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  • Articles: DFG German National Licenses  (3)
  • biodiversity  (2)
  • barnacle  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Environmental and resource economics 4 (1994), S. 29-53 
    ISSN: 1573-1502
    Keywords: Natural resource accounting ; ecological monitoring ; biodiversity ; sustainability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Economics
    Notes: Abstract The role that natural resource accounting and ecological monitoring can play in conserving biological diversity is discussed. There exists a widespread view that modifications to national income accounting procedures are crucial to the pursuit of sustainability and particularly the protection of biodiversity. However, we argue that the availability of biologically-adjusted national income figures would not, of itself, be likely to contribute significantly to the protection of biological resources. The conservation of biodiversity requires, among other things, a significantly improved understanding of the nature of environmental changes arising from imposed management regimes and the effects that these changes have on the persistence of biodiversity. On this basis, and in the context of sustainable development, we suggest that ecological monitoring should take priority over the generation of economic data. In many regions of the world sufficient ecological knowledge is available to design and implement integrated monitoring networks that can be used to track the status of many components of biodiversity and inform decisions taken over their management. We outline how this might be undertaken using a hierarchical and prioritised approach aimed, pragmatically, in the first instance at helping to preserve those ecosystems, communities and species which are perceived to be most threatened. Some emphasis is given to the Australian situation because it is the only rich megadiversity nation and it is at the forefront of the development of scientific techniques that can be used to help design soundly-based and cost-effective monitoring programs.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-5117
    Keywords: barnacle ; biofilm ; cypris ; recruitment ; fouling ; microalgae ; succession ; rocky ; intertidal
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Barnacle cypris larvae show considerable exploratory behaviour prior to habitat selection. The influence of natural epilithic microbial fouling organisms on the settlement of Semibalanus balanoides cyprids (Crustacea: Cirripedia) was examined using laboratory and field based investigations. In choice chambers, cues from microbial films were important; cyprids preferred surfaces with a mature microbial film to either unfilmed surfaces or those with a developing film. Cyprids also discriminated between filmed rocks from different tidal heights, preferentially selecting those from the mid-shore which is their usual zone. Filmed surfaces which had previously been colonised by barnacles were selected in preference to unfilmed surfaces, but the presence of an adult barnacle did not enhance settlement on either filmed or unfilmed surfaces. However, laboratory experiments were not consistent with settlement in the field which was predominantly influenced by the proximity of conspecifics and by traces of previous barnacle colonisation. These factors increased settlement, and seemed to over-rule cues from microbiota within the film. Difficulties in the application of laboratory based studies to settlement in the natural environment are discussed.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Biodiversity and conservation 5 (1996), S. 1143-1167 
    ISSN: 1572-9710
    Keywords: uncertainty ; ecology ; policy ; sustainability ; biodiversity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Using an Australian focus to explore theoretical and policy issues of wider concern, this article examines linkages between public policy and the science of ecology. This is done within the broader framework of sustainability, emphasizing the problem of decision making in the face of ‘uncertainty’. Insights from the ecological, risk, sustainability and policy literatures are used. The sustainability-uncertainty problem is characterized, and the adequacy of existing policy support techniques and approaches noted, particularly the precautionary principle. The problem is further defined using the notion of ignorance. The treatment of ignorance and uncertainty in ecology is discussed. We suggest that the science of ecology has had a limited influence on policy formulation and discuss the basis of this using biodiversity conservation and ecosystem management as examples. We conclude by considering challenges for handling risk, uncertainty and ignorance in ecological science for policy formulation. We emphasize the need for improved communication between the science and policy communities, greater recognition of the limits of quantitative techniques in addressing uncertainty, and contingency planning.
    Type of Medium: Electronic Resource
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