ddab9f77-7828-4612-9d8a-281b046a14b9 eng Ev-K2-CNR +39 035 3230511 +39 035 3230551 Via San Bernardino 145 Bergamo BG 24126 Italy metadata@evk2cnr.org http://www.evk2cnr.org/ 2012-02-07T10:20:22 ISO 19115:2003/19139 1.0 Chemical and biological response of two small lakes in the Khumbu Valley, Himalayas (Nepal) to short-term variability and climatic change as detected by long-term monitoring and paleolimnological methods 2010-04-28T00:00:00 Volume: 648, Issue: 1, Publisher: Springer Netherlands, Pages: 189-205 Volume: 648, Issue: 1, Publisher: Springer Netherlands, Pages: 189-205 00188158 The most remote regions of the globe are home of the least disturbed ecosystems, yet they are threatened by air pollution and by climatic change. The Himalayas are one of the most isolated and least explored wilderness areas in the world outside the Polar Regions and it is for this reason that the Tibetan Plateau is often referred to as the Third Pole. Since 1990, an annual limnological survey (including chemistry and biology) has been carried out at two lakes located in the Kumbhu Valley, Nepal, at 5200 and 5400m a.s.l., respectively. Lake water chemistry surveys reveal a persistent increase in the ionic content of the lake water, a trend which appears to be closely linked to increasing temperature. In this study, we also analysed lake sediment cores for historical changes in algal abundance and community composition to evaluate how long-term variations in primary producer communities corresponded to known regional variations in climate systems during the past 3500years. Paleolimnological results support the evidence that the strong variability observed in the chemical data drives the variability in lake production and in the composition of algal assemblages. These variabilities can be related to known features of local climate and the values recorded in the recent years compare well with those recorded during warm periods, such as around 2000 BP, and thus support the idea that this area of the Himalayan Range, influenced by the South Asia monsoon, is closely linked to Northern Hemisphere climate dynamics. Franco Salerno The Water Research Institute (IRSA)-CNR +39 03921694221 +39 0392004692 Via del Mulino, 19 Brugherio MB 20047 Italy salerno@irsa.cnr.it http://www.irsa.cnr.it Gianni Tartari The Water Research Institute (IRSA)-CNR +39 03921694203 +39 0392004692 Via del Mulino, 19 Brugherio MB 20047 Italy tartari@irsa.cnr.it http://www.irsa.cnr.it Andrea Lami The Institute of Ecosystem Study(ISE)-CNR Largo Tonolli, 50 VERBANIA VB 28922 Italy a.lami@ise.cnr.it http://www.ise.cnr.it https://geoportal.mountaingenius.org/geonetwork/srv/eng/resources.get?uuid=ddab9f77-7828-4612-9d8a-281b046a14b9&fname=mountain_witness__s.png thumbnail png SHARE Himalayas Lakes Limnology Climatic change Paleolimnology eng inlandWaters 80.0522 88.1946 26.3684 30.4247 http://www.mendeley.com/research/chemical-and-biological-response-of-two-small-lakes-in-the-khumbu-valley-himalayas-nepal-to-shortterm-variability-and-climatic-change-as-detected-by-longterm-monitoring-and-paleolimnological-methods/# WWW:LINK-1.0-http--link Abstract:"Chemical and biological response of two small lakes in the Khumbu Valley, Himalayas (Nepal) to short-term variability and climatic change as detected by long-term monitoring and paleolimnological methods." “Chemical and biological response of two small lakes in the Khumbu Valley, Himalayas (Nepal) to short-term variability and climatic change as detected by long-term monitoring and paleolimnological methods” by Andrea Lami, Aldo Marchetto, Simona Musazzi, Franco Salerno, Gianni Tartari, Piero Guilizzoni, Michela Rogora, Gabriele A Tartari Hydrobiologia (2010) Volume: 648, Issue: 1, Publisher: Springer Netherlands, Pages: 189-205 ISSN: 00188158 DOI: 10.1007/s10750-010-0262-3 Available from www.springerlink.com