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Browsing by Subject "Grasslands"

Now showing items 1-14 of 14

Conundrums in mixed woody-herbaceous plant systems

Author: House, JI ; Archer, S ; Breshears, DD ; Scholes, RJ Date: Nov 2003 The article aims to identify approaches to improve our understanding of, and predictive capability for, mixed tree-grass systems. Elucidation of the interactions, dynamics and determinants, and identification of robust generalizations that ... Read more
Ecology of grazing lawns in Africa

Author: Hempson, GP ; Archibald, S ; Bond, WJ ; Ellis, RP ; Grant, CC ; Kruger, LM ; Kruger, FJ ; Moxley, C ; Owen-Smith, N ; Peel, MJS ; Smit, IPJ ; Vickers, KJ Date: Sep 2014 Grazing lawns are a distinct grassland community type, characterised by short-stature and with their persistence and spread promoted by grazing. In Africa, they reveal a long co-evolutionary history of grasses and large mammal grazers. The ... Read more
Fire history of the savanna ecosystems in the Kruger National Park, South Africa, between 1941 and 1996

Author: Van Wilgen, BW ; Biggs, H ; O'Regan, SP ; Mare, N Date: Apr 2000 This paper analyses the fire history of the Kruger National Park (1.9 million ha), South Africa, for different periods in the park's history, where fire protection was followed by prescribed burning and then a 'natural' (lightning) fire policy. ... Read more
Impacts, efficacy and economics of Bushwacker Sc (Bromacil) In controlling Acacia invasion in South Africa

Author: Dube, S ; Oluwole, FA ; Lesoli, MS Date: Jan 2011 The widespread transition of grasslands and savannas to shrub-lands during the last 50-100 years has elicited significant debate concerning the causes of these changes and has given rise to a number of investigations. Often the encroaching ... Read more
Increased tree densities in South African savannas: >50 years of data suggests CO2 as driver

Author: Buitenwerf, R ; Bond, WJ ; Stevens, N ; Trollope, WSW Date: Feb 2012 For the past century, woody plants have increased in grasslands and savannas worldwide. Woody encroachment may significantly alter ecosystem functioning including fire regimes, herbivore carrying capacity, biodiversity and carbon storage ... Read more
Mapping the potential for hay making in the rangelands: A methodological proposition

Author: Makuma-Massa, H ; Bemigisha, J ; Kyasimire, B ; Nyiramahoro, E ; Begumana, J ; Swidiq, M ; Egeru, A ; Cho, Moses A Date: Oct 2017 We present information useful to various stakeholders, including land managers, agency personnel, practitioners, and researchers, as it presents methodology for: 1) Determining the best period for hay harvest corresponding to peak productivity ... Read more
Monitoring in South African grasslands

Author: Mentis, MT Date: Dec 1984 The main purpose of this document is to propose how ecological monitoring might be developed in the Grassland Biome of South Africa. Monitoring is defined as the maintenance of regular surveillance to test the null hypothesis of no change in ... Read more
Phytosociological classification of the Nylsvley nature reserve

Author: Coetzee, BJ ; Van Der Meulen, F ; Zwanziger, S ; Gonsalves, P ; Weisser, PJ Date: Dec 1977 The vegetation of the Nylsvley Nature Reserve in the Transvaal Mixed Bushveld is classified hierarchically by the Braun-Blanquet method of vegetation survey. The vegetation is seasonal grassland and deciduous savanna with four floristically ... Read more
Precipitation as driver of carbon fluxes in 11 African ecosystems

Author: Merbold, L ; Ardo, J ; Arneth, A ; Scholes, RJ ; Nouvellon, Y ; De Grandcourt, A ; Archibald, S ; Bonnefond, JM ; Boulain, N ; Brueggemann, N ; Bruemmer, C ; Cappelaere, B ; Ceschia, E ; El-Khidir, HAM ; El-Tahir, BA ; Falk, U ; Lloyd, J ; Kergoat, L ; Le Dantec, V ; Mougin, E ; Muchinda, M ; Mukelabai, MM ; Ramier, D ; Roupsard, O ; Timouk, F ; Veenendaal, EM ; Kutsch, WL Date: 2009 This study reports carbon and water fluxes between the land surface and atmosphere in eleven different ecosystems types in Sub-Saharan Africa, as measured using eddy covariance (EC) technology in the first two years of the CarboAfrica network ... Read more
Precipitation as driver of carbon fluxes in 11 African ecosystems

Author: Merbold, L ; Ardo, J ; Arneth, A ; Scholes, RJ ; Nouvellon, Y ; De Grandcourt, A ; Archibald, SA ; Bonnefond, JM ; Boulain, N ; Bruemmer, C ; Brueggemann, N ; Cappelaere, B ; Ceschia, E ; El-Khidir, HAM ; El-Tahir, BA ; Falk, U ; Lloyd, J ; Kergoat, L ; Le Dantec, V ; Mougin, E ; Muchinda, M ; Mukelabai, MM ; Ramier, D ; Roupsard, O ; Timouk, F ; Veenendaal, EM ; Kutsch, L Date: 2008 This study reports carbon and water fluxes between the land surface and atmosphere in eleven different ecosystems types in Sub-Saharan Africa, as measured using eddy covariance (EC) technology in the first two years of the CarboAfrica network ... Read more
South African land-cover characteristics database: a synopsis of the landscape

Author: Fairbanks, DHK ; Thompson, MW ; Vink, DE ; Newby, TS ; Van den Berg, HM ; Everard, DA Date: Feb 2000 Accurate, up-to-date information on land cover and land-use is essential for strategic planning, sustainable resource management and environmental research. A land-cover database for South Africa, Swaziland and Lesotho, designed for use in a ... Read more
Water relations and the effects of clearing invasive Prosopis trees on groundwater in an arid environment in the Northern Cape, South Africa

Author: Dzikiti, Sebinasi ; Schachtschneider, K ; Naiken, V ; Gush, Mark B ; Moses, G ; Le Maitre, David C Date: Mar 2013 Several Prosopis species have been introduced into South Africa in the last century and many of them have become invasive. This study investigates the water relations, effects of clearing, and the seasonal dynamics of groundwater use by ... Read more
Water use by black wattle (Acacia mearnsii): implications for the link between removal of invading trees and catchment streamflow response

Author: Dye, P ; Jarmain, C Date: Jan 2004 This paper reviews relevant available information on rates of total evaporation from black waffle and from grasslands and fynbos shrublands. These data provide an indication of the likely change in catchment water yield following invasion or ... Read more
Water use of grasslands, agroforestry systems and indigenous forests

Author: Everson, CS ; Dye, PJ ; Gush, Mark B ; Everson, TM Date: Dec 2011 The biotic and abiotic components of ecosystems affect each other through complex interactions and processes. These dynamic interactions give ecosystems their distinct identities and provide ecosystem services critical to human survival (e.g. ... Read more

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Browsing by Subject "Grasslands"

Browsing by Subject "Grasslands"

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