scholarly journals Synthetic and Semi-Synthetic Microplastic Ingestion by Mesopelagic Fishes From Tristan da Cunha and St Helena, South Atlantic

2021 ◽  
Vol 8 ◽  
Author(s):  
Alexandra R. McGoran ◽  
James S. Maclaine ◽  
Paul F. Clark ◽  
David Morritt

Mesopelagic fishes were sampled around Tristan da Cunha and St Helena in the South Atlantic from the RRS Discovery at depths down to 1000 m. Sampling was part of the Blue Belt Programme, a marine survey of British Overseas Territories funded by the United Kingdom Government. Thirteen species of mesopelagic fishes identified from 30 specimens were compared with two species (two specimens) collected from rock pools or surface water near the shore. The digestive tracts of all fishes were examined for microplastics. Additionally, one specimen of Opostomias micripnus (Günther, 1878) was analyzed after recovery from the stomach of a commercially fished species, Hyperoglyphe antarctica (Carmichael, 1819). One specimen of Anoplogaster cornuta was found to have ingested a bearded sea devil (Linophryne sp.), a cock-eyed squid (Histioteuthis sp.), a bolitaenid octopus, Japetella diaphana, remains of unidentifiable fish, crustaceans, and possibly salps. These prey items were also examined for microfibres. Both Histioteuthis sp. and Linophryne sp. had ingested fibers and these were considered “ingested particles” for A. cornuta. Neither shallow water dwelling species had ingested microplastics, whilst 11 of the 13 studied mesopelagic species were found to be contaminated. Overall, 66.7% of mesopelagic fishes were found to contain microfibres. Anthropogenic fibers were common especially viscose, a semi-synthetic material which is associated with sanitary products as well as other items.

Polar Record ◽  
2013 ◽  
Vol 50 (2) ◽  
pp. 119-127 ◽  
Author(s):  
Klaus Dodds ◽  
Alan D. Hemmings

ABSTRACTThis article assesses the current state of UK-Argentine relations with reference to the South Atlantic and Antarctic region. Three major themes are pursued: the current state of UK-Argentine relations, with the contested Falklands/Malvinas looming large in the assessment, alongside fisheries management around South Georgia; the mapping of Argentine Antarctic territory in the context of extended continental shelf delimitation; and finally, the recent UK White Paper on Overseas Territories is noted insofar as it marks the most recent public assessment of how the coalition government is attempting to manage the most southerly portions of the British Overseas Territories portfolio. The article concludes with a warning that there is a danger that worsening UK-Argentine relations might begin to have more profound implications for the Antarctic Treaty System as resource, sovereignty and territorial issues acquire more piquancy.


Author(s):  
Игорь Ирхин ◽  
Igor Irkhin

This article gives general characteristic of the constitutional status of the overseas territories of the UK, show the directions of cooperation between the UK and the overseas territories. The author has made some conclusions on the flexibility and quality differentiation of constitutional and legal approaches of the organization of the political-territorial structure of the UK. The political and territorial relations between the UK and relevant overseas territory were proposed to classify as unitary with the elements of federalism. The author has confirmed the actuality of the question of the constitutional concretization of the competences of the Governor of St. Helena, Ascension Island, Tristan da Cunha. In order to provide a more complete account of interests of population of the overseas territories was raised the problem of the lack of constitutional provisions on the appointment of the Administrators on Ascension Island and Tristan da Cunha with the opinion formed by elected Councils. The position on the advisability of the constitutional consolidation of the form and order of consideration of the interests of the Islands of Saint Helena, Ascension Island and Tristan da Cunha in the government of the Kingdom, as well as when considering the UK Parliament of legislative acts on issues relating to the whole Commonwealth was argued.


Author(s):  
Christine Hänel ◽  
John Irish

Zwei weltweit verbreitete Lepismatidae-Arten, die auf der Süd-Atlantischen Insel von Tristan da Cunha gesammelt wurden, sind identifiziert. Damit wird bestätigt das Vertreter der Ordnung Thysanura (Borstenschwänze) dorthin eingeschleppt worden sind. In der Fauna des Archipels Tristan da Cunhas und anderer, weiter südlich liegenden Inseln, sind einheimische Thysanura-Arten nicht bekannt. Im Gegensatz hierzu existieren einige Arten auf den Inseln St. Helena und Ascension. Deren geographische Lage sowie deren politische und soziale Verbindungen zu Tristan da Cunha stehen mit der Ausbreitung im Zusammenhang. Borstenschwänze werden hauptsächlich durch den Handel verbreitet. Im Falle von Tristan da Cunha verstärkt der zunehmende Tourismus die Einschleppung. Um weitere Probleme durch Import fremder Arten zu verhindern, wird der Aufbau eines Quarantänesystems vorgeschlagen, dass für den ankommenden Schiffsverkehr zuständig sein sollte.StichwörterThysanura, Lepismatidae, Lepisma, Ctenolepisma, Fishmoth, Silverfish, Tristan da Cunha, Gough Island, South Atlantic, introduction.


Author(s):  
Martin Robson

This article utilises International Relations role theory to analyse a number of potential roles for the United Kingdom as an actor with vested interests in the South Atlantic. It assesses the contemporary context of the UK’s trading relationship with the South Atlantic in light of the ongoing dialogue between the EU and the UK with regard to BREXIT. It also recognises the strategic realities of the South Atlantic and the UK’s Overseas Territories in the region. It posits that the UK, as a strategic actor in the South Atlantic, is limited in its role choices and that the role of ‘Opportunistic Partner’ in terms of its relationship with Argentina, offers the most scope as the basis for future mutually beneficial trading relations to normalise further political relations between the two countries.


2021 ◽  
Vol 8 ◽  
Author(s):  
Stephanie M. Martin ◽  
Marta Soeffker ◽  
Andy Schofield ◽  
Rhys Hobbs ◽  
Trevor Glass ◽  
...  

Marine mammal sightings were recorded during research cruises to three remote, mid-ocean British Overseas Territories in the South Atlantic and Southern Ocean. In March to April 2018 and 2019, the Exclusive Economic Zones (EEZs) of tropical St Helena and temperate Tristan da Cunha were surveyed. The sub-polar waters of South Georgia and the South Sandwich Islands (SGSSI) were surveyed in February to March 2019. At St Helena in 2018, five species were recorded during 11 sightings, and in 2019, four species, with one additional unidentified species, during seven sightings. Most of these sightings were of dolphin species, which are known to be resident around the Island and seamounts. In Tristan da Cunha in 2018, a total of five identified and one unidentified species were recorded during six sightings, half of which were associated with the Islands or seamounts. In 2019, due to rough weather, no sightings were recorded in the Tristan da Cunha waters. Around SGSSI, 162 sightings of 236 cetaceans were made in 2019, mostly of baleen whales, with seven species identified with certainty. Sightings around the southern South Sandwich Islands included beaked whales and large dolphins, whereas baleen whales dominated in the northern South Sandwich Islands. These results provide new data for rarely surveyed regions, helping to build a spatial picture of important areas for marine mammals, which will help inform marine spatial protection strategies.


2008 ◽  
Vol 35 (1) ◽  
pp. 15-70 ◽  
Author(s):  
A. M. LUCAS

Shortly before he died, John Lindley decided to dispose of his herbarium and botanical library. He sold his orchid herbarium to the United Kingdom government for deposit at the Royal Botanic Gardens, Kew, and then offered his library and the remainder of his herbarium to Ferdinand Mueller in Melbourne. On his behalf, Joseph Hooker had earlier unsuccessfully offered the library and remnant herbarium to the University of Sydney, using the good offices of Sir Charles Nicholson. Although neither the University of Sydney nor Mueller was able to raise the necessary funds to purchase either collection, the correspondence allows a reconstruction of a catalogue of Lindley's library, and poses some questions about Joseph Hooker's motives in attempting to dispose of Lindley's material outside the United Kingdom. The final disposal of the herbarium to Cambridge and previous analyses of the purchase of his Library for the Royal Horticultural Society are discussed. A list of the works from Lindley's library offered for sale to Australia is appended.


Polar Biology ◽  
2020 ◽  
Author(s):  
Alexander L. Bond ◽  
Christopher Taylor ◽  
David Kinchin-Smith ◽  
Derren Fox ◽  
Emma Witcutt ◽  
...  

AbstractAlbatrosses and other seabirds are generally highly philopatric, returning to natal colonies when they achieve breeding age. This is not universal, however, and cases of extraordinary vagrancy are rare. The Tristan Albatross (Diomedea dabbenena) breeds on Gough Island in the South Atlantic Ocean, with a small population on Inaccessible Island, Tristan da Cunha, ca 380 km away. In 2015, we observed an adult male albatross in Gonydale, Gough Island, which had been ringed on Ile de la Possession, Crozet Islands in 2009 when it was assumed to be an immature Wandering Albatross (D. exulans). We sequenced 1109 bp of the cytochrome b mitochondrial gene from this bird, and confirmed it to be a Tristan Albatross, meaning its presence on Crozet 6 years previous, and nearly 5000 km away, was a case of prospecting behaviour in a heterospecific colony. Given the challenges in identifying immature Diomedea albatrosses, such dispersal events may be more common than thought previously.


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