Results 211 to 220 of about 108,559 (264)
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1993
Abstract Egypt is perhaps the most arid country in North Africa. According to Ayyad and Ghabbour (1986), hot desert ecosystems cover all of Egypt and extend south to latitude 12°N in Sudan. Such hot ecosystems are either arid or hyperarid and it is possible to distinguish between three main hyperarid and two arid provinces (see Fig. 3.1).
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Abstract Egypt is perhaps the most arid country in North Africa. According to Ayyad and Ghabbour (1986), hot desert ecosystems cover all of Egypt and extend south to latitude 12°N in Sudan. Such hot ecosystems are either arid or hyperarid and it is possible to distinguish between three main hyperarid and two arid provinces (see Fig. 3.1).
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1988
Webster’s New World Dictionary defines vegetation as ‘plant life in general’. An older edition (Webster’s Collegiate Dictionary) called it ‘the sum of vegetable life’. Such definitions are not useful in any scientific discussion of vegetation mapping.
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Webster’s New World Dictionary defines vegetation as ‘plant life in general’. An older edition (Webster’s Collegiate Dictionary) called it ‘the sum of vegetable life’. Such definitions are not useful in any scientific discussion of vegetation mapping.
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1979
Vegetation dynamics is the study of changes in vegetation with time. Such changes were recognized as long ago as ca. 300 B.C. by Theophrastus [1], while increasingly detailed and critical descriptions have been made over the last three centuries [2].
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Vegetation dynamics is the study of changes in vegetation with time. Such changes were recognized as long ago as ca. 300 B.C. by Theophrastus [1], while increasingly detailed and critical descriptions have been made over the last three centuries [2].
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VEGETABLE EXTRACTS AS NATURAL SOURCES OF DYES
Acta Horticulturae, 1998Among cosmetic and food additives, dyes are receiving, in the past two decades, the largest number of adverse criticism. As a matter of fact, more than a real technological tool (as for example antimicrobics and emulsifiers) they simply represent an answer of industry to market needs.
Carrubba A., Calabrese I.
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The nature of vegetation and kinds of vegetation change
1990Before tackling the description and explanation of the processes of vegetation change, we need to set the stage by discussing the ways in which ecologists perceive the general nature of vegetation and vegetation change. The flora of a region (or of the world), is the complete range of plant species found there. The vegetation consists of assemblages of
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Natural Antimicrobials from Vegetable By-Products: Extraction, Bioactivity, and Stability
2020Nowadays, food plant agro-industrial processes are the main principal sources of a wide range of vegetable by-products, which have been considered as residues and despite its nutritional value are still discharged by industries, and their accumulation represents a severe environmental problem.
Gómez-García, Ricardo +4 more
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2016
The species composition of the vegetation in the Carpathian Basin is determined by the climate, relief, lithology/soil and hydrological conditions. Two main zonal vegetation types appear in Hungary: the zone of deciduous forests, which is dominated by oak and beech (especially in hilly and mountainous areas), and its most widespread forest type is the ...
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The species composition of the vegetation in the Carpathian Basin is determined by the climate, relief, lithology/soil and hydrological conditions. Two main zonal vegetation types appear in Hungary: the zone of deciduous forests, which is dominated by oak and beech (especially in hilly and mountainous areas), and its most widespread forest type is the ...
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Natural Vegetation in Agroecosystems
2000As today’s natural world becomes increasingly fragmented, formerly continuous habitats begin to resemble checkerboards composed of disparate pieces of various shapes and sizes. The ensuing landscape structure has considerable consequences for both managed and natural populations throughout the world. Even as we become more aware of the negative effects
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1958
Contained within the 3rd Edition (1957) of the Atlas of Canada is a map that shows the vegetation regions, and 19 smaller-scale maps showing distributions of particular plant species. The main map shows the distribution of 17 natural vegetation types and also shows non-vegetated areas (existing glaciers).
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Contained within the 3rd Edition (1957) of the Atlas of Canada is a map that shows the vegetation regions, and 19 smaller-scale maps showing distributions of particular plant species. The main map shows the distribution of 17 natural vegetation types and also shows non-vegetated areas (existing glaciers).
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NATURAL AND CULTURAL VEGETATION
The Professional Geographer, 1969(1969). NATURAL AND CULTURAL VEGETATION. The Professional Geographer: Vol. 21, No. 6, pp. 383-385.
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