Results 11 to 20 of about 493 (122)

IAM-FIRE: A Climate Emulator-Based Framework to Project Wildfire Impacts and Risks for Integrated Assessment Models. [PDF]

Glob Chang Biol
Current models can overestimate how much carbon forests can store if they ignore the growing threat of wildfires. To solve this, we develop a new tool called IAM‐FIRE to predict global wildfires and associated carbon emissions through the year 2100. The results show how future fire impacts depend on human choices. If we rapidly cut emissions and ensure
Rouhette T, Van de Ven DJ, Narayan K, Tebaldi C, Perkins O, Haas O, Escobar N.   +6 more
europepmc   +2 more sources

An eco-evolutionary optimality model explains the acclimated temperature response of photosynthesis. [PDF]

New Phytol
Summary The optimal temperature of photosynthesis (Topt) generally increases with plant growth temperature. Changes in Topt are associated with changes in the maximum carboxylation capacity at 25°C (Vcmax25) and the maximum electron transport rate at 25°C (Jmax25). The ratio between Jmax25 and Vcmax25 declines with warming.
Gan W, Alizadeh N, Best M, Vidale PL, Prentice IC, Harrison SP.   +5 more
europepmc   +2 more sources

Global Assessment of Environmental and Plant-Trait Influences on Root: Shoot Biomass Ratios. [PDF]

Glob Chang Biol
We assembled a large global dataset by combining several previous compilations to test eco‐evolutionary optimality (EEO) hypotheses about how plants allocate carbon above‐ and below‐ground (root: shoot biomass ratios). Our analysis shows how carbon allocation in woody and herbaceous plants responds to environmental conditions and plant traits.
Ding R, Nóbrega RLB, Prentice IC.
europepmc   +2 more sources

Global land surface 250 m 8 d fraction of absorbed photosynthetically active radiation (FAPAR) product from 2000 to 2021 [PDF]

Earth System Science Data, 2022
The fraction of absorbed photosynthetically active radiation (FAPAR) is a critical land surface variable for carbon cycle modeling and ecological monitoring.
H. Ma, S. Liang, C. Xiong, Q. Wang, A. Jia, B. Li   +5 more
doaj   +1 more source

Fractional Vegetation Cover Derived from UAV and Sentinel-2 Imagery as a Proxy for In Situ FAPAR in a Dense Mixed-Coniferous Forest?

Remote Sensing, 2022
The fraction of absorbed photosynthetic active radiation (FAPAR) is an essential climate variable for assessing the productivity of ecosystems. Satellite remote sensing provides spatially distributed FAPAR products, but their accurate and efficient ...
Birgitta Putzenlechner, Philip Marzahn, Philipp Koal, Arturo Sánchez-Azofeifa   +3 more
doaj   +1 more source

Comparison of Absorbed and Intercepted Fractions of PAR for Individual Trees Based on Radiative Transfer Model Simulations

Remote Sensing, 2021
The fraction of absorbed photosynthetically active radiation (fAPAR) is a key parameter for estimating the gross primary production (GPP) of trees. For continuous, dense forest canopies, fAPAR, is often equated with the intercepted fraction, fIPAR.
Wojciech Wojnowski, Shanshan Wei, Wenjuan Li, Tiangang Yin, Xian-Xiang Li, Genevieve Lai Fern Ow, Mohamed Lokman Mohd Yusof, Andrew J. Whittle   +7 more
doaj   +1 more source

Generating high spatial resolution GLASS FAPAR product from Landsat images

Science of Remote Sensing, 2022
The fraction of absorbed photosynthetically active radiation (FAPAR) is an essential biophysical variable for monitoring vegetation growth and quantitatively describing the efficiency of light absorption by vegetation.
Huaan Jin, Ainong Li, Shunlin Liang, Han Ma, Xinyao Xie, Tian Liu, Tao He   +6 more
doaj   +1 more source

La formación de la cultura jurídica brasilera en la segunda mitad del siglo XIX

Precedente, 2010
Este estudio tiene por objeto identificar la existencia de una efectiva cultura jurídica brasilera en la segunda mitad del siglo XIX; nos preguntamos cuáles fueron las efectivas contribuciones para la formación de esta cultura jurídica en nuestro país ...
Breezy Vizeu
doaj   +1 more source

Mapping the density of giant trees in the Amazon. [PDF]

New Phytol
Summary Tall trees (height ≥ 60 m) are keystone elements of tropical forests, strongly influencing biodiversity, carbon storage, and ecosystem resilience. Yet, their density and spatial distribution remain poorly quantified, especially in remote Amazonian regions, limiting our understanding of their ecological roles and contribution to forest–climate ...
de Lima RB, da Silva DAS, Nunes MH, Bittencourt PRL, Groenendyk P, de Oliveira CP, Granato-Souza D, Caraciolo Ferreira RL, Aleixo da Silva JA, Aguirre-Gutiérrez J, Jackson T, de Matos Filho JR, Aparício PDS, da Silva JPG, de Toledo JJ, Guedes MC, de Almeida DRA, Higuchi N, Wagner FH, Ometto JP, Görgens EB.   +20 more
europepmc   +2 more sources

A RELAÇÃO ENTRE DIREITO E MORAL: uma análise a partir do princípio da moralidade

Revista Eletrônica Direito e Política, 2008
O presente trabalho tem como objeto central a tratativa da relação entre direito e moral. Dessa forma, desde o início dos tempos esses dois institutos se entrelaçam e se separam de forma abrupta (dependendo do contexto).
Carolina de Freitas Paladino
doaj   +1 more source