التفاصيل البيبلوغرافية
| العنوان: |
Diagnostic écologique du parc national ichkeul (tunisie) après la construction des barrages: cas des oiseaux d'eau ; Ecological diagnosis of the Ichkeul National Park (Tunisia) after dams building : the case of waterbirds |
| المؤلفون: |
HAMDI, Nabil, TOUIHRI, Moez, CHARFI, Faouzia |
| المساهمون: |
Faculté des Sciences de Tunis, Département de Biologie, Unité de Recherche d'Écologie Animale et Systématique Évolutive, Campus Universitaire El Manar 2092, TUN |
| المصدر: |
Revue d'écologie [ISSN 0249-7395], 2012, vol. 67, N°1, pp. 41-62 |
| بيانات النشر: |
Société nationale de protection de la nature et d'acclimatation de France, Paris (FRA) |
| سنة النشر: |
2012 |
| المجموعة: |
I-Revues (E-Journals, INIST-CNRS) |
| مصطلحات موضوعية: |
Aves, Tunisie, Parc national, Surveillance écologique, Oiseau aquatique, Richesse spécifique, Diversité espèces, Impact environnement, Barrage, Construction, Tunisia, National park, Environmental monitoring, Waterfowl, Species richness, Species diversity, Environment impact, Dam |
| الوصف: |
The Ichkeul National Park (INP) has been ratified as a National Park (1980), a Biosphere Reserve under UNESCO’s Man and the Biosphere Program (1977), and a Wetland of International Importance under the Ramsar Convention (1980), and subsequently has been inscribed on the World Heritage List (1980). However, this area is actually threatened by three dams which can retain up to 75 % of the inflow freshwater. According to this situation, fundamental modifications of different components of the INP were recognized. The modification of the hydrological parameters and the response of waterbird community to dam building have been specifically assessed in the present paper. Across 2001–2004, the salinity of the lake ranged from an average of 21 g l−1 in winter to 37 g l−1 in summer with an annual average of 27 g l−1. This latest value was more than two times that recorded before the dams were built. Thus, the densities of Potamogeton and Scirpus populations were dramatically decreased, reducing the available food of herbivorous waterbirds, notably ducks and coots. They were restricted each year to within the mouths of rivers and covered a small area in September before disappearing by the end of October and November. Concerning waterbird communities, a total of 71 species were counted. The commonest species that accounted for more than 54 % of the total abundance of the waterbird communities were : Common Coot (21 %), Common Pochard (16 %), Eurasian Wigeon (12 %) and Greater Flamingo (5 %). The most abundant trophic groups were herbivores (11 species and 75 % of the total abundance of waterbird communities), filterers (3 species and 5 %), vertebrate consumers (14 species and 3 %) and insectivores (26 species and 9 %). Subordinate ones were invertebrates-vertebrates consumers (8 species and 1 %), invertebratesherbivores (6 species and 5 %) and omnivores (3 species and 2 %). The total species richness varied significantly among months. It ranged from 39 to 41 species, between November and December, and the minimum from 12 ... |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
French |
| تدمد: |
2429-6422 |
| Relation: |
Revue d'écologie; Nabil HAMDI, Moez TOUIHRI, Faouzia CHARFI; Diagnostic écologique du parc national ichkeul (tunisie) après la construction des barrages: cas des oiseaux d'eau; Revue d'écologie, 2012, vol. 67, N°1, pp. 41-62; http://hdl.handle.net/2042/55901 |
| الاتاحة: |
http://hdl.handle.net/2042/55901 |
| Rights: |
Accès libre avec barrière mobile de 6 mois - Licence d'utilisation : http://irevues.inist.fr/utilisation |
| رقم الانضمام: |
edsbas.E34380DC |
| قاعدة البيانات: |
BASE |