Spatio-temporal Variations of Macrobenthic Annelid Community of the Karnafuli River Estuary, Chittagong, Bangladesh

Molla, Md. Habibur Rahman; Al-Imran, Md.; Aktaruzzaman, Md.; Mandol, Shamindranath; Sarkar, Mohammad Saydul Islam; Islam, Md. Shafiqul

doi:10.5376/ijms.2015.05.0026

Cited by 5 publications

(2 citation statements)

References 28 publications

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“…• Agricultural run-off and the disposal of municipal waste into the ocean add nutrients that produce algal blooms, which eventually sink to the bottom, creating hypoxic conditions and low pH that typically reduce benthic species diversity. Since the first Assessment, additional algal blooms have been reported by researchers in the Indian Ocean, along the coast of Bangladesh (Kibria and others, 2016;Mallick and others, 2016;Molla and others, 2015), and in the South Atlantic, along the coast of Brazil (Cruz and others, 2018) (see table ).…”

Section: Recent Findingsmentioning

confidence: 91%

The Second World Ocean Assessment

2021

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The past year has presented unprecedented challenges. The coronavirus disease (COVID-19) pandemic has disrupted lives and livelihoods and exposed our societies' fragility. Sadly, the pandemic is not the only crisis that humanity faces. Climate change and biodiversity loss continue unabated, threatening sustainable development and our viability as a species. These challenges are particularly evident when we look at the state of our planet's life support system, the ocean.In 2015, the first World Ocean Assessment warned that many areas of the ocean had been seriously degraded, the greatest threat to the ocean being the failure to deal with the many pressures caused by human activities. The message in the second World Ocean Assessment is that the situation has not improved, with the many benefits that the ocean provides at risk. The Assessment advises that, to ensure sustainability, we must work together to improve integrated ocean management, including through joint research, capacity development and the sharing of data, information and technology.The ocean plays a crucial role in the achievement of the Sustainable Development Goals and the livelihoods of billions of people. We urgently need to change how we interact with it. The forthcoming United Nations Decade of Ocean Science for Sustainable Development and the United Nations Decade on Ecosystem Restoration provide opportunities for us to understand more and to reverse the damage that has already been done. The information in the second Assessment can assist in this process, as well as inform relevant intergovernmental conferences scheduled for 2021.I urge leaders and all stakeholders to heed the warnings in the Assessment as we work to conserve and sustainably manage our planet's marine environment. Let us foster not only a green but also a blue recovery from the COVID-19 pandemic.

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Section: Recent Findingsmentioning

confidence: 91%

The Second World Ocean Assessment

2021

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“…Sharif et al (2017) recorded 25 major taxa of zooplankton from the Karnafully River of which 23 taxa during monsoon, 20 taxa during post monsoon and 20 taxa during pre-monsoon. Species richness, diversity and evenness were very low in the mouth of the Chaktai canal where majority of sewage materials of Chittagong city falls into the Karnafully estuary in comparison with the Goverment Fish landing station and Eastern side of the third Karnafully Bridge (Molla et al, 2014). Oligochaetes, the most common that constitute the largest assembles of benthic form during pre-monsoon and lowest during monsoon (Kamruzzaman, 2003) (Table 7).…”

Section: Macro Benthosmentioning

confidence: 99%

Status and Impacts of Industrial Pollution on the Karnafully River in Bangladesh: A Review

Bhuyan¹,

Islam²

2017

ijms

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Rapid growth of urbanization and industrialization in Bangladesh has been coupled with increasing environmental pollution. The coastal and estuarine ecosystems of the country are now facing increasing pollution pressures because of the elevated level of waste discharges from various sources. Major sources of pollution include domestic sewage, industrial waste, commercial waste, agricultural waste, institutional waste, street sweepings, construction debris, mining activities and sanitation residues etc. In this review, status and effect of solid waste pollution, heavy metal pollution, organochlorine pesticides pollution and oil pollution along with the Karnafully River Estuary is assessed by a comprehensive review, recorded by researchers especially on water, sediment and aquatic biota. Different study show that metal concentrations in estuarine water relatively higher due to rapid acceleration of industrial sector. Metal concentrations is higher in fish than water and sediment. Elevated level of trace metals is highly detrimental for fish and human mechanism shown by different studies. Oil pollution is responsible for environmental deterioration due to its adverse effects on estuarine biota, fish and shellfishes, phytoplankton and zooplankton. Industrialization is needed for the development of the country. But it should be eco-friendly for the effective and sustainable development and for the protection of the environment (aquatic).

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