%0 Thesis %1 Erskine_97 %A Erskine, P. D. %D 1997 %K bibtex-import, citeulikeExport freezing, solutes, subantarctic %T The impact of environmental stress on plant nitrogen utilisation in Australian ecosystems

@phdthesis{Erskine_97, added-at = {2019-03-31T01:14:40.000+0100}, author = {Erskine, P. D.}, biburl = {https://www.bibsonomy.org/bibtex/213c8e71ddbb7ba356453ccd53b585bbd/dianella}, citeulike-article-id = {1523676}, comment = {(private-note)CHapter 6: Nitrogen cycling and temperature stress on plants from SUbantarctic Macquarie Island Accumulated soluble sugars and proteins as an indicator of stress along with Fv/Fm Penguin faeces have a high nitrogen content. N from Animals that shit on the beach probably gets leached through the sand back into the ocean. But royal penguins nest further inland and have more of an effect 4x higher N in soil in excrement zone of rookeries as compared to elsewhere on the island Mainly ammonium Higher cphyll content, higher leaf nitrate in leaves (incl foliosa) closer to rookery (no sig diff NRA) P. annua has a higher ability to assimilate N than P. foliosa. Even at higher altitudes than the colony, there was still high N (lower than directly around the colony, but still high) enough to suggest that plants on Macca are not nitrogen limited. N contents comparable with Eutrophic European vegetation. Upland sites obtain their N from atmospheric deposition of volatilised ammonia. When grown in controlled environment, Acaena magellanica leaves didn't survive sub-zero temperatures (but grew new ones on rewarming) it didn't accumulate sucrose either Sucrose was accumulated on freezing. (in cookii, Fol and Stilbo) (freezing for a few days) Lindeboom estimated that on Marion island more than 10\% of the nitrogen from a penguin rookery reaches the inland vegetation. Nitrogen content ranged from 1.7 to 2.3\% away from the colony and >2.5\% close to the colony. N contents of this magnitude suggest the plants aren't nitrogen limited and are comparable with some plants in European eutrophic vegetation (Pearson and Stewart 1993)}, interhash = {62e6044b379ea2c5afb69b2f7763240c}, intrahash = {13c8e71ddbb7ba356453ccd53b585bbd}, keywords = {bibtex-import, citeulikeExport freezing, solutes, subantarctic}, posted-at = {2007-07-31 06:15:51}, priority = {2}, school = {University of Queensland}, timestamp = {2019-03-31T01:16:26.000+0100}, title = {{The impact of environmental stress on plant nitrogen utilisation in Australian ecosystems}}, year = 1997 }