Results 91 to 100 of about 2,480,735 (251)

Photometallobiocatalytic Asymmetric Radical‐Mediated Cross‐Coupling of Organotrifluoroborate Salts and Pyridotriazoles

open access: yesAngewandte Chemie, EarlyView.
An enantioselective photometallobiocatalytic cross‐coupling of pyridotriazoles and secondary alkyltrifluoroborate salts is developed. Cooperative catalysis using eosin B and an engineered protoglobin combines visible‐light‐mediated radical generation with enzymatic metal carbenoid activation, affording valuable N‐heterocyclic products in excellent ...
Huanan Wang   +5 more
wiley   +2 more sources

Prospering from nature: helping landowners protect and enhance ecosystem services [PDF]

open access: yes, 2013
2 pagesAround the country, ranchers and family forest landowners face complex challenges that threaten their ability to stay on the land and maintain their operations.
University of Oregon. Ecosystem Workforce Program
core   +1 more source

Phosphorus limitation on CO2 fertilization effect in tropical forests informed by a coupled biogeochemical model

open access: yesForest Ecosystems
Tropical forests store more than half of the world's terrestrial carbon (C) pool and account for one-third of global net primary productivity (NPP). Many terrestrial biosphere models (TBMs) estimate increased productivity in tropical forests throughout ...
Zhuonan Wang   +7 more
doaj   +1 more source

The role of venture‐financed startups in innovation for US agriculture

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract To evaluate the role played by startup companies in the innovation ecosystem of US agriculture, we compile a unique dataset of 6024 new entrants founded 1987–2019 that details their financing lifecycles, annual economic performance, and patenting activities.
Gregory D. Graff   +2 more
wiley   +1 more source

Modeling landscape net ecosystem productivity (LandNEP) under alternative management regimes

open access: yes, 2002
Forests have been considered as a major carbon sink within the global carbon budget. However, a fragmented forest landscape varies significantly in its composition and age structure, and the amount of carbon sequestered at this level remains generally ...
Thomas R. Crow E   +9 more
core   +1 more source

Corrigendum: Changes and net ecosystem productivity of terrestrial ecosystems and their influencing factors in China from 2000 to 2019. [PDF]

open access: yesFront Plant Sci, 2023
Huang Y   +9 more
europepmc   +1 more source

The causal effect of agricultural landscape simplification on Germany's grasslands during a compound drought and heatwave in 2018

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract Preserving ecosystem services, along with economic and environmental benefits, will require future landscape policies to identify and incorporate relevant landscape features. In this paper, we investigate the causal effect of agricultural landscape simplification on drought‐related grassland damages.
Marco Ferro   +5 more
wiley   +1 more source

The Distributional impact of dams: Evidence from cropland productivity in Africa [PDF]

open access: yes
We examine the distributional impact of major dams on cropland productivity in Africa. As our unit of analysis we use a scientifically based spatial breakdown of the continent that allows one to exactly define regions in terms of their upstream ...
Eric Strobl, Robert Strobl
core  

Reproductive stages in lowbush blueberry (Vaccinium angustifolium) occur earlier with increasing temperature

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Climate change is altering the timing of many plant phenological events, yet most studies focus on flowering, with less attention given to later reproductive stages such as fruit development and ripening. Vaccinium angustifolium (lowbush blueberry) is an important perennial berry species that may be sensitive to these changes.
Jenna Floyd   +5 more
wiley   +1 more source

Net ecosystem productivity of temperate and boreal forests after clearcutting - a Fluxnet-Canada measurement and modelling synthesis [PDF]

open access: yes, 2010
: Clearcutting strongly affects subsequent forest net ecosystem productivity (NEP). Hypotheses for ecological controls on NEP in the ecosystem model ecosys were tested with CO(2) fluxes measured by eddy covariance (EC) in three post-clearcut conifer ...
McCaughey, J. H.   +5 more
core   +1 more source

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