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Journal of Insects | 2014

Insect Diversity of the Muni-Pomadze Ramsar Site: An Important Site for Biodiversity Conservation in Ghana

Rosina Kyerematen; Daniel Acquah-Lamptey; Erasmus H. Owusu; Roger Sigismund Anderson; Yaa Ntiamoa-Baidu

An inventory of species diversity of insects of the Muni-Pomadze Ramsar site, with special reference to species of conservation concern, was carried out as part of an evaluation of changes in the ecological character of the site, twenty years after designation. Samples were taken from two protected areas within the Ramsar site, in the wet (July), dry (January), and intermediate (June) seasons. Community diversity was characterized in terms of number of species accumulated, species richness, Shannon-Weiner indices of diversity, Pielou’s evenness, and Bray-Curtis similarity. A total of 134 families from 19 insect orders were recorded during the entire study period. Yenku Block A recorded the highest species richness (98) and the highest diversity index (14.97), corroborated by the highest Margalef index of 3.82 with a relatively even distribution of species (0.834) during the intermediate season, and recorded the lowest diversity (6.957) and species richness (41) during the dry season. On the whole, the Muni-Pomadzi Ramsar site showed a high diversity of insect species. The presence of species such as Junonia oenone and Papilio demodocus which are specialized in degraded habitats at Yenku Block A in large numbers is a clear indication of degradation of the forest, but the presence of forest species such as Salamis anacardii and Euphaedra crokeri is an indication that some parts of this reserve are still in good shape. A comparison of the butterfly species recorded with findings in a 1997 survey showed a marked increase in numbers from 75 to 130; this may be attributed to the habitat changes that have taken place at the site offering more diverse habitat types.


Tijdschrift voor Entomologie | 2000

A Review of Afrotropical Rheotanytarsus Thienemann Et Bause, 1913 (Diptera: Chironomidae)

Rosina Kyerematen; Ole A. Sæther

Africa have been mostly limited to standing waters and large rivers. The benthic fauna of the Volta Lake was studied by Petr (1969), of Lake Bosomtwe in Ghana by Whyte (1975), Kariba Lake in Nigeria by McLachlan (1965, 1969), and Lake Chad by Dejoux (1968) and Hopson (1967). Some chironomid records from various parts of Ghana can be found in Amakye (1993). Thomas (1966) recorded 17 species of chironomids from a small man-made lake, Petr (1970) reported 52 species of chironomids from the Volta Lake, while Whyte (1971) studied the ecology of chironomids in a small tropical man-made lake, the Danfa reservoir and recorded 69 species. The chironomid larvae collected by Hynes (1972) were identified only to the subfamily level. Whyte (1980) in his studies from all over Ghana recorded 34 species of chironomids. According to Amakye (1993) 87 species in 31 genera belonging to 3 subfamilies had been recorded from Ghana by 1993. The subfamilies were represented by 12 species (14%) of Tanypodinae, 6 species (7%) of Orthocladiinae and 69 species (79%) of Chironominae. Up till now little has been published on the Afrotropical species of Rheotanytarsus (Dejoux 1973; Freeman 1954, 1955, 1958; Kieffer 1918; Lehmann 1979). Only seven species have previously been described from the Afrotropical region, namely Rheotanytarsus angustus (Freeman 1955) comb. n.; Rheotanytarsus ceratophylli (Dejoux 1973); R. fuscus (Freeman 1954), R. guineensis Kieffer, 1918; R. montanus Lehmann, 1979; R. ororus Lehmann, 1979; and R. samaki Lehmann, 1979. None of these have previously been recorded from Ghana. Several new species were found in Ghana during the collection done in connection with the Norwegian University Committee for Development, Research and Education (NUFU) project in Ghana. Other new


Zoology | 2013

Diversity and Abundance of Butterfly Species in the Abiriw and Odumante Sacred Groves in the Eastern Region of Ghana

Rosina Kyerematen; D. Obeng-Ofori

Sacred groves in Ghana have been adopted as one of the strategies to mitigate the loss of biodiversity. They are seriously under threat from anthropogenic activities. A six month survey of the butterfly fauna in the Abiriw and Odu mante sacred groves in the Akwapim North and South Districts, respectively of the Eastern Region of Ghana was conducted to characterize resident butterfly species diversity and abundance. The transect count method and charaxes traps were used to sample the butterflies. Analysis of butterfly diversity in these groves, which range in size fro m 400 m 2 to 250 m 2 , was used to evaluate their effectiveness in achieving conservation objectives. Co mmun ity diversity was characterized in terms of, (a) number of species accumulated versus sampling effort, (b) nonparametric richness estimates, (c) Simpsons and Shannon-Weiner Indices of Diversity, and (d) Co mplementarity of co mmunit ies. A total of 1169 ind ividual butterflies were trapped across all sites representing 89 species from 10 families. Butterfly species richness and evenness in the Abiriw g rove was higher than that of the Odumante grove, however, the Abiriw grove harboured a resident community that was not distinctive from the Odu mante grove. These findings add to the body of knowledge that indicates that large groves are the foundation of successful conservation programs. Nonetheless, it was observed that both groves harbour a number of species that appear vulnerable to dynamics of fo rest frag mentation based on changes in their relative abundance across sites. The findings are discussed in the context of potential indicator species and theoretical predictions of at-risk species.


International Journal of Biodiversity and Conservation | 2015

Seasonal changes in small mammal assemblage in Kogyae Strict Nature Reserve, Ghana

Benjamin Y. Ofori; Daniel K. Attuquayefio; Erasmus H. Owusu; Rosina Kyerematen; Jones K. Quartey; Yaa Ntiamoa-Baidu

The small mammal community at Kogyae Strict Nature Reserve (KSNR) in the Ashanti Region of Ghana were studied in two habitats during the wet and dry seasons to investigate seasonal changes in species richness, abundance, composition and diversity. Ninety-six individuals belonging to nine species were recorded in 720 trap-nights, giving overall trap-success of 13.33%. Species richness (Sr), trap-success (Ts) and relative abundance (Ra) were higher (Sr = 6 species; Ts = 23.1%; Ra = 86.5%) in wooded grassland than forest (Ra = 4 species; Ts = 3.6%; Ra = 13.5%). However, species diversity was higher (Shannon-Wiener index Hʹ = 1.157) in forest than in wooded grassland (Hʹ = 1.089). Mastomys erythroleucus dominated in wooded grassland (68%) and Hylomyscus alleni in forest (53.8%). The species composition was unique for both habitats, with Mus musculoides being the only species common to both habitats. Seasonal changes in community assemblages were evident in both habitats, with species richness, diversity and abundance of the dominant species being highest in the wet seasons. Sex-ratio was unity in both habitats, and remained fairly constant throughout the rainy and dry seasons. Breeding activity was evident all-year-round for most species, but peaked in the rainy season. Our findings are consistent with that of other studies in Ghana and elsewhere in the African subregion, highlighting the importance of rainfall to the ecology of tropical small mammals.


Tijdschrift voor Entomologie | 2001

Towards Phylogeny and Zoogography of the Genus Rheotanytarsus Thienemann Et Bause, 1913 (Diptera: Chironomidae)

Ole A. Sæther; Rosina Kyerematen


Archive | 2013

Using odonates as markers of the environmental health of water and its land related ecotone

D. Acquah; Rosina Kyerematen; E. O. Owusu


Spixiana | 2000

A review of Oriental Rheotanytarsus Thienemann & Bause, with descriptions of some new species

Rosina Kyerematen; Trond Andersen; Ole A. Sæther


Archive | 2012

Insect diversity and succession pattern on different carrion types

Rosina Kyerematen; Bernard A. Boateng; Emmanuel Twumasi


Open Journal of Ecology | 2014

Species Composition and Diversity of Insects of the Kogyae Strict Nature Reserve in Ghana

Rosina Kyerematen; Erasmus H. Owusu; Daniel Acquah-Lamptey; Roger Sigismund Anderson; Yaa Ntiamoa-Baidu


Archive | 2013

Foraging Activities, Success and Efficiency of Cattle Egrets (Bubulcus ibis) in Three Habitat Types in the Greater Accra Region of Ghana

A Kuranchie; Rosina Kyerematen; D.K Attuquayefio; L.H Holbech

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