Publications by authors named "Emma Wiik"
Conservation science needs more high-quality impact evaluations, especially ones that explore mechanisms of success or failure. Randomized control trials (RCTs) provide particularly robust evidence of the effectiveness of interventions (although they have been criticized as reductionist and unable to provide insights into mechanisms), but there have been few such experiments investigating conservation at the landscape scale. We explored the impact of Watershared, an incentive-based conservation program in the Bolivian Andes, with one of the few RCTs of landscape-scale conservation in existence.
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- Hardwater lakes, commonly found in human-influenced areas, face pollution from agricultural and urban nitrogen inputs, impacting carbon cycling and food web functions.
- Experiments showed that adding nitrogen significantly increased phytoplankton biomass and oxygen production, but the response of autotrophs plateaued at around 3 mg N per liter per week.
- The results indicate that nitrogen enrichment not only boosts plant life but also enhances CO2 absorption in these lakes, highlighting the sensitivity of CO2 exchanges to nitrogen pollution.