Results 31 to 40 of about 6,042,123 (195)

Estimating ocean net primary productivity from daily cycles of carbon biomass measured by profiling floats

open access: yesLimnology and Oceanography Letters, 2023
The dependence of net primary productivity (NPP), a central metric in ecology and biogeochemistry, on sunlight drives daily cycles in carbon biomass in the ocean's euphotic zone. In this study, we infer NPP from the daily cycle of biomass.
Adam C. Stoer, Katja Fennel
doaj   +1 more source

A Multi‐Software Approach to Assessing Photovoltaics Integration in Modern Enovoltaic Systems

open access: yesEnergy Science &Engineering, EarlyView.
Robust eno‐PV design methodology applied to a real case study Multi‐software 3D model developed to optimize PV panels‐vineyard configuration Energy yield nearly independent of tracker height, but reduced by wider row spacing Grape productivity improving with height and decreasing with spacing Energy generation and grape yield balanced by tuning PV ...
Erika Stracqualursi   +3 more
wiley   +1 more source

ANOVA of net primary productivity (NPP), harvest, net ecosystem carbon balance and net carbon flux during the wheat- and maize- growing seasons during the 2013–2015 rotation.

open access: yes, 2018
ANOVA of net primary productivity (NPP), harvest, net ecosystem carbon balance and net carbon flux during the wheat- and maize- growing seasons during the 2013–2015 rotation.
Xingli Lu (5720681)   +2 more
core   +1 more source

Tree-ring isotopes capture interannual vegetation productivity dynamics at the biome scale

open access: yesNature Communications, 2019
Historical and future trends in net primary productivity (NPP) and its sensitivity to global change are largely unknown because of the lack of long-term, high-resolution data.
Mathieu Levesque   +6 more
doaj   +1 more source

Asymmetric responses of primary productivity to altered precipitation simulated by ecosystem models across three long-term grassland sites [PDF]

open access: yesBiogeosciences, 2018
Field measurements of aboveground net primary productivity (ANPP) in temperate grasslands suggest that both positive and negative asymmetric responses to changes in precipitation (P) may occur.
D. Wu   +45 more
doaj   +1 more source

Electronic Nose‐Based Methanol Feedback Precision Control Strategy for High‐Yield Alkaline Phosphatase Fermentation by Hansenula polymorpha

open access: yesFood Bioengineering, EarlyView.
Establishment of Closed‐Loop Methanol Feedback Precision Control System for Alkaline Phosphatase by Hansenula polymorpha. The electronic nose screened model for methanol detection as the core technical logic of online gas quantification. Methanol feedback control strategy for greatly elevating alkaline phosphatase production.
Jian‐Guang Liang   +6 more
wiley   +1 more source

Comparing global models of terrestrial net primary productivity (NPP): The importance of water availability to primary productivity

open access: yes, 1999
Given that neither absolute measures nor direct model validations of global terrestrial net primary productivity (NPP) are feasible, intercomparison of global NPP models provides an effective tool to check model consistency. For this study, we tested the
Churkina, G.   +5 more
core   +1 more source

Nitrogen controls the net primary production of an alpine Kobresia meadow in the northern Qinghai‐Tibet Plateau

open access: yesEcology and Evolution, 2019
Net primary production (NPP) is a fundamental property of natural ecosystems. Understanding the temporal variations of NPP could provide new insights into the responses of communities to environmental factors.
Licong Dai   +10 more
doaj   +1 more source

Net primary productivity of forest stands in New Hampshire estimated from Landsat and MODIS satellite data

open access: yesCarbon Balance and Management, 2007
Background A simulation model that relies on satellite observations of vegetation cover from the Landsat 7 sensor and from the Moderate Resolution Imaging Spectroradiometer (MODIS) was used to estimate net primary productivity (NPP) of forest stands at ...
Genovese Vanessa   +3 more
doaj   +1 more source

Remote Sensing for Irrigation Water Management—The State of the Art and Prospects for Near‐Future Operations

open access: yesIrrigation and Drainage, EarlyView.
ABSTRACT A recent UN report describes many regions as facing ‘water bankruptcy,’ a condition in which available water resources can no longer meet existing demands. In practice, this means irrigation will likely bear the greatest burden of future water‐use reductions, a complicated and fraught decision to make given its critical role in food security ...
Wim G. M. Bastiaanssen   +30 more
wiley   +1 more source

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