Evaluation of Seagrass and Seaweed Species Diversity, Abundance, and Human Activities Endangering their Existence at Indian Ocean Shore at Kigamboni in Dar es Salaam City, Coastal Zone of Tanzania
An evaluation of seagrass and seaweed species diversity, abundance, and the human activities endangering their existence were conducted at the Kigamboni Indian ocean shore in Dar es Salaam city. The study aimed to determine the abundance, diversity of seagrasses and seaweeds and to identify human activities undertaken in the study area. A transect was set within the study area where plots of 10 m x 10 m (100 m2) were established at an interval of 100m. The encountered seagrass and seaweed species were identified for their scientific names to species level and whenever it was not possible, a specimen was collected and taken to the University of Dar es Salaam Herbarium (DSM) for identification. The species were also counted and recorded as per their number of stems. H’ was applied to calculate the Shannon Wiener Index of Diversity. Also, relative abundance (RA) was calculated. A total of 17 species from 14 genera were identified. The calculated H’ was 2.0309, an implication of high seagrass and seaweed species diversity. The identified human activities were fishing and swimming. Of those activities, bait collection (33.89%) was the most dominant while swimming had 33.33%, fishing had 16.67% and marine gravel had 11.11%. Kigamboni ocean shore comprises of high species diversity of seagrass and seaweed species, facing severe damage from human disturbances. This study recommends for sustainable management of the ocean shore through education, protection strategy to ensure the survival of the existing seagrasses and seaweed species.
Abubakari L U and MutieA M 2011Microalgae Species Biodiversity and Abundance and their Potential for Biofuel in Kenya.Journal of Limnology &Oceanographypp2-15.
Bolton, J. J., Oyieke, H. A., & Gwada, P. (2007). The seaweeds of Kenya: checklist, history of seaweed study, coastal environment, and analysis of seaweed diversity and biogeography. South African journal of botany, 73(1), 76-88.
De la Torre-Castro, M. (2006). Humans and seagrasses in East Africa: a social-ecological systems approach. Doctoral dissertation. Institutionen för systemekologi.
De la Torre-Castro, M. & Rönnbäck, M. (2004). Between humans and seagrasses-an example from tropical East. African Ocean and Coastal Management, 47, 361-387.
Frohlich, J., Niedermeier, W. and Luginsland, H.-D. (2005) The Effect of Filler-Filler and Filler-Elastomer Interaction on Rubber Reinforcement. Composites: Part A, 36, 449-460.
Gersun, L. (2014). The abundance and diversity patterns of seaweed communities on natural and artificial substrata at Sodwana Bay, South Africa. Doctoral dissertation. The University of Cape Town.
Guiry, M. D. (2014). The seaweed site: information on marine algae. Retrieved from Seaweed, available at http://www.seaweed.ie.
Gullström, M., de la Torre Castro, M., Bandeira, S. O., Björk, M., Dahlberg, M., Kautsky, N., ... & Öhman, M. C. (2002). Seagrass ecosystems in the western Indian Ocean. AMBIO: a Journal of the Human Environment, 31(7), 588-596.
Hemminga, M. A., & Duarte, C. M. (2000). Seagrass ecology. Cambridge University Press.
Kothari, C. R. (2004). Research Methodology. Methods and Techniques, Second Edition. New Delhi: New Age International Publishers.
Llewellyn, C. A., & Airs, R. L. (2010). Distribution and abundance of MAAs in 33 species of microalgae across 13 classes. Marine drugs, 8(4), 1273-1291.
Lubke, R., & De Moor, I. J. (Eds.). (1998). Field guide to the Eastern & Southern Cape coasts. Rondebosch, SA: University of Cape Town Press.
Lyimo, T. J., Mvungi, E. F., Lugomela, C., & Björk, M. (2006). Seagrass biomass and productivity in Seaweed and Non-Seaweed Farming areas in the East Coast of Zanzibar. Western Indian Ocean Journal of Marine Science, 5(2), 141-152.
McHugh, D. J. (2003). A guide to the seaweeds industry. FAO Fisheries Technical Paper 441. Rome: Food and Agriculture Organization of the United Nations.
Mhagama, H. (2016). Five Districts of Dar es Salaam. The United Republic of Tanzania.
Obuid-Allah, A. H., El-Wakeil, K. F. A., El-Shimy, N. A., Mohamoud, M. A. & Omer, M. Y. (2015). Impacts of Construction of the New Assiut Barrages on Zooplankton Community Structure Inhabiting Nile River at Assiut Egypt. International Journal of Advanced Research, 3(9) 588-598.
Ochieng, C. A., & Erftemeijer, P. L. A. (2003). The seagrasses of Kenya And Tanzania. World Atlas of Seagrasses, 82-92.
Oliveira, E. C. D., Österlund, K., & Mtolera, M. S. (2005). Marine plants of Tanzania: A field guide to the seaweeds and seagrasses. Sida/Department for Research Cooperation, SAREC
Peterson, T. C. & Vose, R. S. (2016). Maps and Time Series Temperature and Precipitation Maps Global Climate Report. National Centre for Environmental Information.
Reynolds, P.L. (2018). Seagrass and seagrass beds. https://ocean.si.edu/ocean-leaf/plants-algae/seagrass-and-seagrass-beds; accessed on 9th June 2020.
Richmond, M. D. (1995). A Field Guide to the Seashores of Eastern Africa. Ambio, 24(7/8), 522-525.
Richmond, M. D. (2002). A Field Guide to the Seashores of Eastern Africa and the Western Indian Ocean Islands, 2nd edition. Sida.
Roldan, B. A., Suerte, J. S., Lee, F. D. V., Baello, J. A. V., & Javier, S. N. (2016,). Identification
and distribution of Talitridean amphipod species found on the inland islands of Lake Taal, Philippines. In 51st BIOTA Annual National Convention and Scientific Sessions
Sambamurty, A. V. S. S. (2005). A textbook of algae. IK International Pvt. Limited.
Shannon, C. E. & Wiener, W. (1949). The Mathematical Theory of Communication. University of Illinois Press. The United States of America.
Tiorve, E., Kunu, E., Polce, C. & Tiorve, K.M. (2008). Species area relationship: Separating the effect of species abundance and spatial distribution. Journal of Ecology. 96: 1141-1151.
United Nations Development Programme (UNDP). (2014). Seagrasses of the world. Biodiversity environment. United Nations Environment Programme (UNEP).
Wafar, M., Venkataraman, K., Ingole, B., Khan, S. A., & LokaBharathi, P. (2011). State of knowledge of coastal and marine biodiversity of Indian Ocean countries. PLoS One, 6(1).
Watson, R. A., Coles, R. G., & Long, W. L. (1993). Simulation estimates of annual yield and landed value for commercial penaeid prawns from a tropical seagrass habitat, northern Queensland, Australia. Marine and Freshwater Research, 44(1), 211-219.
Wiencke, C., Clayton, M. N., Gómez, I., Iken, K., Lüder, U. H., Amsler, C. D., ... & Dunton, K. (2007). Life strategy, ecophysiology and ecology of seaweeds in polar waters. Reviews in Environmental Science and Bio/Technology, 6(1-3), 95-126.
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