Browsing by Author "Maneveldt, Gavin"
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Is your garden green? How to be kind to your garden
Maneveldt, Gavin (Botanical Society of South Africa, 2008)Years ago, there was plenty of open, natural veld surrounding our towns and it was rich in wildlife. As towns expanded the natural veld and wildlife shrank into patches between towns, factories and farm land. With this ... -
Kelp forests: forests of a different kind
Maneveldt, Gavin (Botanical Society of South Africa, 2011)The United Nations (UN) Food and Agriculture Organization (FAO) defines a forest as being 'more than 0.5 ha with trees higher than 5 m and a canopy cover of more than 10%, or trees able to reach these thresholds in situ', ... -
Leptophytum foveatum Chamberlain & Keats (Rhodophyta, Corallinales) retaliates against overgrowth by other encrusting algae
Keats, Derek; Maneveldt, Gavin (Elsevier, 1994)The encrusting coralline alga, Leptophytum foveatum, is the most abundant crustose alga in the lower eulittoral zone at Yzerfontein and other exposed sites on the West Coast of South Africa. The surface of this species is ... -
Life at the margins of the continents: an examination of the intertidal marine life of the south Western Cape
Maneveldt, Gavin (Field Guides Association of Southern Africa, 2010)Imagine surviving in an environment that is neither truly marine nor truly terrestrial. That area just beyond the low-water mark of neap tides along the seashore is an example of just such an environment. The organisms ... -
Mechanisms of interference and exploitation competition in a guild of encrusting algae along a South African rocky shore
Vanmari, Dhiren; Maneveldt, Gavin (University of the Western Cape, 2019)Within the marine benthos, space is considered an absolute requirement that is often in limited supply. The often-low availability of this essential resource causes species to interact competitively through mechanisms of ... -
Of dead man's fingers, cord weed and hanging wrack: common brown seaweeds of the Cape Peninsula
Maneveldt, Gavin; Frans, Rene (Botanical Society of South Africa, 2000)In this, the second in the series on common intertidal seaweeds of the Cape Peninsula, we look at the brown seaweeds common to our rocky shores, with the exception of kelp, which will be covered in the next issue of Veld ... -
Of dinner plate, cochlear and pacman corallines: seven common intertidal encrusting red seaweeds of the Cape Peninsula
Maneveldt, Gavin; Frans, Rene (Botanical Society of South Africa, 2001)In the fifth and final part of this series of articles on common intertidal seaweeds of the Cape Peninsula, we look at encrusting coralline algae. These encrusting coralline and red seaweeds are widespread in shallow waters ... -
Of purple laver, tongue weed and hedgehog seaweed: common red seaweeds of the Cape Peninsula
Maneveldt, Gavin; Frans, Rene (Botanical Society of South Africa, 2001)The fourth part of our series on the common intertidal seaweeds of the Cape Peninsula looks at the red seaweeds, which form by far the largest group of seaweeds on the Peninsula and dominate the mid to lower intertidal ... -
Of sea bamboo, split fan kelp and bladder kelp: three common kelp species of the Cape Peninsula and West Coast
Maneveldt, Gavin; Frans, Rene (Botanical Society of South Africa, 2001)The third part in our series on the common intertidal seaweeds of the Cape Peninsula looks at the kelps, the giant brown seaweeds that occur in the subtidal and intertidal gullies of the Cape Peninsula and the west coast. ... -
Of sea lettuces and green sea intestines: common intertidal green seaweeds of the Cape Peninsula
Maneveldt, Gavin; Frans, Rene (Botanical Society of South Africa, 2000)Most of us know seaweed as that slippery stuff growing on the rocks or lying strewn along the beach at low tide making the beach smell. But do we really know much about them? Although not entirely true, seaweeds (or marine ... -
Rapid assessment of tissue nitrogen in cultivated Gracilaria gracilis (Rhodophyta) and Ulva lactuca (Chlorophyta)
Robertson-Andersson, Deborah; Wilson, D.T.; Bolton, John J.; Anderson, Robert J.; Maneveldt, Gavin (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 ... -
The role of encrusting coralline algae in the diets of selected intertidal herbivores
Maneveldt, Gavin; Wilby, Deborah; Potgieter, Michelle; Hendricks, Martin G.J. (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 ... -
Scale insects on ericas : an apparently natural, unnoticeable threat to local biodiversity
Maneveldt, Gavin (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 ... -
Seaweed diversity associated with a Brazilian tropical rhodolith bed
Amado-Filho, Gilberto M.; Maneveldt, Gavin; Pereira-Filho, G.H.; Manso, R.C.C.; Bahia, Ricardo (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 ... -
The South African Astronomical Observatory: a treasure house of history and biodiversity
Mustart, Penny; Maneveldt, Gavin (Botanical Society of South Africa, 2010)Traces the history of the Royal Observatory Cape of Good Hope, today known as the South African Astronomical Observatory (SAAO). Describes the flora and its management. -
South African seaweed aquaculture: A sustainable development example for other African coastal countries
Amosu, Albert O.; Robertson-Andersson, Deborah; Maneveldt, Gavin; Anderson, Robert J.; Bolton, John J. (Academic Journals, 2013)The green seaweed Ulva is one of South Africa's most important aquaculture products, constituting an important feed source particularly for abalone (Haliotis midae L.), and utilized as a bioremediation tool and other ... -
Structure of rhodolith beds from 4 to 55 meters deep along the southern coast of Espírito Santo State, Brazil
Amado-Filho, Gilberto M.; Maneveldt, Gavin; Manso, R.C.C.; Marins-Rosa, B.V.; Pacheco, M.R.; Guimarães, S.M.P.B. (Universidad Autónoma de Baja California, 2007)Rhodoliths are one of the most extensive benthic communities of the Brazilian continental shelf, but their structure is poorly known. The richest marine flora of Brazil’s coastal zone is found in Espírito Santo State and ... -
Synarthrophyton papillatum sp. nov.: a new species of non-geniculate coralline algae (Rhodophyta, Corallinales, Hapalidiaceae) from South Africa and Namibia
Maneveldt, Gavin; Keats, Derek; Chamberlain, Yvonne (Elsevier, 2008)Polychaete worm tubes within the mid to lower intertidal zone along the South African west coast were frequently observed to be overgrown by a minutely papillate species of encrusting coralline algae. Analysis of the ... -
Taxonomy of rhodolith-forming species of Lithophyllum (Corallinales; Rhodophyta) from Espírito Santo State, Brazil
Villas-Boas, A.B.; Riosmena-Rodriguez, G.M.; Amado-Filho, Gilberto M.; Maneveldt, Gavin; de O. Figueiredo, Marcia A. (International Phycological Society, 2009)The taxonomy of the rhodolith-forming species of Lithophyllum (Corallinales, Rhodophyta) found from Espirito Santo State, Brazil, were evaluated based on extensive subtidal sampling. A comparative analysis of the Brazilian ... -
Three species of Mastophora (Rhodophyta: Corallinales, Corallinaceae) in the tropical Indo-Pacific Ocean: M. rosea (C. Agardh) Setchell, M. pacifica (Heydrich) Foslie, and M. multistrata sp. nov
Keats, Derek; Maneveldt, Gavin; Baba, Masasuke; Chamberlain, Yvonne; Lewis, Jane E. (International Phycological Society, 2009)Three species of Mastophora (Corallinaceae, Corallinales, Rhodophyta) were found in extensive studies of non-geniculate coralline algae in various areas of the tropical Indo-Pacific, including French Polynesia, Fiji, Ryukyu ...