Search Results - "Hattas, Dawood"

Spinescence and Total Phenolic Content Do Not Influence Diet Preference of a Critically Endangered Megaherbivore, but the Mix of Compounds Does by Scogings, Peter F., Demmer, Stuart, Hattas, Dawood

“…In contrast to understanding spinescence in savanna woody species, little is known about the functions of plant secondary metabolites (PSM). Negative effects…”
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A thorny issue: Woody plant defence and growth in an East African savanna by Wigley, Benjamin J., Coetsee, Corli, Augustine, David J., Ratnam, Jayashree, Hattas, Dawood, Sankaran, Mahesh, Durigan, Giselda

“…Recent work suggests that savanna woody plant species utilise two different strategies based on their defences against herbivory; a low nutrient/high chemical…”
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Flower colour divergence is associated with post-fire regeneration dimorphism in the fynbos heath Erica coccinea subsp. coccinea (Ericaceae) by Ojeda, Fernando, Midgley, Jeremy, Pauw, Anton, Lavola, Anu, Casimiro-Soriguer, Ramón, Hattas, Dawood, Segarra-Moragues, José Gabriel, Julkunen-Tiitto, Riitta

“…The South African Cape fynbos heath Erica coccinea subsp. coccinea is polymorphic for post-fire regeneration mode (seeder/resprouter), flower colour…”
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Seasonal regulation of condensed tannin consumption by free-ranging goats in a semi-arid savanna by Mkhize, Ntuthuko R, Heitkӧnig, Ignas M A, Scogings, Peter F, Hattas, Dawood, Dziba, Luthando E, Prins, Herbert H T, de Boer, Willem F

“…Although condensed tannins (CTs) are known to reduce forage intake by mammalian herbivores in controlled experiments, few studies have tested these effects in…”
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Feeding choices and impacts of extralimital giraffe on two keystone tree species in the Kgalagadi National Park by Viljoen, Storme, Shadwell, Eleanor, Hattas, Dawood, February, Edmund

“…In this article we determine the effect of an extralimital megaherbivore on the reproductive potential and vegetation structure of two keystone tree species in…”
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Differential phenolic profiles in six African savanna woody species in relation to antiherbivore defense by Hattas, Dawood, Hjältén, Joakim, Julkunen-Tiitto, Riitta, Scogings, Peter F., Rooke, Tuulikki

“…African savanna woody species differ in chemistry with related Acacia species having dissimilar chemical profiles. The unpalatable Euclea divinorum had a high…”
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Evaluating the Potential Use of Seriphium plumosum L. as Forage in the Semiarid Grassland of Gauteng Province, South Africa by Pule, Hosia T., Tjelele, Julius T., Hattas, Dawood, Tedder, Michelle J.

“…Strategies and mechanisms are needed to enhance encroaching shrub species use by ruminants. Seriphium plumosum crude proteins, neutral detergent fibers, total…”
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Does the Growth Differentiation Balance Hypothesis Explain Allocation to Secondary Metabolites in Combretum apiculatum, an African Savanna Woody Species? by Hattas, Dawood, Scogings, Peter F., Julkunen-Tiitto, Riitta

“…The growth differentiation balance hypothesis (GDBH) provides a framework that predicts a trade-off between costs of secondary metabolites (SMs) relative to…”
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The quantification of condensed tannins in African savanna tree species by Hattas, Dawood, Julkunen-Tiitto, Riitta

“…Expressing condensed tannin as Quebracho tannin equivalents overestimated concentration by 0.7–8.3 times, whereas Sorghum underestimated concentration, except…”
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Coexistence of a C 4 grass and a leaf succulent shrub in an arid ecosystem. The relationship between rooting depth, water and nitrogen by February, Edmund Carl, Allsopp, Nicky, Shabane, Tirello, Hattas, Dawood

“…Here we aim to demonstrate that in arid environments the competitive balance between species can be determined by niche separation with either nitrogen or…”
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Native legume species as potential fodder crops in the mediterranean renosterveld shrubland, South Africa by Chimphango, Samson B.M., Gallant, Luke H., Poulsen, Zoe C., Samuels, M. Igshaan, Hattas, Dawood, Curtis, Odette E., Muasya, A. Muthama, Cupido, Clement, Boatwright, James S., Howieson, John

“…The limited grazeable size of renosterveld vegetation in the Western Cape warranted assessment of chemical and fibre composition of the species to determine…”
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Substantial Insect Herbivory in a South African Savanna‐Forest Mosaic: A Neglected Topic by Maraia, Heveakore, Charles‐Dominique, Tristan, Tomlinson, Kyle W., Staver, Ann Carla, Jorge, Leonardo Re, Gélin, Uriel, Jancuchova‐Laskova, Jitka, Sam, Legi, Hattas, Dawood, Freiberga, Inga, Sam, Katerina

“…ABSTRACT Insect herbivory plays a crucial role in shaping plant communities in many terrestrial ecosystems. However, in African savannas, insect herbivory has…”
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Coexistence of a C4 grass and a leaf succulent shrub in an arid ecosystem. The relationship between rooting depth, water and nitrogen by February, Edmund Carl, Allsopp, Nicky, Shabane, Tirello, Hattas, Dawood

“…Here we aim to demonstrate that in arid environments the competitive balance between species can be determined by niche separation with either nitrogen or…”
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Seasonal variations in nutrients and secondary metabolites in semi-arid savannas depend on year and species by Scogings, Peter F., Hattas, Dawood, Skarpe, Christina, Hjältén, Joakim, Dziba, Luthando, Zobolo, Alpheus, Rooke, Tuulikki

“…Semi-arid savannas are characterised by alternating wet and dry seasons and large inter-annual rainfall fluctuations that affect plant growth. Carbon-based…”
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Seasonal regulation of condensed tannin consumption by free-ranging goats in a semiarid savanna by Mkhize, Ntuthuko R, Heitkönig, Ignas M.A, Scogings, Peter F, Hattas, Dawood, Dziba, Luthando E, Prins, Herbert H.T, Boer, Willem F., De

“…Although condensed tannins (CTs) are known to reduce forage intake by mammalian herbivores in controlled experiments, few studies have tested these effects in…”
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Feeding choices and impacts of extralimital giraffe on two keystone tree species in the Kgalagadi National Park by Viljoen, Storme, Shadwell, Eleanor, Hattas, Dawood, February, Edmund

“…In this article we determine the effect of an extralimital megaherbivore on the reproductive potential and vegetation structure of two keystone tree species in…”
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Nutrient and secondary metabolite concentrations in a savanna are independently affected by large herbivores and shoot growth rate by Scogings, Peter F., Hjältén, Joakim, Skarpe, Christina, Hattas, Dawood, Zobolo, Alpheus, Dziba, Luthando, Rooke, Tuulikki

“…Carbon-based secondary metabolites (CBSMs) such as tannins are assumed to function as plant defences against herbivores. CBSMs are thought to be inversely…”
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Coexistence of a [C.sub.4] grass and a leaf succulent shrub in an arid ecosystem. The relationship between rooting depth, water and nitrogen by February, Edmund Carl, Allsopp, Nicky, Shabane, Tirello, Hattas, Dawood

“…Here we aim to demonstrate that in arid environments the competitive balance between species can be determined by niche separation with either nitrogen or…”
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Coexistence of a C sub(4) grass and a leaf succulent shrub in an arid ecosystem. The relationship between rooting depth, water and nitrogen by February, Edmund Carl, Allsopp, Nicky, Shabane, Tirello, Hattas, Dawood

“…Here we aim to demonstrate that in arid environments the competitive balance between species can be determined by niche separation with either nitrogen or…”
Get full text

Coexistence of a C^sub 4^ grass and a leaf succulent shrub in an arid ecosystem. The relationship between rooting depth, water and nitrogen by February, Edmund Carl, Allsopp, Nicky, Shabane, Tirello, Hattas, Dawood

“…Issue Title: Special Issue: Phosphorus sustains life Here we aim to demonstrate that in arid environments the competitive balance between species can be…”
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