Browsing Research Articles (Bioversity and Conservation Biology) by Title
Now showing items 173-192 of 246
-
Rapid assessment of tissue nitrogen in cultivated Gracilaria gracilis (Rhodophyta) and Ulva lactuca (Chlorophyta)
(NISC, 2009)Tissue nitrogen content and thallus colour were quantified using a rapid assessment method based on the Pantone® matt uncoated formula guide for raft-cultivated Gracilaria gracilis Steentoft Irvine et Farnham at Saldanha ... -
A rare new species of the genus Wiborgiella (Crotalarieae, Fabaceae)
(Elsevier, 2014)The new species Wiborgiella argentea is described. It is closely similar to Wiborgiella leipoldtiana and W. fasciculata but differs in its single-stemmed habit, densely sericeous leaves, wing petals that are longer than ... -
Reconstructing the deep-branching relationships of the papilionoid legumes
(Elsevier, 2013)Resolving the phylogenetic relationships of the deep nodes of papilionoid legumes (Papilionoideae) is essential to understanding the evolutionary history and diversification of this economically and ecologically important ... -
Records of ctenophores from South Africa
(PeerJ, 2021)Although ctenophores can be conspicuous components of the plankton in coastal marine ecosystems, only six species have been formally described from around South Africa. Using photographs from local community scientists, ... -
Reef benthos of Seychelles - A field guide
(Pensoft Publishers, 2021)During the 2019 First Descent: Seychelles Expedition, shallow and deep reef ecosystems of the Seychelles Outer Islands were studied by deploying a variety of underwater technologies to survey their benthic flora and fauna. ... -
Refinement of locality data for FitzSimons’ Garter Snake Elapsoidea sundevallii fitzsimonsi Loveridge, 1948 provides a better estimation of its distribution
(Herpetology Notes, 2020)Foundational data on species taxonomy, distribution and ecology forms the basis of assessing species for their conservation status. For African reptiles, distributional data are sorely lacking for many taxa, sometimes ... -
Renosterveld conservation in South Africa: A case study for handling uncertainty in knowledge-based neural networks for environmental management
(International Society for Environmental Information Sciences, 2009)This work presents an artificial intelligence method for the development of decision support systems for environmental management and demonstrates its strengths using an example from the domain of biodiversity and ... -
Reviewing evidence of marine ecosystem change off South Africa
(National Inquiry Services Centre, 2013)Recent changes have been observed in South African marine ecosystems. The main pressures on these ecosystems are fishing, climate change, pollution, ocean acidification and mining. The best long-term datasets are for trends ... -
A revision of the genus Strongylodesma Lévi (Porifera: Demospongiae: Latrunculiidae) with descriptions of four new species
(Cambridge University Press, 2009)The sponge genus Strongylodesma is reviewed and redefined, and now accommodates eight closely related species. The type species of Strongylodesma Le´vi is redescribed and an additional two new species are described from ... -
Rhodolith bed discovered off the south African coast
(MDPI, 2020)Rhodolith beds have not previously been recorded in South Africa. A multidisciplinary research effort used remote sampling tools to survey the historically unexplored continental shelf off the Eastern Cape coast of South ... -
Riverine dominance of a nearshore marine demersal food web: evidence from stable isotope and C/N ratio analysis
(National Inquiry Services Centre (NISC), 2016)The Thukela Bank, KwaZulu-Natal, supports a diverse ecosystem and South Africa’s only prawn fishery. Oceanographic studies suggest riverine input is not important for the biology of this system, whereas biological studies ... -
The role of encrusting coralline algae in the diets of selected intertidal herbivores
(Springer Verlag, 2006)Kalk Bay, South Africa, has a typical south coast zonation pattern with a band of seaweed dominating the mid-eulittoral and sandwiched between two molluscan-herbivore dominated upper and lower eulittoral zones. Encrusting ... -
Role of jellyfish in the plankton ecosystem revealed using a global ocean biogeochemical model
(Copernicus GmbH, 2021)Jellyfish are increasingly recognised as important components of the marine ecosystem, yet their specific role is poorly defined compared to that of other zooplankton groups. This paper presents the first global ocean ... -
ROV assessment of mesophotic fish and associated habitats across the continental shelf of the Amathole region
(Nature Research, 2021)Understanding how fsh associate with habitats across marine landscapes is crucial to developing efective marine spatial planning (MSP) in an expanding and diversifying ocean economy. Globally, anthropogenic pressures ... -
Sampling bias in reptile occurrence data for the Kruger National Park
(AOSIS, 2020)To effectively conserve and manage species, it is important to (1) understand how they are spatially distributed across the globe at both broad and fine spatial resolutions and (2) elucidate the determinants of these ... -
Sampling bias in reptile occurrence data for the Kruger National Park
(OpenJournals Publishing AOSIS (Pty) Ltd, 2020)To effectively conserve and manage species, it is important to (1) understand how they are spatially distributed across the globe at both broad and fine spatial resolutions and (2) elucidate the determinants of these ... -
Scale insects on ericas : an apparently natural, unnoticeable threat to local biodiversity
(Botanical Society of South Africa, 2008)Introduction: An excursion into the Limietberg Nature Reserve in the Bain's Kloof Mountains during the winter of 2006, one that I have undertaken regularly over the past ten years or so, had revealed a noticeably high ... -
Scale-dependent orientation in movement paths: a case study of an African viper
(Wiley, 2016)Decisions relating to the orientation of movement by animals and how this translates into movement patterns can occur at multiple spatial scales simultaneously, but this interaction is poorly understood for many groups of ... -
Seaweed diversity associated with a Brazilian tropical rhodolith bed
(Universidad Autónoma de Baja California, 2010)This study describes the predominantly tropical, subtidal seaweed populations growing on rhodoliths between 4 and 18 m depth in the southern part of Espírito Santo State (Brazil). Qualitative and quantitative sampling ... -
Seaweeds in two oceans: beta-diversity
(Frontiers Media, 2017)Several species assembly mechanisms have been proposed to structure ecological communities. We assess the biogeography of seaweeds along 2,900 km of South Africa’s coastline in relation to a thermal gradient produced by ...