
Tens of millions of trees reportedly died in California during the 2012–2016 drought, resulting in marked increases in heavy fuel loads on the landscape. In conjunction with warming temperature,…
USGS | 2022
The U.S. Geological Survey (USGS) Fire Danger Forecast Program generates several products that forecast the potential for large fires to occur across the conterminous United States. The Wildland Fire…