Conservation of Genetic Resources: Costs and Implications by Detlef Virchow

By Detlef Virchow

Over the prior decade the significance of typical assets for sustainable agricultural improvement has been more and more mentioned at overseas boards and meetings. apart from the sustainable administration of soil, water, and air, it now appears accredited that the sustainable administration of genetic assets is without doubt one of the 4 quintessential preconditions for a sustainable agriculture. The dialogue on conservation of plant genetic assets for nutrients and agriculture (PGRFA), besides the fact that, has to mirror the prices of conservation besides. those haven't but been mentioned intensively. The examine analyzes the conservation expenditures of plant genetic assets; it additionally assesses the effectiveness of conservation and the potency of the various conservation tools. it truly is in accordance with large surveys in proper international locations. Following the distinct price and impression research, the implications express that the effectiveness of conservation concepts can be increased.

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Extra resources for Conservation of Genetic Resources: Costs and Implications for a Sustainable Utilization of Plant Genetic Resources for Food and Agriculture

Example text

Jenkins (1992) points out that species richness as well as habitat destruction in the forests is not distributed evenly. , the fact of the "hot spots" of potential extinction must be reflected in these calculations. S. counties, Dobson et ai. A. are only found in relatively few critical geographical areas - the "hot spots" of potential extinction (1997). Furthermore, the estimates assume that forest conversion means total habitat destruction. Taking the different conversion possibilities mentioned above into account, the habitats are, however, often modified without resulting in the total extinction of given species.

The collection could be restored only because India had sent the duplicated material to IRRI (IPGRI, 1995). 3 Similarities and Differences Between Biodiversity and Agrobiodiversity If biodiversity is used as a synonym for plant genetic resources in general and agrobiodiversity for PGRFA, it implies that agrobiodiversity is only a subsystem of biodiversity and that both can therefore be treated in one system. Although there are similarities between biodiversity and agrobiodiversity, the existing differences recommend a differentiation of both diversity forms.

In addition to the direct impact of human intervention, the interaction of human intervention with the stochastic processes is causing an over-proportional loss of species. This process of isolation and fragmentation of populations leads to an accelerated and over-proportional extinction of species (Schaffer, 1987). Difficulties in recording extinction rates of plants are caused by the lack of documentation of existing species at a given time in the past. It is difficult to unequivocally demonstrate that extinction has occurred, because many species may continue to persist for years in the seeds before germinating (Jenkins, 1992).

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