Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
11,983
datasets available to search
ShareScore release 0.9.0
Dataset results
11,983 results for “africa”
Genetic restoration of black rhinoceroses in South Africa: conservation implications
<p>Globally, wildlife populations are becoming increasingly small and isolated. Both processes contribute to an elevated risk of extinction, notably due to genetic factors related to inbreeding depression and a loss of adaptive potential. Wildlife translocation is a valuable conservation tool to reintroduce species to previously occupied areas, or augment existing populations with genetically divergent animals, thereby improving the viability of endangered populations. However, understanding the genetic implications of mixing gene pools is key to avoid the risk of outbreeding depression, and to maximise translocation effectiveness. In this study we used mitochondrial and microsatellite DNA collected from 110 black rhinoceroses (Diceros bicornis minor) in Kruger National Park, South Africa, to determine levels of genetic diversity, inbreeding and relatedness. We compared this diversity with the two source populations (KwaZulu-Natal, South Africa and Zambezi River, Zimbabwe) using data from previously published studies, and assessed changes in the relative contribution of source lineages since their reintroduction in the 1970s. Our results show that Kruger's black rhinoceroses are genetically more diverse than those from KwaZulu-Natal, with levels closer to those from the Zambezi Valley. Furthermore, our findings indicate a relative increase in the Zimbabwean lineage since reintroduction, suggesting a possible selective advantage. From a conservation perspective, our results demonstrate the benefits of mixing multiple source populations to restore gene flow, improve genetic diversity and thereby help protect small, isolated populations from extinction.</p>
Global Mangrove Watch: Monthly Alerts of Mangrove Loss for Africa 2019--2022
<p>This results from a prototype change alert system (Bunting et al., 2023) that has been developed to identify mangrove losses on a monthly basis. Implemented on the Microsoft Planetary Computer, the Global Mangrove Watch v3.0 mangrove baseline extent map (<a href="https://doi.org/10.3390/rs14153657">Bunting et al., 2022</a>) for 2018 was refined and used to define the mangrove extent mask under which potential losses would be identified. The study period was 2018-2022 due to the availability of the Copernicus Sentinel-2 imagery used for the study. The alert system is based on optimised NDVI thresholds used to identify mangrove losses and a temporal scoring system used to filter false positives. The alert system was found to have an estimated overall accuracy of 92.1 %, with the alert commission and omission estimated to be 10.4 % and 20.6 %, respectively. The alert system is presently limited to Africa, where significant losses were identified in the study period, with 90 % of the loss alerts identified in Nigeria, Guinea-Bissau, Madagascar, Mozambique and Guinea. The drivers of those losses vary, with West Africa primarily driven by economic activities such as agricultural conversion and infrastructure development. At the same time, East Africa is dominated by climatic drivers, primarily storm frequency and intensity. Production of the monthly loss alerts for Africa will be continued as part of the wider Global Mangrove Watch project, and the spatial coverage is expected to be expanded over the coming months and years. Future updates of the mangrove loss alerts will be via the Global Mangrove Watch portal: <a href="https://www.globalmangrovewatch.org">https://www.globalmangrovewatch.org</a></p>
Fig. 8 in Two Asian freshwater snails newly introduced into South Africa and an analysis of alien species reported to date
Fig. 8. Shell of Biomphalaria glabrata collected in Durban in the 1980s (photos: C. Appleton).
Fig. 5 in Two Asian freshwater snails newly introduced into South Africa and an analysis of alien species reported to date
Fig. 5. Shell of G. chinensis from Amatikulu (photo: N. Miranda). Scale bar = 1 mm.
Fig. 1 in Two Asian freshwater snails newly introduced into South Africa and an analysis of alien species reported to date
Fig. 1. Radix rubiginosa from Amatikulu (photos: H. Madsen).
Fig. 2 in Two Asian freshwater snails newly introduced into South Africa and an analysis of alien species reported to date
Fig. 2. Shells of Radix rubiginosa from Amatikulu (photos: N. Miranda). Scale bars = 5 mm.
Fig. 1 in New species of Gymnochiromyia Hendel, 1933 (Diptera: Schizophora: Chyromyidae) from Southern Africa
Fig. 1. Gymnochiromyia maculiventris sp. n., wing. Scale bar = 1 mm.
Figs 5, 6 in New species of plume moths of the genus Agdistis Hübner, 1825 (Lepidoptera: Pterophoridae: Agdistinae) from southern Africa. 6
Figs 5, 6. Agdistis buffelsi sp. n., holotype: (5) adult; (6) male genitalia, BMNH 22732.
Figs 3, 4 in New species of plume moths of the genus Agdistis Hübner, 1825 (Lepidoptera: Pterophoridae: Agdistinae) from southern Africa. 6
Figs 3, 4. Agdistis vansoni sp. n., holotype: (3) adult; (4) male genitalia, BMNH 22728.
Fig. 2 in Predicting the geographic distribution of Lucilia sericata and Lucilia cuprina (Diptera: Calliphoridae) in South Africa
Fig. 2. Modified Red-top™ fly trap used in surveys.
Figs 1, 2 in A remarkable new genus of robber flies, Akatiomyia gen. n., from the Western Cape Province of South Africa, and a new key to the genera of Afrotropical Stenopogoninae (Diptera: Asilidae)
Figs 1, 2. Akatiomyia eremnos gen. et sp. n., male: (1) entire holotype, (2) left wing of paratype.
Fig. 4 in Predicting the geographic distribution of Lucilia sericata and Lucilia cuprina (Diptera: Calliphoridae) in South Africa
Fig. 4. Distribution of human population in South Africa in 2011 in terms of density.
Figs 1, 2 in New species of plume moths of the genus Agdistis Hübner, 1825 (Lepidoptera: Pterophoridae: Agdistinae) from southern Africa. 6
Figs 1, 2. Agdistis iversoni sp. n., holotype: (1) adult; (2) male genitalia, TMSA 15264.
Fig. 71 in Three new genera of tracheline sac spiders from southern Africa (Araneae: Corinnidae)
Fig. 71. Distribution of Fuchibotulus gen. n. species.
Fig. 100 in Three new genera of tracheline sac spiders from southern Africa (Araneae: Corinnidae)
Fig. 100. Distribution of Poachelas gen. n. species.
Fig. 40 in Three new genera of tracheline sac spiders from southern Africa (Araneae: Corinnidae)
Fig. 40. Distribution of Fuchiba aquilonia sp. n., F. capensis sp. n. and F. montana sp. n.
Fig. 3 in A new genus and species of marine fish leech (Annelida: Hirudinea: Piscicolidae) from South Africa
Fig. 3. Male gonopores, transverse section in clitellum region. Abbreviation: Mp – male gonopore.
Fig. 5 in Revision of the bees of the Colletes fasciatus-group in southern Africa (Hymenoptera: Colletidae)
Fig. 5. Colletes cyanonitidus sp. n., propodeum of female, dorsal view.
Fig. 19 in Spinotrachelas, a new genus of tracheline sac spiders from South Africa (Araneae: Corinnidae)
Fig. 19. Distribution of Spinotrachelas capensis sp. n.
Fig. 1 in Spinotrachelas, a new genus of tracheline sac spiders from South Africa (Araneae: Corinnidae)
Fig. 1. General habitus of male Spinotrachelas capensis sp. n. Scale bar = 1 mm.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.