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Book (series)Organic and inorganic contaminants in marine sediments off northern Mozambique
Results from the R/V Dr Fridtjof Nansen environmental survey
2020Also available in:
No results found.The report presents the results of the measurements of grain size, total organic carbon (TOC), hydrocarbons and metals in surface sediments (>100 samples) collected from 40 locations off the coast of northern Mozambique during an environmental survey in March–April 2018. The survey was carried out from the R/V Dr Fridtjof Nansen in the following areas: (i) Pemba – planned gas industry logistic base, (ii) Ibo Island (Quirimbas National Protected Area) to St. Lazarus Bank – the reference area, and (iii) Palma - gas exploration area. The contents of fine-grained fraction (<63 μm) of the sediment varied strongly in all areas from coarse sediment to high mud contents, whereas TOC levels were generally low and correlated poorly with fine-grained fraction. Background levels of hydrocarbons and metals were found in most of the samples. Anthropogenic contamination was found at one site in Pemba harbour. No oil-related contamination was demonstrated, including the Palma area where gas exploration is concentrated. Elevated concentrations of barium and total hydrocarbon content at some locations in the Palma area are attributed to drilling activities but are not considered to be of environmental concern. Based on the measured concentrations of chemicals, background concentrations for the studied areas are proposed. -
Book (series)Review of measures taken by intergovernmental organizations to address sea turtle and seabird interactions in marine capture fisheries. 2007
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No results found.This document reviews actions taken by intergovernmental organizations (IGOs), including regional fisheries management organizations (RFMOs) and other relevant regional fishery bodies (RFBs), to address problematic sea turtle and seabird interactions in marine capture fisheries. Sea turtles and seabirds are subject to a number of natural and anthropogenic mortality sources, including fishing operations. As a result, all sea turtle species of known status are recognized as being endangered. All s ea turtle species excluding the flatback are listed in Appendix I of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), which regulates international trade. Of the 61 species of seabirds affected by longline fisheries, 26 are threatened with extinction, including 19 species of albatrosses. The Convention on Migratory Species, which has a broader remit than CITES in terms of its requirements for both domestic and multilateral conservation measures, lists all sea turtles, albatrosses, giant petrels and Procellaria petrels in its Appendices. Due to concern over the status of sea turtles and certain species of seabirds and the possible negative effects of fishing on these populations, several IGOs have taken measures to address these problems. Some of these organizations have begun examining seabird or sea turtle interactions, several have adopted voluntary measures to address problematic interactions, while five RFMOs have legally binding measures requiring the employment of seabird avoidance methods in pelagic and demersal longline and trawl fisheries. There currently are no legally-binding measures in place by an IGO to manage turtle-fishery interactions or seabird interactions in coastal gillnet fisheries. Several IGOs, which lack fisheries management authority, serve as advisory mechanisms and conduct cooperative research, or have a primary responsibility of regional sea turtle or seabird conservation. -
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