Soil Health and Management
Carbon sequestration in mangrove forestsBackgroundMangrove forests are highly valuable due to the ecological (e.g., sediment deposition, fish nurseries, protection from tropical storms) and economic (e.g., food, fuel) resources they provide. Carbon storage potential in mangroves is also a highly valuable characteristic, especially as a passive method of carbon dioxide capture and storage. In order to protect these important resources and services, it is necessary to create accurate analyses of the global potential and significance of carbon storage in mangroves. Open access copy available |
Strong Climate Mitigation Potential of Rewetting Oil Palm Plantations on Tropical PeatlandsBackgroundTropical peatlands store vast quantities of carbon and therefore play a crucial role in global climate regulation. In Indonesia, extensive areas of peatland have been drained and converted to oil palm plantations and other agricultural uses. Drainage exposes peat to oxygen, accelerating decomposition and releasing large amounts of carbon dioxide into the atmosphere. Since degraded peatlands are estimated to contribute significantly to global greenhouse gas emissions, restoration strategies such as peatland rewetting have gained increasing attention as potential natural climate solutions. Open access copy available |
Warming induces unexpectedly high soil respiration in a wet tropical forestBackgroundTropical forests play a key role in regulating the global carbon cycle, exchanging more carbon dioxide with the atmosphere than any other terrestrial biome. However, limited in situ experiments constrain understanding of their response to climate warming. Understanding these responses is crucial, as even small changes in soil respiration in tropical regions can substantially influence global carbon dynamics and climate feedbacks. Open access copy available |
Nitrogen Fixing Trees for Animal Production on Acid SoilsBackgroundNitrogen-fixing trees play a crucial role in improving pasture and livestock systems on acid soils, which are prevalent in tropical regions. Acid soils often challenge agricultural productivity due to low fertility and high aluminum toxicity. Nitrogen-fixing trees, such as Erythrina poeppigiana, Cratylia argentea, and Alnus acuminata, enhance soil chemistry and fertility by adding nitrogen through organic matter and improving physical soil properties like porosity and bulk density. They are integrated into silvopastoral systems, where trees and shrubs coexist with pastures, offering multiple benefits such as soil stabilization, increased forage quality, and diversified farm outputs. Open access copy available |
The soil organic carbon in particle-size separates under different regrowth forest stands of north eastern Costa RicaBACKGROUND:Costa Rica, having experienced significant deforestation from 1950 to 1984, now sees a rise in secondary forests due to land abandonment and reforestation efforts. These forests vary widely in soil carbon accumulation, influenced by the previous land use intensity and the age of the forest. The paper investigates the role of secondary forests in Costa Rica in soil organic carbon (SOC) sequestration, a critical component in understanding climate change mitigation potential. Available with subscription or purchase |
The soil C pool in different agroecosystems derived from the dry tropical forest of Guanacaste, Costa RicaBACKGROUND:Seasonally dry tropical forests, constituting 42% of all tropical forests, are critically endangered, with less than 0.1% protected in Pacific Mesoamerica. The preservation of these forests is severely threatened by the invasive, highly flammable grass Hyparrhenia rufa, which has aggressively colonized the area since the 1940s. The paper focuses on examining soil carbon pools across various ecosystems derived from these forests in Guanacaste, Costa Rica, emphasizing the urgent need for comprehensive research on their soil carbon dynamics. Available with subscription or purchase |
Carbon sequestration and nutrient cycling in agroforestry systems on degraded soils of Eastern Amazon, BrazilBackground:Among various approaches to forest restoration, passive restoration via natural regeneration stands out as the most cost-efective option. However, the resilience of the forest is heavily influenced by factors such as water availability, soil integrity, and the presence of seed dispersers in the landscape. In situations where resilience is low, successful restoration relies on active human interventions. Unfortunately, many restoration projects, especially those involving smallholders, face budget constraints. In such circumstances, Agroforestry Systems emerge as a restoration strategy that combines both socio-economic and ecological advantages. Available with subscription or purchase |
Tropical Rainforest Restoration Plantations Are Slow to Restore the Soil Biological and Organic Carbon Characteristics of Old Growth RainforestBackground:With widespread deforestation and land conversion posing significant threats to biodiversity and carbon sequestration, there is an urgent need to comprehend the intricate relationship between land use change, soil microbial communities, and soil organic carbon dynamics in tropical rainforest ecosystems. Open access copy available |
Forest Health and Global ChangeBackground:In addition to facing natural disruptions such as drought, windthrow, insect infestations, diseases, and fires, forests are increasingly grappling with intensified stressors of anthropogenic origin. These stressors arise directly through activities like logging and clearing or indirectly through climate change, air pollution, and invasive species. The pace of these human-induced disturbances surpasses the adaptability of evolutionary processes, thus shaping the future of global forests through intricate responses to multiple stressors spanning local to global scales. Available with subscription or purchase |
Soil Biological Activity, Carbon and Nitrogen Dynamics in Modified Coffee Agroforestry Systems in MexicoBackgroundCoffee agroforestry systems bring a plethora of economic, social, and ecological benefits. Specifically, they aid soil biological activity. In Mexico, due to cost and production challenges, coffee is being replaced by avocado plantations. The impact of coffee agroforestry systems on specific soil biological characteristics and processes is not fully understood. Nor are the impacts of avocado plantations on soil biological activity. Open access copy available |
