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    OALib 期刊
      OALib Journal (ISSN Print: 2333-9705, ISSN Online: 2333-9721)是一本多合一的开源期刊,以同行评审的方式出版发行文章,其所涵盖的研究领域多达311种领域。本刊发表的全部文章均可在期刊网站上免费阅读、下载、引用和传播。单篇文章出版费用为99美元。详情请咨询service@ 或 QQ: 3279437679。现在就去投稿!
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    Jan 16, 2020Open    AccessArticle

    Fish Pond Effluent Effect on Physicochemical Properties of Soils in Southern Guinea Savanna, Nigeria

    John Jiya Musa, Pius Olusegun Olufemi Dada, Johnson Kayode Adewumi, Otuaro Ebierni Akpoebidimiyen, Elijah Tsado Musa, Martins Yusuf Otache, Seun Yusuf
    This work studied the effect of fish pond wastewater, proximate and mineral analyses of the fish feeds from commercial fish ponds on receiving soils in the southern Guinea Savanna ecological zone of Minna, Nigeria. The study con-ducted during the dry seasons of the years 2015 and 2016 between January and May. Four sets of soil samples were collected at varying distances from the various fish ponds an
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    May 20, 2019Open    AccessArticle

    Observation of Humpback Whales (Megaptera novaeangliae) in the Waters Adjacent to the Chukotka Peninsula with Comparisons to Historical Sighting Data

    Vladimir V. Melnikov
    This paper presents data from shore-based and limited boat observations of the seasonal distributions of humpback whales in waters adjacent to the Chukotka Peninsula from 1994 and 2012. Under favourable ice conditions, humpback whales were spotted off the coast of the Chukotka Peninsula as early as the end of May. During the summer, humpback whales remained dispersed in the coastal waters of t
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    Mar 15, 2018Open    AccessArticle

    Detection of Horizontal Transfer of Housekeeping and Hydrocarbons Catabolism Genes in Bacterial Genus with Potential to Application in Bioremediation Process

    Edmo Montes Rodrigues, Fernanda de Souza Freitas, Tatiane de Paula Siqueira
    In silico analysis can be useful to infer about the horizontal gene transfer (HGT) as well as to deduce about the evolutionary relations of catabolic genes. In this study, we performed the analysis of two housekeeping genes (fabD and rpoD) and two catabolic gene
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    Mar 05, 2018Open    AccessArticle

    Epiphytic Bacterial Communities in Seagrass Meadows of Oligotrophic Waters of Andaman Sea

    Amrit Kumar Mishra, Raju Mohanraju
    The epiphytic microbial communities of seagrass (Cymodocea rotundata and Thalassia testudinum) along with sediments and seawater of the seagrass ecosystem of Andaman
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    Feb 28, 2018Open    AccessArticle

    The True Mechanism That Controls the Stock-Recruitment Relationship

    Kazumi Sakuramoto
    I propose a mechanism that controls the stock-recruitment relationship (SRR), which should replace traditional SRR models. The difference between the traditional SRR models and the model proposed herein is whether or not a density-dependent effect is assumed. The new mechanism elucidates the following: 1) why clockwise loops or anticlockwise loops are commonly observed in an actual SRR, and 2) the age at maturity (not a density-de
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    Jan 11, 2018Open    AccessArticle

    Sargassum, Gracilaria and Ulva Exhibit Positive Antimicrobial Activity against Human Pathogens

    Amrit Kumar Mishra
    Bacterial resistance to pharmaceutical drugs is on rise, which emphasizes the need for screening of new drugs from natural resources. Seaweeds from the marine ecosystem are important source of bioactive compounds making them one of the major subjects for screening of various pharmaceutical drugs. So here, we assessed the bacterial growth inhibitory functions of four seaweeds Sargassum wightii
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    Dec 29, 2017Open    AccessArticle

    Knowledge of Climate Change and the Perception of Nigeria’s Coastal Communities on the Occurrence of Sargassum natans and Sargassum fluitans

    Lucette Adet, Godwin Nmeka Nsofor, Kehinde Olufunso Ogunjobi, Brahima Camara
    Climate change effects threat life on earth especially economically poor areas. Among them is noticed the shifting of the algae species Sargassum natans and Sargassum fluitanss seaweeds from the Brazilian coast to new areas along the West African coastline. Their occurrence along the Nigerian
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    Sep 19, 2017Open    AccessArticle

    Are 20% B0, 20% Bunfished, and BMSY Valid as Reference Points for Fisheries Resource Management?

    Kazumi Sakuramoto
    The aim of this paper is to discuss the validity of 20% B0, 20% Bunfished and BMSY as reference points for managing fisheries resources. I reanalyzed eight stock-recruitment relationship (SRR) sets of data that were analyzed by Myers et al
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    Jun 19, 2017Open    AccessArticle

    Clockwise Loops and Anticlockwise Loops Observed in a Stock-Recruitment Relationship

    Kei Tanaka, Naoki Suzuki, Kazumi Sakuramoto
    Loop-shaped trajectories are commonly observed in the stock recruitment relationship (SRR). A mechanism has been proposed that explains why the loops emerge in SRR. The aim of this study is to validate the mechanism using data for the stocks of 24 fish species that live in the waters around Japan. The following three questions are examined: 1) whether or not loop shapes are detected in SRRs for all 24 stocks;
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    May 23, 2017Open    AccessArticle

    Correction of “A Recruitment Forecasting Model for the Pacific Stock of the Japanese Sardine (Sardinops melanostictus) That Does Not Assume Density-Dependent Effects”

    Kazumi Sakuramoto
    One error was found in the coding of the simulation program for reproducing the recruitment (R) and spawning stock biomass (SSB) of the Pacific stock of the Japanese sardine. As a result of this error, the maturity rate for age 1 in the simulation was found to be half of the value cited from the literature. The aim of this paper is to show the results when the error is corrected. When the error was corrected, the r
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