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Research Article | Open Access

Published on: 21 Sep 2026

Article ID: wjets.2026.i2101

Extreme Acid Stress in a Red Mung Bean (Vigna radiata) Microecosystem: An Ecotoxicological Perspective on Plant Failure and Fungal Emergence at pH 2
Nur Alia Najwa Asrin Yusairi 1 Siti Fatimah Az Zahra Nur Anbiah 1 Nur Akmal Hanim Ahmad Ahyad 1 Theyvaharthani Saravanan 1 Ainul Mardiah Alias 1 Ezani Ishak Hashim 1 Helmy Rozario Ahmad Yusof 1 Noraini Abu Bakar 1 Chee Kong Yap* 1

Environmental pH is a fundamental physico-chemical factor influencing organismal performance, nutrient availability, chemical behaviour and biological interactions. Although extreme pH conditions are expected to impair seed germination and plant development, different biological components may respond differently to the same environmental stress. This study evaluated the responses of red mung bean (Vigna radiata) across a broad aqueous pH gradient, with particular attention to the unexpected…

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Research Article | Open Access

Published on: 21 Sep 2026

Article ID: wjets.2026.i2102

Microscopic Evidence of Suspected Microplastic Ingestion in Guppies (Poecilia reticulata) from a Polluted Urban Drain on a University Campus: A Preliminary Study
Chee Kong Yap* 1 Mohamad Izzuddin Mohd Hadir 1 Muhammad Ammar Ramlee 1 Muzammil Mohd Latif 1 Muhd Aqil Syukran Baharuddin 1 Ezani Ishak Hashim 1 Helmy Rozario Ahmad Yusof 1 Rosimah Nulit 1 Wan Mohd Syazwan 1 Ahmad Dwi Setyawan 2,3 Yoshifumi Horie 4

Microplastic contamination is an increasing concern in freshwater ecosystems, particularly in urban drainage systems receiving domestic inputs and surface runoff. This study investigated the occurrence and morphological characteristics of suspected microplastics in the gut contents of guppies (Poecilia reticulata) collected in December 2025 from a polluted freshwater drain near Universiti Putra Malaysia, Selangor, Malaysia. Ten individual guppies were examined using light microscopy…

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Research Article | Open Access

Published on: 19 Sep 2026

Article ID: wjets.2026.i1902

Linking Benthic Condition, Reef Fish Biomass, and Coral Health Index in a Degraded Reef System of the Sembilan Archipelago
Mohamad Saupi Ismail* 1 Mei Ling Khoo 2 Md. Nizam Ismail 1 Zaidnuddin Ilias 1 Su Nyun Pau Suriyanti 2 Nur Farah Ain Zainee 2 Mohammad Rozaimi Jamaludin 2 Chee Kong Yap 3

The coral reef ecosystem of the Sembilan Archipelago was evaluated through an integrated ecological survey across eight islands. The study integrated benthic surveys using a point intercept transect method with underwater visual census techniques to evaluate coral reef condition, reef fish diversity, and ecosystem health. Findings suggest a fair ecological state of the islands’ reefs, with live coral cover averaging 26.05% and 46 hard coral species recorded. Diversity indices varied among…

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Perspective | Open Access

Published on: 18 Sep 2026

Article ID: wjets.2026.i1803

From an Ekman Grab to a Professorial Chair: A Reflection on Environmental Fieldwork, Perseverance, and Gratitude
Chee Kong Yap* 1

In June 2026, while clearing old papers from my office, I unexpectedly rediscovered photographs taken on 17 April 2002 during an environmental field sampling at Kampung Pasir Puteh, near Pasir Gudang in the Straits of Johore, Malaysia. The photographs showed a much younger version of myself manually deploying an Ekman grab for surface sediment sampling and participating in the collection of mussels from floating structures. My immediate reaction was humorous: Who is this stupid boy? I hardly…

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Research Article | Open Access

Published on: 12 Sep 2026

Article ID: wjets.2026.i1202

Deforestation and Biodiversity Loss: Ecological Consequences, Global Trends, and Conservation Imperatives
Adeel Asghar* 1

Deforestation and the consequent loss of biodiversity represent two of the most pressing and interlinked environmental crises of the twenty-first century. This paper provides a comprehensive examination of the global patterns of forest loss, the mechanisms through which deforestation drives species extinction, and the cascading ecological, climatic, and socioeconomic consequences that ensue. Drawing upon recent empirical data, satellite analyses, and peer reviewed literature, this study…

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Perspective | Open Access

Published on: 09 Sep 2026

Article ID: wjets.2026.i0904

A Reflection of the Sacred Power of Mount Fuji: A Personal Journey
Chee Kong Yap* 1

This reflective note explores the profound spiritual and symbolic role of Mount Fuji in shaping my academic and personal journey. From an obscured view during a professional trip in 2014 to awe inspiring full views in 2017, Mount Fuji became more than a natural landmark; it evolved into a sacred guide during moments of professional hardship. Faced with rejection, academic politics, and delayed promotion, I found renewed purpose and motivation through the recurring appearance of the mountain…

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Commentary | Open Access

Published on: 03 Sep 2026

Article ID: wjets.2026.i0303

From Theory to Classroom Reality: Reflections on a Teaching Practicum in an Urban Public Secondary School
Chee Kong Yap* 1 Nur Wafaa Aqilah Mohd Ridzuan 1 Mashitah ShikhMaidin 1 Shahrizim Zulkifly 1

Teaching practicum constitutes one of the most important components of teacher education because it provides opportunities for pre-service teachers to translate educational theories into authentic classroom practice. Through direct engagement with students, teachers, administrators, and school communities, pre-service teachers develop pedagogical competence, classroom management skills, professional communication, and reflective thinking that cannot be fully acquired through university…

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Research Article | Open Access

Published on: 12 Aug 2026

Article ID: wjets.2026.h1202

Water Bird Diversity as an Indicator of Coastal Health and Pollution: A Narrative Review with SWOT Perspectives
Chee Kong Yap* 1 Ahmad Dwi Setyawan 2,3 Yoshifumi Horie 4

Coastal ecosystems are among the world's most productive environments, supporting fisheries, biodiversity, carbon sequestration, nutrient cycling, shoreline stabilization, and numerous ecosystem services essential for human well-being. However, rapid urbanization, industrialization, land reclamation, agricultural expansion, aquaculture, tourism development, and climate change have accelerated habitat degradation and pollution across coastal regions. These pressures have highlighted the need…

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Perspective | Open Access

Published on: 12 Aug 2026

Article ID: wjets.2026.h1203

The Invasive Amazon Sailfin Catfish (Pterygoplichthys spp.) as a Potential Biomonitor of Polluted River Ecosystems in Malaysia: An Ecotoxicological Reflection
Chee Kong Yap* 1 Mohammad Noor Amal Azmai 1 Zackheus Anak Chengai 1 Mohammad Amirul Faiz Zulkiply 1 Heldino Hezrey Eldridge 1 Sayed Muhamad Daniel Sayed Shamsul Effendi 1

Biomonitoring is a fundamental component of ecotoxicology, providing insights into environmental quality through the responses of living organisms to pollution and habitat degradation. Traditionally, biomonitoring programmes have focused on species that accumulate contaminants or exhibit measurable physiological responses to environmental stress. In Malaysia, the invasive Amazon sailfin catfish (Pterygoplichthys spp.), commonly known as ikan bandaraya, has become widespread in urban and…

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Perspective | Open Access

Published on: 10 Aug 2026

Article ID: wjets.2026.h1001

Reflections from the Filthy Mud: Environmental Wisdom and Coastal Pollution in Industrial Corridors
Chee Kong Yap* 1

This paper is a reflective synthesis of long-term environmental monitoring and personal experience from two of Malaysia’s most polluted coastal ecosystems: Kuala Juru in Penang and Kg. Pasir Puteh in Southern Johore. Drawing upon empirical evidence collected in 2004 and 2005 on elevated levels of heavy metals in mussels (Perna viridis) and surface sediments, this narrative integrates ecological data with moral teachings expressed through proverbs from Hindu, Malay, Chinese, and English…

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