Browsing Research Articles (Botany and Zoology) by Title
Now showing items 157-176 of 297
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Integrative invasion science : model systems, multi-site studies, focused meta-analysis and invasion syndromes
(Wiley Online Library, 2013)Invasion science is a very active subdiscipline of ecology. However, some scientists contend that theoretical integration has been limited and that predictive power remains weak. This paper, focusing on plants, proposes ... -
Inter-island dispersal of flightless Bothrometopus huntleyi (Coleoptera: Curculionidae) from the sub-Antarctic Prince Edward Island archipelago
(Cambridge University Press, 2011)Bothrometopus huntleyi is a flightless weevil endemic to the volcanically-formed sub-Antarctic Prince Edward Islands archipelago that arose approximately 0.5 million years ago (m.y.a.). Since emergence, a series of volcanic ... -
Intraspecific body size frequency distributions of insects
(Public Library of Science -- PLoS, 2011-03)Although interspecific body size frequency distributions are well documented for many taxa, including the insects, intraspecific body size frequency distributions (IaBSFDs) are more poorly known, and their variation among ... -
Introduction to the special issue : tree invasions : towards a better understanding of their complex evolutionary dynamics
(Oxford University Press on behalf of the Annals of Botany Company, 2017)Many invasive plants show evidence of trait-based evolutionary change, but these remain largely unexplored for invasive trees. The increasing number of invasive trees and their tremendous impacts worldwide, however, ... -
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 ... -
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 ... -
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 ...
