Weather Condition Characteristics at the H. Arctowski Station (South Shetlands, Antarctica) for 2006, in Comparison With Multi-Year Research Results

Angiel, Piotr J.; Potocki, Mariusz; Biszczuk-Jakubowska, Julita

doi:10.2478/mgrsd-2010-0008

Cited by 15 publications

(21 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The study was conducted in the King George Island near the H. Arctowski Polish Station (62°09′S, 58°28′ W), where D. antarctica and C. quitensis co‐exist and are abundant (Kozeretska et al., ). According to Angiel, Potocki, and Biszczuk‐Jakubowska () and Araźny, Kejna, and Sobota (), who analysed climatic data for 2006/2007 and 2012/2013, respectively, the mean air temperature during summer months (Jan to Mar) in this area is ca. 3°C, with maximum and minimum of 12°C and −5°C, respectively.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

The importance of facilitative interactions on the performance of Colobanthus quitensis in an Antarctic tundra

Cavieres

Vivas

Mihoc

et al. 2018

J Vegetation Science

View full text Add to dashboard Cite

Aims The sign of interactions among plants in very harsh environments is under debate. The Antarctic tundra is one of the harshest environments on Earth and only two vascular plants (Deschampsia antarctica and Colobanthus quitensis) have successfully established natural populations. D. antarctica mostly establishes facilitative interactions with other species (mosses), but there is no information about the inter‐specific interactions established by C. quitensis. We assessed whether C. quitensis grows frequently associated with D. antarctica, and if D. antarctica neighbours have a positive effect on the survival, growth and photochemical efficiency of C. quitensis individuals. Location King George Island, Antarctic Peninsula. Methods To assess the spatial association among the two Antarctic vascular plants fifty 50 m × 50 cm quadrats were sampled on each of four different substrates: moss carpet areas; dead moss carpet areas dominated by D. antarctica; a transition zone between dead moss carpets and fellfields; and fellfields characterized by very poor vegetation cover. Infrared thermal images were taken to estimate whether growth associated with D. antarctica affected the foliar temperature of C. quitensis. The importance of D. antarctica neighbours on the growth, survival and photochemical efficiency of C. quitensis was evaluated with a neighbour removal experiment. Results The number of C. quitensis individuals associated with D. antarctica was significantly higher than when growing alone in the moss carpet and the dead moss carpet, while in the transition zone there was a trend in that direction. C. quitensis individuals growing associated with D. antarctica were bigger than those growing alone in these three substrate types. In the fellfield site there were no significant differences, neither in the number nor the size of individuals when growing alone or associated with D. antarctica. Foliar temperature of C. quitensis individuals associated with D. antarctica was slightly (1.1°C) but significantly higher than in those growing alone. The growth, survival and photochemical efficiency of C. quitensis individuals with neighbours were higher than in individuals with neighbours removed. Conclusions Our results indicate that D. antarctica has a facilitative effect on the growth, survival and photochemical efficiency of C. quitensis. Thus, facilitative interactions are present and are important in one of the harshest environments on Earth, although results from the fellfield site indicate that further research is needed.

show abstract

Section: Methodsmentioning

confidence: 99%

“…(Kozeretska et al, 2010). According to Angiel, Potocki, and Biszczuk-Jakubowska (2010) and Araźny, Kejna, and Sobota (2013), who analysed climatic data for 2006/2007 and 2012/2013, respectively, the mean air temperature during summer months (Jan to Mar) in this area is ca. 3°C, with maximum and minimum of 12°C and −5°C, respectively.…”

mentioning

confidence: 99%

The importance of facilitative interactions on the performance of Colobanthus quitensis in an Antarctic tundra

Cavieres

Vivas

Mihoc

et al. 2018

J Vegetation Science

View full text Add to dashboard Cite

show abstract

“… (a) The average air temperature and regression trend from Arctowski Station 1977–1999, and Bellingshausen Station 1968–2007; (b) annual precipitation and regression trend from Arctowski Station 1977–1999 without 1984, 1990 and 1994, data from 2006 from Angiel et al . (2010), and from Bellingshausen Station 1968–2007.…”

Section: Introductionmentioning

confidence: 99%

“…Hurricane winds (over 30 m s –1 , with wind gusts up to 80 m s –1 ) were frequently observed and are a typical element of the climate of Admiralty Bay (e.g. Wierzbicki 2009; Angiel et al . 2010).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Lichenometric ages of the little ice age moraines on king george island and of the last volcanic activity on penguin island (west antarctica)

Angiel

Dąbski

2012

Geografiska Annaler: Series A, Physical Geography

View full text Add to dashboard Cite

The recently observed recession of glaciers on King George Island is associated with decades of climate warming in the Antarctic Peninsula region. However, with only 60 years of glaciological observations in the study area ages of the oldest moraines are still uncertain. The goal of the study was to estimate ages of lichen colonization on the oldest moraines of the Ecology and White Eagle Glaciers on King George Island and on the Principal Cone of Penguin Island volcano. The first lichenometric studies on these islands from the late 1970s used rates that had about four to five times slower Rhizocarpon growth rates. We re‐examined the sites and measured 996 thalli diameters to establish the surface ages. To estimate the age we used (1) long‐term Rhizocarpon lichen group growth rates established by authors using data from a previous lichenometric study on King George Island, and (2) previous data of lichen growth rates from other sub‐Antarctic islands. Our results suggest growth rates between 0.5 and 0.8 mm yr–1. According to these rates the ages of the oldest moraine ridges are of the Little Ice Age and were colonized at the beginning of the twentieth century. The mid‐twentieth century age of lichen colonization on the historically active Penguin Island volcano might support the date of the last eruption reported by whalers in the end of the nineteenth and the beginning of the twentieth century.

show abstract

Germination capacity of five polar Caryophyllaceae and Poaceae species under different temperature conditions

Kellmann−Sopyła

Giełwanowska

2015

Polar Biol

View full text Add to dashboard Cite

A compilation of the literature relating to the germination of five species of polar vascular plants, Cerastium alpinum, Colobanthus quitensis, Silene involucrata, Deschampsia antarctica and Poa annua, indicates that optimal temperature conditions for seed germination have never been identified for some of them, and the results reported for the remaining species are largely inconclusive. Our results and published findings suggest that significant differences in the germinability of the analysed five species and their species-specific germination responses to temperature and cold stratification could result from variations in their physiological dormancy levels. It is important that seed physiological development at time of collection, seed storing time and conditions are as equal as possible when comparing results from different studies. Our study revealed differences in the maximum germination percentages of those species, which ranged from very low (C. alpinum, 10 %) to very high (S. involucrata, 99 %). Silene involucrata, C. quitensis and D. antarctica have fast-germinating seeds, whereas P. annua is a long germinating species. Within the range of four tested temperatures (12, 20, 20/7 and 30/20°C), the lowest germination percentage of S. involucrata seeds was observed at fluctuating temperature of 30/20°C and C. quitensis seeds at 12°C, the highest germination percentage of C. quitensis seeds was reported at fluctuating temperature of 20/7°C and P. annua seeds at 12°C, whereas the germination percentage of D. antarctica was not affected by temperature. A two-month cold stratification period stimulated germination in C. quitensis and D. antarctica, but it did not affect the germination of C. alpinum.

show abstract

Weather Condition Characteristics at the H. Arctowski Station (South Shetlands, Antarctica) for 2006, in Comparison With Multi-Year Research Results

Cited by 15 publications

References 2 publications

The importance of facilitative interactions on the performance of Colobanthus quitensis in an Antarctic tundra

The importance of facilitative interactions on the performance of Colobanthus quitensis in an Antarctic tundra

Lichenometric ages of the little ice age moraines on king george island and of the last volcanic activity on penguin island (west antarctica)

Germination capacity of five polar Caryophyllaceae and Poaceae species under different temperature conditions

Contact Info

Product

Resources

About