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Epiphytic lichens and air pollution

Journal Article:

Abstract

The WHEN workgroup has made an inventory of the epiphytic lichens on freestanding trees in The Netherlands, using a 5 km square-grid as a basis. On the basis of the number of lichen species per tree species per square, the squares were divided into six classes of epiphyte richness. The data for the west of the country were analyzed in more detail, resulting in a zone map. It appeared possible to construct a descriptive model of the correlation between SO/sub 2/ concentrations and epiphyte richness. At median winter SO/sub 2/ concentrations higher than 100..mu..g/m/sup 3/ only a few insensitive species occur. At lower concentrations winter peak values (98 percentile) are more important than median ones. The extent to which a species is restricted to epiphyte-rich squares is used as a measure for ranking the species according to sensitivity. The more sensitive species have disappeared from large areas of The Netherlands. Comparison of the present situation with data from around 1950 reveals a decline almost everywhere in the country. The southern and western parts of the country are impoverished, the area between Rotterdam and Den Haag and the area between Arnhem and Nijmegen in particular have become very poor. A further  More>>
Authors:
Publication Date:
Jan 01, 1978
Product Type:
Journal Article
Reference Number:
EDB-86-027115
Resource Relation:
Journal Name: Acta Bot. Neerl.; (Netherlands); Journal Volume: 27:5/6
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; FLUORIDES; BIOLOGICAL EFFECTS; LICHENS; INJURIES; OZONE; SULFUR DIOXIDE; AIR POLLUTION; NETHERLANDS; ALGAE; CHALCOGENIDES; EUROPE; FLUORINE COMPOUNDS; FUNGI; HALIDES; HALOGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PLANTS; POLLUTION; SULFUR COMPOUNDS; SULFUR OXIDES; WESTERN EUROPE; 560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)
OSTI ID:
6427567
Research Organizations:
Rijksinstituut voor Natuurbeheer, Leersum, Netherlands
Country of Origin:
Netherlands
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: ABNRA
Submitting Site:
HEDB
Size:
Pages: 437-438
Announcement Date:

Journal Article:

Citation Formats

De Wit, T. Epiphytic lichens and air pollution. Netherlands: N. p., 1978. Web.
De Wit, T. Epiphytic lichens and air pollution. Netherlands.
De Wit, T. 1978. "Epiphytic lichens and air pollution." Netherlands.
@misc{etde_6427567,
title = {Epiphytic lichens and air pollution}
author = {De Wit, T}
abstractNote = {The WHEN workgroup has made an inventory of the epiphytic lichens on freestanding trees in The Netherlands, using a 5 km square-grid as a basis. On the basis of the number of lichen species per tree species per square, the squares were divided into six classes of epiphyte richness. The data for the west of the country were analyzed in more detail, resulting in a zone map. It appeared possible to construct a descriptive model of the correlation between SO/sub 2/ concentrations and epiphyte richness. At median winter SO/sub 2/ concentrations higher than 100..mu..g/m/sup 3/ only a few insensitive species occur. At lower concentrations winter peak values (98 percentile) are more important than median ones. The extent to which a species is restricted to epiphyte-rich squares is used as a measure for ranking the species according to sensitivity. The more sensitive species have disappeared from large areas of The Netherlands. Comparison of the present situation with data from around 1950 reveals a decline almost everywhere in the country. The southern and western parts of the country are impoverished, the area between Rotterdam and Den Haag and the area between Arnhem and Nijmegen in particular have become very poor. A further decline of the epiphytic lichen vegetation, in particular of the relatively rich areas, is expected. In fumigation experiments, using HF, SO/sub 2/, C/sub 2/H/sub 4/, O/sub 3/ and O/sub 3/ combined with SO/sub 2/ at realistic concentrations and prolonged exposition it was found that these air pollutants cause (under glasshouse conditions) significant morphological damage to all or some of the tested lichen species.}
journal = {Acta Bot. Neerl.; (Netherlands)}
volume = {27:5/6}
journal type = {AC}
place = {Netherlands}
year = {1978}
month = {Jan}
}