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Taddeo Ssenyonga, Øyvind Frette, Børge Hamre, Knut Stamnes, Dennis Muyimbwa, Nicolausi Ssebiyonga and Jakob J. Stamnes
We present an algorithm for simultaneous retrieval of aerosol and marine parameters in coastal waters. The algorithm is based on a radiative transfer forward model for a coupled atmosphere-ocean system, which is used to train a radial basis function neur...
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Sally F. Abo El-Ezz, Lo?ay A. A., Nadi Awad Al-Harbi, Salem Mesfir Al-Qahtani, Hitham M. Allam, Mohamed A. Abdein and Zinab A. Abdelgawad
Magnesium (Mg) is the most essential element constituent in chlorophyll molecules that regulates photosynthesis processes. The physiological response of ?Superior Seedless? grapes was evaluated under different foliar magnesium fertilization such as sulfa...
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Andrzej Bielski and Cezary Tos
This study examines the chlorophyll a content and turbidity in the shallow dam reservoir of Lake Dobczyce. The analysis of satellite images for thirteen wavelength ranges enabled the selection of wavelengths applicable for a remote determination of chlor...
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Hyeonji Bae, Dabin Lee, Jae Joong Kang, Jae Hyung Lee, Naeun Jo, Kwanwoo Kim, Hyo Keun Jang, Myung Joon Kim, Yejin Kim, Jae-Il Kwon and Sang Heon Lee
The cellular macromolecular contents and energy value of phytoplankton as primary food source determine the growth of higher trophic levels, affecting the balance and sustainability of oceanic food webs. Especially, proteins are more directly linked with...
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Jieqiong Su, Xuan Wang, Shouyan Zhao, Bin Chen, Chunhui Li and Zhifeng Yang
With decreasing water availability as a result of climate change and human activities, analysis of the influential factors and variation trends of chlorophyll a has become important to prevent reservoir eutrophication and ensure water supply safety. In t...
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Yan Ma, Jiao Wang, Yu Sun, Yu Dong, Hongyu Cai, Imtiaz Hussain Raja, Tongjun Guo and Sujiang Zhang
(1) Background: Hydroponic forage plays an increasingly important role in animal breeding during winter and spring in arid and cold regions due to its rich nutrient and good palatability. In the present study, the profiles of growth, physiological indexe...
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Leon Catipovic, Frano Matic, Hrvoje Kalinic, Shubha Sathyendranath, Tomislav ?upanovic, James Dingle and Thomas Jackson
This work represents a modification of the Context Conditional Generative Adversarial Network as a novel implementation of a non-linear gap reconstruction approach of missing satellite-derived chlorophyll a concentration data. By adjusting the loss funct...
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Valery Bondur, Viktor Zamshin, Olga Chvertkova, Ekaterina Matrosova and Vasilisa Khodaeva
In this paper, the causes of the anomalous harmful algal bloom which occurred in the fall of 2020 in Kamchatka have been detected and analyzed using a long-term time series of heterogeneous satellite and simulated data with respect to the sea surface hei...
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Sheng-Yuan Teng, Nan-Jay Su, Ming-An Lee, Kuo-Wei Lan, Yi Chang, Jinn-Shing Weng, Yi-Chen Wang, Riah Irawati Sihombing and Ali Haghi Vayghan
Black sea bream, Acanthopagrus schlegelii, is among the most commercially valuable species in the coastal fishery industry and marine ecosystems. Catch data comprising capture locations for the gillnet fisheries, remotely sensed environmental data (i.e.,...
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Thaís R. Benevides T. Aranha, Jean-Michel Martinez, Enio P. Souza, Mário U. G. Barros and Eduardo Sávio P. R. Martins
In this paper, the authors use remote-sensing images to monitor the water quality of reservoirs located in the semiarid region of Northeast Brazil. Sentinel-2 MSI TOA Level 1C reflectance images were used to remotely estimate the concentration of chlorop...
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Alla V. Varenik and Darya V. Kalinskaya
This paper focuses on the atmospheric dust transport effect on the changes in chlorophyll-A concentration in the Black Sea surface layer. In order to assess the input of nutrients with atmospheric precipitations at the Crimean coast of the Black Sea, the...
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Cheng He, Youru Yao, Xiaoman Lu, Mingnan Chen, Weichun Ma and Liguo Zhou
In estuary areas, meteorological conditions have become unstable under the continuous effects of climate change, and the ecological backgrounds of such areas have strongly been influenced by anthropic activities. Consequently, the water quality of these ...
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Jian Yang, Lin Du, Shuo Shi, Wei Gong, Jia Sun and Biwu Chen
Leaf nitrogen concentration (LNC) is a major biochemical parameter for estimating photosynthetic efficiency and crop yields. Laser-induced fluorescence, which is a promising potential technology, has been widely used to estimate the growth status of crop...
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Nguyen Thi Thu Ha, Nguyen Thien Phuong Thao, Katsuaki Koike and Mai Trong Nhuan
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Liguo Zhou, Bo Xu, Weichun Ma, Bin Zhao, Linna Li and Hongyan Huai
Chlorophyll-a (Chl-a) concentration is considered as a key indicator of the eutrophic status of inland water bodies. Various algorithms have been developed for estimating Chl-a in order to improve the accuracy of predictive models. The objective of this ...
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Shichao Wang, Jun Song, Junru Guo, Yanzhao Fu, Yu Cai and Linhui Wang
As one of the most significant disturbance sources in the upper marine environment of the South China Sea, tropical cyclones (typhoons) serve as a typical research subject for investigating the energy transfer process between the ocean and atmosphere. Ut...
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Weibo Wang, Jianhua Zheng, Chunsheng Jing and Jinping Zhao
A predetermined quanta-to-energy ratio is often used in many ecosystem models to transform photosynthetically radiant flux density into photosynthetic photon flux density when light penetrates seawater. The calculation formula of the ratio is reduced in ...
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Jacopo Agagliate, Rüdiger Röttgers, Kerstin Heymann and David McKee
Models of particle density and of organic carbon and chlorophyll-a intraparticle concentration were applied to particle size distributions and particle real refractive index distributions determined from flow cytometry measurements of natural seawater sa...
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Beata Ferencz and Jaroslaw Dawidek
The role of confluence (flowability) in shaping the concentration of dissolved oxygen (DO), chlorophyll-a (chl-a) and pH was determined using a model approach. The calculations considered both horizontal and vertical variability of parameters. There was ...
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Altayeb A. Obaid, Elhadi M. Adam, K. Adem Ali and Tamiru A. Abiye
The Vaal Dam catchment, which is the source of potable water for Gauteng province, is characterized by diverse human activities, and the dam encounters significant nutrient input from multiple sources within its catchment. As a result, there has been a r...
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