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Diversity and distribution of turnip yellows virus infecting Brassica napus L. (canola) in the Western Cape, South AfricaNARA Subscribed
Turnip yellows virus (TuYV), (genus: Polerovirus ), poses a significant threat to brassicaceous crops, particularly Brassica napus L. (canola). In Australia and the United Kingdom, TuYV has caused substantial grain yield reductions of up to 50%. This study documents the first extensive survey of TuYV on canola in South Africa, specifically in the Swartland and Overberg regions of the Western Cape. Using RNAseq-derived metaviro...
A Comparison of Diving Behavior of Goose‐Beaked and Dense‐Beaked Whales From Tagging Studies in Multiple Ocean BasinsNARA Subscribed
Studies of cetacean diving behavior in multiple locations in different ocean basins allow for an assessment of variability within and among populations. We examine foraging dive behaviors of goose‐beaked whales ( Ziphius cavirostris ) and dense‐beaked whales ( Mesoplodon densirostris ) using data from 132 tagged whales in seven locations in the Pacific and Atlantic Oceans and the Mediterranean Sea. Acoustic recording tags are...
Site‐Specific Nutrient Data Reveal the Importance of Soils in Driving the Mycorrhizal Make‐Up of Woody Vegetation WorldwideNARA Subscribed
Aim Arbuscular mycorrhizas (AM) and ectomycorrhizas (ECM) have different impacts on nutrient cycling, carbon storage, community dynamics and enhancement of photosynthesis by rising CO 2 . Recent global analyses have concluded that patterns of AM/ECM dominance in forests worldwide are shaped by climate, with soil nutrients contributing negligible additional explanatory power. However, their reliance on nutrient data from GIS su...
Identification and characterization of mycoviruses in transcriptomes from the fungal family ceratocystidaceaeNARA Subscribed
Mycoviruses pervade the fungal kingdom, yet their diversity within various fungal families and genera remains largely unexplored. In this study, 10 publicly available fungal transcriptomes from Ceratocystidaceae were analyzed for the presence of mycoviruses. Despite mycovirus associations being known in only four members of this family, our investigation unveiled the discovery of six novel mycoviruses. The majority of these my...
Genomic characterization of novel viruses associated with Olea europaea L. in South AfricaNARA Subscribed
South Africa has a small but growing olive industry. Until now, no virological research has been carried out on this crop locally. Seventeen samples were collected from various olive cultivars from a single producer in the Stellenbosch growing area of South Africa. RNAseq was performed on total RNA, and the compositions of the metaviromes were determined. Olive leaf yellowing-associated virus was detected for the first time in...
Characterization of macadamia ringspot-associated virus, a novel Orthotospovirus associated with Macadamia integrifolia in South AfricaNARA Subscribed
South Africa is the largest producer of macadamias in the world, producing an estimated 61,288 tons nut-in-shell in 2022. In order to ensure the sustainability of the industry, it is important that research focuses on the control and eradication of economically important pests and diseases. Macadamia trees in the Mpumalanga Lowveld of South Africa have for some time shown severe chlorosis, which coincides with a significant dr...
Predicting river phytoplankton blooms and community succession using ecological niche modelingNARA Subscribed
Excessive phytoplankton concentrations in rivers can result in the loss of plant and invertebrate communities, and threaten drinking water supplies. Whilst the physicochemical controls on algal blooms have been identified previously, how these factors combine to control the initiation, size, and cessation of blooms in rivers is not well understood. We applied flow cytometry to quantify diatom, chlorophyte, and cyanobacterial g...
Introducing Elinor for monitoring the governance and management of area‐based conservationNARA Subscribed
Monitoring the governance and management effectiveness of area‐based conservation has long been recognized as an important foundation for achieving national and global biodiversity goals and enabling adaptive management. However, there are still many barriers that prevent conservation actors, including those affected by governance and management systems from implementing conservation activities and programs and from gathering...
A surplus no more? Variation in krill availability impacts reproductive rates of Antarctic baleen whalesNARA Subscribed
The krill surplus hypothesis of unlimited prey resources available for Antarctic predators due to commercial whaling in the 20th century has remained largely untested since the 1970s. Rapid warming of the Western Antarctic Peninsula (WAP) over the past 50 years has resulted in decreased seasonal ice cover and a reduction of krill. The latter is being exacerbated by a commercial krill fishery in the region. Despite this, humpba...
Seasonal gain in body condition of foraging humpback whales along the Western Antarctic PeninsulaOA Marine
Most baleen whales are capital breeders that use stored energy acquired on foraging grounds to finance the costs of migration and reproduction on breeding grounds. Body condition reflects past foraging success and can act as a proxy for individual fitness. Hence, monitoring the seasonal gain in body condition of baleen whales while on the foraging grounds can inform how marine mammals support the costs of migration, growth, an...