By Gordon W. Frankie, Alfonso Mata, S. Bradleigh Vinson
The gorgeous tropical dry wooded area of northwest Costa Rica, with its hugely seasonal rainfall and diversely vegetated panorama, is disappearing much more quickly than Costa Rica's better-known rain wooded area, basically since it has been more straightforward to transform to agriculture. This e-book, in keeping with greater than thirty years of research, bargains the 1st finished examine the ecology, biodiversity, and conservation prestige of this endangered and fragile sector. The participants, from Costa Rica, Britain, Mexico, and the USA, and representing the fields of ecology, environmental schooling, coverage, and the legislation, research the key plant and animal teams dwelling within the dry wooded area and current the 1st technical assessment of Costa Rica's conservation efforts.As they check the prestige in their zone of distinctiveness within the dry woodland, the members additionally glance past this actual quarter to teach how its vegetation and animals are ecologically and evolutionarily attached to different geographic parts in Costa Rica and vital the USA. Their chapters disguise themes equivalent to watershed and coastal administration, plant phenology, pollination, bugs, birds, mammals, amphibians, and reptiles. in addition they give some thought to the socioeconomic, coverage, felony, and political features of biodiversity conservation, giving the quantity a wide-ranging standpoint and creating a specific contribution to our wisdom of the tropical dry wooded area. The e-book concludes with a big synthesis of the members' tips about destiny instructions, guidelines, and activities that would larger preserve biodiversity in Costa Rica and different neotropical forests to boot.
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The question, then, is, Does forest fragmentation change pollinator behavior so that pollen movement is reduced to the extent that over several generations genetic diversity is lost via genetic drift and rates of inbreeding increase within the remaining fragments? In the following sections we ﬁrst examine theoretical expectations of the effects of fragmentation on the frankie chap 03 8/20/03 7:49 PM Page 31 genetic composition of tropical dry-forest tree populations. We then review case studies of the breeding structure of several Neotropical dryforest tree species located in fragmented landscapes to determine if gene ﬂow is sufﬁcient to increase the low effective population sizes that often characterize fragmented tropical tree populations.
Haber unpubl. data), which is much less diverse and abundant than in the dry forest (Frankie et al. 1976, 1983; Heithaus 1979). An example of dry-forest bee diversity and abundance was demonstrated in 1972 through intensive sampling conducted on the large beeﬂower tree, Andira inermis (Fabaceae) at the southern limit of the town of Liberia (see maps in chapter 1 and Frankie et al. 2002: 329). At that time high numbers of Centris bees, consisting of several species, were sampled from several trees and shown to make intertree movements at rates that accounted for cross-pollination of this self-incompatible species (Bawa 1974; Frankie et al.
G. W. Frankie, and H. G. Baker. 1976. Rainfall as a factor in the release, timing, and synchronization of anthesis by tropical trees and shrubs. Journal of Biogeography 3:231–36. Opler, P. , G. W. Frankie, and H. G. Baker. 1980. Comparative phenological studies of shrubs in tropical wet and dry forests in the lowlands of Costa Rica. Journal of Ecology 68:167–18. , P. Yeo, and A. Lack. 1996. The natural history of pollination. : Timber Press. 479 pp. Sage, R. D. 1968. Observations on feeding, nesting, and territorial behavior of carpenter bees genus Xylocopa in Costa Rica.