Agroforestry and Biodiversity Conservation in Tropical Landscapes
•A great number of secondary crops are grown together with the main food crops (Table 8.2). Unlike wild biodiversity, the agricu ...
A small fraction of the plant diversity of the original forest may be present in crop fields because some forest trees are prese ...
regrowth. The main function of gardening thus appears to be the propagation of useful trees rather than the immediate and direct ...
ative connotations, is appropriate because of the use value many such species have to rural people. Weeds, particularly herbaceo ...
functional diversity of weeds in crop fields and young fallows should not dis- tract us from the fact that their value from the ...
et al. 1988; Fuhr 1999; White 1994). Even in the secondary forest that is sometimes derived from fallow, the long period of vege ...
as vegetation and landscape structure, special habitat features, resource avail- ability, and hunting pressure. Less information ...
Work in shifting cultivation landscapes suggests some important patterns in the characteristics of bird communities. Terborgh an ...
through human modification of part of the habitat is greater than the number of forest species lost for the same reason. Composi ...
assemblages observed in that patch, irrespective of the habitat type that adjoins it. Although abundance patterns over disturban ...
explanation for between-patch type differences in total species richness; for example, the secondary vegetation in their study l ...
Cowlishaw and Dunbar 2000). In the same vein, Shankar Raman (1996) interprets contrasting patterns of habitat use by northeast I ...
reports toucans (Ramphastidae) and cotingas (Cotingidae) from fallows and crop fields and observes that their use of these habit ...
the land, it is probably because they have been expelled or extirpated by human activities (Wilkie and Finn 1990; Thomas 1991; L ...
of fallows means that disturbance frequency is increasing. Farmers are reluc- tant to abandon one of their most environmentally ...
the challenge of managing landscapes during those stages of landscape colo- nization is also self-evident. Beyond action related ...
in the species diversity of organisms with a coarse-grained perception of habi- tat, such as diurnal raptors, and undoubtedly ha ...
Box 8.2. Main Features of Community-Level Biodiversity in Shifting Cultivation Landscapes Cultivated plants belong mainly to a ...
manipulated to increase the number of animal and bird species using particu- lar habitat patches and therefore could increase th ...
Tr ee conservation is another measure that would obviously be more effective if taken during the early phases of frontier develo ...
«
5
6
7
8
9
10
11
12
13
14
»
Free download pdf