dc.date.accessioned | 2016-10-21T15:19:56Z | |
dc.date.available | 2016-10-21T15:19:56Z | |
dc.date.issued | 2016 | |
dc.identifier.uri | http://hdl.handle.net/10852/52926 | |
dc.description.abstract | Phytoplankton acclimates to irradiance by regulating the cellular content of light-harvesting complexes, which are nitrogen (N) rich and phosphorus (P) poor. Irradiance is thus hypothesised to influence the cellular N : P ratio and the N : P defining the threshold between N and P limitation (the ‘optimal’ N : P). We tested this hypothesis by first addressing the response of the optimal N : P to irradiance in a controlled experiment with Chlamydomonas reinhardtii. Then, we did a meta-analysis of experimental data on optimal and cellular N : P ratios across light gradients to test the generality of an N : P to light response within species. In both the experiment and the meta-analysis, N : P ratios decreased with irradiance, indicating that factors affecting underwater irradiance, like depth and the composition of the water, may influence the relative N : P requirement. The effect of irradiance did not differ between optimal and cellular N : P ratios, but observations of optimal N : P were on average 2.8 times higher than observations of cellular N : P. | en_US |
dc.language.iso | en | en_US |
dc.relation.ispartof | Thrane, Jan-Erik (2016) Light, temperature, and nutrients as drivers for primary productivity in phytoplankton. Doctoral thesis. http://urn.nb.no/URN:NBN:no-56263 | |
dc.relation.uri | http://urn.nb.no/URN:NBN:no-56263 | |
dc.rights | Attribution-NonCommercial 4.0 International | |
dc.rights.uri | http://creativecommons.org/licenses/by-nc/4.0/ | |
dc.title | The impact of irradiance on optimal and cellular nitrogen to phosphorus ratios in phytoplankton | en_US |
dc.type | Journal article | en_US |
dc.creator.author | Thrane, Jan-Erik | |
dc.creator.author | Hessen, Dag O. | |
dc.creator.author | Andersen, Tom | |
dc.identifier.jtitle | Ecology Letters | |
dc.identifier.volume | 19 | |
dc.identifier.issue | 8 | |
dc.identifier.startpage | 880 | |
dc.identifier.endpage | 888 | |
dc.identifier.doi | http://dx.doi.org/10.1111/ele.12623 | |
dc.identifier.urn | URN:NBN:no-56261 | |
dc.type.document | Tidsskriftartikkel | en_US |
dc.type.peerreviewed | Peer reviewed | |
dc.identifier.fulltext | Fulltext https://www.duo.uio.no/bitstream/handle/10852/52926/1/Thrane-et-al-2016-Ecology-Letters.pdf | |
dc.type.version | PublishedVersion | |