Browsing Research Articles (Botany and Zoology) by Title
Now showing items 184-203 of 339
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Invasion science for society : a decade of contributions from the Centre for Invasion Biology
(Academy of Science of South Africa, 2014)Biological invasions are a growing problem worldwide. In 2004, the South African Department of Science and Technology, through the National Research Foundation, established a Centre of Excellence for Invasion Biology, ... -
Invasive amphibians in southern Africa : a review of invasion pathways
(AOSIS Publishing, 2017)Background: Globally, invasive amphibians are known for their environmental and social impacts that range from poisoning of local fauna and human populations to direct predation on other amphibians. Although several ... -
Invasive frogs in Sao Paulo display a substantial invasion lag
(European Geosciences Union, 2018)ENGLISH ABSTRACT: The first report of the invasion of the Robber frog Eleutherodactylus johnstonei Barbour, 1914 in the municipality of São Paulo was made in 2014. However, we report here that sound records of this species ... -
Invasive potential and management of naturalised ornamentals across an urban environmental gradient with a focus on Centranthus ruber
(AOSIS, 2018-08-16)Background: Predicting which alien species may become invasive is important in prioritising scarce resources for management. Objectives: Sixteen naturalised ornamentals in Cape Town were assessed for invasion potential ... -
Investigating onychophoran gas exchange and water balance as a means to inform current controversies in arthropod physiology
(The Company of Biologists, 2008-08)Several controversies currently dominate the fields of arthropod metabolic rate, gas exchange and water balance, including the extent to which modulation of gas exchange reduces water loss, the origins of discontinuous gas ... -
John Dawson Skinner : mammalogist (1932–2011)
(Academy of Science of South Africa, 2012-02)When John Skinner passed away last year just short of his 79th birthday, he left behind a great many saddened but grateful friends, colleagues and students whom he had helped advance in their careers; collaborators on a ... -
Jurassic bipeds that could hop? perch? pounce? fly?
(Academy of Science for South Africa, 2001)The description of the ichnogenus Molapopentapodiscus (Ellenberger, 1970) includes the presumption that forward progression was by bounding with feet together. That this genus, and other genera based on footprints or ... -
Kadmium in Valsbaai : moniteringspotensiaal van die mariene slak, Oxystele tigrina (Mollusca)
(AOSIS, 2009-06)’n Opname is onderneem van die kadmiumvlakke in die tussengetygebied van Valsbaai, Suid- Afrika. Kadmiumkonsentrasies is seisoenaal bepaal in die water en sediment in verskillende lokaliteite. Die metings is oor ’n periode ... -
Kan die gevoeligheid van grondlewende organismes bydra om die volhoubaarheid van landbewerking van olieraffinadery afval te beoordeel?
(AOSIS Publishing, 2015)Voordelige grondlewende organismes lewer ekostelseldienste in gesonde grondtipes. Olieraffinaderye genereer groot hoeveelhede soliede afval wat verskeie tipes koolwaterstowwe en metale bevat wat in die grond geploeg word ... -
Knoxdaviesia proteae is not the only Knoxdaviesia-symbiont of Protea repens
(International Mycological Association, 2015-11-10)Two polyphyletic genera of ophiostomatoid fungi are symbionts of Proteaceae in southern Africa. One of these, Knoxdaviesia, includes two closely related species, K. proteae and K. capensis, that have overlapping geographical ... -
Koedoe : African Protected Area Conservation and Science - a retrospection : 1958 to 2018
(AOSIS, 2019-04-08)In 2018, Koedoe celebrated an unbroken publication record of 60 years. From uncertain beginnings in 1958, it is now a mature and important internationally recognised scientific journal focussing on conservation and science ... -
Die konsep van biobeskikbaarheid en die neerlê van eenvormige standaarde vir toelaatbare chemiese kontaminante in die grond
(AOSIS OpenJournal, 2006)Soils are very heterogeneous substrates providing an environmental matrix with varying spatial and temporal gradients of pH, organic carbon, particle size distribution, moisture content as well as biological factors ... -
Kwaliteit van water wat aan wild in die Kalahari-gemsbok Nasionale Park voorsien word
(AOSIS, 1989)The quality of the water originating from boreholes in the Kalahari Gemsbok National Park (KGNP) varies from fresh (<5 ppm TDS), to mineralised (5-10 ppm TDS), to highly mineralised (>10 ppm TDS). Only 35 percent of the ... -
Laboratory X-ray micro-computed tomography : a user guideline for biological samples
(Oxford University Press, 2015)Laboratory X-ray micro-computed tomography (micro-CT) is a fast growing method in scientific research applications that allows for non-destructive imaging of morphological structures. This paper provides an easily operated ... -
Lake Tanganyika - a melting pot of ancient and young cichlid lineages (teleostei: cichlidae)?
(Public Library of Science, 2015)A long history of research focused on the East Africa cichlid radiations (EAR) revealed discrepancies between mtDNA and nuclear phylogenies, suggesting that interspecific hybridisation may have been significant during the ... -
Ledebouria caesiomontana A.J.Hankey & N.Hahn (Hyacinthaceae: Hyacinthoideae) : a new species from the Blouberg centre of endemism, Limpopo, South Africa
(AOSIS Publishing, 2014)Background: Ledebouria Roth (Hyacinthaceae: Hyacinthoideae) is a largely African genus with, more or less, 40 species occurring in South Africa. The species was first collected in December 1990 by R. Archer [Archer, R.H. ... -
Life cycle of Renylaima capensis, a brachylaimid trematode of shrews and slugs in South Africa : two-host and three-host transmission modalities suggested by epizootiology and DNA sequencing
(BioMed Central, 2012-08)Abstract Background The life cycle of the brachylaimid trematode species Renylaima capensis, infecting the urinary system of the shrew Myosorex varius (Mammalia: Soricidae: Crocidosoricinae) in the Hottentots Holland Nature ... -
Life-history traits evolved jointly with climatic niche and disturbance regime in the genus leucadendron (proteaceae)
(University of Chicago Press, 2017-12-05)ENGLISH ABSTRACT: Organisms have evolved a diversity of life-history strategies to cope with variation in their environment. Persistence as adults and/or seeds across recruitment events allows species to dampen the effects ... -
Limited genomic consequences of hybridization between two African clawed frogs, Xenopus gilli and X. laevis (Anura: Pipidae)
(Nature Research, 2017-04-24)The Cape platanna, Xenopus gilli, an endangered frog, hybridizes with the African clawed frog, X. laevis, in South Africa. Estimates of the extent of gene flow between these species range from pervasive to rare. Efforts ... -
Lizard epidermal gland secretions I : chemical characterization of the femoral gland secretion of the sungazer, Cordylus giganteus
(Springer Verlag, 2007-09)The giant girdled lizard or sungazer, Cordylus giganteus, is endemic to South Africa. It has been suggested that in this species, as in other lizard species, epidermal glands in the femoral, pre-cloacal regions, and cloacal ...
