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  • 1
    Monograph available for loan
    Monograph available for loan
    Global loss of coastal habitats : rates, causes and consequences (2009)
    Bilbao : Fundación BBVA
    Details Availability
    Call number: PIK N 076-10-0181
    Description / Table of Contents: Contents: Introduction ; 1. Nutrient pollution, eutrophication, and the degradation of coastal marine ecosystems ; 2. Loss of seagrass meadows from the Spanish coast: results of the Praderas project ; 3. Global trajectories of seagrasses, the biological sentinels of coastal ecosystems ; 4. Global losses of mangroves and salt marshes ; 5. Confronting the global decline of coral reefs
    Type of Medium: Monograph available for loan
    Pages: 175 S. : Ill., graph. Darst.
    ISBN: 9788496515840
    Location: A 18 - must be ordered
    Branch Library: PIK Library
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  • 2
    Electronic Resource
    Electronic Resource
    Winners and losers in Framework programme (1999)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 400 (1999), S. 14-14 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SirWe have examined the performance of the countries included in the recently completed fourth Framework programme of research and technology in the European Union (EU). We found that this programme cost about 3% of total research and development (R&D) expenditure ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/21768
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  • 3
    Electronic Resource
    Electronic Resource
    MACROPHYTE STANDING CROP AND PRIMARY PRODUCTWITY IN SOME FLORIDA SPRING-RUNS (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 26 (1990), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : A survey of 31 Florida spring-runs was conducted to estimate their submerged macrophyte standing crop and primary productivity. The standing crops of submerged vegetation were not significantly (p 〉 0.05) correlated to either total nitrogen (r = 0) or total phosphorus (r =−0.20) concentrations, but standing crops were significantly (p 〈 0.01) correlated to the percentage of the spring-run's water surface shaded by marginal vegetation (r =−0.76). Maximum daily rates of primary productivity were positively correlated with average submerged macrophyte standing crops (r = 0.81; p 〈 0.001) and inversely correlated with the degree of shading by marginal vegetation (r =− 0.43; p 〈 0.05).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1990.tb01426.x
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  • 4
    Electronic Resource
    Electronic Resource
    Comparative analyses in aquatic microbial ecology: how far do they go? (2000)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology ecology 31 (2000), S. 0 
    Details
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Methodological developments in recent years have led to an increase in empirical databases on the abundance and functions of aquatic microbes, now allowing synthesis studies. Most of these studies have adopted a comparative approach, such that comparative analyses are now available for most aspects of aquatic microbial food webs (more than 50 papers published in the last 15 years). Some of these analyses apparently yield conflicting results, introducing confusion and unnecessary disputes in the field. We briefly review the comparative analyses so far produced and we highlight generalities, show that some of the perceived discrepancies largely derive from partial analyses of a general underlying trend and formulate predictions based on these general trends that provide new avenues for research.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6941.2000.tb00675.x
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  • 5
    Electronic Resource
    Electronic Resource
    The determination of the age and growth of SE Asian mangrove seedlings from internodal counts (1999)
    Springer
    Mangroves and salt marshes 3 (1999), S. 251-257 
    Details
    ISSN: 1572-977X
    Keywords: Avicennia alba ; growth ; internodal sequences ; mangrove age determination ; Rhizophora apiculata ; Sonneratia caseolaris ; Thailand
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The occurrence of periodic changes in the length of the internodes of the seedlings of SE Asian mangrove species (Rhizophora apiculata, Avicennia alba, and Sonneratia caseolaris) growing in the Pak Phanang estuary (Nakhon Si Thammarat, SE Thailand) was confirmed. The annual nature of these periodic changes was verified through comparisons with the observed average number of internodes produced by plants tagged for one year. The cycles in the sequence of internodal length of the seedlings had an average (± SE) period of 16.0 ± 0.78 internodes for Avicennia alba, 25.0 ± 1.2 internodes for Sonneratia caseolaris, and 8.29 ± 0.40 internodes for Rhizophora apiculata. These values are remarkably close to, and not significantly different (t‐test, P 〉 0.05) from the average (± SE) annual number of internodes of 17.6 ± 0.8 for Avicennia alba, 28.8 ± 2.1 for Sonneratia caseolaris, and 8.03 ± 0.36 for Rhizophora apiculata produced in a year by tagged plants. In addition, the average (± SE) growth of the tagged plants was 0.39 ± 0.018 cm day-1 for Avicennia alba, 0.24 ± 0.015 cm day-1 for Sonneratia caseolaris, and 0.091 ± 0.0036 cm day-1 for Rhizophora apiculata. These estimates were very close to those (0.45 ± 0.06 cm day-1 for Avicennia alba, 0.32 ± 0.01 cm day-1 for Sonneratia caseolaris, and 0.13 ± 0.005 cm day-1 for Rhizophora apiculata) derived as the product of the mean number of internodes produced per day, calculated from the inferred number of internodes produced per year, and the mean length of the internodes of the plants. These findings indicate that the use of regular, annual changes in the length of the internodes of mangrove seedlings can be used reliably to determine their age and to estimate their growth rate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009967401337
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  • 6
    Electronic Resource
    Electronic Resource
    Uncertainty of detecting sea change (1992)
    [s.l.] : Nature Publishing Group
    Nature 356 (1992), S. 190-190 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] GROWING concern about human influence on marine ecosystems conflicts with our inability to separate man-made from 'natural' change. This limitation results from the lack of adequate baselines and uncertainty as to whether observed changes are local or on a broad scale. Long-term monitoring ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/356190a0
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  • 7
    Electronic Resource
    Electronic Resource
    Respiration in the open ocean (2002)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 420 (2002), S. 379-384 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A key question when trying to understand the global carbon cycle is whether the oceans are net sources or sinks of carbon. This will depend on the production of organic matter relative to the decomposition due to biological respiration. Estimates of respiration are available for the top layers, the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature01165
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  • 8
    Electronic Resource
    Electronic Resource
    Computational redesign of endonuclease DNA binding and cleavage specificity (2006)
    [s.l.] : Nature Publishing Group
    Nature 441 (2006), S. 656-659 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The reprogramming of DNA-binding specificity is an important challenge for computational protein design that tests current understanding of protein–DNA recognition, and has considerable practical relevance for biotechnology and medicine. Here we describe the computational redesign of the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature04818
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  • 9
    Electronic Resource
    Electronic Resource
    Broad-scale comparison of photosynthetic rates across phototrophic organisms (1996)
    Springer
    Oecologia 108 (1996), S. 197-206 
    Details
    ISSN: 1432-1939
    Keywords: Plant allometry ; Photosynthetic metabolism ; Photosynthetic structures ; Thickness ; Chlorophyll a concentration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract We tested the existence of general patterns in the photosynthetic metabolism of oxygen-evolving organisms, based on a compilation of data for 315 species ranging from cyanobacteria to tree leaves. We used thickness and chlorophyll a concentration of the photosynthetic structure (cell, thallus, leaf) to scale differences in photosynthetic metabolism among plants, because of the demonstrated importance of these plant traits in regulating light absorption properties and photosynthetic rates of particular plant groups. We examined only the properties of the photosynthetic structure because this is the plant unit responsible for the photosynthetic process and thus is closely related to plant productivity, whereas there is a lack of general quantitative descriptors of the whole organism useful for such broad-scale comparisons, and few studies report net photosynthetic rates of whole organisms, including respiration rates of all non-photosynthetic structures. The results demonstrated that descriptors of plant metabolism such as maximum net photosynthesis, initial slope of the photosynthesis-irradiance (PI) curve and dark respiration display strong positive interrelationships. The metabolic rates declined with increasing thickness of the photosynthetic structures and more steeply for photosynthesis than respiration. Photosynthetic rates also changed with increment of volume of the photosynthetic structure resembling patterns that have been previously described for animal metabolism related to body weight. The strong relationship of metabolic rate and chlorophyll a concentration to the thickness of photosynthetic tissue reflects broad-scale patterns and not the adaptive response of individual or closely-related species of similar tissue thickness to varying environmental conditions. Thickness of the photosynthetic structures, therefore, plays an important role in the environmental control of plant performance and, consequently, it might have been an important driver of plant evolution, setting thresholds to the metabolism and productivity of phototrophic organisms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00334642
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  • 10
    Electronic Resource
    Electronic Resource
    To produce many small or few large eggs: a size-independent reproductive tactic of fish (1989)
    Springer
    Oecologia 80 (1989), S. 401-404 
    Details
    ISSN: 1432-1939
    Keywords: Teleostean fish ; Fish eggs ; Reproductive tactics ; Pelagic-demersal eggs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We demonstrate here the existence of a range of size-independent reproductive tactics in teleostean fish involving the allocation of a size-dependent reproductive effort between fecundity and egg size. Despite considerable evidence that larger eggs and the larvae hatching from them are more likely to survive than smaller ones, we found no evidence of evolutionary trends towards greater egg sizes. Fish with pelagic eggs tend to spawn many, and therefore small, eggs, whereas demersal spawners tend to produce large, and therefore few, eggs. Maximizing egg number should increase the number of eggs hatching in suitable locations in the patchy pelagic environment and, hence, increase the reproductive success of pelagic spawners. On the other hand, the reproductive success of demersal spawners, which reduce the variance in growing conditions experienced by the off spring, should be more dependent on the survival of the individual larvae, which increases as egg size increases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00379043
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