Ecosystem Services and Ecological Processes
Alnus acuminata: Valuable Timber Tree for Tropical HighlandsBackgroundAlnus acuminata, also known as alder, is a nitrogen-fixing tree native to tropical highlands from Mexico to northern Argentina. It thrives in elevations between 1,200 and 3,200 meters, with annual rainfall of 1,000 to 3,000 mm and temperatures ranging from 4°C to 27°C. This species plays a significant role in watershed protection, soil enrichment, and sustainable timber production. Its adaptability to moist soils, including riverbanks and landslides, and its resilience in disturbed areas make it a valuable pioneer species. Farmers in regions like Costa Rica have used Alnus acuminata in agroforestry systems for over 90 years, integrating it with pastureland and coffee cultivation. Open access copy available |
Biodiversity conservation in Costa Rica: a correspondence analysis between identifi ed biodiversity hotspots (Araceae, Arecaceae, Bromeliaceae, and Scarabaeinae) and conservation priority life zonesBackgroundOpen access copy available |
Evaluating alder-endophyte (Alnus acuminata-Frankia-Mycorrhizae) interactionsBackgroundThe study examines the interactions between Alnus acuminata (a nitrogen-fixing tree), Frankia (a nitrogen-fixing actinomycete), and vesicular-arbuscular mycorrhizae (VAM), specifically Glomus intra-radices. These symbiotic relationships are significant in upland areas of Costa Rica, Colombia, and Venezuela, where A. acuminata grows alongside pastures. Frankia forms root nodules that fix atmospheric nitrogen, while VAM enhances phosphorus uptake, crucial for plant growth in nutrient-poor soils. The study aims to understand the effects of these interactions on nitrogen fixation and seedling development under varying phosphorus levels. Available with subscription or purchase |
Erythrina (Leguminosae: Papilionoideae): A Versatile Genus for Agroforestry Systems in the Tropics.BackgroundThe genus Erythrina (Leguminosae) plays a crucial role in tropical agroforestry systems. These trees are adaptable and widely distributed in tropical and subtropical regions, with over 100 species globally. Erythrina species are known for their rapid growth, nitrogen-fixing capability, and adaptability to various environments, including low-fertility soils. Historically, they have been integrated into agricultural systems as shade trees, live fences, and forage sources. The diverse ecological benefits of Erythrina highlight its importance in addressing food security, environmental conservation, and rural livelihoods in tropical regions. Open access copy available |
Los bosques tropicales estacionalmente secos: ¿una prueba ácida para la restauración?BackgroundEl artículo explora los desafíos y avances en la restauración de bosques tropicales estacionalmente secos (BTES), uno de los ecosistemas más amenazados y menos estudiados del mundo. Aunque ocupan un 40% de las zonas tropicales, los BTES enfrentan altas tasas de deforestación, presión humana y vulnerabilidad al cambio climático, lo que subraya la necesidad urgente de estrategias efectivas de restauración. Open access copy available |
Uso del efecto de borde de la vegetación para la restauración ecológica del bosque tropicalBackgroundEl artículo aborda la fragmentación de hábitats causada por la deforestación, lo que genera cambios en los procesos ecológicos, específicamente el efecto de borde. Este efecto se caracteriza por la generación de microclimas variables y condiciones dinámicas del suelo en la interfase entre el bosque nativo y la vegetación adyacente inducida. A nivel global, los bosques tropicales han sufrido una deforestación considerable, impactando negativamente la biodiversidad y los ciclos ecológicos. Available with subscription or purchase |
The global status and trends of Payments for Ecosystem ServicesBackgroundPayments for Ecosystem Services (PES) have expanded significantly in recent decades. These schemes aim to internalize the positive externalities that natural systems generate. PES creates incentives for landholders to adopt behaviors that sustain ecosystem service provision and, in some cases, generates additional revenue streams for conservation. However, it captures only a small fraction of the total value that natural systems provide. Researchers face challenges in collecting comprehensive and reliable data on PES due to its relatively recent emergence and the diversity of practices across different geographic scales. Available with subscription or purchase |
The Effectiveness of Payments for Environmental ServicesBackgroundThe academic debate on how effectively Payments for Environmental Services (PES) achieve environmental and socioeconomic goals continues to grow. Researchers initially focused on defining the concept and documenting early field experiences. Over time, they shifted their attention to designing effective incentives, analyzing behavioral responses, conducting systematic reviews, and applying counterfactual-based impact evaluations to assess outcomes more rigorously. Available with subscription or purchase |
Understanding the importance of primary tropical forest protection as a mitigation strategyBackground:Primary tropical forests play a key role in the urgent task of mitigating climate change. Nevertheless, despite the recognition of forest-based mitigation strategies, the role of primary forest protection has not been explicitly considered in international policy negotiations. The authors aim to address this deficit by estimating primary tropical forest ecosystem carbon stocks and flows. Open access copy available |
Ecological filtering shapes the impacts of agricultural deforestation on biodiversityBackground:Deforestation for agriculture poses a significant threat to biodiversity. However, the severity of these impacts varies in agricultural landscapes. This study emphasizes the need to understand the factors underlying this variation to predict future biodiversity impacts of agricultural land use. While previous studies focused on landscape features and management regimes, this article introduces the concept of filtering, suggesting that natural and anthropogenic filtering may shape biodiversity responses at large geographical scales Available with subscription or purchase |
