Browsing Department of Botany and Zoology by Title
Now showing items 1-20 of 826
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The ability of terrestrial Oligochaeta to survive in ultramafic soils and the assessment of toxicity at different levels of organisation
(Stellenbosch : University of Stellenbosch, 2006-12)Metals are natural elements of the earth crust usually present at low concentrations in all soils. Although many metals such as cobalt, copper, iron and zinc are essential to living organisms, at elevated concentrations ... -
The abundance and diversity of meso- and macrofauna in vineyard soils under different management practices
(Stellenbosch : Stellenbosch University, 2005-03)ENGLISH ABSTRACT: The agricultural sector in South Africa relies heavily on the use of pesticides to protect crops against pest organisms. Pesticides can affect non-target organisms such as the meso- and macrofauna in ... -
ABUNDANCE IS RELATED TO SURFACE AREA AND SURFACE-AREA-TO-VOLUME RATIOS IN CENTROBOLUS COOK, 1897
(UIJIR, 2022-10)I tested for relationships between male and female surface-area-to-volume ratios and abundance in red millipedes Centrobolus. Female surface areas appeared related to abundance (r=-0.63, Z score=-1.66, n=8, p<0.05). Male ... -
Acacia mangium Willd : benefits and threats associated with its increasing use around the world
(Springer Open, 2019-01-29)Background: Acacia mangium, a fast-growing tree native to parts of Indonesia, Papua New Guinea and Australia, has been cultivated outside its native environment and introduced into humid tropical lowland regions of Asia, ... -
Academic leaders must support inclusive scientific communities during COVID-19
(Springer Nature, 2020)The COVID-19 pandemic poses major challenges for all sectors of society, including scientists faced with abrupt disruptions and redirections of research and higher education1. The consequences of this crisis ... -
Acclimation effects on thermal tolerance in ameronothrid mites at sub-Antarctic Marion Island
(Stellenbosch : Stellenbosch University, 2005-12)ENGLISH ABSTRACT: Evidence for widespread ecological impacts due to rapid climate change is on the increase, with further warming predicted over the next century. This increase in warming has lead to organisms adjusting ... -
Acoustic Spatial Capture-Recapture (aSCR) and the Cryptic Cape Peninsula Moss Frog Arthroleptella lightfooti
(Stellenbosch : Stellenbosch University, 2018-12)ENGLISH ABSTRACT: Quantitative measurements of wildlife populations, such as population density, are quintessential for management and conservation. Acoustic Spatial Capture-recapture (aSCR) is a technique that is used ... -
Adapting to climate change : a perspective from evolutionary physiology
(Inter-Research Science, 2010)Much attention has been given to forecasting the likely effects of ongoing climate change on biodiversity. A large and often contentious literature has developed about how changes in species’ ranges should be modelled and ... -
‘African dinosaurs’ : permanent new exhibition at the South African Museum
(AOSIS OpenJournals, 2010-08)The new ‘African dinosaurs’ exhibit at the Iziko South African Museum in Cape Town capitalises on a fascination that almost every person – old and (especially) young – has with dinosaurs. A highway into the human ... -
African medicinal flora in the limelight
(AOSIS OpenJournals, 2011-10)In the past few years, African medicinal plants have received considerable attention, and it has been lamented that the documentation of the continent’s species that are used in traditional medicine lags behind China and ... -
Ailanthus altissima : an assessment of its distribution at different spatial scales and options for management in South Africa
(Stellenbosch : Stellenbosch University, 2017-03)ENGLISH ABSTRACT: The constant flow of goods into and out of cities has resulted in the proliferation of invasive species in urban areas and, because of this, cities are viewed as ‘hotspots’ for invasive species. The rise ... -
The alarm vocalizations of Brants' whistling rat, Parotomys Brantsii
(Stellenbosch : Stellenbosch University, 2001-12)ENGLISH ABSTRACT: The alarm calls of a colonial rodent, Brants' whistling rat (Parotomys brantsii), were investigated at Goegap Nature Reserve in the Northern Cape, South Africa. At this site P. brantsii occurs in sympatry ... -
Alien plant invasions and native plant extinctions : a six-threshold framework
(Oxford University Press on behalf of the Annals of Botany Company, 2016-07-15)Biological invasions are widely acknowledged as a major threat to global biodiversity. Species from all major taxonomic groups have become invasive. The range of impacts of invasive taxa and the overall magnitude of the ... -
Alien reptiles and amphibians in South Africa : towards a pragmatic management strategy
(Academy of Science of South Africa -ASSAf, 2008-02)Biological invasions are a growing problem in South Africa. Many alien species have been introduced for various reasons and through multiple pathways over the past few centuries. Invasive alien reptiles and amphibians ... -
Alien species and propagules in the Antarctic : movements through space and time
(Stellenbosch : University of Stellenbosch, 2009-03)ENGLISH ABSTRACT: Although the impacts of biological invasions are widely appreciated, a bias exists in research effort to post‐dispersal processes because of the difficulties of measuring propagule pressure and the detecting ... -
Alien species in South Africa’s national parks
(AOSIS OpenJournals, 2011-08)Invasive alien species (IAS) are one of the major threats to biodiversity in protected areas and pose a significant management challenge (see Allen, Brown & Stohlgren 2009; Pyšek, Jarošík & Kučera 2002). One of the first ... -
Aliens in Antarctica : accessing transfer of plant propagules by human visitors to reduce invasion risk
(Elsevier, 2014)Despite considerable research on biological invasions, key areas remain poorly explored, especially ways to reduce unintentional propagule transfer. The Antarctic represents a microcosm of the situation, with the numbers ... -
All-in-one : physics, chemistry and ecology are essential fields to thermal ecologists
(International Biogeography Society, 2018)The book clearly targets principles that are essential for understanding the relationship between temperature and organisms and does not represent a book for applications on how to do measurements or complex tasks in thermal ... -
Amphibian conservation in an urban park : a spatial approach to quantifying threats to Anura on the Cape peninsula
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: Species’ threat assessments produce generalized threat impact scores, often by considering regional-scale representations of threats. Cities, on the other hand, produce municipal-scale, high resolution ... -
An analysis of the Cordylus Polyzonus complex (Reptilia : Cordylidae) in the South-Western Cape
(Stellenbosch : University of Stellenbosch, 1990-03)Mouton and Oelofsen (1988) suggested that melanistic cordylid populations in the southwestern Cape represent relict, cold-adapted populations which evolved under adverse climatic conditions during the Last Glacial Period, ...
