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Butterflies, Rarity, And Conservation Practices.

Overview

According to Rabinowitz, there are seven forms of rarity. The complexity of the term "rare" which is used to identify at risk species requires a conservation tool to identify which rare species should receive limited funds and labor available for conservation. The first chapter of this dissertation examines the use of Rabinowitz' diagram to evaluate rarity in the butterfly community of Griffith Park. Rabinowitz' most critical form of rarity is the seventh form, defined as restricted ...
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Overview

According to Rabinowitz, there are seven forms of rarity. The complexity of the term "rare" which is used to identify at risk species requires a conservation tool to identify which rare species should receive limited funds and labor available for conservation. The first chapter of this dissertation examines the use of Rabinowitz' diagram to evaluate rarity in the butterfly community of Griffith Park. Rabinowitz' most critical form of rarity is the seventh form, defined as restricted distribution, habitat specialist and low abundance. A classic example of this seventh faun of rarity is the federally endangered Palos Verdes blue butterfly, Glaucopsyche lygdamus palosverdesensis , believed extinct for eleven years. Once identified as "at risk" species, various methods may be put in place to guard against extinction, including captive propagation. From 1995 until 2008, the captive rearing program for the Palos Verdes blue was designed to serve as an insurance policy and source of individuals to reintroduce to the wild, but it experienced limited success. The second chapter of this deals with the establishment of a new captive rearing protocol developed during the 2006 and 2007 rearing seasons. This new protocol resulted in an increase of the captive population from 186 individuals to 4513 individuals in two generations. The second chapter also addresses the need to have a dynamic approach to captive propagation as my experience with rearing Lange's Metalmark (Apodemia mormo langei ) demonstrates. With the increased success in the captive rearing program, there has been a wealth of data concerning Palos Verdes blue autecology.
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Product Details

  • ISBN-13: 9781243606648
  • Publisher: BiblioLabsII
  • Publication date: 9/4/2011
  • Pages: 222
  • Product dimensions: 7.44 (w) x 9.69 (h) x 0.47 (d)

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