Počet záznamů: 1  

Growth of three cattail (Typha) taxa in response to elevated CO2

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    0435708 - BÚ 2015 RIV NL eng J - Článek v odborném periodiku
    Sullivan, L. - Wildová, Radka - Goldberg, D. - Vogel, C.
    Growth of three cattail (Typha) taxa in response to elevated CO2.
    Plant Ecology. Roč. 207, č. 1 (2010), s. 121-129. ISSN 1385-0237. E-ISSN 1573-5052
    Výzkumný záměr: CEZ:AV0Z60050516
    Klíčová slova: global change * photosynthesis * wetlands * invasive species
    Kód oboru RIV: EF - Botanika
    Impakt faktor: 1.880, rok: 2010

    The establishment of non-native species and the increase in atmospheric CO2, in combination, have the ability to alter current ecosystems. Previous studies have shown that invasive species tend to respond more strongly to CO2 than natives, but these comparisons have been of different and unrelated species. To assess how response to CO2 might be related to invasiveness per se, we compared a native (Typha latifolia) with a congeneric invasive (Typha angustifolia), as well as their hybrid (T. x glauca). All three taxa are common components of wetland vegetation, often occurring in near monocultures. An open-top chamber experiment was used to examine the effects of elevated and ambient CO2 concentrations on the three taxa. All three increased rhizome biomass by 40% in elevated CO2. Although the absolute increase did not differ among taxa, the invasive T. angustifolia had a much higher proportional response in biomass and photosynthetic rate (45 and 40% respectively). The weaker response of the two larger taxa native T. latifolia (16 and 2%) and hybrid T. x glauca (-4% and -1%) was possibly driven by soil nutrient deficiency, such that they were not able to benefit from increased CO2. However, under low nutrients the smaller species T. angustifolia may become more a problematic invader in the future.
    Trvalý link: http://hdl.handle.net/11104/0239832

     
     
Počet záznamů: 1  

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