La conciliation difficile entre cultures vivrières et conservation de la nature da les forêts marécageuses côtières de Kosi Bay dans le Maputaland en Afrique du Sud

Grobler, R.; Moning, Christoph; Sliva, Jan; Bredenkamp, G.J.; Grundling, Piet‐Louis

doi:10.4000/geocarrefour.842

Cited by 6 publications

(11 citation statements)

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“…Three main peat types were encountered: wood peat, radicell peat and coarse sedge peat. Wood peat is a product of peat swamp forests, the common vegetation type in valley bottom peatlands such as Matitimani (site VB) (Grobler, 2009). We recognised Syzygium cordatum, Ficus trichopoda and Voacanga thouarsii as the main peat-building species of this vegetation community.…”

Section: Discussionmentioning

confidence: 99%

“…It can be assumed that fire occurred naturally, as the study sites are surrounded by savannah-like vegetation of grass- and woodlands, which is prone to fire in dry seasons (Scott, 2002). Because of human activities like the slash and burn practice, the frequency of fire increased in the last century (Grobler, 2009), which can be seen as well in site VB.…”

Section: Discussionmentioning

confidence: 99%

“…The macrofossil record indicates that fire is virtually not entering peat swamp forests, presumably because it doesn’t yield much dry combustible material. Also a development of a herbaceous layer is not common in wet peat swamp forest (Grobler, 2009).…”

Section: Discussionmentioning

confidence: 99%

“…Approximately two-thirds of those peatlands are situated on the Maputaland Coastal Plain in the KwaZulu-Natal province (Grundling et al, 1998). Peatlands face a lot of threats in this region, specifically through cultivation practices which include topsoil drainage of peat bodies, and the large-scale expansion of Eucalyptus plantations in the catchments of the peatlands, which deplete the local groundwater and expose peat soil to mineralisation (Grobler et al, 2004; Pretorius et al, 2014; Von Roeder, 2015). As peatlands fulfil valuable ecological functions and services for the local communities, conservation and renaturation efforts are needed to prevent further harm (Grobler et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

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The development pathways of two peatlands in South Africa over the last 6200 years: Implications for peat formation and palaeoclimatic research

et al. 2017

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For the first time, plant macrofossil analysis supported by detailed stratigraphic studies was used to reconstruct peatland development in South Africa. Two peat cores (4.69 and 1.5 m) from two coastal peatlands in KwaZulu-Natal were analysed for carpological macrofossils, wood and macrocharcoal. The first one, Matitimani, is an unchannelled valley bottom peatland (site VB), and the second one, KwaMazambane, an interdune depression peatland (site ID) further up in the same catchment. Radiocarbon dating reveals the peatland initiation at site VB at about 6260 cal. yr BP. Rising sea level and humid climatic conditions during that time coincide with the formation of organic gyttja (dominantly aquatic seeds like Nymphaea sp.). In ca. 4950 cal. yr BP, a change to drier condition took place, revealed by the formation of radicell peat from Cyperaceae, and an increase of fire frequency (macrocharcoal). After ca. 1200 cal. yr BP, peat swamp forest emerged, with Ficus trichopoda, Syzygium cordatum and Voacanga thouarsii forming wood peat. Site ID dates back to ca. 920 cal. yr BP. Its initiation is assumingly related to reduced drainage capacities of the catchment subsequently to the peat formation in Matitimani valley. A steady change from gyttja forming communities ( Nymphaea sp.– Eleocharis dulcis) to radicell peat-forming Cyperaceae communities took place. The long-term apparent rate of carbon accumulation (LORCA) is higher for site ID (89 gC m−2 yr−1) than for site VB (55 gC m−2 yr−1). Except for the peat swamp forest period, fire occurred frequently at both sites, however less in environments with frequent inundations.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The development pathways of two peatlands in South Africa over the last 6200 years: Implications for peat formation and palaeoclimatic research

et al. 2017

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“…Peat swamp forests (Fig. 8) are fresh-water forested wetlands that are established on peat and require a high water table with periodic saturated conditions, as a result of inundation, that creates a favourable hydrological regime for peat development (Sliva 2004). Most swamp forests occur in the proximity of lakes (Table 1) within inundated (flooded) inter-dune valleys (Grundling et al 2000).…”

Section: Peat Swamp Forestsmentioning

confidence: 99%

Peatland Types and Tropical Swamp Forests on the Maputaland Coastal Plain (South Africa)

et al. 2016

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The Maputaland Coastal Plain (MCP) is on the north-eastern seaboard of the KwaZulu-Natal Province, South Africa. It hosts a variety of wetlands and mire types that range from rare tropical swamp forest and calcareous fens to various inter-dune settings with groundwater-fed to surface water fed fens and floodplains. The MCP peatland areas are important not only for biodiversity (e.g. many endemic species) and supporting subsistence cultivation but they also host the largest and thickest peat deposits found in South Africa. The peatlands on the MCP developed in a drowned dune landscape and the peat thickness vary from 0.5 to 11 m. Threats and future challenges on the peatlands in Maputaland include the effects of land-use practices: plantations, agriculture and urbanization. Attempts to conserve swamp forests are often frustrated by the different management frameworks of provincial conservation agencies and the national government.

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Peatland Types and Tropical Swamp Forests on the Maputaland Coastal Plain (South Africa)

Grundling¹,

Grootjans²,

Grundling³

et al. 2018

The Wetland Book

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La conciliation difficile entre cultures vivrières et conservation de la nature da les forêts marécageuses côtières de Kosi Bay dans le Maputaland en Afrique du Sud

Cited by 6 publications

References 1 publication

The development pathways of two peatlands in South Africa over the last 6200 years: Implications for peat formation and palaeoclimatic research

The development pathways of two peatlands in South Africa over the last 6200 years: Implications for peat formation and palaeoclimatic research

Peatland Types and Tropical Swamp Forests on the Maputaland Coastal Plain (South Africa)

Peatland Types and Tropical Swamp Forests on the Maputaland Coastal Plain (South Africa)

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