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1,558 results for “southern Africa”
Figs 1 -2 in Afrotropical Asilidae (Diptera) 2.* The genus Philodicus Loew, 1848, in southern Africa
Figs 1 -2. Phi/odieus tenuipes. I. Lateral aspect of a male specimen. 2. Right wing showing characteristic position of crossvein between R. and Rs possessed by all species of Phi/odieus.
Figs 6-22. Stenogephyra gen. n. 6-21. S in Notes on the Phycini of southern Africa with the description of a new genus and two new species (Diptera: Therevidae: Phycinae)
Figs 6-22. Stenogephyra gen. n. 6-21. S. torrida sp. n. 6. 7. Male head in frontal view. B. Male antenna. 9. Female antenna. 1O-1B. Male terminaha. 10. Male genitalia in lateral view. 11. Epandrium and cerci in dorsal view. 12. Epandrium, cerci and ventral epandrial sclerite in ventral view. 13. Gonocoxites with gonostyli in ventral view. 14. Left gonocoxite with ~onostylus and aedeagal complex in dorsal view. 15. Right gonocoxite with gonostylus in mterior view. 16. Aedeagus in lateral view. 17. Sternite B. lB. Tergite B. 19-21. Female terminalia. 19. Sternite B. 20. Subgenital plate and vaginal apodeme. 21. Tergite B, tergite 10 and cerci in dorsal view. 22. S. minuta sp. n., male antenna. Scale: 1 mm for 6 and 7,0,5 mm for the rest.
Figs 1 -5 in Notes on the Phycini of southern Africa with the description of a new genus and two new species (Diptera: Therevidae: Phycinae)
Figs 1 -5. Antennae of Phycus species of southern Africa. 1. kroeberi (Brauns). 2. niger (Krober). 3. mirabilis Lyneborg. 4. flavus Lyneborg. 5. fulvus Lyneborg. Scale: 0,5 mm.
Variation in herbivore space use: comparing two savanna ecosystems with different anthrax outbreak patterns in southern Africa
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The name of the game: Palaeoproteomics and radiocarbon dates further refine the presence and dispersal of caprines in Eastern and Southern Africa
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Data from: The distribution and numbers of cheetah (Acinonyx jubatus) in southern Africa
Assessing the numbers and distribution of threatened species is a central challenge in conservation, often made difficult because the species of concern are rare and elusive. For some predators, this may be compounded by their being sparsely distributed over large areas. Such is the case with the cheetah Acinonyx jubatus. The IUCN Red List process solicits comments, is democratic, transparent, widely-used, and has recently assessed the species. Here, we present additional methods to that process and provide quantitative approaches that may afford greater detail and a benchmark against which to compare future assessments. The cheetah poses challenges, but also affords unique opportunities. It is photogenic, allowing the compilation of thousands of crowd-sourced data. It is also persecuted for killing livestock, enabling estimation of local population densities from the numbers persecuted. Documented instances of persecution in areas with known human and livestock density mean that these data can provide an estimate of where the species may or may not occur in areas without observational data. Compilations of extensive telemetry data coupled with nearly 20,000 additional observations from 39 sources show that free-ranging cheetahs were present across approximately 789,700 km2 of Namibia, Botswana, South Africa, and Zimbabwe (56%, 22%, 12% and 10% respectively) from 2010 to 2016, with an estimated adult population of 3,577 animals. We identified a further 742,800 km2 of potential cheetah habitat within the study region with low human and livestock densities, where another ∼3,250 cheetahs may occur. Unlike many previous estimates, we make the data available and provide explicit information on exactly where cheetahs occur, or are unlikely to occur. We stress the value of gathering data from public sources though these data were mostly from well-visited protected areas. There is a contiguous, transboundary population of cheetah in southern Africa, known to be the largest in the world. We suggest that this population is more threatened than believed due to the concentration of about 55% of free-ranging individuals in two ecoregions. This area overlaps with commercial farmland with high persecution risk; adult cheetahs were removed at the rate of 0.3 individuals per 100 km2 per year. Our population estimate for confirmed cheetah presence areas is 11% lower than the IUCN's current assessment for the same region, lending additional support to the recent call for the up-listing of this species from vulnerable to endangered status.
Model inputs and results from FastScape landscape evolution model runs for southern Africa
<p>These are the input files and results for the models presented in the revised version of the paper "Constraining plateau uplift in southern Africa by combining thermochronology, sediment flux, topography, and landscape evolution modeling" submitted to JGR:Solid Earth in October 2020 and revised in May 2017. The corresponding code needed to run the inputs can be found here: http://doi.org/10.5281/zenodo.4150333. The readme.txt file contained here explains the included data and results, as well as simple instructions for how to run the models.</p>
Invasion risk of the currently cultivated alien flora in Southern Africa is predicted to decline under climate change
<p>Alien species can have massive impacts on native biodiversity, ecosystem functioning, and human livelihoods. Assessing which species from currently cultivated alien floras may escape into the wild and naturalize is essential for efficient and proactive ecosystem management and biodiversity conservation. Climate change has already promoted the naturalization of many alien plants in temperate regions, but whether it is similar in (sub)tropical areas is insufficiently known. In this study, we used species distribution models for 1,527 cultivated alien plants to evaluate current and future invasion risks across different biomes and 10 countries in southern Africa. Our results confirm that the area of suitable climate is a strong predictor of naturalization success among the cultivated alien flora. In contrast to previous findings from temperate regions, however, climatic suitability is generally predicted to decrease for potential aliens across our (sub)tropical study region. While increasingly hotter and drier conditions are likely to drive declines in suitability for potential aliens across most biomes of southern Africa, in some the number of potential invaders is predicted to increase under moderate climate change scenarios (e.g., in dry broadleaf forests and flooded grasslands). We found that climatic suitability is expected to decline less for aliens originating from continents with the tropical biome or from the Southern Hemisphere. In addition, we found that the climatically suitable area will decline less for aliens that have already naturalized in the region. While the number of potential invaders may decrease across southern Africa under future climate change, our results suggest that already naturalized aliens will continue to threaten native species and ecosystems.</p>
Satellite telemetry data for Egyptian Geese in southern Africa
<p>This archive contains all currently available satellite GPS telemetry data for Egyptian Geese in southern Africa over the period from 2008 to 2016. The data were collected with two primary aims: (1) to understand the movement ecology of this species; (2) to better evaluate the potential role of Egyptian Geese in spreading avian influenza in southern Africa. Data colelction was undertaken in several phases. The first phase focused on just three sites (Manyame, Barberspan, Strandfontein) and occurred at the same time as a series of extensive bird counts and captures. Birds captured during this period were tested for avian influenza. We also undertook an extensive colour-ringing exercise on Egyptian Geese during the first phase. The second phase of the program involved extending our activities to some new locations (Voelvlei, Jozini) to test specific hypotheses about movement and the timing of moult, and to improve the generality of our findings. The third phase involved a translocation experiment in which six birds were moved from Barberspan to Strandfontein. The data have been analysed and published in a number of different venues and publications, as listed in the associated metadata.</p>
Fig. 1 in Avian Diversity Along A Precipitation Gradient In Southern Africa
Fig. 1. Location of the transect (broken red line in the map above, yellow line in the map below).
Climate change threatens the distribution of major woody species and ecosystem services provision in southern Africa
<p>Species occurrence points used in this study to investigate the effect of climate change on the distribution of eight tree species in 18 countries in southern Africa, covering 36% of the continent. We proposed a loser/winner ranking of the species based on the changes in climatic suitability within their historical distributions as well as future gains and losses of suitable areas. We interpreted these findings in terms of changes in the provision of key ES (timber, food, energy, and medicine), and identified hotspots of ES provision decline. We used species presence data from the Global Biodiversity Information Facility, climatic data from the AfriClim dataset, and the MaXent algorithm to project the changes in species' land suitability. </p>
FIGURE 4 in Southern Africa's Great Escarpment as an amphitheater of climate-driven diversification and a buffer against future climate change in bats
FIGURE 4 (Continued)
FIGURE 2 in Southern Africa's Great Escarpment as an amphitheater of climate-driven diversification and a buffer against future climate change in bats
FIGURE 2 (Continued)
Figure 3 in First record of the North African Launaea arborescens in southern Africa
Figure 3. Launaea arborescens in the Kuiseb Delta near Walvis Bay. Photograph: A. Burke.
Mapping the potential habitat suitability, and opportunities of bush encroacher species in Southern Africa: a case study of the SteamBioAfrica project.
<p>Senegalia mellifera (Benth) Seigler & Ebinger. , Dichrostachys cinerea (L.) Wight & Arn. and Terminalia sericea Burch. Ex DC., are three important bush encroacher species that contribute to the well-known ecological process named "thicketization" in Southern Africa. This issue has persisted for many years, impacting species distribution, plant communities, soil, and fauna dynamics. According to climate change projections, Southern Africa is expected to become drier and warmer in future scenarios, creating favourable conditions for proliferation of bush encroacher species.</p> <p>In the paper, we analyze the habitat suitability of these bush encroachers through MaxEnt 3.4.4 under three different future climate models and scenarios. Future projections were made using the shared socio-economic pathways (SSPs) for greenhouse gas concentrations, specifically SSP245-585 across two-time horizons: 2041-2060 and 2061-2180. We utilized <a href="https://www.worldclim.org/data/cmip6/cmip6climate.html">WorldClim 1-km resolution climate data</a> from three global Earth System Models (ESMs) from the sixth phase of the Coupled Model Intercomparison Project (CMIP6) that obtained better results than CMIP5 models (Bouramdane 2022; Mmame and Ngongondo 2024): the Max Planck Institute for Meteorology Earth System Model (MPI-ESM1.2-HR), the Hadley Climate Center Earth System Model (UK-ESM1.0-LL) and the Institute Model for Numerical Mathematics (INM-CM5-0). </p>
Figure 29 in Water mites of the family Hygrobatidae Koch from southern Africa (Acari: Hydrachnidia)
Figure 29. Hygrobates inflatipes sp. nov., holotype male, I-leg-5–6. Scale bar: 50 mm.
Figure 24 in Water mites of the family Hygrobatidae Koch from southern Africa (Acari: Hydrachnidia)
Figure 24. Hygrobates spathuliferus cederberg, holotype male, I-leg-5–6. Scale bar: 50 mm.
Figure 23 in Water mites of the family Hygrobatidae Koch from southern Africa (Acari: Hydrachnidia)
Figure 23. Hygrobates spathuliferus cederberg, holotype male, ventral view. Scale bar: 50 mm.
Figure 21. Hygrobates sigthori K in Water mites of the family Hygrobatidae Koch from southern Africa (Acari: Hydrachnidia)
Figure 21. Hygrobates sigthori K. Viets, genital field female (slide 2077, SMF). Scale bar: 50 mm.
Figure 34. Hygrobates loricatus K. O in Water mites of the family Hygrobatidae Koch from southern Africa (Acari: Hydrachnidia)
Figure 34. Hygrobates loricatus K. O. Viets, holotype male, I-leg-5–6. Scale bar: 50 mm.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.