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
    Electronic Resource
    Electronic Resource
    Allelopathic potential of vegetative and flowering ragwort (Senecio jacobaea L.) plants against associated pasture species (1994)
    Springer
    Plant and soil 164 (1994), S. 61-68 
    Details
    ISSN: 1573-5036
    Keywords: allelopathy ; aqueous extract ; bioassay ; leachate ; ragwort ; soil toxicity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The allelopathic effects of vegetative and flowering plants of the annual/biennial pasture weed Senecio jacobaea L. (ragwort) against Lolium perenne L. (perennial ryegrass) and four pasture legumes were investigated using a range of bioassays. Bioassays based on shoot and root leachates demonstrated detectable, although usually slight, allelopathic effects, and these did not usually differ between the two developmental stages of S. jacobaea. However, aqueous extract and tissue decomposition bioassays demonstrated stronger allelopathic effects, particularly for flowering plants, and this was in general agreement with toxicity assessments of soil collected from under S. jacobaea plants in the field. According to our study, flowering plants have the potential to weaken pasture through allelopathy, and decomposition of above-ground litter appears as the most likely mechanism facilitating this. The aqueous extract and tissue decomposition bioassays also revealed that L. perenne was less susceptible to S. jacobaea allelopathy than were the legumes, suggesting that encouraging a strong L. perenne component in pastures has potential for reducing the overall inhibitory ef S. jacobaea on pasture production.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00010111
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Comparison of osmotic and allelopathic effects of grass leaf extracts on grass seed germination and radicle elongation (1992)
    Springer
    Plant and soil 140 (1992), S. 315-319 
    Details
    ISSN: 1573-5036
    Keywords: allelopathy ; bioassay ; germination ; osmotic potential ; plant extract ; radicle elongation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The influence of osmotic effects of aqueous plant extracts on the results of allelopathy bioassays was investigated for four pasture grass species. It was found that allelopathic effects were substantially overestimated when osmotic effects were not taken into account. It is concluded that bioassays using aqueous plant extracts are more realistic when osmotically adjusted control values (with the same osmotic potential as the plant extract being tested) are used.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00010609
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Use of a comparative approach to identify allelopathic potential and relationship between allelopathy bioassays and “competition” experiments for ten grassland and plant species (1996)
    Springer
    Journal of chemical ecology 22 (1996), S. 933-948 
    Details
    ISSN: 1573-1561
    Keywords: Allelopathy ; bioassay ; Carduus nutans L. ; comparative approach ; correlative evidence ; forage plant ; grassland ; phytometer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Various allelopathy bioassays were used to evaluate the allelopathic potential of 10 grassland forage species against a common test (phytometer) species,Carduus nutans L. Aqueous extracts did not influenceC. nutans germination, although radicle elongation was often severely inhibited.C. nutans was strongly affected by shoot, but not root, leachates. Decomposing ground tissue had mixed effects, and often stimulated shoot production ofC. nutans. Calculation ofR 2 (coefficient of determination) values between these results, and the results of previous experiments investigating the effects of the same 10 species onC. nutans emergence and development in field plots and glasshouse competition experiments frequently revealed strong, statistically significant relationships. Our results therefore provide correlative evidence for the importance of allelopathy in field conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02029946
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    facet.materialart.
    Unknown
    No consistent effect of plant diversity on productivity (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-09-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Huston, M A -- Aarssen, L W -- Austin, M P -- Cade, B S -- Fridley, J D -- Garnier, E -- Grime, J P -- Hodgson, J -- Lauenroth, W K -- Thompson, K -- Vandermeer, J H -- Wardle, D A -- New York, N.Y. -- Science. 2000 Aug 25;289(5483):1255.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10979839" target="_blank"〉PubMed〈/a〉
    Keywords: Biomass ; *Ecosystem ; Europe ; Fabaceae/growth & development ; *Plant Development ; Plants, Medicinal
    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)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 5
    facet.materialart.
    Unknown
    Fire-derived charcoal causes loss of forest humus (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-05-03
    Description: Fire is a global driver of carbon storage and converts a substantial proportion of plant biomass to black carbon (for example, charcoal), which remains in the soil for thousands of years. Black carbon is therefore often proposed as an important long-term sink of soil carbon. We ran a 10-year experiment in each of three boreal forest stands to show that fire-derived charcoal promotes loss of forest humus and that this is associated with enhancement of microbial activity by charcoal. This result shows that charcoal-induced losses of belowground carbon in forests can partially offset the benefits of charcoal as a long-term carbon sink.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wardle, David A -- Nilsson, Marie-Charlotte -- Zackrisson, Olle -- New York, N.Y. -- Science. 2008 May 2;320(5876):629. doi: 10.1126/science.1154960.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, SE901-83 Umea, Sweden. david.wardle@svek.slu.se〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18451294" target="_blank"〉PubMed〈/a〉
    Keywords: Biomass ; Charcoal/chemistry ; Ecosystem ; *Fires ; *Soil ; Soil Microbiology ; Soot/chemistry ; Sweden ; *Trees
    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)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 6
    facet.materialart.
    Unknown
    Long-term effects of wildfire on ecosystem properties across an island area gradient (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-05-10
    Description: Boreal forest soils play an important role in the global carbon cycle by functioning as a large terrestrial carbon sink or source, and the alteration of fire regime through global change phenomena may influence this role. We studied a system of forested lake islands in the boreal zone of Sweden for which fire frequency increases with increasing island size. Large islands supported higher plant productivity and litter decomposition rates than did smaller ones, and, with increasing time since fire, litter decomposition rates were suppressed sooner than was ecosystem productivity. This contributes to greater carbon storage with increasing time since fire; for every century without a major fire, an additional 0.5 kilograms per square meter of carbon becomes stored in the humus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wardle, David A -- Hornberg, Greger -- Zackrisson, Olle -- Kalela-Brundin, Maarit -- Coomes, David A -- New York, N.Y. -- Science. 2003 May 9;300(5621):972-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Forest Vegetation Ecology, Faculty of Forestry, Swedish University of Agricultural Sciences, SE901 83 Umea, Sweden. david.wardle@svek.slu.se〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12738863" target="_blank"〉PubMed〈/a〉
    Keywords: Biomass ; *Carbon/analysis/metabolism ; Carbon Dioxide ; *Ecosystem ; *Fires ; Geography ; Light ; *Plant Development ; Soil/*analysis ; Sweden ; Trees/*growth & development
    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)
    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...