OALib Journal
  OALib Journal is an all-in-one open access journal (ISSN Print: 2333-9705, ISSN Online: 2333-9721). It accepts a manuscript for the peer-review processing, typesetting, publication and then allocated to one of the 322 subject areas. The article processing charge for publishing in OALib journal is Only $99. For more details, please contact service@oalib.com. Submit now
               Articles    |    Aims & Scope    |    Instructions for Author     |    Editorial Board     |    Publishing Price    |    Indexing             


Go

Mar 16, 2021Open    AccessArticle

Further Analysis of 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 that explains why the loops emerge in SRR has been proposed, and the aim of this study was to validate this mechanism using 62 stocks that live in the waters around Japan, the Northwest Atlantic Fisheries Organization area, and elsewhere. We discuss the relationship between the age at maturity and the slope of the regression line adapted for the SRR data. Further, we discuss whether or not the...
Open Access Library J. Vol.8, 2021
Doi:10.4236/oalib.1107164


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
...
Open Access Library J. Vol.7, 2020
Doi:10.4236/oalib.1105990


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
...
Open Access Library J. Vol.6, 2019
Doi:10.4236/oalib.1105407


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
...
Open Access Library J. Vol.5, 2018
Doi:10.4236/oalib.1104454


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
...
Open Access Library J. Vol.5, 2018
Doi:10.4236/oalib.1104388


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
...
Open Access Library J. Vol.5, 2018
Doi:10.4236/oalib.1104341


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
...
Open Access Library J. Vol.5, 2018
Doi:10.4236/oalib.1104258


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
...
Open Access Library J. Vol.4, 2017
Doi:10.4236/oalib.1104198


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
...
Open Access Library J. Vol.4, 2017
Doi:10.4236/oalib.1103897


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;
...
Open Access Library J. Vol.4, 2017
Doi:10.4236/oalib.1103688


Go

Contact Us

service@oalib.com

QQ:3279437679

微信:OALib Journal