Browsing by Author "Acquah-Lamptey, D."
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Item Dragonflies (Odonata: Anisoptera) As Tools For Habitat Quality Assessment And Monitoring(Journal of Agricultural and Biodiversity Research Vol. 2, Issue 8, pp178-183, 2013) Acquah-Lamptey, D.; Kyerematen, R.; Owusu, E. ODragonflies have been recommended for habitat quality assessment and monitoring. The University of Ghana, Legon Campus dragonfly fauna was assessed and their conservation status evaluated. The water bodies present were assessed and found to serve as breeding sites of the dragonflies. Twenty six dragonfly species belonging to three families were recorded making up 23.6% of the country’s total dragonfly fauna. Based on these, management strategies were recommended for the area.Item Land Use Type Affects Butterfly Diversity: A Case Study Of The University Of Ghana, Main Campus, Legon(Journal of Biodiversity and Environmental Sciences (JBES) Vol.5, No. 5, p 205-214, 2014) Kyerematen, R.; Akuamoah-Boateng, A.; Acquah-Lamptey, D.; Anderson, R.S.The present study investigates the effects of some climatic factors on insects associated with citrus orchards in two different agro-ecological zones in Ghana. The study showed that, climatic factors affected insects differently in different agro-ecological zones. There was a negative and highly significant (P˂0.01) correlation between insect abundance and rainfall in the Coastal Savannah zone whereas the correlation between mean temperature and insect abundance was negative and significant (P˂0.05) in the Semi-Deciduous Rain Forest zone. Numbers of insect species peaked differently in some months during the study period due to favourable climatic conditions for their reproduction, growth and activities. The month of February was most favourable for the insects in the Semi-Deciduous Rain Forest zone whiles January was most favourable for the Coastal Savannah zone. Similarly, some months were more favourable for pests of citrus in Ghana; January and February for Ceratitis ditissima and Leptoglossus sp. in both agro-ecological zones and, January and February for Achaea sp. in the Semi-Deciduous Rain Forest and Coastal Savannah respectively. The months of October and September were most favourable for Zonocerus variegatus in the Coastal Savannah zone and Semi-deciduous rain forest zone respectively during the study period. Even though the two different agro-ecological zones had common pests, the proportions and peak periods however varied. The differences are crucial with regards to developing integrated pests management strategies to control insect pests of citrus in Ghana.Item Species Composition and Diversity of Insects of the Kogyae Strict Nature Reserve in Ghana(Open Journal of Ecology, 4, 1061-1079, 2014) Kyerematen, R.; Owusu, E.H.; Acquah-Lamptey, D.; Anderson, R.S.; Ntiamoa-Baidu, Y.Kogyae Strict Nature Reserve, the only one in Ghana, was established to promote scientific research,particularly on how nature revitalizes itself after major disasters, and also to check the southward drift of the savannah grassland. This study presents the first comprehensive inventory of species composition and diversity of insects of the Reserve. Insects were surveyed between September 2011 and June 2012 to capture the end of the rainy season, the dry season and the peak of the wet season. Samples were taken from two sites within the Reserve, Dagomba and Oku using various sampling techniques including pitfall traps, malaise traps and sweep nets. Insect communities were characterized in terms of, 1) species richness estimators, 2) species richness, 3) Shannon-Weiner Index of Diversity, 4) Pielou’s evenness and 5) Bray-Curtis similarity. A total of 8147 individuals representing 135 families from 21 orders were recorded. This included 107 species of butterflies from 9 families and 20 species of dragonflies from 3 families. Oku recorded the highest species numbers (S = 63) and richness (d = 12.16) with a high evenness of species (J =0.9377) during the peak of the wet season; and the lowest species numbers (S = 58) and Margalef’s index of (d = 10.14) in January. The highest Shannon diversity index of (H = 3.927) was recorded at Dagomba in January.Item Using Odonates As Markers Of The Environmental Health Of Water And Its Land Related Ecotone(International Journal of Biodiversity and Conservation Vol. 5 Issue 11, pp.761-769, 2013) Acquah-Lamptey, D.; Kyerematen, R.; Owusu, E.O.The study of Odonata communities along wetlands requires the basic understanding of the abundance, distribution and number of species present. As habitat conditions change, they also exhibit changes in their diversity and distribution. Odonata assemblages were surveyed along the Densu River at Atewa Range Forest Reserve (ARFR) and Nsawam in the Eastern Region of Ghana and Weija in the Greater Accra Region of Ghana. Of the 177 species recorded for Ghana, 66 species (43 dragonfly and 23 damselfly species) were sampled along the Densu River. These belonged to eight families of which the Libellulidae dominated. The distribution of species was significantly different between the sites with the most diverse area being ARFR with 47 species. The various environmental variables along the river were recorded and their effects discussed.Item Using Orthoptera and Hymenoptera indicator groups as evidence of degradation in a mining concession (Tarkwa gold mine) in Ghana(International Journal of Tropical Insect Science, 2019-10-30) Kyerematen, R.; Adu-Acheampong, S.; Acquah-Lamptey, D.; Anderson, R.S.One of the most important bioindicators of change in habitat conditions, especially in tropical Africa, is change in insect diversity. In line with that, the dynamics of Orthoptera and Hymenoptera insect orders were studied and used as evidence of change in ecosystem health after a similar study on Lepidopteran groups revealed some level of degradation in the Tarkwa Gold Mine (TGM). Orthopteran and Hymenopteran species assemblages were sampled within the mine and characterised based on family diversity. Transect counts, sweep netting, malaise trapping and flight interception trapping methods were employed to sample abundance and diversity of insect assemblages of the above-mentioned insect orders. Results showed that few species belonging to these two orders were recorded within the mine, although the records were dominated by more aggressive and habitat degradation tolerant members as reported for the Lepidopteran group in a previous study. We conclude that records of diversity of these insect orders in this study shows a reduction in the ecosystem health within TGM. This finding is further proof that there is a general decline in biodiversity within the concession and hence care must be taken to encourage environmentally-friendly mining practices to avoid further degradation. Recommendations are made for environmental management to maintain more natural vegetation to serve as refugia for impacted animals within the concession.