Claim · model-written summary
Higher wastage yielded lower optimal reindeer numbers and net revenues.
Verbatim
e0“With a higher value for wastage, reindeer numbers and net revenues were lower in the economically optimal solutions.”
Title
Parameterization and validation of an ungulate‐pasture model
Antti‐Juhani Pekkarinen; Jouko Kumpula; Olli Tahvonen Ecology and Evolution 2017. doi:10.1002/ece3.3358
Other claims from this paper (7)
- Method / resource The model described changes in lichen pastures caused by reindeer grazing and trampling with modeling efficiency 0.75.
- Observation At current biomass in northernmost Finland, winter lichen wastage ranged from zero to once lichen intake.
- Observation At current biomass in northernmost Finland, summer lichen wastage ranged from six to ten times lichen intake.
- Association Higher wastage favored supplementary feeding in the optimal steady state.
- Observation Actual reindeer numbers exceeded model optimal steady-state numbers in 18 of 20 districts.
- Recommendation Wastage from trampling and other causes should be quantified with data for management recommendations.
- Recommendation Seasonal pasture rotation should prevent heavy trampling of winter lichen pastures in summer.
