https://www.un-pub.eu/ojs/index.php/wjer <p align="justify"><strong>World Journal of Environmental Research (WJER)</strong> is an international peer-refereed journal which publishes global research articles about all aspects of environmental areas with the aim of sharing the findings of different environmental issues to provide contributions to the scientific studies.</p> <p><strong>Basic Rules</strong></p> <p>1) The Contac author must be one of the <strong>article authors</strong>. Other than the authors, no one else can submit the article. <strong>It is immediately rejected</strong>.</p> <p>2) Make sure that issues about publication ethics, copyright, authorship, figure formats, data, and references format have been appropriately considered.</p> <p>3) Ensure that all authors have approved the content of the submitted manuscript. Once a manuscript has been submitted, no author changes, additions or reductions can be made. In that case, the manuscript will be <strong>rejected at any stage</strong>.</p> <p>4) An author can publish a maximum of two articles per year.</p> <p>5) Manuscripts submitted to WJER Journal should neither been published before nor be under consideration for publication in another journal or conference.</p> <p>6) An article can have a maximum of six (6) authors.</p> BIRLESIK DUNYA YENILIK ARASTIRMA VE YAYINCILIK MERKEZI en-US World Journal of Environmental Research 2301-2641 <p>World Journal of Environmental Research is an Open Access Journal. All articles can be downloaded free of charge. Articles published in the Journal are Open-Access articles distributed under <strong><a href="https://creativecommons.org/licenses/by/4.0/">Attribution 4.0 International (CC BY 4.0)</a></strong></p> https://www.un-pub.eu/ojs/index.php/wjer/article/view/9026 <p>This study examined the variety and abundance of land snails in a specific rice field located in Lower Katingawan, Midsayap, Cotabato. Land snails are mollusks that dwell on land and possess spiral shells on their backs. Notably, no published research is available on land snails in the municipality of Midsayap, North Cotabato. The study identified three noteworthy species of land snails in the selected rice field, namely Paropeas achatinaceum, Achatina fulica, and Pomacea canaliculata, totaling 1048. The study utilized the quantitative-descriptive method and computed the diversity indices. Simpson's index was calculated, indicating a low probability of two randomly chosen individuals belonging to the same taxon. Shannon's index yielded a value indicating relatively low species richness and uneven distribution of individuals among taxa. These findings offer valuable insights into the community's structure and ecological significance, emphasizing the need for further research to comprehensively understand its diversity and dynamics.</p> <p><strong><em>Keywords:</em></strong> Biology; diversity indices; shells; snails; taxonomy; terrestrial ecosystem</p> Edgie Tadena Copyright (c) 2023 World Journal of Environmental Research https://creativecommons.org/licenses/by-sa/4.0 2023-12-21 2023-12-21 13 2 14 22 10.18844/wjer.v13i2.9026 https://www.un-pub.eu/ojs/index.php/wjer/article/view/9284 <p>The aim of this study was to assess the environmental pollutants present in the cobwebs found in selected lecture rooms; Mathematics lecture room (MTH), Chemistry lecture room (CHM), Biology lecture room (BIO) and Environmental Science lecture room (EMT) in the Faculty of Science, Federal University Dutse. Bacterial pollutants coupled with Arsenic (As) Lead (Pb) in the sampled cobwebs were isolated and identified using standard procedures. One-way Analysis of variance was used to determine the variation in the concentrations of Pb and As in the sampled cobwebs. <em>Staphylococcus aureus</em> (28.1%), <em>Bacillus</em> sp. (37.5%), <em>Streptococcus</em> sp. (18.8%), and <em>Streptobacillus</em> sp. (15.6%) were detected in all the cobwebs samples. MTH 4 had the highest Pb concentration (1.2800 mg/kg) while CHM 3 had the lowest (0.470 mg/kg) Pb concentration. CHM 3 and BIO 3 had very low concentrations of Pb, which were significantly different from each other (p˂0.05). This study has revealed that spider cobwebs can be an effective bio-indicator in determining indoor air quality.</p> <p><strong>Keywords:</strong> Indoor air, Cobwebs, Lecture rooms, Bacterial contaminants, Lead, Arsenic</p> <p>&nbsp;</p> Adeniyi Olarewaju Adeleye Nurudeen Jibrin Peter G. Shiaka Mohammed B. Yerima Copyright (c) 2024 World Journal of Environmental Research https://creativecommons.org/licenses/by-sa/4.0 2023-12-21 2023-12-21 13 2 23 32 10.18844/wjer.v13i2.9284