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Data from: Post-fire response and genetic diversity in Erica coccinea: connecting population dynamics and diversification in a biodiversity hotspot
- 负责人：
- DOI：
- doi:10.5061/dryad.1644
- 摘要：
- Understanding the proceses of biological diversification is a central topic in evolutionary biology. The South African Cape fynbos, one of the major
Data from: Specialization to extremely low-nutrient soils limits the nutritional adaptability of plant lineages
- 负责人：
- DOI：
- doi:10.5061/dryad.44g1b
- 摘要：
- consistently low foliar nutrient concentrations in lineages showing specialization to extremely low-nutrient fynbos heathlands. These lineages also display lower
Data from: Host and habitat specialization of avian malaria in Africa
- 负责人：
- DOI：
- doi:10.5061/dryad.h12kh08n
- 摘要：
- in three bird communities in the lowland forests in Cameroon, highland forests in East Africa, and fynbos in South Africa. We calculated
Data from: Frequent and parallel habitat transitions as driver of unbounded radiations in the Cape flora
- 负责人：
- DOI：
- doi:10.5061/dryad.3ph7k
- 摘要：
- t include 340 species which are found in all vegetation types in the Cape flora and are ecologically dominant in fynbos. Using an almost complete (i.e. 98
Data from: Convergent and correlated evolution of major life-history traits in the angiosperm genus Leucadendron (Proteaceae)
- 负责人：
- 关键词：
- Macroevolution;reproductive strategies;life-history evolution;Leucadendron;phylogenetics;Coevolution
- DOI：
- doi:10.5061/dryad.18g80
- 摘要：
- , and seed-dispersal mode) and test hypotheses about their correlated evolution in the genus Leucadendron (Proteaceae) from the fire-prone South African fynbos
Data from: Interactions among predators and plant specificity protects herbivores from top predators
- 负责人：
- 关键词：
- DOI：
- doi:10.5061/dryad.6k939m4
- 摘要：
- this, we excluded birds from natural fynbos vegetation in South Africa using large netted cages and recorded changes in abundance relative to control plots for 199
Data from: Functional traits in parallel evolutionary radiations and trait-environment associations in the Cape Floristic region of South Africa
- 负责人：
- DOI：
- doi:10.5061/dryad.sc286
- 摘要：
- trait-environment relationships in two evolutionary radiations in the fynbos biome of the highly biodiverse Cape Floristic Region (CFR) of South Africa.
Data from: Distinct effects of pollinator dependence and self-incompatibility on pollen limitation in South African biodiversity hotspots
- 负责人：
- DOI：
- doi:10.5061/dryad.pt553
- 摘要：
- Global synthesis indicates that limitation of plant fecundity by pollen receipt (pollen limitation) is positively related to regional plant diversity and is higher for self-incompatible than self-compatible species. While self-incompatible species are always dependent on pollinating agents, self-compatible species may be pollinator-dependent or autofertile. This should cause variation in pollen limitation among self-compatible species, with lower pollen limitation in autofertile species because they do not depend on pollinators. We hypothesized that the intensity of pollen limitation in self-incompatible compared with pollinator-dependent self-compatible species should depend on whether pollen limitation is determined more by quantity than quality of pollen received. We compared pollen limitation between these three groups using a dataset of 70 biotically pollinated species from biodiverse regions of South Africa. Comparison with a global dataset indicated that pollen limitation in the South African biodiversity hotspots was generally comparable to other regions, despite expectations of higher pollen limitation based on the global plant diversity–pollen limitation relationship. Pollen limitation was lowest for autofertile species, as expected. It was also higher for pollinator-dependent self-compatible species than self-incompatible species, consistent with increased pollen-quality limitation in the former group due to negative consequences of pollinator-mediated self-pollination. However, there was a higher frequency of plants with zygomorphic flowers, which were also more pollen-limited, among pollinator-dependent self-compatible species. Thus, we could not attribute this difference in pollen limitation exclusively to a difference in pollen quality. Nevertheless, our results indicate that comparative studies should control for both pollinator dependence and self-incompatiblity when evaluating effects of other factors on pollen limitation.
Data from: Dated plant phylogenies resolve Neogene climate and landscape evolution in the Cape Floristic Region
- 负责人：
- DOI：
- doi:10.5061/dryad.pv332
- 摘要：
- of the Cape Fold Belt, where they have fostered the persistence of ancient fynbos lineages. The Middle Miocene (13–17 Ma) saw the development of perennial
Data from: Beyond climate: convergence in fast evolving sclerophylls in Cape and Australian Rhamnaceae predates the mediterranean climate
- 负责人：
- DOI：
- doi:10.5061/dryad.nh8c7
- 摘要：
- Morphological convergence in mediterranean-type ecosystems (MTEs) has long been interpreted as adaptation to climatic similarities among the five MTEs of the world. Here, we challenge this model using the globally distributed Rhamnaceae. We collected functional trait data (specific leaf area, leaf area, spinescence, leaf phenology, growth form and leaf margin type) and biome data to test for trait convergence in MTEs, for models of trait evolution and ancestral state reconstruction and for the effect of traits on speciation and extinction rates, using a phylogenetic framework. We show that leaf functional traits evolve to three optima, which correspond to (a) the edaphically specialized Australian and Cape MTEs (AC), (b) the mediterranean-type climates, but edaphically normal Chile, California and Mediterranean Basin (CCM), and (c) the non-mediterranean habitats. We find that Rhamnaceae in CCM are predominantly characterized by non-sclerophylly, the ancestral state in Rhamnaceae, and Rhamnaceae in AC by sclerophylly. These leaf character syndromes have evolved prior to mediterranean climates in MTEs, thereby failing to be adaptive to this selective regime. However, sclerophylly evolved contemporaneously with the transitions to AC, and may therefore be an adaptation to nutrient-poor soils. The evolution of sclerophylly has contributed to increased diversification rates of Pomaderreae in Australia and Phyliceae in the Cape, by reducing extinction rates and thereby facilitating evolutionary persistence. The historical relatively stable conditions in AC are consistent with this persistence hypothesis. Synthesis. In this study we integrate the fields of macroevolution and ecology and show that low extinction rates may not only account for the ecological, but also for the floristic dominance of sclerophylly in the hyperdiverse Australian and Cape mediterranean-type ecosystems.
