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  • Apis mellifera  (1)
  • Conservation  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Agriculture and human values 14 (1997), S. 337-352 
    ISSN: 1572-8366
    Keywords: National parks ; Conservation ; Preservation ; France ; United Kingdom
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Greenline parks are typically regions of mixed agricultural,grazing, and forest lands of sufficient scenic and/orecological value to merit conservation and preservationunder a land-use management plan for land largely in privateownership. The Parcs Naturels Régionaux (PNR) are anational system of greenline parks created in France in1967 to protect agriculture and other values in less favoredareas (typically hills or low mountains) suffering depopulationand economic deprivation aggravated by the Common AgriculturalPolicy created under the European Economic Community in 1956with a major objective of self-sufficiency in food production.Two developments contributing to creation of the PNR were themechanization of French agriculture and increasing environmentalawareness in France. The PNR emphasizes rural agriculturaldevelopment, conservation, and recreation, but ecologicalpreservation has increased in importance, as reflected inrecent policy changes. The national parks of the United Kingdomare a system of greenline parks slightly older than the PNR.Recent research has allowed comparative studies of the twosystems, leading to the conclusion that the British NationalParks have suffered from heavy-handed centralized planningthat has alienated local farmers and communities, while thePNR, under more local control, has neglected some of itsconservation and preservation responsibilities. However,recent policy reform promises to improve the PNR throughmore rigorous enforcement of conservation and ecologicalgoals by the central government.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1939
    Keywords: Apis mellifera ; Lavandula stoechas ; Pollen content ; Nectar content ; Foraging preference
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Bees foraging for nectar should choose different inflorescences from those foraging for both pollen and nectar, if inflorescences consist of differing proportions of male and female flowers, particularly if the sex phases of the flowers differ in nectar content as well as the occurrence of pollen. This study tested this prediction using worker honey bees (Apis mellifera L.) foraging on inflorescences of Lavandula stoechas. Female flowers contained about twice the volume of nectar of male flowers. As one would predict, bees foraging for nectar only chose inflorescences with disproportionately more female flowers: time spent on the inflorescence was correlated with the number of female flowers, but not with the number of male flowers. Inflorescence size was inversely correlated with the number of female flowers, and could be used as a morphological cue by these bees. Also as predicted, workers foraging for both pollen and nectar chose inflorescences with relatively greater numbers of both male and female flowers: time spent on these inflorescences was correlated with the number of male flowers, but not with the number of females flowers. A morphological cue inversely associated with such inflorescences is the size of the bract display. Choice of flowers within inflorescences was also influenced predictably, but preferences appeared to be based upon corolla size rather than directly on sex phase.
    Type of Medium: Electronic Resource
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