Treeline dynamics in Siberia under changing climates as inferred from an individual-based model for Larix, supplementary material ...

• Main Authors: Kruse, Stefan, Wieczorek, Mareike, Jeltsch, Florian, Herzschuh, Ulrike
• Format: Dataset
• Language: English
• Published: PANGAEA 2016
• Subjects: File content; File name; File format; File size; Uniform resource locator/link to file; Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn; permafrost; Taymyr; Taymyr Peninsula; Siberia
• Online Access: https://dx.doi.org/10.1594/pangaea.863584; https://doi.pangaea.de/10.1594/PANGAEA.863584

Siberian boreal forests are expected to expand northwards in the course of global warming. However, processes of the treeline ecotone transition, as well astiming and related climate feedbacks are still not understood. Here, we present 'Larix Vegetation Simulator' LAVESI, an individual-based spatially-explicit model that can simulate Larix gmelinii (RUPR.) RUPR. stand dynamics in an attempt to improve our understanding about past and future treeline movements under changing climates. The relevant processes (growth, seed production and dispersal, establishment and mortality) are incorporated and adjusted to observation data mainly gained from the literature. Results of a local sensitivity analysis support the robustness of the model's parameterization by giving relatively small sensitivity values. We tested the model by simulating tree stands under modern climate across the whole Taymyr Peninsula, north-central Siberia (c. 64-80° N; 92-119° E). We find tree densities similar to observed forests in the ... : Stand densities and modeled population dynamics as trees per ha (mean and standard deviation for 10-30 simulation repeats) are interpolated over yearly mean temperatures and precipitation sums of years 1960-1990. Simulations were performed with the individual-based model LAVESI using weather data on the Taymyr Peninsula (63.75-79.75° N and 91.75-118.75° E at a 0.5° latitude and longitude resolution) from CRU TS 3.22 (Harris et al., 2014). ...