Potential Approaches to Developing Lichen-Based Critical Loads and Levels for Nitrogen, Sulfur and Metal-Containing Atmospheric Pollutants in North America

Glavich, Doug; Geiser, Linda H.

doi:10.1639/0007-2745-111.4.638

Cited by 23 publications

(15 citation statements)

References 282 publications

(368 reference statements)

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“…6a,b). This method was already used for lichen sensitivity to nitrogen by Glavich and Geiser (2008). Only lichen species presented in at least two different study sites were included in the CCA.…”

Section: Coupling Ecological and Biogeochemical Approachesmentioning

confidence: 99%

Evaluation of lichen species resistance to atmospheric metal pollution by coupling diversity and bioaccumulation approaches: A new bioindication scale for French forested areas

Agnan

Probst

Séjalon‐Delmas

2017

Ecological Indicators

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To cite this version:Y. Agnan, A. Probst, N. Séjalon-Delmas. Evaluation of lichen species resistance to atmospheric metal pollution by coupling diversity and bioaccumulation approaches: A new bioindication scale for French forested areas. Ecological Indicators, Elsevier, 2017Elsevier, , 72, pp.99-110. <10.1016Elsevier, /j.ecolind.2016 b s t r a c tIn order to evaluate the metal resistance or sensitivity of lichen species and improve the bioindication scales, we studied lichens collected in eight plottings in French and Swiss remote forest areas. A total of 92 corticolous species was sampled, grouped in 54 lichen genera and an alga. Various ecological variables were calculated to characterize the environmental quality -including lichen diversity, lichen abundance, and Shannon index -, as well as lichen communities. Average ecological features were estimated for each study site and each of the following variables -light, temperature, continentality, humidity, substrate pH, and eutrophication -and they corresponded to lichen communities. Based on lichen frequencies, we calculated the index of atmospheric purity (IAP) and lichen diversity value (LDV). These two bioindication indices were closely related to lichen diversity and lichen abundance, respectively, due to their calculation formula. It appeared that LDV, which measures lichen abundance, was a better indicator of metal pollution than IAP. Coupling lichen diversity and metal bioaccumulation in a canonical correspondence analysis, we evaluated the resistance/sensitivity to atmospheric metal pollution for the 43 most frequent lichen species. After validation by eliminating possible influences of acid and nitrogen pollutions, we proposed a new scale to distinguish sensitive species (such as Physconia distorta, Pertusaria coccodes, and Ramalina farinacea) from resistant species (such as Lecanactis subabietina, Pertusaria leioplaca, and Pertusaria albescens) to metal pollution, adapted to such forested environment.

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Section: Coupling Ecological and Biogeochemical Approachesmentioning

confidence: 99%

Evaluation of lichen species resistance to atmospheric metal pollution by coupling diversity and bioaccumulation approaches: A new bioindication scale for French forested areas

Agnan

Probst

Séjalon‐Delmas

2017

Ecological Indicators

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“…Derivation of empirical CLs is often undertaken when observational data are presumed as a response variable within an exposed system. For example, in terrestrial ecosystems the responses of vascular plants [16][17][18], cryptogams [14,19] or soil physicochemical characteristics [10,[20][21][22] have been correlated to elemental deposition that is spatiotemporally linked to the observed responses. In contrast, simple mass balance CLs are cal-culated values that are based on inputs and outputs of the chemicals (e.g., N as a nutrient) or physicochemical processes of soils (e.g., acid neutralizing capacity) that might be of particular concern to resource managers.…”

Section: Derivation Of CL Models For Nitrogen and Metalsmentioning

confidence: 99%

Atmospheric Deposition and Critical Loads for Nitrogen and Metals in Arctic Alaska: Review and Current Status

Linder¹,

Brumbaugh²,

Neitlich³

et al. 2013

OJAP

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To protect important resources under their bureau's purview, the United States National Park Service's (NPS) Arctic Network (ARCN) has developed a series of "vital signs" that are to be periodically monitored. One of these vital signs focuses on wet and dry deposition of atmospheric chemicals and further, the establishment of critical load (CL) values (thresholds for ecological effects based on cumulative depositional loadings) for nitrogen (N), sulfur, and metals. As part of the ARCN terrestrial monitoring programs, samples of the feather moss Hylocomium splendens are being collected and analyzed as a cost-effective means to monitor atmospheric pollutant deposition in this region. Ultimately, moss data combined with refined CL values might be used to help guide future regulation of atmospheric contaminant sources potentially impacting Arctic Alaska. But first, additional long-term studies are needed to determine patterns of contaminant deposition as measured by moss biomonitors and to quantify ecosystem responses at particular loadings/ ranges of contaminants within Arctic Alaska. Herein we briefly summarize 1) current regulatory guidance related to CL values 2) derivation of CL models for N and metals, 3) use of mosses as biomonitors of atmospheric deposition and loadings, 4) preliminary analysis of vulnerabilities and risks associated with CL estimates for N, 5) preliminary analysis of existing data for characterization of CL values for N for interior Alaska and 6) implications for managers and future research needs.

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“…Local N deposition is correlated with N concentrations of lichen thalli, which passively accumulate N in excess of nutritional requirements (Bruteig 1993, Søchting 1995. Th is response is typically linear at low N deposition levels (Glavich and Geiser 2008). Th e upper limit of thallus N concentrations among clean sites is typically used as the response threshold.…”

Section: Response Variablesmentioning

confidence: 99%

“…In the drier rainshadow areas, Oregon white oak (Garry oak; Quercus garryana) and Pacifi c madrone (Arbutus menziesii) occur with Douglas-fi r. Mountain hemlock (Tsuga mertensiana) and Pacifi c silver fi r (Abies amabilis) dominate subalpine forests; alpine tundra is dominated by shrubs, herbs, mosses, and lichens. responses to N deposition across the Marine West Coast Forests ecoregion Geiser and Neitlich 2007;Glavich and Geiser 2008;Jovan 2008); information on lichen research methodology and terminology can be found in Chapter 4 of this report.…”

Section: Ecoregion Descriptionmentioning

confidence: 99%

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Assessment of Nitrogen deposition effects and empirical critical loads of Nitrogen for ecoregions of the United States

Pardo¹,

Robin-Abbott²,

Driscoll³

2011

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Human activity in the last century has led to a substantial increase in nitrogen (N) emissions and deposition. This N deposition has reached a level that has caused or is likely to cause alterations to the structure and function of many ecosystems across the United States. One approach for quantifying the level of pollution that would be harmful to ecosystems is the critical loads approach. The critical load is defi ned as the level of a pollutant below which no detrimental ecological effect occurs over the long term according to present knowledge.The objective of this project was to synthesize current research relating atmospheric N deposition to effects on terrestrial and aquatic ecosystems in the United States and to identify empirical critical loads for atmospheric N deposition. The receptors that we evaluated included freshwater diatoms, mycorrhizal fungi and other soil microbes, lichens, herbaceous plants, shrubs, and trees. The main responses reported fell into two categories: (1) biogeochemical, and (2) individual species, population, and community responses.The range of critical loads for nutrient N reported for U.S. ecoregions, inland surface waters, and freshwater wetlands is 1 to 39 kg N ha -1 y -1. This broad range spans the range of N deposition observed over most of the country. The empirical critical loads for N tend to increase in the following sequence for different life forms: diatoms, lichens and bryophytes, mycorrhizal fungi, herbaceous plants and shrubs, trees.The critical loads approach is an ecosystem assessment tool with great potential to simplify complex scientifi c information and effectively communicate with the policy community and the public. This synthesis represents the fi rst comprehensive assessment of empirical critical loads of N for ecoregions across the United States.

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Potential Approaches to Developing Lichen-Based Critical Loads and Levels for Nitrogen, Sulfur and Metal-Containing Atmospheric Pollutants in North America

Cited by 23 publications

References 282 publications

Evaluation of lichen species resistance to atmospheric metal pollution by coupling diversity and bioaccumulation approaches: A new bioindication scale for French forested areas

Evaluation of lichen species resistance to atmospheric metal pollution by coupling diversity and bioaccumulation approaches: A new bioindication scale for French forested areas

Atmospheric Deposition and Critical Loads for Nitrogen and Metals in Arctic Alaska: Review and Current Status

Assessment of Nitrogen deposition effects and empirical critical loads of Nitrogen for ecoregions of the United States

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