Population distribution and differentiation of mangrove and rocky shore gastropods (littoraria spp.) in Dar es Salaam, mnazi bay-ruvuma estuary and Inhaca island in Mozambique
| dc.contributor.author | Sallema, Rose Ephraim | |
| dc.date.accessioned | 2019-12-20T07:36:48Z | |
| dc.date.accessioned | 2020-01-07T13:36:04Z | |
| dc.date.available | 2019-12-20T07:36:48Z | |
| dc.date.available | 2020-01-07T13:36:04Z | |
| dc.date.issued | 2008 | |
| dc.description | Available in print copy | en_US |
| dc.description.abstract | This study assessed population distribution and differentiation of mangrove and rocky shore littorinid species (Littoraria scabra, L. pallescens, L. subvittata, L. intermedia and L. glabrata) in Dar es Salaam, Mnazi Bay-Ruvuma Estuary and Inhaca Island. Nested sampling design was employed in assessing spatial scale variation of Littoraria species. For littorinids distribution study, sampling was conducted in wet and dry seasons whereas in population differentiation study, sampling was done only once. The current study revealed a significant difference in littorinid population distribution and differentiation at both low and high spatial scales. Distribution of mangrove trees and seedlings indicated great variation in the zones; however, no variation was noted for saplings. Male littorinids were revealed to be fewer in number than females of the same species in all mangrove zones. Littorinid abundance varied significantly among zones in different mangrove heights (specific levels) and substrates. No significant difference in mangrove basal area was found among seasons and sites; however, there was great variation among zones. There was a significant correlation between littorinid abundance and mangrove abundance and basal area. Males and females of L. glabrata and L. scabra exhibited different population differentiation patterns at both low and high spatial scales. Results of the study suggest that large scale variation might reflect changes in physical factors possibly associated with habitat fragmentation, whereas small scale variations might suggest differential responses of littorinids to prevailing habitafi Conditions in each floristic zone/rocky shore habitats. | en_US |
| dc.identifier.citation | Sallema, R.E.(2008) Population distribution and differentiation of mangrove and rocky shore gastropods (littoraria spp.) in Dar es Salaam, mnazi bay-ruvuma estuary and Inhaca island in Mozambique, Master dissertation, University of Dar es Salaam. Dar es Salaam. | en_US |
| dc.identifier.uri | http://localhost:8080/xmlui/handle/123456789/70 | |
| dc.language.iso | en | en_US |
| dc.publisher | University of Dar es Salaam | en_US |
| dc.subject | mangrove | en_US |
| dc.subject | rocky | en_US |
| dc.subject | gastropods | en_US |
| dc.subject | Mozambique | en_US |
| dc.title | Population distribution and differentiation of mangrove and rocky shore gastropods (littoraria spp.) in Dar es Salaam, mnazi bay-ruvuma estuary and Inhaca island in Mozambique | en_US |
| dc.type | Thesis | en_US |