Seasonal dynamics of chironomids in the profundal zone of a mountain lake (L’adové pleso, the Tatra Mountains, Slovakia)

Biologia ◽  
2006 ◽  
Vol 61 (18) ◽  
Author(s):  
Jolana Tátosová ◽  
Evžen Stuchlík

AbstractThe profundal community of L’adové pleso (an oligotrophic high mountain seepage lake at an altitude of 2,057 m with a max. depth of 18 m and an ice-cover period from October–July) was studied from December 2000–October 2001. Chironomidae, the most significant part of the studied community, are represented by four taxa and dominated by Micropsectra radialis Goetghebuer, 1939 and Pseudodiamesa nivosa (Goethgebuer, 1928). These two species showed a 1-year life cycle. The total densities of chironomids varied from 0 to 5,927 ind. m−2; no chironomids, or very low densities, were found during the winter/spring period, probably due to low oxygen concentrations in the medial part of the lake. These low oxygen concentrations probably caused the relocation of larvae from the medial part of the sedimentary area at the same time.

2017 ◽  
Vol 65 (2) ◽  
pp. 146-153 ◽  
Author(s):  
Mariusz Ptak ◽  
Dariusz Wrzesiński ◽  
Adam Choiński

AbstractThe paper discusses changes in the hydrological regime of high mountain Lake Morskie Oko located in the Tatra Mountains, in the Tatra Mountains National Park, a UNESCO biosphere reserve (MaB). According to the research conducted in the years 1971–2015, its water stages decreased by 3.5 cm·dec−1, mean annual water temperature increased by 0.3°C·dec−1and the duration of ice phenomena and ice cover was reduced by 10 day·dec−1. No considerable changes in maximum values of ice cover thickness were recorded. Such tendencies are primarily caused by long-term changes in climatic conditions – air temperature and atmospheric precipitation. The hydrological regime of the lake was also determined by changes in land use in the lake’s catchment and its location in high mountains.


2015 ◽  
Vol 61 (230) ◽  
pp. 1207-1212 ◽  
Author(s):  
Iwona Kurzyca ◽  
Adam Choiński ◽  
Joanna Pociask-Karteczka ◽  
Agnieszka Lawniczak ◽  
Marcin Frankowski

AbstractWe discuss the results of an investigation of the chemical composition of the ice cover on the high-mountain lake Morskie Oko in the Tatra Mountains, Carpathians, Poland. In the years 2007–13, the ice cover was characterized by an average duration of 6 months, a thickness range of 0.40–1.14 m, and a multilayered structure with water or slush inclusion. In water from the melted ice cover, chloride (max. 69%) and sulphate (max. 51%) anions and ammonium (max. 66%) and calcium (max. 78%) cations predominated. Different concentrations of ions (F−, Cl−, NO3−, SO42−, Na+, K+, Mg2+, Ca2+, NH4+) in the upper, middle and bottom layers of ice were observed, along with long-term variability and spatial diversification within the ice layer over the lake. Snowpack lying on the ice and the water body under the ice were also investigated, and the influence on the ice cover of certain ions in elevated concentrations was observed (e.g. Cl− in the upper ice cover and the snowpack, and Ca2+ in the bottom ice cover and water body).


2021 ◽  
Vol 56 ◽  
pp. 29-43
Author(s):  
Peter KUCERA ◽  
◽  
Peter BARANCOK ◽  

Knowledge of the overall syntaxonomic and habitat variability of forest communities with Arolla pine (Pinus cembra) within the Tatra Mountains (Western Carpathians) is still insufficient as field research was hindered by their hardly accessible localities and deforestation for high mountain grazing. Arolla pine woodlands were traditionally classified within the association Pino cembrae-Piceetum Myczkowski et Lesinski 1974, but recent surveys recognize more numerous units. Hitherto unpublished releves from the north-eastern part of the Tatra Mountains document the occurrence of several floristically and ecologically distinct Arolla pine communities: (1) acid woodland of Homogyno alpinae-Pinetum cembrae on nutrient-poor habitats over quartzitic bedrock, and (2) calcareous woodlands of species-poor Pyrolo rotundifoliae-Pinetum cembrae of sites with a well-developed, tangled humus soil horizon, Cystopterido montanae-Pinetum cembrae on habitats influenced by both limestones and quartzites, Primulo elatioris-Pinetum cembrae bound to sites with the most favourable humidity, and Seslerio tatrae-Pinetum cembrae with the most pronounced calcareous character.


2018 ◽  
Vol 69 (2) ◽  
pp. 88-100
Author(s):  
Anna Miechówka ◽  
Marek Drewnik

Abstract The article presents the overview of the rendzinas found in the Polish Tatra mountains based on literature data and unpublished authors results and observations. Particular attention was paid to soil properties related to the high mountain environment in Poland occurring only in the the Tatra Mountains. The influence of soil forming factors on the genesis of rendzinas and their spatial distribution was described. Furthermore the soils properties were analysed in order of distinguished soil units. Finally the proposal for classification of Tatra rendzinas was given.


2010 ◽  
Vol 14 (1) ◽  
pp. 59-70 ◽  
Author(s):  
Elwira Żmudzka

Abstract The purpose of the report is to determine trends in thermal conditions in the Polish part of the Tatra Mountains. The results of studies were compared with the results of analogous analyses, carried out for the area of lowland Poland. The study makes use of the data from the weather stations in Zakopane and on Kasprowy Wierch Mt. from the years 1951-2006, mainly from 1966-2006. The thermal conditions in lowland Poland was determined on the basis of the area-averaged time series (45 stations). Various thermal characteristics were considered. The increase of the rate of upward trend in temperature at the turn of the 21st century, as well as the change of the seasonal distribution of the warming in comparison with the preceding long-term periods, have been documented. Symptoms of increase of the thermal continentality have also been observed.


Biologia ◽  
2006 ◽  
Vol 61 (18) ◽  
Author(s):  
Peter Appleby ◽  
Gayane Piliposian

AbstractSediment cores from nine different lakes in the Tatra Mountains, collected as part of the EU funded AL:PE, MOLAR and EMERGE projects investigating natural environmental records stored in remote mountain lake sediment sequences, were dated radiometrically by 210Pb and 137Cs. At five sites, Długi Staw Gąsienicowy and Zielony Staw Gąsienicowy on the Polish side of the Tatra Mountains and Starolesnianske pleso, Nižné Terianske pleso, and L’adové pleso on the Slovak side of the Tatra Mountains, the cores were sectioned at close intervals and analysed in detail to produce a high resolution chronology. For the remaining four sites, Zmarzly Staw Gąsienicowy (Poland), and Vel’ké Hincovo pleso, Vyšné Temnosmrečinské pleso, Vyšné Wahlenbergovo pleso (Slovakia), it was sufficient to establish a low resolution sketch chronology and only a few samples were analysed from each core. At L’adové pleso, multiple cores were collected in order to establish spatial distribution of sediments over the bed of the lake. Cores from all sites had good records of the fallout radionuclides from which it was possible to construct reliable chronologies of the recent sediments.


2019 ◽  
Vol 11 (1) ◽  
pp. 1084-1097 ◽  
Author(s):  
Krzysztof Senderak ◽  
Marta Kondracka ◽  
Bogdan Gądek

Abstract Talus slopes are a common sedimentary formation both in polar and high-mountain areas, but their development is still not sufficiently understood. This article discusses the environmental factors that have been influencing development of talus slopes since the deglaciation and their impact on the internal structure of slopes. Case studies of the slopes from SW Spitsbergen and the Tatra Mountains in Poland were compared in order to explore different evolution stages. Slopes’ structure was analysed using geophysical surveys based on two-dimensional electrical resistivity tomography (ERT) with a Wenner-Schlumberger array and an electrode spacing of 5 m, combined with geomorphological observations. The investigated talus slopes represent the paraglacial, periglacial and talus-alluvial environments. New data on the internal structure of talus slopes developing in the present or past glaciated areas adds to understanding talus slope evolution. There are many different views concerning the development of slopes during the paraglacial period, whose analysis seems to be crucial in the background of climate change and their record in slope structures. In addition, the study provided valuable information on the development and degradation of permafrost in slope materials.


2012 ◽  
Vol 43 (4) ◽  
pp. 500-506 ◽  
Author(s):  
Joanna Pociask-Karteczka ◽  
Adam Choiński

The study examined the formation, break-up, and duration of ice phenomena and ice cover on Lake Morskie Oko (1,395.4 metres above sea level (masl)), which is a representative of high mountain lakes in the Tatra Mountains located in the western Carpathian Mountains with a maximum elevation of 2,655 masl in the period 1971–2010. The maximum thickness was analyzed additionally. The lake covers an area of nearly 32 hectares and its greatest depth is 51.8 m. Its water is very clear with transparency reaching 12.5 m in depth. The trend towards a delayed freeze-up reaches 4.1 days per decade (d decade−1) (p < 0.01) and the ablation of ice on Lake Morskie Oko tends to take place earlier at a rate of 4.5 d decade−1 (p < 0.05). The time period with ice cover on the lake has been getting shorter at a rate of 10 d decade−1 during the time frame of interest. Results of ice cover research on Lake Morskie Oko are consistent with recent studies which have shown that ice duration on lakes throughout the Northern Hemisphere has decreased over the last few decades and they serve as new evidence which confirms a warming of the climate in this section of Europe.


Biologia ◽  
2006 ◽  
Vol 61 (18) ◽  
Author(s):  
Elena Štefková

AbstractIn the framework of the international project EMERGE, species composition of epilithic diatoms of 34 selected high mountain lakes of Slovak part of the Tatra Mountains were investigated. In all, 127 taxa of diatoms belonging to 26 genera were recorded. Comparison of the epilithic assemblages of the investigated lakes showed differences both in relative abundance and taxa present in the individual lakes. On the basis of species composition and relative abundance of epilithic diatoms using hierarchical cluster analysis, two main groups of lakes were created. The first group includes 4 lakes which can be classified as strongly acidified and 9 lakes which are acidified or threatened by acidification. In this group, acidophilous species such as Achnanthes helvetica, A. marginulata, Aulacoseira distans and Tabellaria flocculosa prevailed. The second group includes 19 non-acidified lakes. The most common diatoms in these lakes were Achnanthes minutissima, A. helvetica, Cymbella minuta and Denticula tenuis which occur practically in all these lakes but with different abundances. The division of lakes due to their diatom species composition mostly confirmed the status of these lakes as judged from their water chemistry.


Author(s):  
Pol Tarrats ◽  
Miguel Cañedo-Argüelles ◽  
Maria Rieradevall ◽  
Narcís Prat

<p>The benthos of the high mountain Enol Lake (Picos de Europa National Park, Spain) was analyzed in order to understand the spatiotemporal factors and patterns controlling its current Chironomidae community. In total, more than 14,000 chironomid larvae were identified, belonging to 27 taxa. The results have pointed out the presence of 3 main chironomid assemblages in the lake: i) littoral community, which is mainly controlled by temperature and oxygen seasonal changes, ii) <em>Chara</em>-dominant community, which is mainly controlled by the presence and abundance of Characeae in the lake, and iii) profundal community, which is affected by low oxygen levels caused by sediment and organic matter discharge to the lake due to human pressures in the lake basin. We provide valuable insights for the managers to understand the current ecological status of Enol Lake and to evaluate which measures should be implemented to preserve or improve it. Moreover, our results constitute an essential step forward to improve the interpretation of the past changes of the lake by means of the subfossil chironomid community. </p>


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