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AquaDocs is the joint open access repository of the UNESCO/IOC InternationaI Oceanographic Data and Information Exchange (IODE) and the International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC) with support from the FAO Aquatic Sciences and Fisheries Abstracts. It is a thematic repository covering the natural marine, coastal, estuarine /brackish and fresh water environments and includes all aspects of the science, technology, management and conservation of these environments, their organisms and resources, and the economic, sociological and legal aspects. [see About]

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AFRICA [5817]
AMERICAS [13530]
ASIA [9162]
EUROPE [4567]
  • Assessment of the physicochemical properties of the Halda River, Bangladesh

    Islam, Md.S.; Azadi, M.A.; Nasiruddin, M.; Islam, Md.T.; Akter, D.; Ahmed, T.U. (2022)
    Water quality in any water body is dependent on its physicochemical properties, the knowledge of which is necessary to maintain the suitability of the environment for aquatic organisms. In Bangladesh, the Halda River, a valuable spawning ground for the Indian major carp species is currently believed to be under threat due to anthropogenic and environmental causes. To identify the physicochemical properties of this river, eleven physical and chemical parameters were under investigation for 24 months, from January, 2017 to December, 2018, at three selected stations on the river. The average and range values of the investigated parameters were: 27.70±1.25 °C and 22.52–30.77 °C for water temperature, 24.96±6.11 cm and 15.33–35.33 cm for transparency, 114.36±14.42 µS/cm and 54.67–162.17 µS/cm for electrical conductivity (EC), 50±10 ppm and 30–70 ppm for total dissolved solids (TDS), 7.46±0.14 and 7.1–7.7 for pH, 6.17±0.88 mg/L and 4.30–10.07 mg/L for dissolved oxygen (DO), 13.14±2.41 mg/L and 7.49–43.29 mg/L for free carbon dioxide (fCO2), 7.71±1.15 mg/L and 4.41–11.62 mg/L for calcium (Ca++), 32.76±5.17 mg/L and 17.83–46.33 mg/L for total hardness (TH), 47.10±12.47 mg/L and 36.17–55 mg/L for total alkalinity (TA), and 1.38±0.38 mg/L and 0.72–2.43 mg/L for biochemical oxygen demand (BOD5). Significant positive relationships between transparency and EC (r=0.78, P<0.01), EC and TH (r=0.96, P<0.001), EC and TDS (r=0.92, P<0.001), EC and Ca++(r=0.87, P<0.001), TDS and TH (r=0.86, P<0.001), Ca++ and TH (r=0.87, P<0.001), and Ca++ and TDS (r=0.86, P<0.001) have been observed. Physicochemical properties indicated that the level of pollution of the Halda River water was low, which made it suitable for aquatic organisms and acceptable for domestic and agricultural purposes.
  • Citizen engagement and open science.

    Intergovernmental Oceanographic Commission of UNESCO and UNESCO World Heritage Centre (UNESCOParis, France, 2022)
    Environmental DNA expeditions in UNESCO World Heritage Marine Sites: engaging citizen-scientists for biodiversity conservation of UNESCO sites.
  • Transboundary Waters Assessment Programme (TWAP) Assessment of Governance Arrangements for the Ocean Volume 1. Transboundary Large Marine Ecosystems.

    Fanning, Lucia; Mahon, Robin; Baldwin, Kimberly; Douglas, Selicia (UNESCO-IOCParis, France, 2015)
    This report is an output of the Large Marine Ecosystems component of the Global Environment Facility (GEF) Transboundary Waters Assessment Programme (TWAP)(2013-2015). TWAP conducted indicator-based assessments for transboundary water systems in five categories: aquifers, rivers, lakes, Large Marine Ecosystems (LMEs) and Open Oceans. These included assessment of governance arrangements and overall architecture for transboundary systems. This report covers the arrangements for LMEs, while its companion (Volume 2) covers arrangement for Open Ocean with a focus on Areas Beyond National Jurisdiction (ABNJ). Each report is summarised as a chapter in the overall assessment report for the respective water category (Open Ocean and LME).
  • 2nd International Conference on Marine/Maritime Spatial Planning, 15-17 March 2017 Paris, France.

    Ehler, Charles; Intergovernmental Oceanographic Commission of UNESCO (UNESCO, Intergovernmental Oceanographic Commission and European Commission – DGMAREParis, France, 2017)
    Organized by the Intergovernmental Oceanographic Commission (IOC) of UNESCO and the Directorate -General for Maritime Affairs and Fisheries of the European Commission, the 2nd international Conference on Marine/Maritime Spatial Planning brought together more than 350 experts from all regions of the world. Marine/Maritime Spatial Planning is described as the process that consists in regulating human activities in the waters border- ing coastal areas in order to preserve marine ecosystems, avoid conflicts between sectors of commercial and industrial activity, and promote international cooperation. The conference provided an opportunity to take stock of ex- isting experiences in marine spatial planning (MSP), exchange of best practices, encourage cooperation among countries sharing coastal and marine waters and establish priorities for the years to come.
  • Development of the IOC Proposal for an International (UN) Decade of Ocean Science for Sustainable Development.

    UNESCO-IOCParis, France, 2017
    At its 49th session, the IOC Executive Council requested the IOC Officers and Executive Secretary to pursue the development of the concept of an International decade on ocean science for sustainable development (2021– 2030) – Towards the ocean we need for the future we want – potentially under the auspices of the United Nations. This document provides an overview of the activities undertaken since 2016 to raise the awareness of IOC, UNESCO and UN Member States, to engage UN bodies and other stakeholders in supporting the Decade proposal and highlights a way forward for further advancing the Decade establishment under the UN, for consideration by the IOC Assembly.

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