Lichen responses to nitrogen and phosphorus additions can be explained by the different symbiont responses. Johansson, O., Olofsson, J., Giesler, R., & Palmqvist, K. New Phytologist, 191(3):795–805, August, 2011. ![Lichen responses to nitrogen and phosphorus additions can be explained by the different symbiont responses [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex * •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.
@article{johansson_lichen_2011,
title = {Lichen responses to nitrogen and phosphorus additions can be explained by the different symbiont responses},
volume = {191},
issn = {1469-8137},
url = {http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2011.03739.x/abstract},
doi = {10.1111/j.1469-8137.2011.03739.x},
abstract = {* •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.},
language = {en},
number = {3},
urldate = {2017-02-07},
journal = {New Phytologist},
author = {Johansson, Otilia and Olofsson, Johan and Giesler, Reiner and Palmqvist, Kristin},
month = aug,
year = {2011},
keywords = {\#nosource, chlorophyll a, epiphytic lichens, fertilization experiment, growth rate, nitrogen deposition, nutrient limitation, phosphorus, symbiosis},
pages = {795--805},
}
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