Showing papers in "Biological Conservation in 1969"

TL;DR: The biological interest of chalk grassland is discussed under three headings: the richness of the flora and fauna, the presence of more than 60 species of plants in England alone which are restricted to the chalk or other calcareous grasslands, and the concept that chalk grasslands is a well-defined ecosystem as mentioned in this paper.

TL;DR: Interim recommendations are made for the management of nature reserves in which diversity of the fauna is an important object of management.

TL;DR: In the case of the lower Thames, the majority of the fish caught were freshwater species, with one exception, only marine or euryhaline species have been caught as mentioned in this paper.

TL;DR: The chlorinated hydrocarbon insecticides are now among the world's most widely distributed synthetic chemicals, contaminating a substantial part of the biosphere as discussed by the authors, and they are dispersed throughout the environment in currents of air and water.

TL;DR: The biology and conservational needs of the local race of the Quetzal, Pharomacrus mocinno moc Finno, Trogonidae, perhaps the most beautiful bird on earth are investigated, and the predictable values of conservation measures to the species and its habitat are outlined.

TL;DR: Many Fallow Deer killed accidentally in Epping Forest in 1965 and 1966 showed evidence of having been involved in accidents prior to the fatal one, and many also exhibited degenerative lesions of unknown aetiology in one or more bones, the incidence appearing to increase with age.

TL;DR: The species with the greatest coverage, Festuca rubra in the upper marsh, Puccinellia maritima in the mid-marsch, and Spartina townsendii in the lower marsh, had all recovered more or less completely by June 1968.

TL;DR: Cupressus dupreziana, represented today by not more than 200 adult trees in the central Sahara, is perhaps a local adaptation of a population that until recently was continuous, and whose other living representative would be C. atlantica as discussed by the authors.

TL;DR: Game ranching has been successfully used in the management of wild animals for scientific and aesthetic reasons and as a source of delight to, and revenue from, increasing numbers of tourists as discussed by the authors.

TL;DR: The Atlantic Ridley Sea-turtle (Lepidochelys kempi) and the south-west Atlantic enclave of the Pacific species (L. olivacea) should also be safe if protection at the important Surinam nesting-beach is continued as discussed by the authors.

TL;DR: In this article, conservation of diversity should be the primary aim of conservation; it is best achieved by conserving a wide range of habitats in nature reserves, and conservation measures outside nature reserves are unlikely to succeed unless they coincide with some other interests.

TL;DR: In this article, the problem of insufficient research effort has been put into the pre-impoundment phase of man-made lakes and the inherent variability of each lake-site makes prediction hazardous.

TL;DR: Land consolidation is a system of technical and legal measures for the improvement of farming conditions and land productivity in the Netherlands as mentioned in this paper, which can be classified into three categories: technical, organizational, and financial.

TL;DR: The total radiation doses which have, or will be, received as a result of the testing of nuclear weapons hitherto, are on average small in relation to natural background radiation.

TL;DR: Much can be done to maintain richness of variety by conscious development of the odd, uncultivable corners that exist on every farm and thus encourage the woodland and scrubland species which have traditionally exploited marginal farmland habitats.

TL;DR: The main cause of deliberate oil pollution of the seas is the cleaning out of oil tanks and means of abolishing it are discussed in this article, and the prospects of the termination of oil pollution are considered.

TL;DR: In this paper, the field research opportunities which seem most urgent are identified, in the hope that such agencies may be encouraged to support active conservation work, based on information contained in the Red Data Book Vol. 1 ∗.

TL;DR: With the progressive elimination of natural habitats as the world's human population increases out of all bounds, some hope lies on the comparatively new concept of conservation of animals through breeding them in captivity, although the proper place to conserve a species whenever possible is in the wild.

TL;DR: The former Ordinance includes certain butterflies and fish as well as numerous birds, but it is pointed out that as yet there is no such provision for the protection of habitats in the Territory other than that provided in gazetted National Parks.

TL;DR: The work of the IUCN's six Commissions, from the time of the transfer of the Headquarters from Belgium to Switzerland in 1961 right up to the Biosphere Conference in September 1968, is described under five headings; conferences and meetings, the conservation of areas and species, education, legislation, and the development of natural resources.

TL;DR: The National Parks of Tanzania as mentioned in this paper have shown that the tourist trade is expanding very rapidly and the problems are not those of enticing visitors in, but of providing adequate facilities for the evergrowing numbers of people who wish to see East Africa and its wildlife for themselves.

TL;DR: The notion of conservation des ressources naturelles restait encore en second plan, derriere le besoin deja ressenti avec acuite de preserver des especes de l'extinction and des paysages de la destruction.

TL;DR: The conservation and renewal of natural resources demands complex research of everincreasing importance as mentioned in this paper, and the purpose of this research must be the setting up of basic theoretical principles and legal norms for the overall conservation of nature and the formulation of practical recommendations.

TL;DR: The paper gives five examples of the use of natural principles and ecological concepts in landscape design, and makes the point that change and evolution are historical facts in landscape, but that new changes should take account of the ‘physiology and anatomy’ of landscape.