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The state of the Natural Regeneration in Bavarian Forest National Park, 10 Years after the Total Death Parent Stands
Červenka, J.; Wild, Jan; Svoboda, M.; Kopecký, Martin; Macek, Martin; Brůna, Josef; Zenáhlíková, J.
2011 - anglický
The presented research is focused on the state of natural regeneration (Norway spruce and Rowan), 10 years after total death of parent stands in the core untouched part Bavarian Forest National Park. The 16 permanent plots 40m x 40m are located on the southeast of Bavaria. We determined exact height, size of the last height increment, condition and species of trees. Number of saplings were counted and classified by heights. These number ranged from 53 to 17276 saplings per hectare. The spruce species composition was 96.7%. The height structure of spruce shows that almost 73% found spruce trees reached heights greater than 0.5 m. The average height increment increased with increasing height of saplings. This paper presents state of natural regeneration in mountain spruce forests in Bavarian Forest National Park without the human influence in summer 2010, 10 years after total death of parent stands.
Klíčová slova:
norway spruce; rowan; natural regeneration
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
The state of the Natural Regeneration in Bavarian Forest National Park, 10 Years after the Total Death Parent Stands
The presented research is focused on the state of natural regeneration (Norway spruce and Rowan), 10 years after total death of parent stands in the core untouched part Bavarian Forest National Park. ...
Application of the Electrospun Nanofibers in Wastewater Treatment
Lev, J.; Holba, Marek; Kalhotka, L.; Szostková, M.; Kimmer, D.
2011 - anglický
Electrospun nanofiber filters were used for treated wastewater treatment plant outlets. The efficiency fot the pathogen removal was monitored towards Czech government directions about water reuse.
Klíčová slova:
nanofibers; wastewater; treatment
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Application of the Electrospun Nanofibers in Wastewater Treatment
Electrospun nanofiber filters were used for treated wastewater treatment plant outlets. The efficiency fot the pathogen removal was monitored towards Czech government directions about water reuse.
The Regeneration Stand and HeighIncrement 10 Years after a Dieback Caused by Bark Beetle Outbreak
Zenáhlíková, J.; Svoboda, M.; Wild, Jan; Kopecký, Martin; Macek, Martin
2011 - anglický
In 1990s the bark beetle outbreak caused a dieback of mountain spruce forest in Sumava National Park. We analyzed structure of mature stands and natural regeneration more than 10 years after a dieback in 1998. After that forests have been left without human interventions. Nine square plots (400 m(2)) were measured by technology FiledMap. It was examined: trees, snags, stumps and regeneration. Tree layer is completely destroyed, there are only standing stumps, snags and lying logs. There are any mature trees. The dominant species was spruce (Picea abies), only one living rowan (Sorbus aucuparia) was on P60. There were only 25 livings trees higher than 3 m on all plots together. In regeneration density was dominant spruce - 97 %, rowan was represented with 4 %. The number of regeneration differed between plots and covers variation in density which ranched between 1260 12000 ind/ha. Height of regeneration has normal distribution with mean 46 cm, which agrees with age of 10 years. This indicates majority of regeneration established before or in time of stand decomposition. Striking was minimal rate of young individuals, which means lower generative restoration in phase after dieback of tree layer. Height increment increases with increasing height of regeneration. Stand openings lead to expansion of herbal vegetation.
Klíčová slova:
advanced regeneration; mountain spruce forest; Šumava National Park
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
The Regeneration Stand and HeighIncrement 10 Years after a Dieback Caused by Bark Beetle Outbreak
In 1990s the bark beetle outbreak caused a dieback of mountain spruce forest in Sumava National Park. We analyzed structure of mature stands and natural regeneration more than 10 years after a dieback ...
When mammoths were migrating through Moravia: Palaeovegetation of Weichselian
Jankovská, Vlasta
2010 - anglický
Reconstruction of palaeovegetation and landscape character for Last Glacial Period (Weichselian) on the basis of pollenanalytical research (Czech Republic, E Moravia).
Klíčová slova:
Weichselian; palaeovegetation; Moravia
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
When mammoths were migrating through Moravia: Palaeovegetation of Weichselian
Reconstruction of palaeovegetation and landscape character for Last Glacial Period (Weichselian) on the basis of pollenanalytical research (Czech Republic, E Moravia).
Biogenic calcite structures in Green Lake, James Ross Island, Antarctica
Elster, Josef; Nedbalová, Linda; Komárek, Jiří; Vodrážka, R.
2009 - anglický
Microbial carbonates (calcification) have been reported in Antarctic lakes in James Ross Island with unusual periphyton communities (cyanobacteria and green algae). This is the first record of cyanobacterial thrombolite community in Antarctica. Mikrobiální kalcifikované krusty byly zjištěna v antarktických jezerech na ostrově James Ross s neobvyklým složením mikrobiálních společenstev (především sinic a řas). Je to první záznam cyanobakteriálních thrombolitů v Antarktidě.
Klíčová slova:
Green Lake; James Ross; Biogenic calcite structures
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Biogenic calcite structures in Green Lake, James Ross Island, Antarctica
Microbial carbonates (calcification) have been reported in Antarctic lakes in James Ross Island with unusual periphyton communities (cyanobacteria and green algae). This is the first record of ...
Evaluation of nutrient limitation and heavy metal inhibition in Antarctic streams by a miniaturized algal bioassay
Kvíderová, Jana; Elster, Josef
2009 - anglický
The algal growth potential and algal primary production rate of Antarctic streams (King George Island, South Shetlands) were measured in miniaturized algal bioassay to evaluate possible nutrient limitation and heavy metal inhibition. The bioassay proved nitrogen limitation in oligotrophic stream samples observed in the field. The heavy metal inhibition was not found. The algal growth potential and algal primary production rate of Antarctic streams (King George Island, South Shetlands) were measured in miniaturized algal bioassay to evaluate possible nutrient limitation and heavy metal inhibition. The bioassay proved nitrogen limitation in oligotrophic stream samples observed in the field. The heavy metal inhibition was not found.
Klíčová slova:
miniaturizel algal bioassay
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Evaluation of nutrient limitation and heavy metal inhibition in Antarctic streams by a miniaturized algal bioassay
The algal growth potential and algal primary production rate of Antarctic streams (King George Island, South Shetlands) were measured in miniaturized algal bioassay to evaluate possible nutrient ...
Sustainable approaches to small-area grassland and barren management with respect to flora and insect diversity
Vymyslický, T.; Fabšičová, Martina; Musil, Z.
2009 - anglický
This study is devoted to the determination of sustainable ways of increasing flora and insect diversity in meadows through the establishment of barren sites and fallows, which help many ephemeral plant species to reproduce from the soil seed bank. We tested the optimal time for the duration of a fallow and it seems to be 3-5 years. Significant differences were observed in the number of species and their cover between nutrient-poor and nutrient-rich areas.No massive occurence of invasive and expansive species was found. In the warm eastern part of the Podyjí NP we found plant species that had been missing there for many years.
Klíčová slova:
fallows; grasslands; diversity
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Sustainable approaches to small-area grassland and barren management with respect to flora and insect diversity
This study is devoted to the determination of sustainable ways of increasing flora and insect diversity in meadows through the establishment of barren sites and fallows, which help many ephemeral ...
Specificity of cyanobacterial microflora in Antarctica
Komárek, Jiří; Komárek, Ondřej
2009 - anglický
The cyanobacterial microflora of Antarctica is considered to be mainly secondary. The easy transport of diaspores by wind and human activities (particularly in the last decades) was supported by different authors. The continental input of new cyanobacterial spores to Antarctica surely exists, but cannot explain the special stable diversity of Antarctic cyanobacteria. Our studies indicate the specificity and stability of Antarctic cyanobacterial communities. In Antarctica, there exists a wide spectrum of cyanobacterial morpho- and genotypes, which form special communities every year with dominating adapted species, among which numerous Antarctic endemits exist. cyanobakteriální mikroflóra Antarktidy je považována za druhotnou. Snadný transport diaspor větrem a lidskou činností (zvláště v posledních dekádách) byl podpořen pracemi různých autorů. Přísun nových kontinentálních cyanobakteriálních spór do Antarktidy existuje, ale nemůže vysvětlit zvláštní stálou rozmanitost antarktických cyanobakteriálních společenstev. V Antarktidě existuje široké spektrum morfo a genotypů, které každoročně tvoří zvláštní společenstva s dominancí adaptovaných druhů, z nichž je mnoho pro Antarktidu endemických.
Klíčová slova:
Antarctica; cyanobacteria; specificity
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Specificity of cyanobacterial microflora in Antarctica
The cyanobacterial microflora of Antarctica is considered to be mainly secondary. The easy transport of diaspores by wind and human activities (particularly in the last decades) was supported by ...
Lake ecosystems of James Ross Island: short characteristics
Nedbalová, Linda; Elster, Josef; Komárek, Jiří; Nývlt, D.
2009 - anglický
We present a short overview of lakes of James Ross Island, their origin, geomorphological and hydrological position, physical, chemical and biological characteristics. Krátký přehled jezer ostrova James Ross, jejich původ, geomorfologické a hydrologické postavení, fyzikální, chemická a biologická charakteristika.
Klíčová slova:
lakes; ecosystems; James Ross
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Lake ecosystems of James Ross Island: short characteristics
We present a short overview of lakes of James Ross Island, their origin, geomorphological and hydrological position, physical, chemical and biological characteristics....
Towards a synthesis: Neobiota book of abstracts
Pyšek, Petr; Pergl, Jan
2008 - anglický
Abstracts of papers presented at Neobiota 2008 conference. Sborník abstraktů mezinárodní konference Neobiota 2008.
Klíčová slova:
biological invasions; impact; mechanisms
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Towards a synthesis: Neobiota book of abstracts
Abstracts of papers presented at Neobiota 2008 conference.
Sborník abstraktů mezinárodní konference Neobiota 2008.
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