Published online by Cambridge University Press: 06 July 2010
Introduction
Conservation biology is a fairly new, multidisciplinary science that has developed to deal with the crisis confronting biological diversity (Primack 1993). As a crisis discipline, conservation biology arose in response to an increasingly formulated political demand to face the dramatic loss of biodiversity and the need to take steps to anticipate, prevent, and reverse the trend (Heywood & Iriondo 2003). Subsequent ratification of the Convention on Biological Diversity at the United Nation conference held in Rio in 1992 by most of the world's governments has placed the subject of biodiversity firmly on the political agenda.
The past few years have witnessed a major evolution in our understanding of conservation. The increasing need for performing tools has rendered conservation biology a truly multidisciplinary science, feeding on a variety of other areas, including ecology, demography, population biology, population genetics, biogeography, landscape ecology, environmental management, and economics (Heywood & Iriondo 2003). Conservation interest has also been progressively enlarged to include a broad array of taxa that used to be completely overlooked. Cryptogams were, for example, the focus of only about 4% of published papers between 2000 and 2005 in leading conservation journals (Hylander & Jonsson 2007). The situation has been most recently changing and there has been an increasing awareness of the necessity to include cryptogams in general, and bryophytes in particular, in conservation programs (Hylander & Jonsson 2007).
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