Browsing Research Articles (Botany and Zoology) by Title
Now showing items 270-289 of 335
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Raising the flag on marine alien fouling species
(Regional Euro-Asian Biological Invasions Centre, 2017)Harbours are known introduction foci of marine alien species. They act as recipients of new introductions and as sources for regional spread. We report on subtidal surveys of fouling communities from 14 harbours along the ... -
Rapid adaptive response to a Mediterranean environment reduces phenotypic mismatch in a recent amphibian invader
(Company of Biologists, 2018)Invasive species frequently cope with ecological conditions that are different from those to which they adapted, presenting an opportunity to investigate how phenotypes change across short time scales. In 2000, the guttural ... -
Rapid, field-deployable method for collecting and preserving plant metabolome for biochemical and functional characterization
(Public Library of Science, 2018-09-06)Study of plant metabolome is a growing field of science that catalogs vast biochemical and functional diversity of phytochemicals. However, collecting and storing samples of plant metabolome, sharing these samples across ... -
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Recommendations for municipalities to become compliant with national legislation on biological invasions
(AOSIS Publishing, 2017)Background: The South African National Environmental Management: Biodiversity Act (No. 10 of 2004) (NEM:BA) requires all Organs of State at all spheres of government to develop invasive species monitoring, control and ... -
The relevance of using various scoring schemes revealed by an impact assessment of feral mammals
(Pensoft Publishers, 2018-05-16)Impact scoring schemes are useful for identifying to what extent alien species cause damage. Quantifying the similarity and differences between impact scoring schemes can help determine how to optimally use these tools for ... -
Reptile fauna of the Katse Dam catchment area and a biogeographical assessment of species composition in the Lesotho Highlands
(AOSIS, 1993)With only seven lizard and five snake species recorded to date, species richness in the catchment area is much lower than expected. Species richness in the western and central districts of the Lesotho Highlands in general ... -
A review of marine phylogeography in southern Africa
(Academy of Science of South Africa, 2011)The southern African marine realm is located at the transition zone between the Atlantic and Indo-Pacific biomes. Its biodiversity is particularly rich and comprises faunal and floral elements from the two major oceanic ... -
A river health assessment of selected Southwestern Cape rivers : riparian vegetation index (RVI) application, evaluation and alternatives
(Stellenbosch : Stellenbosch University, 2003-12)ENGLISH ABSTRACT: This study focuses on riparian vegetation condition at sites along three nvers within the southwestern Cape, South Africa namely the Lourens, Hout Bay and Palmiet Rivers. The Riparian Vegetation Index ... -
The rodents and other small mammals of the Kalahari Gemsbok National Park
(AOSIS, 1984)Aspects of daily activity rhythms, habitat selection, diet, population fluctuations and changes in community structure, as well as reproduction are discussed. The zoogeography of the park is alluded to. -from Authors -
The role of juvenile hormone in dominance behavior, reproduction and cuticular pheromone signaling in the caste-flexible epiponine wasp, Synoeca surinama
(BioMed Central, 2014)Background: The popular view on insect sociality is that of a harmonious division of labor among two morphologically distinct and functionally non-overlapping castes. But this is a highly derived state and not a prerequisite ... -
Roots and nodules response differently to P starvation in the mediterranean-type legume virgilia divaricata
(Frontiers Media, 2019-02-05)ENGLISH ABSTRACT: Virgilia divaricata is a tree legume that grows in the Cape Floristic Region (CFA) in poor nutrient soils. A comparison between high and low phosphate growth conditions between roots and nodules was ... -
Science to policy – reflections on the South African reality
(Academy of Science of South Africa, 2016)Research is a key resource in a knowledge economy and governance system. In order to enable research to benefit the nation and to contribute to growing the knowledge-based economy (the aims of the Global Change Grand ... -
Semi-automated segment generation for geographic novelty detection using edge and area metrics
(CONSAS Conference, 2012)An approach to generating accurate image segments for land-cover mapping applications is to model the process as an optimisation problem. Area-based empirical discrepancy metrics are used to evaluate instances of generated ... -
Sequential fragmentation of Pleistocene forests in an East Africa biodiversity hotspot : chameleons as a model to track forest history
(Public Library of Science, 2011-10-28)Background The Eastern Arc Mountains (EAM) is an example of naturally fragmented tropical forests, which contain one of the highest known concentrations of endemic plants and vertebrates. Numerous paleo-climatic studies ... -
Shell crushing resistance of alien and native thiarid gastropods to predatory crabs in South Africa
(Regional Euro-Asian Biological Invasions Centre, 2016)The successful invasion of freshwater and coastal lakes of South Africa by the recently introduced thiarid snail Tarebia granifera may be due in part to release from predatory pressure. This study aimed to determine the ... -
Significant local-scale plant-insect species richness relationship independent of abiotic effects in the temperate Cape Floristic Region biodiversity hotspot
(Public Library of Science, 2017)Globally plant species richness is a significant predictor of insect richness. Whether this is the result of insect diversity responding directly to plant diversity, or both groups responding in similar ways to extrinsic ... -
Similarity of introduced plant species to native ones facilitates naturalization, but differences enhance invasion success
(Nature Research (part of Springer Nature), 2018-11-06)ENGLISH ABSTRACT: The search for traits associated with plant invasiveness has yielded contradictory results, in part because most previous studies have failed to recognize that different traits are important at different ... -
Size-dependent functional response of Xenopus laevis feeding on mosquito larvae
(PeerJ, 2018-10-26)Predators can play an important role in regulating prey abundance and diversity, determining food web structure and function, and contributing to important ecosystem services, including the regulation of agricultural pests ... -
Small and genetically highly structured populations in a long-legged bee, Rediviva longimanus, as inferred by pooled RAD-seq
(BMC (part of Springer Nature), 2018-12-19)ENGLISH ABSTRACT: Adaptation to local host plants may impact a pollinator’s population genetic structure by reducing gene flow and driving population genetic differentiation, representing an early stage of ecological ...
