Results 71 to 80 of about 442,631 (215)

Biomass production of tropical trees across space and time: The shifting roles of diameter growth and wood density

open access: yesJournal of Ecology, Volume 113, Issue 11, Page 3141-3158, November 2025.
Diameter growth is an important and good indicator of forest carbon production. However, size‐related changes in wood density, which are usually neglected, are critical for accurate short‐ and long‐term carbon assessments, especially in tropical humid sites.
Bruna Hornink   +18 more
wiley   +1 more source

Proposta de novos procedimentos de identificação de horizonte A húmico. [PDF]

open access: yes, 2017
No processo de revisão do SiBCS, várias tentativas para redefinir horizonte A húmico foram feitas (NAIME; SANTOS, 2007a e 2007b). Com a publicação da 2a edição do SiBCS foi incluído o procedimento que considera a média ponderada da argila e o teor de ...
LUMBRERAS, J. F.   +3 more
core  

Sequestro de carbono

open access: yesDRd - Desenvolvimento Regional em debate, 2019
A Bacia Hidrográfica do Rio Canoinhas (BHRC) ocupa uma superfície de 1.663km², representando cerca de 16% da área do Planalto Norte Catarinense (PNC). Esta região era originalmente coberta por ecossistemas naturais com predomínio da Floresta Ombrófila Mista (FOM), uma das formações do bioma Mata Atlântica. A Mata de Araucárias apresenta elevados níveis
openaire   +2 more sources

Growth–survival trade‐off in temperate trees is weak and restricted to late‐successional stages

open access: yesJournal of Ecology, Volume 113, Issue 11, Page 3466-3477, November 2025.
Our findings highlight a role of disturbances in filtering life‐history strategies and their potential impact on forest dynamics and global carbon cycling, but also a need to better understand the mediating processes of tree demographic trade‐offs.
Kauane Maiara Bordin   +12 more
wiley   +1 more source

A quantitative analysis of the phytoplankton of the Gulf of Panama II. On the relationship between C14 assimilation and the diatom standing crop [PDF]

open access: yes, 1965
ENGLISH: The Inter-American Tropical Tuna Commission has maintained a hydro-biological station in the Gulf of Panama located at 8°45'N, 79°23'W in connection with their ecological investigation of the anchoveta (Cetengraulis mysticetus), a tuna baitfish (
Smayda, Theodore J.
core  

The influence of hydrological seasonality and land use and cover on the relationship between dissolved organic carbon and carbon dioxide along a karst‐draining large tropical river

open access: yesLimnology and Oceanography, Volume 70, Issue 10, Page 2858-2871, October 2025.
Abstract The partial pressure of carbon dioxide (pCO2) in rivers is influenced by carbonate weathering, soil CO2, photosynthesis, and the mineralization of dissolved organic carbon (DOC). In tropical regions, elevated temperatures intensify these processes. However, their seasonal dynamics remain poorly understood in large karst‐draining rivers.
Daniel Cuevas‐Lara   +5 more
wiley   +1 more source

Efeitos do carbono na evolução de segundas-fases e na densificação do nitreto de alumínio com Y2O3 Effects of carbon on second-phase evolution and densification of aluminum nitride with Y2O3

open access: yesCerâmica, 2010
Foi investigado o efeito da adição do carbono na evolução de segundas-fases e na densificação do AlN com 4% em massa de Y2O3. A mudança de composição da segunda-fase do AlN com Y2O3 foi induzida pela adição de 0,5% e 1,0% em massa de carbono.
A. L. Molisani   +2 more
doaj   +1 more source

Carbono orgânico e as frações húmicas em diferentes horizontes diagnósticos de solos brasileiros. [PDF]

open access: yes, 2017
Avaliar o carbono orgânico e as frações húmicas quanto à participação, as relações e a capacidade de distinção de diferentes horizontes diagnósticos de solos brasileiros.bitstream/item/104971/1/Doc-156-Carbono-organico ...
ANJOS, L. H. C. dos   +3 more
core  

Effect of primate protection on threatened and endemic vertebrates, plants, ecosystem services, and future climate refugia

open access: yesConservation Biology, Volume 39, Issue 5, October 2025.
Abstract Primates, 69% of which are threatened with extinction, are the third most specious order of mammals. We used primates as model taxa to examine the umbrella effects of primates on ecosystem services and the protection of other vertebrates and seed plants in Yunnan Province, China.
Yin Yang   +21 more
wiley   +1 more source

Quantificação dos horizontes húmicos e dinâmica da decomposição de material foliar em solos florestais. [PDF]

open access: yes, 2017
Estudos sobre o balanço entre o carbono estocado na biomassa e o perdido por meio da composição, visando a quantificação do acúmulo líquido de carbono de um sistema florestal.bitstream/CNPS-2009-09/11577/1/comtec21_2003_quantificacao ...
CARMO, C. A. F. S. do   +3 more
core   +1 more source

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