Abstract
Wildfires on degraded grasslands cause extensive soil erosion and cause environmental and economic damage worldwide. We conducted fertilizer, lime, and mulch trials to improve growth of trees planted in acid soils in degraded grasslands on the Micronesian islands of Guam, Rota, and Yap. Fertilizer application had no effect on height growth of Acacia auriculiformis seedlings on a Mollisol on Guam while lime application had a small but significant positive effect on height growth. Fertilizer application had a significant positive effect on height growth of Acacia confusa seedlings planted on an Oxisol on Rota but lime had no effect. Mulch application increased height growth of Swietenia macrophylla seedlings planted on an Oxisol on Yap but lime application had no effect. Collaboration between university researchers and local forestry agencies can improve reforestation success, but researchers need to consider local capabilities and local knowledge.
Highlights
IntroductionLime, and mulch trials to improve growth of trees planted in acid soils in degraded grasslands on the Micronesian islands of Guam, Rota, and
U.S Department of Agriculture, Forest Service, Reforestation, Nurseries, and Genetic Resources, Yap Department of Agriculture and Forestry, Yap, FM 96943, Federated States of Micronesia; Abstract: Wildfires on degraded grasslands cause extensive soil erosion and cause environmental and economic damage worldwide
While fire can be a naturally occurring ecosystem process where local flora and fauna are adapted to wildfires, e.g., [3], anthropogenic fires are one of the major causes of tropical forest destruction worldwide [4,5]
Summary
Lime, and mulch trials to improve growth of trees planted in acid soils in degraded grasslands on the Micronesian islands of Guam, Rota, and. Yap. Fertilizer application had no effect on height growth of Acacia auriculiformis seedlings on a Mollisol on Guam while lime application had a small but significant positive effect on height growth. Fertilizer application had a significant positive effect on height growth of Acacia confusa seedlings planted on an Oxisol on Rota but lime had no effect. We conducted a series of trials on the Micronesian islands of Guam, Rota (Commonwealth of the Northern Mariana Islands), and Yap (Federated States of Micronesia) in coordination with local forestry agencies. The immediate goal of the trials was to test solutions for improving success in reforestation, while the larger goal was to explore ways small agencies in isolated areas can develop adaptive management processes to improve their reforestation success
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