Results 31 to 40 of about 114,080,372 (200)

Potential Efficiency of Earth Observation for Optimum Fishing Zone Detection of the Pelagic Sardinella aurita Species along the Mediterranean Coast of Egypt

Fishes, 2022
This research utilizes the efficiency of remotely sensed data and advanced digital image processing techniques to assist in monitoring for the management of marine fisheries in Egypt (south Mediterranean Sea region). A newly developed model is applied to
Elham M. Ali, Naglaa Zanaty, Islam Abou El-Magd   +2 more
doaj   +1 more source

Identifying Oceanic Responses with Validated Satellite Observations after the Passage of Typhoons in the Northern South China Sea

Remote Sensing, 2022
Tropical cyclone-induced upwelling has an important influence on ocean temperature and chlorophyll-a (Chl-a) concentrations, which are modified by the existence of mesoscale eddies. This paper investigates the regional dynamics and associated variability
Weifang Jin, Chujin Liang, Xinliang Tian, Junyang Hu, Tao Ding, Beifeng Zhou, Xiaoyan Chen, Yuntao Wang   +7 more
doaj   +1 more source

Relationship between chlorophyll a pigment and algal geometric biovolume determination in a floodplain lake (Ciénaga Ayapel, Córdoba-Colombia)

Revista Facultad de Ingeniería Universidad de Antioquia, 2012
The estimation of biomass of planktonic algae can be done by two methods, the quantification of geometric biovolume and chlorophyll a. This work which considers as environmental scenario the Ayapel-Cordoba flood-plain lake, introduces (presents) the two
Esnedy Hernández, Nestor Jaime Aguirre, Jaime Alberto Palacio   +2 more
doaj   +1 more source

A Bayesian approach for remote sensing of chlorophyll-a and associated retrieval uncertainty in oligotrophic and mesotrophic lakes [PDF]

, 2022
Satellite remote sensing of chlorophyll-a concentration (chla) in oligotrophic and mesotrophic lakes faces uncertainties from sources such as atmospheric correction, complex inherent optical property compositions, and imperfect algorithmic retrieval.
Kutser, T, Gupana, Remika, Spyrakos, E, Hunter, Peter D, Tyler, Andrew N, Lehmann, Moritz K, Tyler, AN, Werther, Mortimer, Gurlin, D, Gupana, R, Varley, Adam, Spyrakos, Evangelos, Odermatt, D, Gurlin, Daniela, Lehmann, MK, Simis, SGH, Kutser, Tiit, Varley, A, Werther, M, Simis, Stefan G H, Odermatt, Daniel, Hunter, PD   +21 more
core   +1 more source

Indirect method for quantifying the content of photosynthetic pigments in genotypes of dwarf elephant grass - doi: 10.4025/actascianimsci.v35i1.15178

Acta Scientiarum: Animal Sciences, 2012
Equations that indirectly associate the rates obtained by chlorophyll meter SPAD-502 to chlorophyll and carotenoids rates of dwarf elephant grass genotype are provided. Leaves of the genotype of dwarf elephant grass were employed.
Saulo Alberto do Carmo Araújo, Hernan Maldonado Vasquez, Alena Torres Neto, Eliemar Campostrini, Bruno Borges Deminicis, Érico da Silva Lima   +5 more
doaj   +1 more source

Variability in the Sea Surface Temperature Gradient and Its Impacts on Chlorophyll-a Concentration in the Kuroshio Extension

Remote Sensing, 2021
Sixteen years of satellite observational data in the Northwestern Pacific Ocean are used to describe the variability in the sea surface temperature (SST) gradient and its impact on chlorophyll-a concentrations (Chl-a).
Yuntao Wang, Rui Tang, Yi Yu, Fei Ji
doaj   +1 more source

Study some of Garden Cress (Lepidium sativum L.) Physiological Traits at Levels of Irrigation and Ascorbic Acid [PDF]

Ikufīziyuluzhī-i Giyāhān-i Zirā̒ī, 2017
Drought seriously reduces the quality and quantity of agronomic and horticultural plants. In such condition, using factors to reduce these effects on plants is indispensible. To evaluate the effect of water stress and different levels of ascorbic acid on
Zohre Akbari, Mansour Fazeli Rostampour, Leyla Zeya ebrahimi, Mohamad Reza Naroeirad   +3 more
doaj  

The Symbiodiniaceae and Bacterial Dynamic Composition of the Coral Echinopora gemmacea on Wuzhizhou Island

Journal of Marine Science and Engineering, 2023
Coral’s susceptibility to bleaching is determined by the strength of the intricate mutual relationships among coral symbionts. However, there is limited knowledge about how the symbiotic members of the scleractinian coral Echinopora gemmacea respond to ...
Zhuoran Li, Yushan Li, Wentao Zhu, Xiangbo Liu, Rou-Wen Chen, Aimin Wang, Xiubao Li   +6 more
doaj   +1 more source

Extinction coefficient for red-shifted chlorophylls: Chlorophyll d and chlorophyll f

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 2012
Both chlorophyll f and chlorophyll d are red-shifted chlorophylls in oxygenic photosynthetic organisms, which extend photon absorbance into the near infrared region. This expands the range of light that can be used to drive photosynthesis. Quantitative determination of chlorophylls is a crucial step in the investigation of chlorophyll-photosynthetic ...
Li, Yaqiong, Scales, Nicholas, Blankenship, Robert E., Willows, Robert D., Chen, Min   +4 more
openaire   +2 more sources

Photosynthetic responses of heat-stressed apple leaves to foliar application of salicylic and ascorbic acid

Photosynthetica
High temperatures have significant impacts on fruit tree production. Foliar spraying application of promoting agents can be a sustainable approach to managing high-temperature stress in orchards.
I. MIHALJEVIĆ, M. VILJEVAC VULETIĆ, V. TOMAŠ, Z. ZDUNIĆ, D. VUKOVIĆ   +4 more
doaj   +1 more source