Flora Zambesiaca: Orchidaceae PDF Download
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Author: Arthur Wallis Exell
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 268
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Book Description
Deals with the flowering plants and is being issued according to a numbered chronological sequence. Vol. on Pteridophyta by E.A.C.L.E. Schelpe was issued in 1970 without number and is classified separately.
Author: Arthur Wallis Exell
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 268
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Book Description
Deals with the flowering plants and is being issued according to a numbered chronological sequence. Vol. on Pteridophyta by E.A.C.L.E. Schelpe was issued in 1970 without number and is classified separately.
Author:
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 1318
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Author:
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 560
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Book Description
Author: Pavel Kindlmann
Publisher: Frontiers Media SA
ISBN: 2832528538
Category : Science
Languages : en
Pages : 162
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Book Description
Understanding diversity patterns and the effect of global change on abundance, distribution patterns and species survival are of the most discussed topics in biodiversity research. Species are disappearing worldwide, mostly due to habitat loss, but other factors like climate change are likely to increase in importance during the 21st century. Thus, one of the most worrying issues is that we still do not know the optimal abiotic and biotic requirements for population persistence of many of the still existing species, which makes it very difficult, if not impossible, to make appropriate recommendations for their conservation in terms of proposing an effective management of their sites. Analysis of these requirements is, however, strongly dependent on the taxonomic group considered and on life history strategies of the species that comprise the group. In this Research Topic, we concentrate on this issue applied to orchids, one of the most abundant groups of flowering plants with approximately 30,000 species. They are classified among the most threatened groups worldwide. Of the approximately 1000 species that have been evaluated, almost 60% are threatened, endangered or extinct. For a few orchid species, detailed records from monitoring efforts provide opportunities for comparative analyses of species declines through time. However, for most orchid species we still lack population data and there have been few studies that have focused on the environmental factors and species traits associated with the decline of orchid sites and species numbers.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 416
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Author:
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Category : Agriculture
Languages : en
Pages : 1516
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Author: Royal Botanic Gardens (Kew).
Publisher:
ISBN: 9780117829107
Category :
Languages : en
Pages : 414
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Author:
Publisher:
ISBN:
Category : Plant breeding
Languages : en
Pages : 1648
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Author:
Publisher:
ISBN:
Category : Angiosperms
Languages : en
Pages : 344
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Book Description
Indexes literature on flowering plants that include color photographs or illustrations.
Author: Philippines. Bureau of Science
Publisher:
ISBN:
Category :
Languages : en
Pages : 594
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Book Description
