Data/hora: 11/06/2024 00:54:28

Provedor de dados: | 20
País: | Belgium

Título:

Specific diversity of the benthic macrofauna within the western coast of Tunis bay and the Djerba island coast (southwestern Mediterranean)

Diversité spécifique de la macrofaune benthique dans la côte ouest de la baie de Tunis et la côte de l'île de Djerba (sud-ouest de la Méditerranée)

Autores: | Afli, A.; Ibin Chaabane, K.; Chakroun, R.; Jabeur, Ch.; Ramos-Espla, A.A.
Data: | 2015-01-29
Ano: | 2013
Palavras-chave: | Benthos.
Resumo: | In this study, 21 stations were sampled, 11 in the Djerba island coast and 10 in the western coast of Tunis bay. Then, samples were sifted on a square mesh of 1 mm a side, and the animals collected were identified and counted. Lacking an efficient single index suitable for application in all situations, several traditional nonparametric indices of biodiversity were selected, calculated and discussed. Results show that the community composition is totally different in the two studied sites, and, within each site, several species are common, butthey exchange the leader ranks from one station to another. For biodiversity measurement and since results show varying values depending on indices at several stations, an arithmetic mean index was calculated at each station on the basis of the most similar indices. It shows that, overall, the  biodiversity is significantly higher in Tunis bay coast than in Djerba coast. These results are more reliable considering the real environmental /anthropogenic constraints imposed on both sites. Indeed, Djerba coast is subject, these last decades, to strong industrial, urban and fishing activities, causing significant regression of benthic habitats, which can led to a reduction of the biodiversity.
Tipo: | Journal Contribution
Idioma: | Inglês

Identificador:

Bulletin de l'Institut National des Sciences et Technologies de la Mer, 40, p. 51-62

0330-0080

http://hdl.handle.net/1834/5905

Fonte: | http://creativecommons.org/licenses/by-nc/3.0/