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Hvaš gerist į tśndrunni viš hlżnun jaršar?

Tśndran er margslungin, fįtęk af tegundum en aušug af lķfmassa, stöšug en einnig viškvęm og hśn er eitt mikilvęgasta vistkerfiš sem veršur fyrir įhrifum hnattręnna loftslagsbreytinga.

Föstudagnn 13. aprķl kl. 12.30 ķ Öskju N-131, mun Ingibjörg Svala Jónsdóttir, prófessor viš Lķf- og umhverfisvķsindadeild, kynna rannsóknir sķnar ķ fyrirlestrarröš Lķffręšistofu:

Erindi hennar veršur flutt į ensku, og nefnist Phenological responses to climate warming across the tundra biome

a_141.jpgĮgrip erindis birtist einnig į vefsķšu lķffręšistofu HĶ.

During more than two decades valuable data has been collected within the research network International Tundra Experiment (ITEX) aiming at answering the question how climate warming affects tundra plant communities and ecosystems. The large number of research sites widely distributed across the tundra biome, the use of standardized protocols and the combination of experimental warming and monitoring make this network unique. Several data syntheses have provided groundbreaking insights into how climate warming affects growth and reproduction of individual tundra plants and tundra plant communities. In this talk I will focus on more recent synthesis of phenological data. As expected, they show that warming accelerates phenology in general. Furthermore, the syntheses reveal that plants at colder sites (high Arctic) are more sensitive to a given increase in summer temperatures than plants at warmer sites (low Arctic and Alpine), that warming shortens the flowering season for Arctic and alpine plants and more so for late flowering species than early flowering. I will discuss the implications of these differential phenological responses to warming for plant reproductive success, plant establishment and trophic interactions in tundra ecosystems.

Dagskrį föstudagsfyrirlestra Lķffręšistofu


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Athugasemdir

1 Smįmynd: Valdimar Samśelsson

Kęri Arnar. Žaš sem skešur į Tśndrum noršlęgšra slóša er aš 7 mįnuši įrsins er engin uppgufun vegna kulda og sķfrera. Žessa örfįu mįnuši mestalagi 3 žį gęti einhvaš borist ķ andrśmsloftiš af Methane. Žetta er allt of sumt. Ef viš eigum aš vara reikna śt hvaš mannskapur og dżr prumpa mikiš žį held ég aš vķsindamenn séu farnir aš ganga of langt en held samt aš mišaš viš gróšur į žessum svęšum skapi ekki eins mikiš methand en į sušlęgari slóšum enda Tśndrugróšur. 

Valdimar Samśelsson, 13.4.2018 kl. 11:19

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