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Lichen responses to...
Lichen responses to nitrogen and phosphorus additions can be explained by the different symbiont responses
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- Johansson, Otilia, 1979- (författare)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap
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- Olofsson, Johan, 1972- (författare)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Arcum
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- Giesler, Reiner, 1955- (författare)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Arcum
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- Palmqvist, Kristin (författare)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap
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(creator_code:org_t)
- 2011-04-28
- 2011
- Engelska.
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Ingår i: New Phytologist. - : Wiley. - 0028-646X .- 1469-8137. ; 191:3, s. 795-805
- Relaterad länk:
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https://nph.onlineli...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Responses to simulated nitrogen (N) deposition with or without added phosphorus (P) were investigated for three contrasting lichen species – the N-sensitive Alectoria sarmentosa, the more N-tolerant Platismatia glauca and the N2-fixing Lobaria pulmonaria– in a field experiment.To examine whether nutrient limitation differed between the photobiont and the mycobiont within the lichen, the biomass responses of the respective bionts were estimated.The lichenized algal cells were generally N-limited, because N-stimulated algal growth in all three species. The mycobiont was P-limited in one species (A. sarmentosa), but the growth response of the mycobionts was complex, as fungal growth is also dependent on a reliable carbon export from the photobiont, which may have been the reason for the decrease of the mycobiont with N addition in P. glauca.Our findings showed that P availability was an important factor when studying effects of N deposition, as P supply can both mitigate and intensify the negative effects of N on epiphytic lichens.
Ämnesord
- NATURVETENSKAP -- Biologi -- Botanik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Botany (hsv//eng)
Nyckelord
- chlorophyll a
- epiphytic lichens
- fertilization experiment
- growth rate
- nitrogen deposition
- nutrient limitation
- phosphorus
- symbiosis
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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