Algal structure of the littoral epilithon in lentic water bodies at Hope Bay, Antarctic Peninsula

Bonaventura, S.M.; Vinocur, Alicia; Allende, Luz; Pizarro, Haydée

doi:10.1007/s00300-005-0104-3

Cited by 10 publications

(7 citation statements)

References 41 publications

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“…Migała et al [55] also indicated considerable ecological heterogeneity in this area in terms of humidity, microhabitat temperature, soil type, and vegetation type. The studied habitats offer a wide spectrum of environmental conditions for cyanobacteria and algae, thus promoting the development of diverse phycoflora assemblages [11,24,26,30,31,33,[66][67][68][69]. The growth of microalgae and plants in Arctic regions is limited by factors such as temperature, water availability, and nutrient supply.…”

Section: Discussionmentioning

confidence: 99%

“…Although several studies have indicated the influence of physicochemical parameters of water and soil (especially the availability of nutrients) on the formation of cyanobacterial and algal assemblages [24,26,[30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47], they do not address some important issues. In the majority of the publications, the relationships between cyanobacterial and algal assemblages and environmental factors are determined for specific ecosystems or habitats, e.g., lakes, rivers, streams, soil, snow, and glacier.…”

Section: Introductionmentioning

confidence: 99%

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Cyanobacterial and green algal assemblages in various tundra habitats in the high Arctic (West Spitsbergen, Norway)

Richter¹,

Matuła²,

Pietryka³

et al. 2018

Acta Soc Bot Pol

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The diversity of cyanobacteria and algae from various microhabitats in Spitsbergen is comparatively well known. However, the relationships between environmental factors and the structure of microflora communities remain largely unclear. This study was conducted in Hornsund Bay, which exhibits large variability in the physicochemical characteristics of habitats, particularly with regard to the availability of nitrogen and phosphorus. This variability, to a large degree, is caused by seabird colonies, which fertilize nutrient-poor terrestrial ecosystems near their nesting areas. The large variations in ecological conditions and vegetation types in the study area aid assessment of habitats representing different combinations of factors potentially influencing the formation of cyanobacterial and algal assemblages. The aim of this study was to examine the influence of physicochemical parameters on the taxonomic composition and diversity of green algae and cyanobacteria (particularly the coccoid, oscillatorialean, and heterocystous taxa). The study encompassed two groups of habitats – soil surface habitats and water-saturated habitats, both characterized by diverse influences of seabird colonies, vegetation cover, and moisture. Our results showed that taxonomic diversity and composition of cyanobacteria and algae were mainly influenced by P–PO43−, N–NH4+ and Ca2+ (soil surface habitats), and NO3−, as well as moisture (index of wetness) and pH (water-saturated habitats). The variability of these physicochemical properties was largely due to the variability of the seabird colony influence. Taken together, our findings aid in understanding the processes of formation of phycoflora assemblages in Arctic tundra.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cyanobacterial and green algal assemblages in various tundra habitats in the high Arctic (West Spitsbergen, Norway)

Richter¹,

Matuła²,

Pietryka³

et al. 2018

Acta Soc Bot Pol

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“…The taxonomy follows the system of Round et al (1990). Specialized works were used for identification, including Bonaventura et al (2006), Esposito et al (2008), Kawecka et al (1998), Kochman-Kędziora et al (2018), Kopalová (2012), Kopalová et al (2011Kopalová et al ( , 2015, Lobo et al (1998), Luo et al (2016), Mataloni et al (2005), Pizarro and Vinocur (2000) Procopiak and Fernandes (2003), Van de Vijver et al (2008,2009,2011,2013,2015,2018)…”

Section: Methodsmentioning

confidence: 99%

“…The vast majority of studies are related to the description of new taxa and are focused on King George Island (Van de Vijver and Beyens 1996;Kawecka et al 1998;Lobo et al 1998;Procopiak and Fernandes 2003;Vinocur and Maidana 2010;Luo et al 2016;Kochman-Kędziora et al 2018), Peninsula Antarctica (Vinocur and Izaguirre 1994;Van de Vijver and Beyens 1996;Pizarro and Vinocur 2000;Mataloni et al 2005;Bonaventura et al 2006), Prince Edward Islands , Deception Island (Van de Vijver and Mataloni 2008; Kopalová et al 2015), Livingston Island (Van de Vijver et al 2009Zidarova 2010;Zidarova et al 2012; Van de Vijver and Kopalová 2014; Kopalová et al 2015), and James Ross Island (Esposito et al 2008;Kopalová et al 2011;Kopalová 2012;Kopalová et al , 2015Van de Vijver and Kopalová 2014;Hamsher et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Geographic distribution of epilithic diatoms (Bacillariophyceae) in Antarctic lakes, South Shetland Islands, Maritime Antarctica Region

Silva¹,

Oliveira²,

Alves³

et al. 2019

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Organisms adapt to the environment by establishing themselves in suitable locations. Adaptation to the harsh Antarctic environment is no different. In this work the communities of epilithic diatoms in ice-free areas of water systems of five Antarctic islands are studied. The samples were oxidized, and permanent sheets were later prepared for analysis of the material. They were examined using an optical microscope and mounted on stubs for identification of the taxon in an electron microscope. Fifty-nine species distributed in 28 genera were collected. Only four species were observed in all study areas. Deception Island had unique species in comparison with those on other islands. Knowing the diatom community is a first step in understanding the systems that they inhabit. The polar environment is challenging due to the difficulty of sampling and low diversity and abundance.

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“…Chloroplast parietal, not dissected, occupying most of the cell. Previously reported in Antarctica: South Orkney Islands, Signy Island (Broady 1979); South Shetland Islands, Deception Island (Fermani et al 2007), Livingston Island (Zidarova 2008); Antarctic Peninsula, Cierva Point (González Garraza et al 2011), Hope Bay (Bonaventura et al 2006); Balleny Islands (Kol and Flint 1968); Haswell Island (Kol 1968); Wilkes Land, Windmill Islands (Ling 1996); Victoria Land (Cavacini 2001). Collecting sites: Untersee − 17, U26.…”

Section: Stichococcus Bacillarismentioning

confidence: 95%

Lichens, bryophytes and terrestrial algae of the Lake Untersee Oasis (Wohlthat Massiv, Dronning Maud Land, Antarctica)

Andreev¹,

Andersen²,

Kurbatova³

et al. 2020

Czech Polar Rep.

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Lake Untersee is the largest ice-covered freshwater lake in the interior of East Antarctica. The mountain oasis is situated around it in the Gruber Mts. of the Wohlthat Massif. For approximately 7,000 years the area has been free of ice and the local climate relatively stable. It is very severe, cold, and windy and dominated by intense evaporation and sublimation but with little melt. Relative humidity averages only 37%. Vegetation is sparse in the oasis and previously only poorly investigated. Two lichen species and no bryophytes were known from the area. In November-December 2018, a survey of terrestrial flora and vegetation was made. The list of lichens was completed for the area, bryophytes were found for the first time, and some terrestrial algae were collected. In total, 23 lichen species, 1 lichenicolous fungus, 1 moss, and 18 terrestrial algae were discovered for the locality. The abundance of each species within their habitats was also evaluated. The lichen flora of the Untersee Oasis is typical for continental oases and similar to other previously investigated internal territories of Dronning Maud Land, except for the very rich lichen flora of the Schirmacher Oasis.

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Algal structure of the littoral epilithon in lentic water bodies at Hope Bay, Antarctic Peninsula

Cited by 10 publications

References 41 publications

Cyanobacterial and green algal assemblages in various tundra habitats in the high Arctic (West Spitsbergen, Norway)

Cyanobacterial and green algal assemblages in various tundra habitats in the high Arctic (West Spitsbergen, Norway)

Geographic distribution of epilithic diatoms (Bacillariophyceae) in Antarctic lakes, South Shetland Islands, Maritime Antarctica Region

Lichens, bryophytes and terrestrial algae of the Lake Untersee Oasis (Wohlthat Massiv, Dronning Maud Land, Antarctica)

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Algal structure of the littoral epilithon in lentic water bodies at Hope Bay, Antarctic Peninsula

Cited by 10 publications

References 41 publications

Cyanobacterial and green algal assemblages in various tundra habitats in the high Arctic (West Spitsbergen, Norway)

Cyanobacterial and green algal assemblages in various tundra habitats in the high Arctic (West Spitsbergen, Norway)

Geographic distribution of epilithic diatoms (Bacillariophyceae) in&nbsp;Antarctic lakes, South Shetland Islands, Maritime Antarctica Region

Lichens, bryophytes and terrestrial algae of the Lake Untersee Oasis (Wohlthat Massiv, Dronning Maud Land, Antarctica)

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Geographic distribution of epilithic diatoms (Bacillariophyceae) in Antarctic lakes, South Shetland Islands, Maritime Antarctica Region