Results 31 to 40 of about 465,731 (357)

Effects of Different Prolonged Light Durations on Survival, Growth and Physiology of the Eelgrass Zostera marina

open access: yesFrontiers in Environmental Science, 2022
Prolongation of light duration is one of the effective methods to improve the current seagrass propagation technique. We subjected plants of eelgrass Zostera marina to different prolonged light durations [0 (control), 2, 4, 6, 8 h d−1] for 6 weeks under ...
Yan-Hao Zhang   +5 more
doaj   +1 more source

Morpho-physiological Characteristics of Brassica napus L. Under Cadmium Stress [PDF]

open access: yesJournal of Genetic Resources, 2016
Cadmium as a heavy metal is also considered as a serious threat for the environment. This element is accumulated in soil through industrial processes as well as phosphate fertilizers and aggregates into the food chain.
Homa Mahmoodzadeh, Marzie Afsar
doaj   +1 more source

Chlorophyll lasers: Stimulated light emission by chlorophylls and Mg-free chlorophyll derivatives [PDF]

open access: yesProceedings of the National Academy of Sciences, 1977
Stimulated emission and lasing have been demonstrated for chlorophyll a , chlorophyll b , and bacteriochlorophyll a as well as for the Mg-free chlorophyll derivatives pheophytin a and methyl pheophorbide a .
J C, Hindman   +3 more
openaire   +2 more sources

Identification of senescence and death in Emiliania huxleyi and Thalassiosira pseudonana: Cell staining, chlorophyll alterations, and dimethylsulfoniopropionate (DMSP) metabolism [PDF]

open access: yes, 2012
We measured membrane permeability, hydrolytic enzyme, and caspase-like activities using fluorescent cell stains to document changes caused by nutrient exhaustion in the coccolithophore Emiliania huxleyi and the diatom Thalassiosira pseudonana, during ...
Airs, Ruth L.   +6 more
core   +1 more source

Planning for the future, algae bloom dynamics in water management and ecosystem restoration efforts

open access: yesFrontiers in Water
Eutrophication and chronic harmful algal blooms (HABs) are a challenge for ecosystem managers and restoration planners. Drivers of HABs include nutrient availability, temperature patterns, atmospheric conditions, rainfall-runoff relationships, and lake ...
Paul Julian   +3 more
doaj   +1 more source

Symbiont diversity is not involved in depth acclimation in the Mediterranean sea whip Eunicella singularis [PDF]

open access: yes, 2011
In symbiotic cnidarians, acclimation to depth and lower irradiance can involve physiological changes in the photosynthetic dinoflagellate endosymbiont, such as increased chlorophyll content, or qualitative modifications in the symbiont population in ...
Allemand, D.   +7 more
core   +2 more sources

The concentration-independent effect of arbuscular mycorrhizal fungi on the tolerance of green foxtail to vanadium stress

open access: yesFrontiers in Plant Science
IntroductionArbuscular mycorrhizal fungi (AMF) show significant potential for improving plant tolerance to vanadium (V) stress. However, the pattern and physiological mechanisms behind this effect are not fully understood.MethodsTo investigate this, we ...
Shujuan Zhang   +8 more
doaj   +1 more source

Land cover classification using multi-temporal MERIS vegetation indices [PDF]

open access: yes, 2007
The spectral, spatial, and temporal resolutions of Envisat's Medium Resolution Imaging Spectrometer (MERIS) data are attractive for regional- to global-scale land cover mapping.
A. Mathur   +19 more
core   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Evaluation of the effects of aeration cycle and culture medium concentration on biomass qualitative and quantitative indices in microalga Spirulina as candidate for wastewater treatment [PDF]

open access: yesبوم‌شناسی آبزیان, 2015
Microalgal culture can be a combination of three environmental factors, treatment of wastewaters, production of renewable energy resources for replacement of fossil fuels and reduction of the greenhouse gas emissions.
Sasan Ghobadian   +3 more
doaj  

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