Browsing Research Articles (Botany and Zoology) by Title
Now showing items 224-243 of 339
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New and interesting orchid records for Tanzania
(BioOne, 2004-01)The orchid taxa Brachycorythis ovata subsp. schweinfurthii, Habenaria arianae and Habenaria disparilis are newly recorded for Tanzania, while Brachycorythis congoensis is newly recorded for the floral region T7. A stable, ... -
A new leafminer on grapevine and Rhoicissus (Vitaceae) in South Africa within an expanded generic concept of Holocacista (Insecta, Lepidoptera, Heliozelidae)
(Pensoft, 2015-06)A grapevine leafminer found recently in table grape orchards and vineyards in the Paarl region (Western Cape, South Africa) is described as Holocacista capensis sp. n. It has also been found on native Rhoicissus digitata ... -
A new national unit for invasive species detection, assessment and eradication planning
(Academy of Science of South Africa, 2013)Even with no new introductions, the number of biological invasions in South Africa will increase as introduced species naturalise and become invasive. As of 2010 South Africa had ~8750 introduced plant taxa, 660 recorded ... -
A new species and first record of the genus Triacanthella Schaffer, 1897 (Collembola, Poduromorpha, Hypogastruridae) for Africa
(Pensoft, 2012)The first species of the genus Triacanthella to be recorded from Africa is described. Triacanthella madiba sp. n. belongs to the Southern Hemisphere group of the genus. It is morphologically closely related to T. vogeli ... -
A new species of Potamonautes from Sao Tome Island, Central Africa, with redescriptions of P. margaritarius (A. Milne-Edwards, 1869) from Sao Tome, and P. principe Cumberlidge, Clark and Baillie, 2002, from Principe (Decapoda: Potamonautidae)
(Brill, 2018)Surveys of the freshwater crabs of two islands in the Gulf of Guinea, Central Africa, allowed a revision of the taxonomy of two little-known island endemic species, based for the first time on adult males: Potamonautes ... -
A new species of trogloplacine crab of the genus Australocarcinus Davie, 1988 from a freshwater stream in Mahé, Seychelles (Crustacea, Brachyura, Chasmocarcinidae)
(Pensoft, 2018-02-19)A new species of freshwater chasmocarcinid crab, Australocarcinus insperatus sp. n., is described from the Seychelles Islands in the Indian Ocean. This is the first record of the genus and the subfamily Trogloplacinae ... -
New to science and already disillusioned
(Academy of Science for South Africa, 2009)Sir—Last year I attended a meeting where several representatives from the NRF told researchers at Stellenbosch University that all rated researchers would automatically receive ‘glue’ funding in 2009. I was very pleased ... -
Nitrogen-fixing bacteria and Oxalis – evidence for a vertically inherited bacterial symbiosis
(BMC (part of Springer Nature), 2019-10-23)Background: Plant-endophyte symbioses often revolve around nitrogen metabolism, and involve varying degrees of intimacy. Although evidence for vertical inheritance of nitrogen-fixing endophytic bacteria is increasing, it ... -
No saturation in the accumulation of alien species worldwide
(Nature Research (part of Springer Nature), 2017)Although research on human-mediated exchanges of species has substantially intensified during the last centuries, we know surprisingly little about temporal dynamics of alien species accumulations across regions and taxa. ... -
Nomenclatural notes on southern African Oxalis species
(AOSIS, 2018)Background: The correct author citation of Oxalis sonderiana (Kuntze) J.F.Macbr. and the validity and identity of the species Oxalis beneprotecta R.Knuth, Oxalis bullulata T.M.Salter and Oxalis pulchella Jacq. var. ... -
Non-indigenous ungulates as a threat to biodiversity
(Wiley-Blackwell, 2009-07)Non-indigenous ungulate species pose a problem for conservation. They can be socially and economically valuable, but are also potentially harmful to biodiversity. Therefore, their introduction requires an explicit assessment ... -
Ontogenetic shifts in plant interactions vary with environmental severity and affect population structure
(Wiley Online Library, 2013)Environmental conditions and plant size may both alter the outcome of inter‐specific plant–plant interactions, with seedlings generally facilitated more strongly than larger individuals in stressful habitats. However, the ... -
Open minded and open access : introducing NeoBiota, a new peer-reviewed journal of biological invasions
(Pensoft, 2011)The Editorial presents the focus, scope, policies, and the inaugural issue of NeoBiota, a new open access peer-reviewed journal of biological invasions. The new journal NeoBiota is a continuation of the former NEOBIOTA ... -
An optimization approach to the two-circle method of estimating ground-dwelling arthropod densities
(Florida Entomological Society, 2014-06)Information on ground-dwelling arthropod densities is important for efficient management in agro-ecosystems. A method of using paired pitfall traps with different inter-trap distances, called the two-circle method (TCM), ... -
Ou en nuwe tendense in die ekotoksikologie : die relevansie van stresekologie en ekotoksikogenomika
(AOSIS OpenJournal, 2005)Die relatief jong wetenskapsgebied van die ekotoksikologie het in die afgelope dekade heelwat veranderinge ondergaan – vanaf ’n meer praktykgerigte, toetsgesentreerde vakgebied, na ’n basiese navorsingsveld waarin meer ... -
Overland movement in African clawed frogs ( Xenopus laevis ) : a systematic review
(PeerJ, 2016)African clawed frogs (Xenopus laevis) are often referred to as ‘purely aquatic’ but there are many publications which suggest extensive overland movements. Previous reviews which considered the topic have not answered the ... -
Oviparous elasmobranch development inside the egg case in 7 key stages
(Public Library of Science, 2018-11-06)Embryological stages of oviparous elasmobranch during development can be difficult to identify, requiring magnification and/or fixation of an anaesthetized embryo. These restrictions are poorly suited for monitoring the ... -
Oxalis seeds from the Cape Flora have a spectrum of germination strategies
(Botanical Society of America, 2019)PREMISE OF THE STUDY: Seed germination strategy has profound ecological and evolutionary consequences, with transitions between germination strategies receiving renewed recent attention. Oxalis from the Cape Flora, South ... -
Panmixia defines the genetic diversity of a unique arthropod-dispersed fungus specific to Protea flowers
(Wiley Open Access, 2014-09)Knoxdaviesia proteae, a fungus specific to the floral structures of the iconic Cape Floral Kingdom plant, Protea repens, is dispersed by mites phoretic on beetles that pollinate these flowers. Although the vectors of K. ... -
Pathways and gateways of freshwater invasions in Europe
(Regional Euro-Asian Biological Invasions Centre, 2015)Taking into account the continuous increase in freshwater introductions, and to support the recent European legislation on invasive alien species, the identification of priority pathways and gateways of introductions is ...
