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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
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
Bird Conservation Regions (BCRs) are ecologically distinct areas with similar bird populations, ecological characteristics, and natural resource management concerns. Understanding vegetation…
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
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
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
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
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
Aspen (Populus tremuloides) forests are keystone ecosystems in the western United States that supply economic and social benefits, including drawing tourists, serving as potential fire breaks,…
USGS | 2022
The Nation’s coastlines are highly dynamic ecosystems that can change drastically in response to storms, high water levels, and sea-level rise. These changes can put habitats, lives, and…
USGS | 2022
The island of Puerto Rico is subject to numerous natural hazards including hurricanes, coastal erosion, and flooding. Information on how the island’s coastal environments respond to these events is…
USGS | 2022
Microbial biofilm communities, which are comprised of bacteria, diatoms, protozoa, and fungi, inhabit the surface of intertidal mudflats. These communities represent a large proportion of shorebirds…