نتایج جستجو برای: biomass productivity index

تعداد نتایج: 532745  

Journal: :Scientific reports 2016
Silvia Berteotti Matteo Ballottari Roberto Bassi

Photosynthetic microalgae have a high potential for the production of biofuels and highly valued metabolites. However, their current industrial exploitation is limited by a productivity in photobioreactors that is low compared to potential productivity. The high cell density and pigment content of the surface layers of photosynthetic microalgae result in absorption of excess photons and energy ...

Journal: :Marine pollution bulletin 2013
Bayden D Russell Sean D Connell Sven Uthicke Nancy Muehllehner Katharina E Fabricius Jason M Hall-Spencer

While carbon capture and storage (CCS) is increasingly recognised as technologically possible, recent evidence from deep-sea CCS activities suggests that leakage from reservoirs may result in highly CO2 impacted biological communities. In contrast, shallow marine waters have higher primary productivity which may partially mitigate this leakage. We used natural CO2 seeps in shallow marine waters...

Journal: :Forests 2021

Forest productivity (increment of above-ground biomass) is determined by biodiversity but also stand structure attributes. However, the relative strengths these drivers in determining remain controversial subtropical forests. In this study, we analyzed a tree growth data from 500 plots with 20 ha mature forest eastern China. We used spatial simultaneous autoregressive error models to examine ef...

Journal: :آب و خاک 0
مریم اسمعیلی بهمن فرهادی بانسوله مختار قبادی

introduction: expansion of the area of oilseed crops such as soybean is one of the policies of iranian agricultural policy makers as iran is one of the major oilseed importers in the world. however, the area of this crop in kermanshah province is negligible, but it could be cultivated in most parts of this province. the quantity and quality of the produced grain could be affected by environment...

Journal: :European Research Studies Journal 2021

Purpose: The aim of the study was to measure and analyse productivity level agricultural activity in 25 European Union countries factors influencing this level. Approach/Methodology/Design: data covers years 2009-2019 obtained from EUROSTAT database. Aggregated Hicks-Moorsteen TFP total indices were used for measurement analysis. On basis average level, grouped into groups based on analysis the...

2009
A. K. Gilgen N. Buchmann

Water is an important resource for plant life. Since climate scenarios for Switzerland predict an average reduction of 20% in summer precipitation until 2070, understanding ecosystem responses to water shortage, e.g. in terms of plant productivity, is of major concern. Thus, we tested the effects of simulated summer drought on three managed grasslands along an altitudinal gradient in Switzerlan...

2015
Matthew J. Desmond Daniel W. Pritchard Christopher D. Hepburn

Light is the fundamental driver of primary productivity in the marine environment. Reduced light availability has the potential to alter the distribution, community composition, and productivity of key benthic primary producers, potentially reducing habitat and energy provision to coastal food webs. We compared the underwater light environment of macroalgal dominated shallow subtidal rocky reef...

2011
Camila Aguetoni Cambui Henrik Svennerstam Linda Gruffman Annika Nordin Ulrika Ganeteg Torgny Näsholm

Nitrogen (N) availability is a strong determinant of plant biomass partitioning, but the role of different N sources in this process is unknown. Plants inhabiting low productivity ecosystems typically partition a large share of total biomass to belowground structures. In these systems, organic N may often dominate plant available N. With increasing productivity, plant biomass partitioning shift...

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