Incorporating reindeer grazing and damage by ozone in LPJ-GUESS for the BioDiv-Support project ...

• Main Authors: Lagergren, Fredrik, Olin, Stefan, Miller, Paul A.
• Format: Software
• Language: English
• Published: Zenodo 2023
• Subjects: Arctic; Mountain; Herbivory; Air pollution; Climate change
• Online Access: https://dx.doi.org/10.5281/zenodo.8262589; https://zenodo.org/record/8262589

This model code was developed for the BioDiv-Support project (https://www.smhi.se/en/research/research-departments/meteorology/biodiv-support-1.145930), which studied the impact of climate change and air pollutions on the vegetation in mountain regions in Europe. Reindeer browsing and grazing functionality was added in a new function, grazebrowse, in management.cpp. Plant killing from reindeer trampling was added in the mortality_guess function in vegdynam.cpp. Functionality of ozone stress was added in a new function, ozone_stress, that was called by the function canopy_exchange in canexch.cpp. With the new functions there are five new plant functional type (PFT) specific parameters: browse_pref preference value for browsing 0-10 tramp_frac trampling value for mortality from browsers 0-10 PODy O 3 deposition threshold for toxicity PODy_k slope in the effect of exceeding PODy PODy_m constant in the effect of exceeding PODy There are also six general settings for the reindeer browsing and trampling: ...