Dataset Information

Impact of local and regional sources of PAHs on tribal reservation air quality in the U.S. Pacific Northwest.

ABSTRACT: Atmospheric fine particulate matter (PM_2.5) transports polycyclic aromatic hydrocarbons (PAHs) regionally and globally, influencing the air quality of communities around the planet. Concentrations of 130 PAHs extracted from PM_2.5, collected on a Native American Tribal Reservation in the Northern Puget Sound region of the American Pacific Northwest, were used to assess the air quality impacts of regional and local PAH sources, atmospheric transport, and human health implications. Wind coming from the southeast of the sampling locations increased the overall PAH concentration of the PM_2.5, while winds from the southwest decreased the PAH concentration. Concentrations of PAH subclasses increased or decreased independently at the two sampling locations with different changes in wind patterns, changing the excess lifetime cancer risk significantly. No long-range transport was measured, but emissions from local and regional PAH sources were measured. Samples collected during regional wildfires showed increased PAH concentrations. Samples collected during predicted weather inversions resulted in the highest PAH concentrations, and up to a ten-fold increase in excess lifetime cancer risk over the normal days.

SUBMITTER: Kramer AL

PROVIDER: S-EPMC7923342 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

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Impact of local and regional sources of PAHs on tribal reservation air quality in the U.S. Pacific Northwest.

Kramer Amber L AL Campbell Larry L Donatuto Jamie J Heidt Myk M Kile Molly M Massey Simonich Staci L SL

The Science of the total environment 20200105

Atmospheric fine particulate matter (PM<sub>2.5</sub>) transports polycyclic aromatic hydrocarbons (PAHs) regionally and globally, influencing the air quality of communities around the planet. Concentrations of 130 PAHs extracted from PM<sub>2.5</sub>, collected on a Native American Tribal Reservation in the Northern Puget Sound region of the American Pacific Northwest, were used to assess the air quality impacts of regional and local PAH sources, atmospheric transport, and human health implicat ...[more]

PMID: 31927295

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Project description:The distribution of species among spatially isolated habitat patches supports regional biodiversity and stability, so understanding the underlying processes and structure is a key target of conservation. Although multivariate statistics can infer the connectivity processes driving species distribution, such as dispersal and habitat suitability, they rarely explore the structure. Methods from graph theory, applied to distribution data, give insights into both connectivity pathways and processes by intuitively formatting the data as a network of habitat patches. We apply these methods to empirical data from the hydrothermal vent habitats of the Northwest Pacific. Hydrothermal vents are "oases" of biological productivity and endemicity on the seafloor that are imminently threatened by anthropogenic disturbances with unknown consequences to biodiversity. Here, we describe the structure of species assemblage networks at hydrothermal vents, how local and regional parameters affect their structure, and the implications for conservation. Two complementary networks were formed from an extensive species assemblage dataset: a similarity network of vent site nodes linked by weighted edges based on their pairwise assemblage similarity and a bipartite network of species nodes linked to vent site nodes at which they are present. Using these networks, we assessed the role of individual vent sites in maintaining network connectivity and identified biogeographic sub-regions. The three sub-regions and two outlying sites are separated by their spatial arrangement and local environmental filters. Both networks detected vent sites that play a disproportionately important role in regional pathways, while the bipartite network also identified key vent sites maintaining the distinct species assemblages of their sub-regions. These regional connectivity pathways provide insights into historical colonization routes, while sub-regional connectivity pathways are of value when selecting sites for conservation and/or estimating the multivent impacts from proposed deep-sea mining.

Dataset Information

Impact of local and regional sources of PAHs on tribal reservation air quality in the U.S. Pacific Northwest.

Publications

Impact of local and regional sources of PAHs on tribal reservation air quality in the U.S. Pacific Northwest.

Similar Datasets

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