Výsledky vyhľadávania

Nájdených záznamov: 2  
Vaša požiadavka: Heslá gografické = "Tibetská náhorná plošina"
  1. NázovAcricotopus indet. morphotype incurvatus: Description and genetics of a new Orthocladiinae (Diptera: Chironomidae) larval morphotype from the Tibetan Plateau
    Aut.údajeAndreas Laug ... [et al.]
    Autor Laug Andreas (40%)
    Spoluautori Hamerlík Ladislav 1974- (40%) UMBFP09 - Katedra biológie a ekológie
    Anslan Sten (5%)
    Engels Stefan (5%)
    Turner Falko (5%)
    Wang Junbo (2%)
    Antje Schwalb (3%)
    Zdroj.dok. Zootaxa. Vol. 4656, no. 3 (2019), pp. 535-544. - Auckland : Magnolia Press, 2019
    Kľúč.slová pakomáre - midges - Chironomidae   DNA (nukleová kyselina) - deoxyribonukleová kyselina - deoxyribonucleic acid   larvy pakomárov - midge larvae   genetika - genetics   biológia - biology   ekológia - ecology   ekosystémy - ecosystems  
    Heslá geogr. Tibetská náhorná plošina - (Tibet)
    Ázia
    Form.deskr.články - journal articles
    Jazyk dok.angličtina
    KrajinaNový Zéland
    AnotáciaHigh mountain ranges such as the Tibetan Plateau with an average altitude above 4500 m are topographically complex formations. Elevational gradients, physiographic diversity and climatic heterogeneity have led to highly biodiverse ecosystems in these regions. Mountain ranges can be seen as cradles of evolution and harbour, due to their unique characteristics, a high number of highly adapted species. At the same time these areas are hard to access and therefore taxonomic information is limited. Here we describe a new Acricotopus (Diptera: Chironomidae: Orthocladiinae) larval morphotype occurring in lakes and ponds of differing salinity and water depths located on the Southern and Central Tibetan Plateau. The description is based on larvae and their genetics (ribosomal 18S, 28S and mitochondrial COI sequences) collected from a shallow pond in close proximity to the large saline lake Selin Co. Larvae of Acricotopus indet. morphotype incurvatus are characterized by a mentum with a cluster of lateral teeth, partially folded inwards, a mandible with a toothed lobe in addition to four inner teeth and a sclerotized plate positioned behind the mentum. Up to now, these morphological features have only been found in early instars of other Acricotopus species. The proposed morphotype name is inspired by the peculiar form of the mentum
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    Kategória publikačnej činnosti ADC
    Číslo archívnej kópie46671
    Katal.org.BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici
    Báza dátxpca - PUBLIKAČNÁ ČINNOSŤ
    OdkazyPERIODIKÁ-Súborný záznam periodika
    nerozpoznaný

    nerozpoznaný

  2. NázovFish on the roof of the world: densities, habitats and trophic position of stone loaches (Triplophysa) in Tibetan streams
    Aut.údajeDean Jacobsen, Soren Kock Laursen, Ladislav Hamerlík, Karen Moltesen, Anders Michelsen, Kirsten Seestern Christoffersen
    Autor Jacobsen Dean (30%)
    Spoluautori Kock Laursen Søren (30%)
    Hamerlík Ladislav 1974- (30%) UMBFP09 - Katedra biológie a ekológie
    Moltesen Hansen Karen (2%)
    Michelsen Anders (6%)
    Christoffersen Kirsten Seestern (2%)
    Zdroj.dok. Marine and Freshwater Research. Vol. 68, no. 1 (2017), pp. 53-64. - Clayton : CSIRO Publishing, 2017
    Kľúč.slová vodné živočíchy - aquatic animals   potravinové reťazce - food chains (ecology)   stable isotopes   bystrinné toky   aquatic ecosystems  
    Heslá geogr. Tibetská náhorná plošina - (Tibet)
    Jazyk dok.angličtina
    KrajinaAustrália
    Systematika 574
    AnotáciaThe fast increase in temperature on the Tibetan Plateau, with anticipated future changes in aquatic ecosystems and biodiversity, highlights the urgent need for ecological data on the sparsely studied Tibetan running waters. In the present study we surveyed eight Tibetan streams to obtain data on densities, feeding selectivity and trophic position of the stone loach Triplophysa. Benthic algae, detritus, macroinvertebrates and fish were quantified and collected for stable isotope and stomach content analysis. Triplophysa density (mean 0.70 individuals m(-2), maximum 1.6 individuals m(-2)) decreased with altitude and increased with the percentage cover of fine substratum. Glacier-fed sites tended to have the lowest fish densities, whereas the highest densities were found near lakes. Mean fish length (4.1-9.6 cm) was positively related to the percentage cover of coarse substratum. Triplophysa was omnivorous, but the composition of the stomach contents varied greatly between sites and among individuals. Algal matter was ingested at most sites, but macroinvertebrates (Chironomidae, Baetidae and Simuliidae) dominated the ingestion (average 50-100%). The trophic position of Triplophysa, identified from delta N-15 (%) of the biota, varied between 2.6 and 4.2 among localities (mean 3.6) and was inversely related to the biomass of benthic algae, but unrelated to quantities of other potential food sources.
    Kategória publikačnej činnosti ADC
    Číslo archívnej kópie39054
    Kategória ohlasu HUANG, Tai-Fu - ZHANG, Pei-Ling - HUANG, Xing-Long - WU, Tao - GONG, Xiao-Yan - ZHANG, You-Xiang - PENG, Qing-Zhong - LIU, Zhi-Xiao. A new cave-dwelling blind loach, Triplophysa erythraea sp. nov. (Cypriniformes : Nemacheilidae), from Hunan province, China. In Zoological research. ISSN 2095-8137, 2019, vol. 40, no. 4, pp. 331-336.
    Katal.org.BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici
    Báza dátxpca - PUBLIKAČNÁ ČINNOSŤ
    OdkazyPERIODIKÁ-Súborný záznam periodika
    nerozpoznaný

    nerozpoznaný



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