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  • 1
    Publication Date: 2019
    Description: 〈div data-abstract-type="normal"〉〈p〉Effective wildlife monitoring is a prerequisite for effective wildlife conservation since, without time-series data on species populations and threats, evidence-based adaptive management will be difficult to achieve. Technological advances in remote sensing offer more opportunities for data collection than ever before. However, if we are to enhance data sharing and the use of data by decision-makers, methods must be relevant to local user needs and be integrated into monitoring schemes with appropriate goals and indicators.〈/p〉〈/div〉
    Print ISSN: 0376-8929
    Electronic ISSN: 1469-4387
    Topics: Biology
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  • 2
    Publication Date: 1951-01-01
    Description: SummaryAn account of surveying in the Falkland Islands Dependencies could be treated as just another description of surveying in one of the outlying parts of the Empire. There is one major difference in comparison with other Colonies, however, which affects the whole outlook and conduct of the survey. This is that in the part of the Dependencies with which we are concerned, namely Graham Land and the Islands to the north, there is no permanent human habitation and no regular means of communication.I must refer briefly to the historical background of these surveys and the reason for their commission, especially the latter, as without a full understanding of the need and future use of a survey one cannot examine critically the methods used.Next I shall describe the methods of survey that have been used, which will inevitably entail describing the type of country and various difficulties peculiar to the polar regions.A summary of the accomplishments up to date will be very brief, as these are shown in the maps that have been published by the Directorate of Colonial Surveys and some of which will be on exhibition.Finally I shall consider some proposals for future surveys in this territory.
    Print ISSN: 0032-2474
    Electronic ISSN: 1475-3057
    Topics: Ethnic Sciences , Geography
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  • 3
    Publication Date: 2019-06-25
    Description: SummaryEffective wildlife monitoring is a prerequisite for effective wildlife conservation since, without time-series data on species populations and threats, evidence-based adaptive management will be difficult to achieve. Technological advances in remote sensing offer more opportunities for data collection than ever before. However, if we are to enhance data sharing and the use of data by decision-makers, methods must be relevant to local user needs and be integrated into monitoring schemes with appropriate goals and indicators.
    Print ISSN: 0376-8929
    Electronic ISSN: 1469-4387
    Topics: Biology
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  • 4
    Publication Date: 2018-11-22
    Description: The Iberia–Newfoundland continental margin is one of the most-studied conjugate margins in the world. However, many unknowns remain regarding the nature of rifting preceding its break-up. We analyse a large dataset of tectonic subsidence curves, created from publicly available well data, to show spatial and temporal trends of rifting in the proximal domains of the margin. We develop a novel methodology of bulk averaging tectonic subsidence curves that can be applied on any conjugate margin with a similar spread of well data. The method does not rely on the existence of conjugate, deep seismic profiles and, specifically, attempts to forego the risk of quantitative bias derived from localized anomalies and uncertain stratigraphic dating and correlation. Results for the Iberia–Newfoundland margin show that active rift-driven tectonic subsidence occurred in the Central segment of the conjugate margin from c. 227 Ma (early Norian) to c. 152.1 Ma (early Tithonian), in the southern segment from c. 208.5 Ma (early Rhaetian) to c. 152.1 Ma (early Tithonian) and in the northern segment from c. 201.3 Ma (early Hettangian) to c. 132.9 Ma (early Hauterivian). This indicates that rifting in the stretching phase of the proximal domain of the Iberia–Newfoundland margin does not mirror hyperextended domain rifting trends (south to north) that ultimately led to break-up. The insights into broad-scale three-dimensional spatial and temporal trends, produced using the novel methodology presented in this paper, provide added value for interpretation of the development of passive margins, and new constraints for modelling of the formation of conjugate margins.
    Print ISSN: 0016-7568
    Electronic ISSN: 1469-5081
    Topics: Geosciences
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