Ergodic to Non-ergodic Behavior Transitions and Hysteresis in Ecosystem Models

11762 12 31827 3 44866 document 31827 Ergodic to Non-ergodic Behavior Transitions and Hysteresis in Ecosystem Models.pdf application/pdf dbc486832cc9d4d12350c4f9868f0f59 MD5 152031 2016-01-19 13:06:07 https://pure.iiasa.ac.at/id/eprint/11762/1/Ergodic%20to%20Non-ergodic%20Behavior%20Transitions%20and%20Hysteresis%20in%20Ecosystem%20Models.pdf 11762 1 1 application/pdf text Conference Poster en public cc_by_nc_sa

Ergodic to Non-ergodic Behavior Transitions and Hysteresis in Ecosystem Models.pdf

published 31828 1 44879 document 31828 indexcodes.txt text/plain 562682b5026a2ee6241820dd58c22eea MD5 2301 2016-01-19 13:15:41 https://pure.iiasa.ac.at/id/eprint/11762/2/indexcodes.txt 11762 2 2 text/plain other Generate index codes conversion from text to indexcodes en public

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http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/31827 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/31827 http://eprints.org/relation/issmallThumbnailVersionOf https://pure.iiasa.ac.at/id/document/31827 archive 2 disk0/00/01/17/62 2016-01-19 13:07:28 2023-06-14 13:23:47 2016-01-19 13:07:28 conference_item show 1 Pietsch S. 2054 0000-0001-6431-2212 Bednar J.E. Ergodic to Non-ergodic Behavior Transitions and Hysteresis in Ecosystem Models pub prog_esm A widely used concept in natural sciences is the ergodic principle stating that the temporal average state of system equals the average of single states of an ensemble of the system. Originally formulated by Boltzmann to describe the physics of an ideal gas, the ergodic principle was and still is applied in, for example, the assessment of developmental aspects of individuals, but also in the growth series concept of whole ecosystems. Hysteresis on the other hand describes the observable contrary of the ergodic principle, that is, that the current state of a system strictly depends on the individual temporal development steps, or that individual history is unequivocally important. This work will provide evidence for ergodic to non-ergodic transitions in the application of biogeochemical ecosystem models using the showcase of Congo Basin rainforests. Using a climate gradient from west to east, ergodic model behavior is shown for a virgin forest refuge, non-ergodic behavior for a current forest savannah mosaic and ergodic behavior again for large open savannahs. Additionally, the occurrence of hysteresis related to the prevailing initial vegetation will be demonstrated, whereby the non-ergodic phase along the climate gradient is shown to be more extensive if rainforest was the original vegetation, as opposed to rainforest establishing on non-forest sites. The combination of ergodic to non-ergodic transitions—sometimes referred to as catastrophic shifts in ecosystems—will be put into context with the changing distribution patterns of rainforest and savannah over the course of the Holocene. 2015-11 published 232 public poster Systems Analysis 2015 - A Conference in Celebration of Howard Raiffa Laxenburg, Austria 11 -13 November, 2015 conference FALSE FALSE no info:eu-repo/semantics/conferenceObject