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Intact tropical forests, free from substantial anthropogenic influence, store and sequester large amounts of atmospheric carbon but are currently neglected in international climate policy. We show that between 2000 and 2013, direct clearance of intact tropical forest areas accounted for 3.2% of gross carbon emissions from all deforestation across the pantropics. However, full carbon accounting requires the consideration of forgone carbon sequestration, selective logging, edge effects, and defaunation. When these factors were considered, the net carbon impact resulting from intact tropical forest loss between 2000 and 2013 increased by a factor of 6 (626%), from 0.34 (0.37 to 0.21) to 2.12 (2.85 to 1.00) petagrams of carbon (equivalent to approximately 2 years of global land use change emissions). The climate mitigation value of conserving the 549 million ha of tropical forest that remains intact is therefore significant but will soon dwindle if their rate of loss continues to accelerate.
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http://dx.doi.org/10.1126/sciadv.aax2546 | DOI Listing |
Adv Sci (Weinh)
September 2025
Key Laboratory of Emergency and Trauma of Ministry of Education, The First Affiliated Hospital, NHC Key Laboratory of Tropical Disease Control, School of Tropical Medicine & The Second Affiliated Hospital, Hainan Medical University, Haikou, 571199, China.
Circulating tumor cells (CTCs) carry intact tumor molecular information, making them invaluable for personalized cancer monitoring. However, conventional capture methods, relying on passive diffusion, suffer from low efficiency due to insufficient collision frequency, severely limiting clinical utility. Herein, a magnetic micromotor-functionalized DNA-array hunter (MMDA hunter) is developed by integrating enzyme-propelled micromotors, magnetic nanoparticles, and nucleic acid aptamers into distinct functional partitions of a DNA tile self-assembly structure.
View Article and Find Full Text PDFNew Phytol
September 2025
State Key Laboratory of Plant Diversity and Specialty Crops/Key Laboratory of National Forestry and Grassland Administration on Plant Conservation and Utilization in Southern China, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China.
Heterostyly is a polymorphic floral adaptation controlled by supergenes. The molecular basis of distyly has been investigated in diploid species from several unrelated families, but information is lacking for polyploid systems. Here, we address this knowledge gap in Schizomussaenda henryi, a tetraploid distylous species of Rubiaceae, the family with the greatest number of heterostylous species.
View Article and Find Full Text PDFCurr Biol
September 2025
Oosterland, Netherlands.
Tropical peatlands are globally significant ecosystems for carbon cycling and storage, hydrological regulation, and unique biodiversity. There is a diversity of tropical peatland types globally, but tropical peat-forming ecosystems are typically forested without the Sphagnum groundcover that is often characteristic of high-latitude peatlands. Here, we report on a unique tropical peatland situated in Belize that challenges our understanding of both tropical and extra-tropical peatlands owing to the presence of Sphagnum in the undergrowth.
View Article and Find Full Text PDFACS Omega
August 2025
Laboratório de Imunofarmacologia Parasitária, Disciplina de Parasitologia/Faculdade de Ciências Médicas Universidade do Estado do Rio de Janeiro, Rio de Janeiro 20550-170, Brazil.
The hemoflagellate protozoan is the etiologic agent of Chagas disease, one of the neglected tropical diseases endemic to Latin America with a high socioeconomic impact. Treatment remains restricted to two drugs, benznidazole and nifurtimox, which present several side effects and are ineffective in the chronic phase of the disease. The synthetic pterocarpanquinone LQB-118, a hybrid molecule synthesized from lapachol and pterocarpan, exhibits several biological activities, including antiparasitic effects similar to those of its precursors.
View Article and Find Full Text PDFAnimals (Basel)
August 2025
Negaunee Integrative Research Center, Field Museum of Natural History, 1400 South DuSable Shore Drive, Chicago, IL 60605, USA.
We used stable carbon and nitrogen isotope values in plants, fur, and bone to establish baseline isotopic variability and investigate food web dynamics for small mammals at Betampona Réserve Naturelle Intégrale (BRNI), which protects an isolated parcel of tropical lowland moist evergreen forest in central eastern Madagascar. We included foliage from four understory plant genera, 13 endemic mammal species (5 bats, 5 tenrecs, and 3 nesomyine rodents), and introduced and that were collected along a gradient of degraded to intact forest from the southern boundary to the interior of BRNI as well as nearby villages. Isotopic data indicate niche partitioning among mammal groups, as well as among species within each of the groups.
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