Amarachi Paschaline Onyena

Dr. Amarachi Paschaline Onyena

Nigeria Maritime University
orcid
Marine and Environmental Scientist

Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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2 December 2021 in Microplastics
Verified
Journal Article
Open access
PDF file
Amarachi Paschaline OnyenaAmarachi Paschaline Onyena
Amarachi Paschaline Onyena
DADonald Chukwudi Aniche
Donald Chukwudi Aniche
BOBright Ogechi Ogbolu
Bright Ogechi Ogbolu
RRRefat Jahan Rakib
Refat Jahan Rakib
U Jamal Uddin
Jamal Uddin
Tony R. WalkerTony R. Walker
Tony R. Walker
Threats emerging from microplastic pollution in the marine environment have received much global attention. This review assessed sources, fate, and impacts of microplastics in marine ecosystems and identified gaps. Most studies document the ubiquity of microplastics and associated environmental effects. Effects include impacts to marine ecosystems, risks to biodiversity, and threats to human health. Microplastic leakage into marine ecosystems arises from plastic waste mismanagement and a lack of effective mitigative strategies. This review identified a scarcity of microplastics’ mitigation strategies from different stakeholders. Lack of community involvement in microplastic monitoring or ecosystem conservation exists due to limited existence of citizen science and stakeholder co-management initiatives. Although some management strategies exist for controlling effects of microplastics (often implemented by local and global environmental groups), a standardized management strategy to mitigate microplastics in coastal areas is urgently required. There is a need to review policy interventions aimed at plastic reduction in or near coastal ecosystems and evaluate their effectiveness. There is also a need to identify focal causes of microplastic pollution in the marine environment through further environmental research and governance approaches. These would extend to creating more effective policies as well as harmonized and extended efforts of educational campaigns and incentives for plastic waste reduction while mandating stringent penalties to help reduce microplastic leakage into the marine environment.

29 January 2025 in Discover Sustainability
Verified
Journal Article
Open access
PDF file
Amarachi Paschaline OnyenaAmarachi Paschaline Onyena
Amarachi Paschaline Onyena
Kabari SamKabari Sam
Kabari Sam
The twenty-first century presents critical challenges to global water resources, with rising consumption, scarcity, and security issues threatening human well-being and ecosystem health. Regions such as the Middle East, North Africa, China, and the USA are already experiencing significant impacts on health, livelihoods, and ecosystems due to the global water crisis. By 2050, projections indicate that two billion people across 44 countries will face severe water scarcity, with over two billion currently lacking access to safe drinking water and 3.6 billion enduring annual shortages. Climate change, urbanization, and economic development further exacerbate these challenges, intensifying pressure on water systems and threatening biodiversity. This research synthesizes global data on water scarcity, examines case studies of successful interventions, and analyses key drivers of water scarcity stress to propose actionable strategies. The Blue Revolution Strategy offers a comprehensive model for sustainable water management, emphasizing efficient use, waste reduction, and ecological integration. Leveraging its principles -such as innovative water technologies, water-efficient agriculture, and community engagement; can help developing nations achieve sustainable water management. Results demonstrate that ecosystem-based approaches, combined with advanced technologies like membrane distillation and smart water systems, significantly enhance water use efficiency across sectors. Integrated and interdisciplinary strategies, involving collaboration among governments, businesses, and stakeholders, are essential to addressing future demands and overcoming socio-economic barriers to water access. The policy recommendations emphasize the importance of collaborative governance to ensure long-term environmental and social sustainability in water resource management.

11 February 2023 in Environmental Science and Pollution Research
Verified
Journal Article
Closed access
PDF file
Kabari SamKabari Sam
Kabari Sam
Amarachi Paschaline OnyenaAmarachi Paschaline Onyena
Amarachi Paschaline Onyena
NZNenibarini Zabbey
Nenibarini Zabbey
COChuks K. Odoh
Chuks K. Odoh
GNGoodluck N. Nwipie
Goodluck N. Nwipie
DLDavid I. Little
David I. Little

8 June 2023 in Environmental Science and Pollution Research
Verified
Journal Article
Closed access
PDF file
DCDavies Ibienebo Chris
Davies Ibienebo Chris
Amarachi Paschaline OnyenaAmarachi Paschaline Onyena
Amarachi Paschaline Onyena
Kabari SamKabari Sam
Kabari Sam

24 August 2023 in Environmental Monitoring and Assessment
Verified
Journal Article
Closed access
PDF file
Amarachi Paschaline OnyenaAmarachi Paschaline Onyena
Amarachi Paschaline Onyena
JNJoseph A. Nkwoji
Joseph A. Nkwoji
LCLucian O. Chukwu
Lucian O. Chukwu
Tony R. WalkerTony R. Walker
Tony R. Walker
Kabari SamKabari Sam
Kabari Sam

29 September 2023 in Aquatic Ecology
Verified
Journal Article
Closed access
PDF file
Amarachi Paschaline OnyenaAmarachi Paschaline Onyena
Amarachi Paschaline Onyena
CJCathrine Sumathi Jebaraj
Cathrine Sumathi Jebaraj
JNJoseph A. Nkwoji
Joseph A. Nkwoji
LCLucian O. Chukwu
Lucian O. Chukwu