0198566123.pdf

little or no radiation (anagenesis), but instead by change in the island form away from the coloniz- ing phenotype along a singu ...

PART IV Islands and Conservation This view across the cemetery of Old San Juan, Puerto Rico is illustrative of the density of se ...

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The classical paradigm in ecology, with its emphasis on the stable state, its suggestion of natural systems as closed and self-r ...

the theoretical and operational principles of nature conservation and the long history of the conserva- tion movement are beyond ...

more effectively isolated than real islands that hap- pen to be located within a few hundred metres of a mainland. Many isolates ...

254 ISLAND THEORY AND CONSERVATION Box 10.1 Fluctuating asymmetry in a fragmented forest system Fluctuating asymmetry (FA) refer ...

about 400 individuals. Genetic variation within the population is still remarkably high (Tudge 1991). Nonetheless, the Drosophil ...

birds, as a result of a combination of habitat destruction, capture for pets, and slaughter (for food and to protect crops). Giv ...

mammals, and 18 reptiles. Across this data set, mean and median estimates of MVP were 7316 and 5816 adults, respectively. The va ...

occurring, the structure in the data indicates that the habitat and human influences dominate. These findings are consistent wit ...

woodland area and isolation. Overall, they found a mix of area-sensitivity, isolation-sensitivity, and compensatory area-isolati ...

number of populations, with some turnover. The authors concluded that there was evidence for both modes of extinction and also f ...

metapopulation structure might bestow better prospects of survival. The captive flock, of about 58 birds, is maintained within t ...

It is easy to underestimate the power of natural dispersal to re-supply isolated sites because the process is so difficult to ob ...

Thomas (1994) usefully reminds us that there are many reasons for species colonization of a patch, and they are not all island e ...

Following the island analogy, the first factors to be included are isolation and area. Increased iso- lation of reserves reduces ...

1990). The position adopted in this book, however, is that the EMIB has a place in a larger framework of island ecological theor ...

wardens do you need? Do you have to equip and manage park headquarters? In many situations, fewer larger reserves make more sens ...

keep the highest diversity of butterfly species by means of a number of small reserves, each targeted to provide particular key ...