Browsing Research Articles (Botany and Zoology) by Title
Now showing items 235-254 of 337
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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 ... -
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 ... -
Patterns and traits associated with invasions by predatory marine crabs
(Pensoft Publishers, 2018-08-28)Predatory crabs are considered amongst the most successful marine invasive groups. Nonetheless, most studies of these taxa have been descriptive in nature, biased towards specific species or regions and have seldom considered ... -
Patterns of plant diversity and endemism in Namibia
(AOSIS, 2006)Species richness, endemism and areas that are rich in both species and endemic species were assessed and mapped for Namibia. High species diversity corresponds with zones where species overlap. These are particularly obvious ... -
Patterns of selectivity in introductions of mammal species worldwide
(Pensoft Publishers, 2017-01-27)ENGLISH ABSTRACT: Humans have an extremely long history of transporting and introducing mammal species outside their native geographic ranges. The characteristics of the species introduced (taxonomy, life-history, ... -
Pharmaceutical and personal care products (PPCPs) as endocrine disrupting contaminants (EDCs) in South African surface waters
(South African Water Research Commission, 2017-10)Globally, water resources are under constant threat of being polluted by a diverse range of man-made chemicals, and South Africa is no exception. These contaminants can have detrimental effects on both human and wildlife ... -
Phenotypic plasticity mediates climate change responses among invasive and indigenous arthropods
(Royal Society Pulishing, 2007-10)Synergies between global change and biological invasion have been identified as a major potential threat to global biodiversity and human welfare. The global change-type drought characteristic of many temperate terrestrial ... -
The phylogenetic significance of leaf anatomical traits of southern African oxalis
(BioMed Central, 2016-10)Background: The southern African Oxalis radiation is extremely morphologically variable. Despite recent progress in the phylogenetics of the genus, there are few morphological synapomorphies supporting DNA-based clades. ... -
Phylogeny and taxonomy of the round-eared sengis or elephant-shrews, genus Macroscelides (Mammalia, Afrotheria, Macroscelidea)
(Public Library of Science, 2012)The round-eared sengis or elephant-shrews (genus Macroscelides) exhibit striking pelage variation throughout their ranges. Over ten taxonomic names have been proposed to describe this variation, but currently only two taxa ... -
Phylogeographic patterning among two codistributed shrimp species (Crustacea: Decapoda: Palaemonidae) reveals high levels of connectivity across biogeographic regions along the South African coast
(Public Library of Science, 2017-03-10)We compare the genetic structuring and demographic history of two sympatric caridean shrimp species with distinct life history traits, one amphidromous species Palaemon capensis and one marine/estuarine species Palaemon ... -
Phylogeographic patterning among two codistributed shrimp species (crustacea: decapoda: palaemonidae) reveals high levels of connectivity across biogeographic regions along the South African coast
(Public Library of Science, 2017-03-10)We compare the genetic structuring and demographic history of two sympatric caridean shrimp species with distinct life history traits, one amphidromous species Palaemon capensis and one marine/estuarine species Palaemon ... -
A phylogeographic survey of the pygmy mouse 'Mus Minutoides' in South Africa : taxonomic and karyotypic inference from cytochrome b sequences of museum specimens
(PLoS, 2014)The African pygmy mice (Mus, subgenus Nannomys) are a group of small-sized rodents that occur widely throughout sub-Saharan Africa. Chromosomal diversity within this group is extensive and numerous studies have shown the ... -
Physiological response of vitis vinifera L. (cv. chenin blanc) grafted onto different rootstocks on a relatively saline soil
(South African Society for Enology and Viticulture, 1992)Certain physiological parameters, namely leaf water potential, stomatal resistance and rate of photosynthesis of Chenin blanc grafted onto 10 rootstock cultivars on a relatively saline soil under irrigation in a hot region ... -
Plant communities along the Eerste River, Western Cape, South Africa : community descriptions and implications for restoration
(AOSIS Publishing, 2013)Riparian plant communities fulfil many functions, including the provision of corridors linking protected areas and other zones of high conservation value. These habitats across much of South Africa’s Cape Floristic Region, ...
