Find research datasets worth reusing

Fig. 6 in Ground beetles (Coleoptera: Carabidae) from the region of Cape Emine (Central Bulgarian Black sea coast). Part I. Taxonomic and zoogeographic structure, life forms, habitat and humidity preferences

Fig. 6. Proportions of the species according to the type of preferred habitat.

Fig. 7 in Ground beetles (Coleoptera: Carabidae) from the region of Cape Emine (Central Bulgarian Black sea coast). Part I. Taxonomic and zoogeographic structure, life forms, habitat and humidity preferences

Fig. 7. Ecological groups of carabids in terms of humidity (number of species).

Fig. 5 in Ground beetles (Coleoptera: Carabidae) from the region of Cape Emine (Central Bulgarian Black sea coast). Part I. Taxonomic and zoogeographic structure, life forms, habitat and humidity preferences

Fig. 5. Proportions of the species according to their habitat preferendum.

Fig. 3 in Ground beetles (Coleoptera: Carabidae) from the region of Cape Emine (Central Bulgarian Black sea coast). Part I. Taxonomic and zoogeographic structure, life forms, habitat and humidity preferences

Fig. 3. Proportions of the carabid species by zoogeographical complexes.

Fig. 2 in Ground beetles (Coleoptera: Carabidae) from the region of Cape Emine (Central Bulgarian Black sea coast). Part I. Taxonomic and zoogeographic structure, life forms, habitat and humidity preferences

Fig. 2. Proportions of the species among the tribes.

Fig. 1 in Ground beetles (Coleoptera: Carabidae) from the region of Cape Emine (Central Bulgarian Black sea coast). Part I. Taxonomic and zoogeographic structure, life forms, habitat and humidity preferences

Fig. 1. Proportions of the species among the tribes.

opencc-by-4.0Aug 2015View details →

Fig. 2 in Ground beetles (Coleoptera: Carabidae) from the region of Cape Emine (central Bulgarian Black sea coast). Part III. Spatial distribution and gradient analysis

Fig. 2. DCA analysis of the trapdays data for all of the sampling sites.

opencc-by-4.0Aug 2015View details →

Fig. 1 in Ground beetles (Coleoptera: Carabidae) from the region of Cape Emine (central Bulgarian Black sea coast). Part III. Spatial distribution and gradient analysis

Fig. 1. PCA distribution of the sampling sites with full two-year catches.

dryad36/100

Phylogenetic endemism and ancestral area inference reveal historical refugia in the Greater Cape Floristic Region

Open the record for dataset details and reuse information.

publicDec 2025View details →

dryad36/100

Data from: Functional traits in parallel evolutionary radiations and trait-environment associations in the Cape Floristic region of South Africa

Open the record for dataset details and reuse information.

publicDec 2014View details →

dryad36/100

Leaf margins in a deciduous lineage from the Greater Cape Floristic Region track climate in unexpected directions

Open the record for dataset details and reuse information.

publicJan 2021View details →

opencc-zeroJun 2020View details →

Data from: Between an ocean and a high place: coastal drainage isolation generates endemic cryptic species in the Cape Kurper Sandelia capensis (Anabantiformes: Anabantidae), Cape Region, South Africa

This study investigated the range-wide phylogenetics and biogeography of the Cape Kurper Sandelia capensis, a primary freshwater fish endemic to, and widespread within, the Cape Floristic Region (CFR) of South Africa. Maximum likelihood, Bayesian phylogenetic, and haplotype network analyses, based on two mitochondrial and two nuclear genes, revealed the existence of three reciprocally monophyletic, deeply divergent and allopatric clades that likely represent cryptic species. The West Coast Clade is largely confined to the Langvlei, Verlorenvlei, Berg, and Diep rivers, the Klein River Clade is endemic to the Klein River, and the South Coast Clade is found everywhere else in the range of S. capensis sensu lato. It was hypothesized that divergences within S. capensis sensu lato likely occurred because of (1) isolation of coastal drainages by persistent drainage divides and/or (2) vicariance of current tributaries by the drowning of their confluences by high sea levels. The current distribution of lineages could be due to historical range expansion and gene flow via (1) river capture or some other mode of transdivide dispersal, and/or (2) dispersal during periods of low sea level via paleoriver confluences of currently isolated coastal rivers. Comparison of BEAST2 estimated divergence times with the timing of climatic, geological, and geomorphological events supported long-term coastal drainage isolation, punctuated by rare transdivide dispersal events and limited paleoriver dispersal, as the best explanation of current phylogeographic and divergence patterns in S. capensis. Hydrological barriers that block upstream passage in palaeotributaries could hypothetically explain why S. capensis failed to disperse through certain palaeoriver confluences. There were several sites where biogeographic patterns have likely been confounded by human translocation of S. capensis. Alien fish predators and water extraction may threaten the three cryptic species more severely than previously realized, due to their smaller population sizes and inhabitation of only a portion of the range previously ascribed to S. capensis sensu lato. The preponderance of cryptic diversity and endemism in the CFR suggests that additional undescribed cryptic species of obligate freshwater fishes may be found in short coastal river systems around the world, especially in regions with a history of geological stability and a narrow continental shelf.

opencc-zeroJul 2019View details →

Data from: Dissecting biodiversity in a global hotspot: uneven dynamics of immigration and diversification within the Cape Floristic Region of South Africa

Aim: Fragmented distributions should show immigration and diversification dynamics consistent with the predictions of island biogeography theory. We test whether this applies to the fragmented Cape fynbos vegetation. Location: Southern Africa, Cape Floristic Region (CFR) Taxon: Angiosperms, Restionaceae (restios) Methods: We used a large occurrence dataset and environmental layers to characterize an existing regionalization and the intervals between the regions ecologically and spatially. We extended the available phylogeny for restios and inferred their historical biogeography using models implemented in BioGeoBEARS. We then measured the relative contribution of immigration and in situ speciation to the species richness of each region within the CFR. We used standard statistical methods to test the predictions of the island biogeography theory. Results: The area and environmental heterogeneity of the seven regions of the CFR are positively correlated with in situ speciation rate. Furthermore, more isolated areas, and areas colonized more recently, have proportionally higher immigration rates, and more central and older areas proportionally higher in situ speciation rates. Main Conclusions: The variation in immigration and diversification dynamics among the regions within the CFR is extensive and consistent with the archipelago model of island biography theory. This dynamic may contribute significantly to the diversity of the Cape flora. Such a model could be generally useful for understanding the generation and maintenance of diversity in biodiversity hotspots, and may even scale up to explain continental biodiversity.

opencc-zeroDec 2017View details →

Data from: Are forest‐shrubland mosaics of the Cape Floristic Region an example of alternate stable states?

The idea of alternate stable states (ASS) has been used to explain the juxtaposition of distinct vegetation types within the same climate regime. ASS may explain the co‐existence of relatively inflammable closed‐canopy Afrotemperate Forest patches ("Forest") within fire‐prone open‐canopy Fynbos in the Cape Floristic Region (CFR) on sandstone‐derived soils. We evaluated the hypothesis that although fire and local topography and hydrology likely determined the paleogeographic boundaries of Forest, present‐day boundaries are additionally imposed by emergent edaphic properties and disturbance histories. We studied vegetation and edaphic properties of Forest‐Transition‐Fynbos vegetation at two sites within the CFR on sandstone‐derived soils and tracked historical change using aerial photography. Whereas Forest and Fynbos have changed little in extent or density since 1945, Transition vegetation increased into areas formerly occupied by Fynbos. Forest soils were ubiquitously more nutrient‐rich than Fynbos soils, with Transition soils being intermediate. These edaphic differences are not due to geological differences, but instead appear to have emerged as a consequence of different nutrient cycling within the different ecosystems. Soil nutrients are now so different that a switch from Fynbos to Forest is unlikely, in the short term (i.e. decades). Floristically and nutritionally, Transitional vegetation is more similar to Fynbos than Forest and may be less resilient to changes in exogenous drivers (e.g., fire). Our findings are consistent with the idea that geologically Forest and Fynbos are largely fire‐derived long‐term ASS, with the stability of each state reinforced by marked soil nutrient differences. In contrast, the intermediate Transitional vegetation that might switch states is unlikely to be stable.

opencc-zeroDec 2014View details →

Data from: Topography as a driver of diversification in the Cape Floristic Region of South Africa

The rugged topography of the Cape Floristic Region (CFR), South Africa, is frequently invoked to explain the spectacular radiation of the Cape flora, but the mechanisms involved remain unclear. Where recent authors emphasize the importance of elevation gradients as stimuli for ecological speciation, earlier workers stressed the role of topography as an isolating mechanism, particularly in montane lineages. Using six Cape plant lineages, we tested whether elevation niches are phylogenetically conserved. We then assessed whether high-elevation species are more consistently range-restricted than low-elevation species, and whether high-elevation sisters show stronger range exclusivity (allopatry) and weaker ecological and phenotypic differentiation, suggestive of nonecological speciation. Elevation niches tend to be phylogenetically conserved. Also, high-elevation species are more consistently range-restricted than low-elevation species, potentially explaining the generally stronger range exclusivity of high-elevation sisters. While the high-elevation zone is less homogeneous ecologically, more data are required to demonstrate that high-elevation sister species show generally weaker ecological and phenotypic differentiation. Topographic complexity promotes geographical isolation at high elevations, thereby providing opportunities for nonecological, vicariant speciation. While recognizing the need for additional data, we suggest that the upland and lowland floras of the CFR may differ with regard to predominant speciation mode.

FIGURE 3 in A new species group of the genus Trechosia from the Cape region of South Africa (Coleoptera, Carabidae, Trechinae)

FIGURE 3. Trechosia humeralis (Jeannel, 1930), holotype, female. General habitus (A), microsculpture of elytra between the anterior and posterior discal setiferous punctures (B).

FIGURE 2 in A new species group of the genus Trechosia from the Cape region of South Africa (Coleoptera, Carabidae, Trechinae)

FIGURE 2. Trechosia kogelbergensis sp.nov., holotype, male. General habitus (A), microsculpture of elytra between the anterior and posterior discal setiferous punctures (B), aedeagus lateral view (C).

FIGURE 1 in A new species group of the genus Trechosia from the Cape region of South Africa (Coleoptera, Carabidae, Trechinae)

FIGURE 1. Trechosia intermedia sp.nov., holotype, male. General habitus (A), microsculpture of elytra between the anterior and posterior discal setiferous punctures (B), mentum and ligula ventral view (C), aedeagus lateral view (D).

FIGURE 22 in Two new relict Syncordulia species found during museum and field studies of threatened dragonflies in the Cape Floristic Region (Odonata: Corduliidae)

FIGURE 22. Distribution of 'gomphomacromiine' Afrotropical Corduliidae. Nesocordulia and Syncordulia species are not indicated separately, but the number of species in each region is provided. Idomacromia species are separated (diamond: I. jillianae Dijkstra & Kisakye; inverted triangle: I. lieftincki Legrand; standing triangle: I. proavita Karsch; star: both I. lieftincki and I. proavita).

FIGURES 17–21 in Two new relict Syncordulia species found during museum and field studies of threatened dragonflies in the Cape Floristic Region (Odonata: Corduliidae)

FIGURES 17–21. Geographical distribution of Syncordulia species in South Africa (17) and the Western Cape (18–21). Legend: solid circles: verified records; dotted circles: observations; crossed circles: unverified records. (17–18) S. gracilis; (19) S. legator n. sp.; (20) S. venator; (21) S. serendipator n. sp.