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Cross-taxon congruence in species diversity in non-forest habitats
Hřebíková, Veronika ; Sedláček, Ondřej (advisor) ; Černý, Martin (referee)
Estimating of the overall species diversity at any place on Earth is very difficult. Generally, we use only several surrogate taxa for predicting of species diversity of other groups. Typically, these surrogates are represented by well observable and conspicuous organisms (e.g. plants, butterflies, large beetles, birds). The first part of my theses presents the basic insight in the species concepts used in biodiversity conservation - umbrella, indicator, flagship, and surrogate species. The second part focuses on the use of these concepts in practice. I discuss the conclusion of studies that focus on evaluation of species concepts in biodiversity conservation, with a special regard on non-forest habitats. In the last chapter, I deal with the impact of management practices in non-forest habitats on different taxa of organisms. KEYWORDS: biodiversity, keystone species, umbrella species, flagship species, surrogate species, non-forest biotops, management
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Cross-taxon congruence in species diversity in non-forest habitats
Koštíř, Vojtěch ; Sedláček, Ondřej (advisor) ; Tropek, Robert (referee)
Relationships between different groups of organisms are one of the major factors shaping Earth's ecosystems. This thesis analyses correlations in species composition and species richness at different spatial scales. Knowledge of these so-called cross-taxon congruences are crucial for proper nature conservation and management of species-rich localities of non-forest habitats. One of the main aims of the thesis was to find suitable surrogate groups for biodiversity conservation in non-forest habitats. Invertebrates and vascular plants are generally good surrogate groups for biodiversity conservation. For example, ground beetles seem to have good correlations in species richness at large spatial scales. However, their importance deeply declines at small spatial scales. At both scales, the species richness of ants and butterflies positively correlates with general species richness. Vertebrates, on the other hand, appear to be a bad surrogate taxon, except for birds which can be placed into a shopping basket with invertebrates and plants. At small scales, species composition differs with the type of agricultural use at studied localities. Umbrella species can be selected from these specific species communities. Best umbrella species for non-forest habitats are invertebrate herbivores such as butterflies...
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Cross-taxon congruence in species diversity in non-forest habitats
Hřebíková, Veronika ; Sedláček, Ondřej (advisor) ; Černý, Martin (referee)
Estimating of the overall species diversity at any place on Earth is very difficult. Generally, we use only several surrogate taxa for predicting of species diversity of other groups. Typically, these surrogates are represented by well observable and conspicuous organisms (e.g. plants, butterflies, large beetles, birds). The first part of my theses presents the basic insight in the species concepts used in biodiversity conservation - umbrella, indicator, flagship, and surrogate species. The second part focuses on the use of these concepts in practice. I discuss the conclusion of studies that focus on evaluation of species concepts in biodiversity conservation, with a special regard on non-forest habitats. In the last chapter, I deal with the impact of management practices in non-forest habitats on different taxa of organisms. KEYWORDS: biodiversity, keystone species, umbrella species, flagship species, surrogate species, non-forest biotops, management
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