ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Monograph available for loan
    Monograph available for loan
    Alaska's changing Arctic : ecological consequences for tundra, streams, and lakes (2014)
    Oxford [u.a.] : Oxford Univ. Press
    Details Availability
    Call number: AWI G3-14-0020
    Description / Table of Contents: The latest volume in the LTER series, this book presents the results and finding of the Long-Term Ecological Research site in the Alaskan Arctic, discussing Arctic ecology from a variety of perspectives and disciplines.
    Type of Medium: Monograph available for loan
    Pages: XIV, 331 S. : Ill., graph. Darst., Kt.
    ISBN: 9780199860401
    Series Statement: Long-Term Ecological Research Network Series
    Note: Contents: 1 Introduction / John E. Hobbie. - 2 Climate and Hydrometeorology of the Toolik Lake Region and the Kuparuk River Basin: Past, Present, and Future / Jessica E. Cherry, Stephen J. Déry, Yiwei Cheng, Marc Stieglitz, Amy S. Jacobs, and Feifei Pan. - 3 Glacial History and Long-Term Ecology in the Toolik Lake Region / Donald A. Walker, Thomas D. Hamilton, Hilmar A. Maier, Corinne A. Munger, and Martha K. Raynolds. - 4 Late-Quaternary Environmental and Ecological History of the Arctic Foothills, Northern Alaska / W. Wyatt Oswald, Linda B. Brubaker, Feng Sheng Hu, and George W. Kling. - 5 Terrestrial Ecosystems at Toolik Lake, Alaska / Gaius R. Shaver, James A. Laundre, M. Syndonia Bret-Harte, F. Stuart Chapin, III, Joel A. Mercado-Dfaz, Anne E. Giblin, Laura Gough, William A. Gould, Sarah E. Hobbie, George W. Kling, Michelle C. Mack, John C. Moore, Knute J. Nadelhoffer, Edward B. Rastetter, and Joshua P. Schimel. - 6 Land-Water Interactions / George W. Kling, Heather E. Adams, Neil D. Bettez, William B. Bowden, Byron C. Crump, Anne E. Giblin, Kristin E. Judd, Katy Keller, George W. Kipphut, Edward R. Rastetter, Gaius R. Shaver, and Marc Stieglitz. - 7 Ecology of Streams of the Toolik Region / William B. Bowden, Bruce J. Peterson, Linda A. Deegan, Alex D. Huryn, Jonathan P. Benstead, Heidi Golden, Michael Kendrick, Stephanie M. Parker, Elissa Schuett, Joseph J. Vallino, and John E. Hobbie. - 8 The Response of Lakes Near the Arctic LTER to Environmental Change / Chris Luecke, Anne E. Giblin, Neil D. Bettez, Greta A. Burkart, Byron C. Crump, Mary Anne Evans, Gretchen Gettel, Sally Maclntyre, W. John O'Brien, Parke A. Rublee, and George W. Kling. - 9 Mercury in the Alaskan Arctic / William F. Fitzgerald, Chad R. Hammerschmidt, Daniel R. Engstrom, Prentiss H. Balcom, Carl H. Lamborg, and Chun-Mao Tseng. - 10 Ecological Consequences of Present and Future Changes in Arctic Alaska / John E. Hobbie, and George W. Kling.
    Branch Library: AWI Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    BOOK
    Link to Library Catalog
    get availability status
  • 2
    Electronic Resource
    Electronic Resource
    Effect of litter nitrogen on decomposition and microbial biomass inSpartina alterniflora (1983)
    Springer
    Microbial ecology 9 (1983), S. 27-40 
    Details
    ISSN: 1432-184X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The effect on decomposition of 4 different levels of nitrogen in aerial tissue ofSpartina alterniflora, collected at the end of its growing season litter, was studied in laboratory percolators for 56 days at 20
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02011578
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Impact of global change on the biogeochemistry and ecology of an Arctic freshwater system (1999)
    Oxford, UK : Blackwell Publishing Ltd
    Polar research 18 (1999), S. 0 
    Details
    ISSN: 1751-8369
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Geosciences
    Notes: Lakes and streams in the foothills near Tookik Lake, Alaska, at 68°N have been studied since 1975 to predict physical, chemical and biological impacts of future global change. Experimental manipulations include whole lake and continuous stream fertilization as well as removal and addition of predators (copepods, lake trout, grayling, sculpin). Based on our evidence the following scenario is likely. Warming thaws the upper layers of permafrost and streams and lakes become enriched with phosphorus. Streams respond quickly with higher production of diatoms but animal grazers keep biomass changes to a minimum. Fish productivity also increases. If phosphorus levels are too high, mosses become the dominant primary producer and sequester all of the nutrients. Growth of Arctic grayling under the present conditions only occurs in summers with higher than average stream flow. The present population would be stressed by warmer temperatures. When higher phosphorus levels reach lakes and cause slight europhication, the number of trophic levels will increase, especially within the microbial food web. Warmer lake temperatures increase stratification and, combined with eutrophication, could decrease oxygen in the hypolimnion. Oxygen levels will also decrease in winter under the ice cover. Eventually this habitat change will eliminate the lake trout, a top predator. Removal of lake trout results in a striking increase in abundance and productivity of smaller fish, including small lake trout, and the emergence of burbot as an alternate top predator. Large species of zooplankton will become virtually extinct.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-8369.1999.tb00295.x
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Long-term response and recovery to nutrient addition of a partitioned arctic lake (2005)
    Oxford, UK : Blackwell Science Ltd
    Freshwater biology 50 (2005), S. 0 
    Details
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: 1. To study the bottom-up linkages in arctic lakes, we treated one side of a partitioned lake with inorganic nitrogen and phosphorus for a 6-week period each summer for 6 years starting in the summer of 1985. We took a variety of weekly measurements to determine the impact of the nutrient loading on the lake and continued weekly measurements for 2–6 years after the cessation of nutrient loading to observe the recovery of the treated side. The loading rates (2.91 mmol N m−2 day−1 and 0.23 mmol P m−2 day−1) were five times the calculated loading rates for Toolik Lake, located nearby.2. In all 6 years of nutrient addition, phytoplankton biomass and productivity were greater in the treated sector than the reference sector. In the first 4 years of nutrient addition there was no flux of phosphorus from the mineral-rich sediments. This changed in the last 2 years of nutrient addition as phosphorus was released to the lake.3. The response of the animal community to increased plant production was mixed. One of the four macro-zooplankton species (Daphnia longiremis) increased in number by about twofold in the first 5 years. However, the copepod Cyclops scutifer showed no response during the treatment phase of the study. The benthic invertebrate response was also mixed. After a 2-year lag time the snail Lymnaea elodes increased in the treated lake sector but chironomids did not.4. Ecosystem response to fertilisation was not controlled solely by nutrient addition because phosphorus was not recycled from the sediments until the last 2 years of nutrient addition. Phytoplankton still showed the effects of nutrient addition in the recovery period and the hypolimnion of the treated sector was still anaerobic starting at 6 m in 1996.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2427.2005.01354.x
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Cinnamic acid inhibition of detritus feeding (1979)
    [s.l.] : Nature Publishing Group
    Nature 280 (1979), S. 55-57 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In salt marshes most of the annual production by plants becomes litter. The most prominent saltmarsh plants in the eastern coast of the US are grasses of the genus Spartina. Unlike some grasses5, tissues of Spartina alterniflora contain few or none of the compounds, such as condensed tannins, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/280055a0
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    The biogeochemistry of toluene in coastal seawater: radiotracer experiments in controlled ecosystems (1985)
    Springer
    Biogeochemistry 1 (1985), S. 307-328 
    Details
    ISSN: 1573-515X
    Keywords: toluene ; biogeochemistry ; volatilization ; degradation ; mesocosm experiments
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences
    Notes: Abstract The fate of toluene in coastal seawater was investigated in controlled ecosystems using14C- and3H-toluene as tracers. Under winter-like conditions, 80% of the toluene volatilized from the water column in 2 months. Microbial degradation was less important than volatilization and sorption onto particulate matter with resultant loss to the sediments was minor. During summer most of the toluene was degraded by microbes. Nearly 80% of the toluene was converted to CO2 within 1 week and the label remained in the water column as dissolved CO2. The experimental results were applied to estimate the removal rates and the residence time of toluene in adjacent Narragansett Bay, Rhode Island. In winter volatilization would dominate the loss of toluene and a residence time of 6 d would be predicted. However, rapid biodegradation in summer would result in a residence time of 〈 1 d.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02187375
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Nitrogen and phosphorus concentrations and export for the upper Kuparuk River on the North Slope of Alaska in 1980 (1992)
    Springer
    Hydrobiologia 240 (1992), S. 61-69 
    Details
    ISSN: 1573-5117
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Nitrogen and phosphorus concentrations were measured from May to August 1980 in the upper Kuparuk River, a tundra stream on the North Slope of Alaska. Mean values for nitrogen were 10.8 µg N 1−1 for ammonium, 21.4 µg N 1−1 for nitrate plus nitrite and 248 µg N 1−1 for dissolved organic nitrogen. Mean values for phosphorus were 8.1 µg P 1−1 for total dissolved phosphorus and 4.7 µg P 1−1 for fine particulate phosphorus. Nitrate concentrations were inversely correlated with flow whereas particulate phosphorus concentrations increased during high flows. Export of nitrogen and phosphorus from the watershed during 1980 was estimated to be 4.69, 3.25 and 91 kg km−2 yr−1 for NO3-N, NH4-N and DON-N, respectively, and 2.86 and 3.03 kg km−2 yr−1 for TDP-P and PP-P. Both the relative concentrations of N and P and the relative amounts exported suggest that phosphorus is in short supply but both nutrients are present in low concentrations comparable to those found previously in tundra ponds at Point Barrow, Alaska.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00013452
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Microbial control of dissolved organic carbon in lakes: research for the future (1992)
    Springer
    Hydrobiologia 229 (1992), S. 169-180 
    Details
    ISSN: 1573-5117
    Keywords: dissolved organic carbon ; methods ; stable isotopes ; bacteria
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The dissolved organic carbon (DOC) of lakes dominates any budget of organic carbon in these systems. Limnologists are still limited by techniques and particularly by the lack of measurements of rates of microbial transformation and use of this DOC. There are now four different approaches to the study of the microbial control of DOC in lakes. The first is through measurements of the total DOC. Recent advances in measurement with high temperature combustion will likely lead to higher and more consistent measurements in freshwaters than previously. It is possible that a biologically active fraction may be identified. The second approach is through measurements of microbial incorporation and respiration of 14C-labeled organic matter. The kinetics of this process are well known but advances in measurement of the size of the substrate pool are still being made. The third approach is to use bacterial growth in batch or continuous flow experiments in order to understand how much of the total DOC can be decomposed by microbes. The assay in this approach may be microbial growth (thymidine incorporation, biomass changes) or change in the DOC (total concentrations, specific compounds, or fractions of the DOC by molecular weight). These methods are promising but are not developed enough for routine use. For example, growth measurements in the laboratory are all subject to experimental artifacts caused by changes in the DOC and in the bacterial populations. Finally, the fourth approach is through the use of isotopes of the natural DOC. In the sea this approach has given the age of the bulk DOC (14C data). In freshwaters it has great potential for differentiating between bacterial use of terrestrial DOC vs. use of algal-derived DOC (13C data). Stable isotopes are also useful for experimentally labeling DOC produced by algae and following the use of this material by bacteria.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00006999
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    facet.materialart.
    Unknown
    Historical Changes in Arctic Freshwater Ecosystems (2006)
    Springer
    Details
    Publication Date: 2006-11-01
    Print ISSN: 0044-7447
    Electronic ISSN: 1654-7209
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by Springer on behalf of Royal Swedish Academy of Sciences.
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 10
    facet.materialart.
    Unknown
    Nitrogen and phosphorus concentrations and export for the upper Kuparuk River on the North Slope of Alaska in 1980 (1992)
    Springer
    Details
    Publication Date: 1992-09-01
    Print ISSN: 0018-8158
    Electronic ISSN: 1573-5117
    Topics: Biology
    Published by Springer
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...