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Now showing items 211-220 of 242
Metabarcoding of zooplankton to derive indicators of pelagic ecosystem status
(Academy of Science of South Africa, 2022)
Zooplankton play a key role in marine food webs and carbon cycling and are useful indicators of climate-related changes and ocean health in pelagic ecosystems. Zooplankton are traditionally identified to species through ...
Infaunal benthic communities from the inner shelf off southwestern Africa are characterised by generalist species
(Public Library Science, 2015)
Infaunal communities of benthic macro-organisms ( 1mm length) were studied from 81
samples collected across nine sites to the north and south of the Orange River in the Benguela upwelling ecosystem in 2003, with a view ...
The effect of anthropogenic noise and weather conditions on male calls in the bladder grasshopper Bullacris unicolor
(Taylor and Francis Group, 2021)
Acoustic communication in animals relies upon specificcontextsandenvironments for effective signal transmission. Increasing anthropo-genic noise pollution and different weather conditions can disruptacoustic communication. ...
Environmental response and ph tolerance of induced co2 in ulva rigida c.agardh, 1823(Chlorophyta) under controlled conditions
(PAS FORUM, 2022)
The increase in integrated multitrophic aquaculture (IMTA), where seaweed (particularly Ulva rigidaC.Agardh, 1823) is
used as a feedstock and a wastewater scrubber in South African IMTA systems, has necessitated research ...
A taxonomic revision of chamaecrista (caesalpinioideae, cassieae, cassiinae) in Southern Africa
(American Society of Plant Taxonomists, 2022)
The southern African species of Chamaecrista were all treated under Cassia in Gordon-Gray’s treatment for the Flora of Southern
Africa. However, given the subsequent generic recircumscriptions in the subtribe Cassiinae, ...
In a rough spot: Declines in Arthroleptella rugosa calling densities are explained by invasive pine trees
(Wiley, 2023)
Basing conservation interventions on evidence is important for justifying their associated cost and gauging their effectiveness. For amphibians, the number of studies available to support conservation ...
Temporal partitioning of Bullacris unicolor (Orthoptera: Pneumoridae) calling activity to avoid predation
(Taylor and Francis Group, 2023)
Ecological interactions, including competition, predation, and environmental conditions, may significantly impact acoustic signal-ling behaviour. Here we characterise nocturnal signalling patterns in the bladder grasshopper ...
Mesoscale structure of neuston assemblages across the southern Indian Ocean subtropical gyre
(Elsevier, 2022-12-28)
Despite concern around plastic pollution in subtropical gyres, our understanding of the biological component of
the neustonic layer (upper 20 cm of the ocean) in these areas is poor. Here we investigate the neuston ...
Biocontrol Potential of Bacillus subtilis and Bacillus tequilensis against Four Fusarium Species
(MDPI, 2023)
The use of biological control agents as opposed to synthetic agrochemicals to control
plant pathogens has gained momentum, considering their numerous advantages. The aim of this
study is to investigate the biocontrol ...
African rangelands and pastoralism in a changing continent: Perspectives and opportunities
(Taylor and Francis Group, 2023)
Eighty-five years ago, Africa was described as a land of promise because it provided an immense opportunity for maximum return in the minimum time (Olaniyan 2000). It was treated this way because ...