Humidophila komarekiana sp. nov. (Bacillariophyta), a new limnoterrestrial diatom species from King George Island (Maritime Antarctica)

Phytotaxa ◽  
2016 ◽  
Vol 272 (3) ◽  
pp. 184 ◽  
Author(s):  
NATALIA KOCHMAN-KĘDZIORA ◽  
TERESA NOGA ◽  
RALITSA ZIDAROVA ◽  
KATEŘINA KOPALOVÁ ◽  
BART VAN DE VIJVER
Keyword(s):  
New Species ◽  
Marine Diatom ◽  
South Shetland Islands ◽  
Diatom Species ◽  
King George Island ◽  
Maritime Antarctica ◽  
Antarctic Region ◽  
Diatom Flora ◽  
Shetland Islands ◽  
The Antarctic

During a survey of the non-marine diatom flora of King George Island (South Shetland Islands), an unknown Humidophila taxon was recorded. Detailed light and scanning electron microscopy observations indicated that the unknown taxon could not be identified based on the currently available literature. The new species is described as Humidophila komarekiana sp. nov. and is characterized in having strictly linear valves with parallel margins and broadly rounded, never protracted apices, a filiform raphe with almost indistinct, straight proximal and distal raphe endings. The striae are composed of one, irregularly shortened areola. The mantle areolae are interrupted at the apices. The new species is compared with similar taxa in the Antarctic Region and worldwide. Notes on the ecology of the new species are added.

Ten new Bacillariophyta species from James Ross Island and the South Shetland Islands (Maritime Antarctic Region)

Phytotaxa ◽  
2016 ◽  
Vol 272 (1) ◽  
pp. 37 ◽  
Author(s):  
RALITSA ZIDAROVA ◽  
KATEŘINA KOPALOVÁ ◽  
BART VAN DE VIJVER
Keyword(s):  
New Species ◽  
South Shetland Islands ◽  
Similar Species ◽  
Maritime Antarctic ◽  
The South ◽  
Antarctic Region ◽  
Shetland Islands ◽  
James Ross Island ◽  
The Antarctic

The present paper describes 10 new diatom (Bacillariophyta) species from the Maritime Antarctic Region. Five of the newly described taxa: Caloneis australis sp. nov., Mayamaea sweetloveana sp. nov., Navicula romanedwardii sp. nov., Sellaphora antarctica sp. nov. and Sellaphora gracillima sp. nov. have been previously reported from the Antarctic Region but were force-fitted into incorrect names. Five other taxa: Chamaepinnularia elliptica sp. nov., Cosmioneis regigeorgiensis sp. nov., Mayamaea tytgatiana sp. nov., Muelleria pimpireviana sp. nov. and Pinnularia pinseeliana sp. nov. are newly discovered taxa. The morphology of all new species is studied using both light and scanning electon microscope observations and compared with similar species from the Antarctic Region and worldwide. Data about the ecology and confirmed Antarctic distribution of the new species are added.

A critical analysis of the type of Navicula skuae with the description of a new Navicula species (Naviculaceae, Bacillariophyta) from the Antarctic Region

Phytotaxa ◽  
2020 ◽  
Vol 474 (1) ◽  
pp. 15-26
Author(s):  
NATALIA KOCHMAN-KĘDZIORA ◽  
MARIA OLECH ◽  
BART VAN DE VIJVER
Keyword(s):  
New Species ◽  
Acid Soils ◽  
South Shetland Islands ◽  
Morphological Description ◽  
Extensive Literature ◽  
King George Island ◽  
Antarctic Species ◽  
Shetland Islands ◽  
Extensive Literature Search ◽  
The Antarctic

During a study of the limno-terrestrial diatoms on King George Island (South Shetland Islands), an unknown Navicula taxon was observed. Detailed morphological analysis based on both light and scanning electron microscopy observations revealed a unique set of morphological features, that were not observed in any Navicula taxon known so far. Despite an extensive literature search, it was not possible to identify this taxon and therefore it is described as a new species: Navicula massalskiana sp. nov. At present, the new species has only been observed from its type locality, acid soils influenced by penguin excrements, close to the seashore in the Admiralty Bay Region (King George Island). Navicula massalskiana shows a high similarity with two other Antarctic species: Navicula skuae and Navicula shackletonii. The taxonomic situation of these two taxa is investigated. The type material of Navicula skuae was reinvestigated and compared with the published morphological description of N. shackletonii. Based on this comparison, both taxa are clearly conspecific making N. skuae a later synonym of Navicula shackletonii.

A new genus and species of sea pen (Octocorallia : Pennatulacea : Stachyptilidae) from the Antarctic Peninsula

2002 ◽  
Vol 16 (6) ◽  
pp. 919 ◽  
Author(s):  
Pablo J. López-González ◽  
Gary C. Williams
Keyword(s):  
New Species ◽  
Antarctic Peninsula ◽  
New Genus ◽  
South Shetland Islands ◽  
New Genus And Species ◽  
Antarctic Region ◽  
Diagnostic Features ◽  
Shetland Islands ◽  
The Antarctic ◽  
Southern Oceans

Only six of the thirty-three valid genera of sea pens have previously been recorded from the Southern Oceans (Subantarctic and Antarctic regions). The discovery of a new genus, Gilibelemnon, and new species, Gilibelemnon octodentatum, of stachyptilid sea pen is here reported from the South Shetland Islands, which makes a total of eight genera known to occur in the Southern Oceans and thirty-four genera of sea pens known worldwide. Diagnostic features of the new genus are described, including the presence of a clearly delimited dorsal and ventral naked track on the rachis, the calyces with eight long terminal teeth, the siphonozooids densely and irregularly distributed and the presence of three-flanged rods in the peduncle surface. A discussion of sea pen phylogeny and biogeography in the Antarctic region is also provided.

Three new Hantzschia species (Bacillariophyta) from the Maritime Antarctic Region

Phytotaxa ◽  
2018 ◽  
Vol 371 (3) ◽  
pp. 168 ◽  
Author(s):  
MARIE BULÍNOVÁ ◽  
NATALIA KOCHMAN-KĘDZIORA ◽  
KATEŘINA KOPALOVÁ ◽  
BART VAN DE VIJVER
Keyword(s):  
Electron Microscopy ◽  
New Species ◽  
Morphological Analysis ◽  
South Shetland Islands ◽  
Maritime Antarctic ◽  
Antarctic Region ◽  
Shetland Islands ◽  
James Ross Island ◽  
Three New Species ◽  
Scanning Electron

Following an earlier revision of the genus Hantzschia (Bacillariophyta) in the Maritime Antarctic Region, several at present unidentified or poorly known taxa of this aerophilic genus have been investigated using both light and scanning electron microscopy. Based on the morphological analysis of the observations, three new species are currently described: Hantzschia australabundans sp. nov., H. zidarovae sp. nov. and H. zikmundiana sp. nov. The new species differ from comparable taxa in valve outline, structure of the internal proximal raphe endings and structure of the striae and areolae. Additional observations are presented on Hantzschia amphioxys and its forma muelleri, H. abundans and H. incognita, based on observations of Antarctic populations from the South Shetland Islands, Vega Island and James Ross Island. Brief notes on the ecology of all reported species are added.

scholarly journals New records of isopod species of the Antarctic Specially Managed Area No. 1, Admiralty Bay, South Shetland Islands

2017 ◽  
Vol 38 (3) ◽  
pp. 409-419
Author(s):  
Karol Zemko ◽  
Krzysztof Pabis ◽  
Jacek Siciński ◽  
Magdalena Błażewicz
Keyword(s):  
Southern Ocean ◽  
New Records ◽  
South Shetland Islands ◽  
Small Scale ◽  
King George Island ◽  
Admiralty Bay ◽  
Shetland Islands ◽  
The Antarctic ◽  
First Time ◽  
Marine Basins

AbstractAdmiralty Bay (King George Island) is an Antarctic Specially Managed Area and one the most thoroughly studied small-scale marine basins in the Southern Ocean. Our study provides new data on the isopod fauna in this glacially affected fjord. Twelve species of isopods were recorded in this basin for the first time. Six of them were found for the first time in the region of the South Shetland Islands. The highest number of species new for Admiralty Bay were found in the families Munnopsidae (4 species) and Munnidae (3 species).

scholarly journals Two additions to the moss flora of the South Shetland Islands in the maritime Antarctic

2018 ◽  
Vol 87 (4) ◽  
Author(s):  
Mariusz Wierzgoń ◽  
Tomasz Suchan ◽  
Michał Ronikier
Keyword(s):  
South Shetland Islands ◽  
King George Island ◽  
Maritime Antarctic ◽  
The South ◽  
Shetland Islands ◽  
Bay Area ◽  
Leading Position ◽  
Glacial Cover ◽  
The Antarctic ◽  
First Time

<em>Tortella fragilis</em> (Drumm.) Limpr. (Pottiaceae) and <em>Bryum nivale</em> Müll. Hal. (Bryaceae) are recorded for the first time from the South Shetland Islands in the northern maritime Antarctic. They were discovered in the Admiralty Bay area on King George Island, the largest island of this archipelago. The two species are briefly characterized morphologically, their habitats are described, and their distribution in the Antarctic is mapped. Discovery of these species has increased the documented moss flora of King George Island to 67 species, strengthening it in the leading position among individual areas with the richest diversity of moss flora in Antarctica. Likewise, <em>T. fragilis</em> and <em>B. nivale</em> represent remarkable additions to the moss flora of the South Shetland Islands, which currently consists of 92 species and one variety, making this archipelago by far the richest bryofloristically amongst large geographic regions of the Antarctic. Comparison of recent (2018) and old (1985) photographs revealed a significant retreat of glacial cover and suggests that the collection site was likely opened for colonization only within the last several decades. The record of <em>T. fragilis</em> is biogeographically relevant, and constitutes an intermediate site between the species’ occurrences in the Antarctic Peninsula and southern South America. The present record of <em>B. nivale</em> is the fourth discovery of the species worldwide, which may be helpful for the future designation of the distribution of this extremely rare species.

Aulacoseira glubokoyensis sp. nov. (Bacillariophyceae), a new centric diatom from the Maritime Antarctic region

Phytotaxa ◽  
2017 ◽  
Vol 328 (2) ◽  
pp. 149
Author(s):  
ANNA BEATRIZ JONES OAQUIM ◽  
GLEYCI A.O. MOSER ◽  
HEITOR EVANGELISTA ◽  
MARCUS VINÍCIUS LICÍNIO ◽  
BART VAN DE VIJVER
Keyword(s):  
Dendritic Spines ◽  
South Shetland Islands ◽  
Similar Species ◽  
Centric Diatom ◽  
King George Island ◽  
Maritime Antarctic ◽  
Antarctic Region ◽  
Fildes Peninsula ◽  
Shetland Islands ◽  
Scanning Electron

A new centric diatom, Aulacoseira glubokoyensis sp. nov., is described from the Maritime Antarctic region. The morphology of the species is illustrated using detailed light and scanning electron microscopy observations. Its main discriminating features include the presence of typical irregularly shaped dendritic spines, at least two rimoportulae, marginal striae on the discus and a very large Ringleiste. The new species is compared to similar species worldwide. Aulacoseira glubokoyensis has only been observed in a sediment core taken from Profound Lake on the Fildes Peninsula (King George Island, South Shetland Islands).

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