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  • 1
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    Cooling in down-slope peat ecosystems due to accelerated glacial melting in Higher Himalaya, India. The 19th Himalaya-Karakorum-Tibet Workshop (2004)
    In:  Himalayan Journal of Sciences, Special Issue, vol. 2, pp. 224
    Details
    Publication Date: 2004
    Keywords: CC 1/1 ; Coordinating Committee ; Himalayas
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    BIBLIOGRAPHY ILP
  • 2
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    Climate warming alters thermal stability but not stratification phenology in a small north-temperate lake (2013)
    Wiley
    Details
    Publication Date: 2013-11-28
    Description: Recent climate change represents one of the most serious anthropogenic threats to lake ecosystems in Canada. As meteorological and hydrological conditions are altered by climate change, so too are physical, chemical and biological properties of lakes. The ability to quantify the impact of climate change on the physical properties of lakes represents an integral step in estimating future chemical and biological change. To that end, we have used the Dynamic Reservoir Simulation Model (DYRESM), a one-dimensional vertical heat transfer and mixing model, to hindcast and compare lake temperature-depth profiles against 30 years of long-term monitoring data in Harp Lake, Ontario. These temperature profiles were used to calculate annual (June to September) thermal stability values from 1979 to 2009. Comparisons between measured and modelled lake water temperature and thermal stability over three decades showed strong correlation (r 2  〉 0.9). However, despite significant increases in modelled thermal stability over the 30 year record, we found no significant change in the timing of the onset, breakdown or the duration of thermal stratification. Our data suggest that increased air temperature and decreased wind are the primary drivers of enhanced stability in Harp Lake since 1979. The high predictive ability of the Harp Lake DYRESM model suggests that its use as a tool in future lake management projects is appropriate. This article is protected by copyright. All rights reserved.
    Print ISSN: 0885-6087
    Electronic ISSN: 1099-1085
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Published by Wiley
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  • 3
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    Impacts of climatic change and fishing on Pacific salmon abundance over the past 300 years (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-10-29
    Description: The effects of climate variability on Pacific salmon abundance are uncertain because historical records are short and are complicated by commercial harvesting and habitat alteration. We use lake sediment records of delta15N and biological indicators to reconstruct sockeye salmon abundance in the Bristol Bay and Kodiak Island regions of Alaska over the past 300 years. Marked shifts in populations occurred over decades during this period, and some pronounced changes appear to be related to climatic change. Variations in salmon returns due to climate or harvesting can have strong impacts on sockeye nursery lake productivity in systems where adult salmon carcasses are important nutrient sources.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Finney, B P -- Gregory-Eaves, I -- Sweetman, J -- Douglas, M S -- Smol, J P -- New York, N.Y. -- Science. 2000 Oct 27;290(5492):795-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Marine Science, University of Alaska Fairbanks, Fairbanks, AK 99775, USA. finney@ims.uaf.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11052941" target="_blank"〉PubMed〈/a〉
    Keywords: Alaska ; Animals ; *Climate ; Diatoms ; *Ecosystem ; Fisheries ; Fresh Water ; Geologic Sediments/chemistry ; Industry ; Nitrogen Isotopes/analysis ; Pacific Ocean ; Plankton ; Salmon/*physiology ; Temperature
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    Allerod--younger dryas lake temperatures from midge fossils in atlantic Canada (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-08-30
    Description: Remains of freshwater midges are abundant in lake sediments, and their species distributions are closely related to the surface-water temperature of lakes; their distributions thus provide a powerful tool for paleoclimatology. The distribution of species in a core from Splan Pond in Atlantic Canada indicates that there were abrupt transitions in late-glacial temperatures between warm and cold states. The transitions are correlative with the well-known warm Allerod and cold Younger Dryas events in Europe. These data thus confirm the inference from palynological data that these events affected regions on both sides of the Atlantic.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Walker, I R -- Mott, R J -- Smol, J P -- New York, N.Y. -- Science. 1991 Aug 30;253(5023):1010-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17775344" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    The widespread threat of calcium decline in fresh waters (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-11-29
    Description: Calcium concentrations are now commonly declining in softwater boreal lakes. Although the mechanisms leading to these declines are generally well known, the consequences for the aquatic biota have not yet been reported. By examining crustacean zooplankton remains preserved in lake sediment cores, we document near extirpations of calcium-rich Daphnia species, which are keystone herbivores in pelagic food webs, concurrent with declining lake-water calcium. A large proportion (62%, 47 to 81% by region) of the Canadian Shield lakes we examined has a calcium concentration approaching or below the threshold at which laboratory Daphnia populations suffer reduced survival and fecundity. The ecological impacts of environmental calcium loss are likely to be both widespread and pronounced.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jeziorski, Adam -- Yan, Norman D -- Paterson, Andrew M -- Desellas, Anna M -- Turner, Michael A -- Jeffries, Dean S -- Keller, Bill -- Weeber, Russ C -- McNicol, Don K -- Palmer, Michelle E -- McIver, Kyle -- Arseneau, Kristina -- Ginn, Brian K -- Cumming, Brian F -- Smol, John P -- New York, N.Y. -- Science. 2008 Nov 28;322(5906):1374-7. doi: 10.1126/science.1164949.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Paleoecological Environmental Assessment and Research Lab, Department of Biology, Queen's University, Kingston, ON, Canada, K7L 3N6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19039134" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium/*analysis ; Daphnia/*physiology ; *Ecosystem ; Food Chain ; Fresh Water/*chemistry ; Geologic Sediments ; Hydrogen-Ion Concentration ; Ontario ; Population Dynamics ; Reproduction ; Zooplankton/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 6
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    Arctic seabirds transport marine-derived contaminants (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-07-16
    Description: Long-range atmospheric transport of pollutants is generally assumed to be the main vector for arctic contamination, because local pollution sources are rare. We show that arctic seabirds, which occupy high trophic levels in marine food webs, are the dominant vectors for the transport of marine-derived contaminants to coastal ponds. The sediments of ponds most affected by seabirds had 60 times higher DDT, 25 times higher mercury, and 10 times higher hexachlorobenzene concentrations than nearby control sites. Bird guano greatly stimulates biological productivity in these extreme environments but also serves as a major source of industrial and agricultural pollutants in these remote ecosystems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Blais, Jules M -- Kimpe, Lynda E -- McMahon, Dominique -- Keatley, Bronwyn E -- Mallory, Mark L -- Douglas, Marianne S V -- Smol, John P -- New York, N.Y. -- Science. 2005 Jul 15;309(5733):445.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Advanced Research in Environmental Genomics, Department of Biology, University of Ottawa, Ottawa, Ontario, K1N 6N5 Canada. jblais@science.uottawa.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16020729" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arctic Regions ; *Birds/physiology ; DDT/analysis ; *Ecosystem ; Environmental Pollutants/*analysis ; Feeding Behavior ; Fresh Water/*chemistry ; Geologic Sediments/*chemistry ; Hexachlorobenzene/analysis ; Hydrocarbons, Chlorinated/analysis ; Mercury/analysis ; Nitrogen Isotopes/analysis ; Population Dynamics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 7
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    Q&A: Regime change. Interview by Hannah Hoag (2012)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2012-03-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smol, John P -- England -- Nature. 2012 Feb 29;483(7387):S16. doi: 10.1038/483S16a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22378121" target="_blank"〉PubMed〈/a〉
    Keywords: Acid Rain/adverse effects ; Agriculture ; Animals ; Arctic Regions ; Canada ; *Climate Change/statistics & numerical data ; Ecosystem ; Environmental Policy/trends ; Geologic Sediments/analysis/chemistry ; Human Activities ; Hydrobiology ; Industrial Waste/adverse effects ; Lakes/analysis/chemistry ; Renewable Energy/ethics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 8
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    Climate Change: A planet in flux (2012)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2012-03-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smol, John P -- England -- Nature. 2012 Feb 29;483(7387):S12-5. doi: 10.1038/483S12a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Queen's University, Kingston, Ontario, Canada. smolj@queensu.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22378120" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Migration ; Animals ; Anthozoa/physiology ; Arctic Regions ; Atmosphere/chemistry ; Beetles/physiology ; Canada ; Carbon Dioxide/analysis ; *Climate Change/statistics & numerical data ; Communicable Diseases/epidemiology ; Diatoms/isolation & purification ; *Ecosystem ; Female ; Fossils ; Geologic Sediments/chemistry ; Hot Temperature ; Humans ; Ice Cover ; Lakes/analysis/chemistry/microbiology ; Male
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 9
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    Marked post-18th century environmental change in high-arctic ecosystems (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-10-21
    Description: Paleolimnological data from three high-arctic ponds on Cape Herschel, Ellesmere Island, Canada, show that diatom assemblages were relatively stable over the last few millennia but then experienced unparalleled changes beginning in the 19th century. The environmental factors causing these assemblage shifts may be related to recent climatic warming. Regardless of the cause, the biota of these isolated and seemingly pristine ponds have changed dramatically in the recent past and any hopes of cataloging natural assemblages may already be fruitless.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Douglas, M S -- Smol, J P -- Blake, W Jr -- New York, N.Y. -- Science. 1994 Oct 21;266(5184):416-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17816685" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 10
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    Paleolimnology: lake sediments and environmental history (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-07-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smol, J P -- New York, N.Y. -- Science. 1985 Jul 19;229(4710):262.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17759144" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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