A key to the lichens of Terra Nova Bay (Victoria Land, Continental Antarctica)

Castello, Miris; Nimis, Pier Luigi

doi:10.1080/11250000009356374

Cited by 26 publications

(51 citation statements)

References 4 publications

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“…() reported c. 30 species from Casey and Davies stations, also at 66°S. Perhaps the richest place studied in the Ross Sea area so far is Edmonson Point in Terra Nova Bay, with 56 species (Castello & Nimis, ). Thus, the number of lichens found in our study is close to the average figure found on other lichen diversity studies in continental Antarctica.…”

Section: Discussionmentioning

confidence: 99%

Lichen myco- and photobiont diversity and their relationships at the edge of life (McMurdo Dry Valleys, Antarctica)

Pérez‐Ortega

Ortiz‐Álvarez

Green

et al. 2012

FEMS Microbiol Ecol

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Lichen-forming fungi are among the most diverse group of organisms in Antarctica. Being poikilohydric, lichens are able to cope with harsh environmental conditions that exclude other organisms like vascular plants. The McMurdo Dry Valleys (Victoria Land, Continental Antarctica) are a hyperarid cold desert where macroscopic life is reduced to a few lichens and bryophyte species. We investigated the diversity of lichen-forming fungi and their associated photobionts in three valleys (Garwood, Marshall, and Miers). Correct identification of lichen-forming fungi from extreme ecosystems is complicated by the presence of numerous sterile and extremely modified thalli. To overcome this problem, we used a combined approach for the identification of the species present in the area, the first involving identification by means of standard characters and the second, two DNA-based (ITS region) species delimitation methods (General Mixed Yule-Coalescent model and genetic distances). In addition, we also used ITS sequences for the identification of the photobionts associated with the mycobionts. We studied the relationships between both bionts and assessed the degree of selectivity and specificity found in those associations. We also looked for landscape level spatial patterns in these associations. The two DNA-based methods performed quite differently, but 27 species of lichen-forming fungi and five putative species of photobionts were found in the studied area. Although there was a general trend for low selectivity in the relationships, high specificity was found in some associations and differential selectivity was observed in some lichen-forming fungi. No spatial structure was detected in the distribution of photobionts in the studied area.

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Section: Discussionmentioning

confidence: 99%

Lichen myco- and photobiont diversity and their relationships at the edge of life (McMurdo Dry Valleys, Antarctica)

Pérez‐Ortega

Ortiz‐Álvarez

Green

et al. 2012

FEMS Microbiol Ecol

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“…Lichens were identified using the key by Castello [33]. All data concerning the sampling sites and the identifications are reported in Table 1.…”

Section: Methodsmentioning

confidence: 99%

Antarctic Epilithic Lichens as Niches for Black Meristematic Fungi

Selbmann

Grube

Onofri

et al. 2013

Biology

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Sixteen epilithic lichen samples (13 species), collected from seven locations in Northern and Southern Victoria Land in Antarctica, were investigated for the presence of black fungi. Thirteen fungal strains isolated were studied by both morphological and molecular methods. Nuclear ribosomal 18S gene sequences were used together with the most similar published and unpublished sequences of fungi from other sources, to reconstruct an ML tree. Most of the studied fungi could be grouped together with described or still unnamed rock-inhabiting species in lichen dominated Antarctic cryptoendolithic communities. At the edge of life, epilithic lichens withdraw inside the airspaces of rocks to find conditions still compatible with life; this study provides evidence, for the first time, that the same microbes associated to epilithic thalli also have the same fate and chose endolithic life. These results support the concept of lichens being complex symbiotic systems, which offer attractive and sheltered habitats for other microbes.

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“…Short taxo− nomic notes are provided for selected species and distribution of newly reported taxa is discussed in two categories: world distribution in case of the species new to the Antarctic and Antarctic distribution in case of the species new to the VL area. Information on distribution of other species in VL is available in Castello (2003a) and in the continuously updated on−line database VICTORIA (Castello 2003b;Castello et al 2006).…”

Section: Methodsmentioning

confidence: 99%

“…The re− corded flora comprises 57 lichens, 11 mosses, one liverwort and various species of algae and cyanobacteria (Castello 2003a, b;Cannone 2004;Adams et al 2006). Al− though it seems very poor in species, VL supports some of the most diverse vegeta− tion on the continental Antarctic and several types of plant communities are found in this region (Longton 1973;Castello and Nimis 1995;Cannone and Seppelt 2008).…”

Section: Study Areamentioning

confidence: 99%

“…Nota− ble collections and published accounts have been made by Italian researchers who investigated lichens from several localities along the VL coast from Cape Hallett in the north (72°76'S) to Marble Point in the south (77°11'S). These data were published in several articles (Castello andNimis 1995, 2000;Castello 2003a;Cannone 2004Cannone , 2006Cannone and Seppelt 2008;Cannone and Guglielmin 2010) and organized in an on−line database, VICTORIA, that provides taxonomic, distri− butional and ecological data of the VL lichens (Castello 2003b;Castello et al 2006). However, the area of VL has not been fully investigated as most of the pub− lished sites are located in its central territories with only scant attention to its north− ernmost (Kappen 1985) or southernmost (Longton 1973;Seppelt et al 1995Seppelt et al , 2010 localities.…”

Section: Introductionmentioning

confidence: 99%

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Additions to the lichen flora of Victoria Land, Antarctica

Smykla¹,

Krzewicka²,

Wilk³

et al. 2011

Polish Polar Research

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Lichens of relict penguin colonies and sites affected by active penguin colonies were investigated in Victoria Land, Ross Sea sector, continental Antarctica. A total of 17 coastal sites, seven in northern and ten in southern Victoria Land, have been investigated across 7°of latitude from 71°to 78°S. Altogether 40 taxa of lichens have been identified. Four of the recorded species are new to the Antarctic -Caloplaca erecta, C. soropelta, C. tominii and Physcia tenella; two species are new to the Victoria Land area -Lecania nylanderiana and Lecanora polytropa. The first lichen records from Beaufort Island are also provided. Data presented here expand the knowledge on the occurrence, diversity and distribution of Victoria Land lichens.

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A key to the lichens of Terra Nova Bay (Victoria Land, Continental Antarctica)

Cited by 26 publications

References 4 publications

Lichen myco- and photobiont diversity and their relationships at the edge of life (McMurdo Dry Valleys, Antarctica)

Lichen myco- and photobiont diversity and their relationships at the edge of life (McMurdo Dry Valleys, Antarctica)

Antarctic Epilithic Lichens as Niches for Black Meristematic Fungi

Additions to the lichen flora of Victoria Land, Antarctica

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