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Accueil du site → Doctorat → Royaume-Uni → 1990 → The conservation of Tunisian wetlands : a case study of grazing at Ichkeul

University of London (1990)

The conservation of Tunisian wetlands : a case study of grazing at Ichkeul

Ayache, F

Titre : The conservation of Tunisian wetlands : a case study of grazing at Ichkeul

Auteur : Ayache, F

Université de soutenance : University of London

Grade : Doctor of Philosophy (PhD) 1990

This thesis is about the conservation of wetlands in Tunisia in line with the new thinking about sustainable development for renewable natural resource conservation. A review of development concepts revealed that the proposed sustainable development and `wise use’ of wetlands have several limitations pertaining to their definition and means of application. It has also been shown that environmental degradation has been continuous throughout the history of Tunisia. Policies based on conventional economic development have further exacerbated this degradation after independence in 1956. A survey of the functions and values of Tunisian wetlands highlights their socio-economic and ecological importance, and gaps in knowledge. The functions and values of Ichkeul are taken as an illustration of wetland development and conservation in Tunisia. This case study highlights the low priority of conservation of wetlands in Tunisia and the significance of national development in the conservation of this wetland which has received national and international protection. The core of the thesis concentrates on the sustainable utilization of grazing on the marshes at the Ichkeul National Park. Enclosures were constructed to examine vegetation growth. A questionnaire and participant observation were used to describe the grazing cycle, evaluate the socio-economic importance of pastoralism and assess the reactions of the local people to the changes induced by development in the area. The evolution of the vegetation growth through the Net Above Primary Production (NAPP) and the ratio of fresh/dry weight vegetation accorded with the cycle of grazing as used by local people. This consisted on grazing on the mountains in winter and autumn ; on the marshes in spring, late summer and early autumn ; and on the harvested agricultural land in early summer.

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Page publiée le 16 février 2015, mise à jour le 25 novembre 2019