Bio-indicators of nitrogen pollution in heather moorland

Heather moorlands are internationally important ecosystems that are highly sensitive to eutrophication and acidification by reactive atmospheric nitrogen (N) deposition. We used a long-term experiment simulating wet-deposition of N on heather moorland to identify potential bio-indicators of N deposi...

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Vydáno v:	The Science of the total environment Ročník 408; číslo 24; s. 6202 - 6209
Hlavní autoři:	Edmondson, J.L., Carroll, J.A., Price, E.A.C., Caporn, S.J.M.
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Kidlington Elsevier B.V 15.11.2010 [Amsterdam; New York]: Elsevier Science Elsevier
Témata:	acidification analysis Analysis methods Applied sciences Assessments Atmospheric pollution Atmospherics Bryophyta Bryophyta - classification Bryophyta - enzymology Bryophyta - metabolism Bryophytes Bryopsida Calluna Calluna - classification Calluna - enzymology Calluna - metabolism Calluna vulgaris classification correlation Deposition Ecosystem Ecosystems Environmental Monitoring enzymology Eutrophication Exact sciences and technology Heather moorland heathlands indicator species Litter long term experiments metabolism monophenol monooxygenase Monophenol Monooxygenase - metabolism Moorland nitrogen Nitrogen - analysis Nitrogen - metabolism Nitrogen deposition Phenol Phenol oxidase Pollution Soil Pollutants Soil Pollutants - analysis Soil Pollutants - metabolism species diversity surveys United Kingdom wet deposition United Kingdom Europe British Isles Nitrogen deposition Calluna vulgaris Bryophytes Heather moorland Phenol oxidase Heathland and moor Atmospheric fallout Enzyme Catechol oxidase Biological indicator Nitrogen Soil pollution Wet deposition Enzymatic activity Dicotyledones Angiospermae Air pollution Spermatophyta Ericaceae Oxidoreductases Organic compounds
ISSN:	0048-9697, 1879-1026, 1879-1026
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Popis
Shrnutí:	Heather moorlands are internationally important ecosystems that are highly sensitive to eutrophication and acidification by reactive atmospheric nitrogen (N) deposition. We used a long-term experiment simulating wet-deposition of N on heather moorland to identify potential bio-indicators of N deposition. These indicators were subsequently employed in a survey covering a N deposition gradient ranging from approximately 7 to 31 kg N ha − 1 yr − 1 , at selected sites throughout the UK. In this regional survey litter phenol oxidase activity and bryophyte species richness were negatively associated with N deposition. Calluna vulgaris N:P ratios and litter extractable N were positively correlated with N deposition. The use of the suite of four bio-indicators has the potential to provide rapid assessment of the extent of N saturation of heather moorland sites and moorland ecosystem functioning, and has significant advantages over reliance on single measures such as soil N status or an individual bio-indicator species.
Bibliografie:	http://dx.doi.org/10.1016/j.scitotenv.2010.08.060 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0048-9697 1879-1026 1879-1026
DOI:	10.1016/j.scitotenv.2010.08.060