Health & Environmental Research Online (HERO)


ISA NOxSOxPM Ecology (2018)

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3,323 References Were Found:

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Estimating base cation weathering rates in the USA: challenges of uncertain soil mineralogy and specific surface area with applications of the profile model

Author: Whitfield, C.J., Phelan, J.N., Buckley, J., CLark, C.M., Guthrie, S., Lynch, J.A. (2018) Water, Air, and Soil Pollution 229:61. HERO ID: 4288664


The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Feasibility of coupled empirical and dynamic modeling to assess climate change and air pollution impacts on temperate forest vegetation of the eastern United States

Authors: Mcdonnell, TC; Reinds, GJ; Sullivan, TJ; Clark, CM; Bonten, LTC; Mol-Dijkstra, JP; Wamelink, GWW; Dovciak, M (2018) Environmental Pollution 234:902-914. HERO ID: 4167086

[Less] Changes in climate and atmospheric nitrogen (N) deposition caused pronounced changes in soil conditions . . . [More] Changes in climate and atmospheric nitrogen (N) deposition caused pronounced changes in soil conditions and habitat suitability for many plant species over the latter half of the previous century. Such changes are expected to continue in the future with anticipated further changing air temperature and precipitation that will likely influence the effects of N deposition. To investigate the potential long-term impacts of atmospheric N deposition on hardwood forest ecosystems in the eastern United States in the context of climate change, application of the coupled biogeochemical and vegetation community model VSD+PROPS was explored at three sites in New Hampshire, Virginia, and Tennessee. This represents the first application of VSD+PROPS to forest ecosystems in the United States. Climate change and elevated (above mid-19th century) N deposition were simulated to be important factors for determining habitat suitability. Although simulation results suggested that the suitability of these forests to support the continued presence of their characteristic understory plant species might decline by the year 2100, low data availability for building vegetation response models with PROPS resulted in uncertain results at the extremes of simulated N deposition. Future PROPS model development in the United States should focus on inclusion of additional foundational data or alternate candidate predictor variables to reduce these uncertainties.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Vegetation dynamics associated with changes in atmospheric nitrogen deposition and climate in hardwood forests of Shenandoah and Great Smoky Mountains National Parks, USA

Authors: Mcdonnell, TC; Belyazid, S; Sullivan, TJ; Bell, M; Clark, C; Blett, T; Evans, T; Cass, W; Hyduke, A; Sverdrup, H (2018) Environmental Pollution 237:662-674. HERO ID: 4304224

[Less] Ecological effects of atmospheric nitrogen (N) and sulfur (S) deposition on two hardwood forest sites . . . [More] Ecological effects of atmospheric nitrogen (N) and sulfur (S) deposition on two hardwood forest sites in the eastern United States were simulated in the context of a changing climate using the dynamic coupled biogeochemical/ecological model chain ForSAFE-Veg. The sites are a mixed oak forest in Shenandoah National Park, Virginia (Piney River) and a mixed oak-sugar maple forest in Great Smoky Mountains National Park, Tennessee (Cosby Creek). The sites have received relatively high levels of both S and N deposition and the climate has warmed over the past half century or longer. The model was used to evaluate the composition of the understory plant communities, the alignment between plant species niche preferences and ambient conditions, and estimate changes in relative species abundances as reflected by plant cover under various scenarios of future atmospheric N and S deposition and climate change. The main driver of ecological effects was soil solution N concentration. Results of this research suggested that future climate change might compromise the capacity for the forests to sustain habitat suitability. However, vegetation results should be considered preliminary until further model validation can be performed. With expected future climate change, preliminary estimates suggest that sustained future N deposition above 7.4 and 5.0 kg N/ha/yr is expected to decrease contemporary habitat suitability for indicator plant species located at Piney River and Cosby Creek, respectively.

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Influence of experimental, environmental, and geographic factors on nutrient-diffusing substrate experiments in running waters: Supplementary materials

Authors: Beck, WS; Rugenski, AT; Poff, NL; (2017) Freshwater Biology 62. [Supplemental Data] HERO ID: 4154294

Abstract: Supplementary materials

Technical Report
Technical Report

Mississippi River/Gulf of Mexico Watershed Nutrient Task Force 2017 report to congress

Author: EPA (2017) HERO ID: 4152338


The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Influence of experimental, environmental, and geographic factors on nutrient-diffusing substrate experiments in running waters

Authors: Beck, WS; Rugenski, AT; Poff, NL; (2017) Freshwater Biology 62:1667-1680. HERO ID: 4154293

[Less] Freshwater algal growth is often limited by the availability of nitrogen (N), phosphorus (P), or both . . . [More] Freshwater algal growth is often limited by the availability of nitrogen (N), phosphorus (P), or both nutrients (NP). For over 30years, investigators have conducted nutrient-diffusing substrate (NDS) experiments to quantify algal nutrient limitation or co-limitation in rivers and streams. Previous meta-analyses of NDS have shown that algae are commonly co-limited by N and P and that water column nutrients are weakly predictive of limitation. These analyses have not, however, comprehensively addressed the experimental, environmental, and geographic covariates affecting nutrient limitation results. We surveyed the literature and extracted data for algal biomass effect sizes and a suite of covariates across a total of 649 experiments. We built meta-regression models to identify important controls on NDS results and to gain insights about algal nutrient limitation patterns over space and time. We also reviewed potential mechanisms for the reported result that NDS N and P treatments can inhibit algal growth. Experimental variables including substrate type, chemical concentration, and experimental length significantly affected P and NP effect sizes, while NDS chemical compound influenced N, P, and NP effect sizes. We also found that environmental variables such as in-stream nutrients and riparian canopy cover significantly affected limitation by N, P, and NP. Temperature, stream discharge, and stream velocity only affected limitation by NP. Land use, ecoregion, and season showed clear trends in nutrient limitation for all treatments that could generally be tied to environmental factors like in-stream nutrients and riparian canopy cover. Most experimental and environmental variables that were statistically significant in the meta-regression models produced very low R-2 index values, indicating that the models explained little variation in among-site effect sizes. Spatial factors including stream order, ecoregion, and climate classification had the highest R-2 index values, but these models still produced a large amount of unexplained variance. In light of these findings, we provide recommendations for improving NDS experimental design and pursuing future research avenues using NDS. We also highlight the need for future experiments to consider algal stressors that may interact with nutrient limitation experiments.

Archival Material
Archival Material

National Centers for Coastal Ocean Science: News and features. Gulf of Mexico ‘dead zone’ largest ever measured

Author: NOAA (2017) HERO ID: 3981601

[Less] Scientists have determined this year’s Gulf of Mexico “dead zone,” an area of low oxygen that can kill . . . [More] Scientists have determined this year’s Gulf of Mexico “dead zone,” an area of low oxygen that can kill fish and marine life, is 8,776 square miles—an area about the size of New Jersey. It is the largest dead zone measured since mapping of the area began in 1985.

Archival Material
Archival Material

Estuary data mapper (EDM)

Author: U.S. EPA (2017) Available online at https://www.epa.gov/hesc/estuary-data-mapper-edm. [Website] HERO ID: 4088582


Journal Article
Journal Article

Nitrogen-induced terrestrial eutrophication: Cascading effects and impacts on ecosystem services : Supplementary materials

Authors: Clark, CM; Bell, MD; Boyd, JW; Compton, JE; Davidson, EA; Davis, C; Fenn, ME; Geiser, L; Jones, L; Blett, TF (2017) Ecosphere 8. [Supplemental Data] HERO ID: 4135274

Abstract: Supplementary materials

The "refereed" or "peer review" status of a journal comes from the Ulrichsweb Global Serials Directory (http://ulrichsweb.serialssolutions.com/), as supplied by the publisher. The term refers to the system of critical evaluation of manuscripts/articles by professional colleagues or peers. The content of refereed publications is sanctioned, vetted, or otherwise approved by a peer-review or editorial board. The peer-review and evaluation system is utilized to protect, maintain, and raise the quality of scholarly material published in serials. Publications subject to the referee process are assumed, then, to contain higher quality content than those that are not.
Peer Reviewed Journal Article

Development of an epiphyte indicator of nutrient enrichment: Threshold values for seagrass epiphyte load

Author: Nelson, WG (2017) Ecological Indicators 74:343-356. HERO ID: 4149744

[Less] Metrics of epiphyte load on macrophytes were evaluated for use as quantitative biological indicators . . . [More] Metrics of epiphyte load on macrophytes were evaluated for use as quantitative biological indicators for nutrient impacts in estuarine waters, based on review and analysis of the literature on epiphytes and macrophytes, primarily seagrasses, but including some brackish and freshwater rooted macrophyte species. An approach is presented that empirically derives threshold epiphyte loads which are likely to cause specified levels of decrease in macrophyte response metrics such as biomass, shoot density, percent cover, production and growth. Data from 36 studies of 10 macrophyte species were pooled to derive relationships between epiphyte load and.25 and 50% seagrass response levels, which are proposed as the primary basis for establishment of critical threshold values. Given multiple sources of variability in the response data, threshold ranges based on the range of values falling between the median and the 75th quantiles of observations at a given seagrass response level are proposed rather than single, critical point values. Four epiphyte load threshold categories low, moderate, high, very high, are proposed. Comparison of values of epiphyte loads associated with 25 and 50% reductions in light to macrophytes suggest that the threshold ranges are realistic both in terms of the principle mechanism of impact to macrophytes and in terms of the magnitude of resultant impacts expressed by the macrophytes. Some variability in response levels was observed among climate regions, and additional data collected with a standardized approach could help in the development of regionalized threshold ranges for the epiphyte load indicator. Published by Elsevier Ltd.