Institute of Marine Research
Simulations of food-web dynamics using the Non-Deterministic Network Dynamic (NDND) model
Recommended citation:
Elliot Sivel, Benjamin Planque, Ulf Lindstrøm, Nigel G. Yoccoz
Simulations of food-web dynamics using the Non-Deterministic Network Dynamic (NDND) model
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Abstract
Simulations of food-web dynamics using the Non-Deterministic Network Dynamic (NDND) model for individual and combined scenarios of temperature and fishing mortality. The temperature scenariis include an increase of temperature by 1 or 2 degrees, no variation, and a decrease by 1 degrees. The fishing mortality scenariis include a reduction by 50%, no variation, and an increase by 25% or 50% of fishing mortality. For each scenario, a set of 1000 trajectories were simulated for each group of the food-web. The output for each scenario is saved in an individual file. In each file, the « NDNDData » part summarises the setup for the simulation (parameter values, number of runs, time). The Output part corresponds to the simulated time-series merged into a single object. Each run is identified with an ID corresponding to the number of the run. The « Output » also contains the time-series of simulated flows. The structure of the flows object is identical to the biomass one except that it is shorter by 1 row per run (The simulation ends with the estimation of biomass for the last year and does not estimate the trophic flows associated)
Scientific keywords:
EARTH SCIENCE> BIOSPHERE> ECOLOGICAL DYNAMICS> ECOSYSTEM FUNCTIONS> FOOD-WEB DYNAMICS
Key words:
Food-web model, Chance and Necessity, Non-Deterministic Network Dynamic model, Scenario simulations, Fishing mortality, Temperature, Combined effects, Time-series, Barents Sea.