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    Wyświetlanie 1-3 z 3
    Tytuł:
    Tree diversity and management of Village Common Forests in Bandarban
    Autorzy:
    Kamrul, K.I.
    Jashimuddin, J.
    Hossain, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/10013.pdf
    Data publikacji:
    2017
    Wydawca:
    Fundacja na Rzecz Młodych Naukowców
    Tematy:
    tree
    species diversity
    management
    biodiversity
    Village Common Forests
    Bandarban district
    Bangladesh
    Opis:
    Village Common Forests (VCF) are used sustainably for water source conservation, livelihoods and other biomass needs ofethnic communities in the hilly areas of Bangladesh. The current forest degradation rate warrants the importance and potentiality of VCF for sustainable natural resources management. This study was conducted in two VCF of Lama and RumaUpazila at Chimbuk hill range in Bandarban district to explore the indigenous management techniques and tree species diversity. To identify tree species diversity, eighteen plots (9 plots from each VCF) were selected at different hill position (top, middle and bottom) by stratified random sampling method with the dimension of 20m×20m per plot. Shiner-winner and Simpson index were used to calculate the tree species diversity. According to the analyses, it was found that diversity was higher in top of the hill, but species density (stem/ha) was higher in the valley. It was also found that 23000 seedlings/ha regenerated naturally and among the 31 identified families, Moraceae was dominant where the density was 354 stems/ha with basal area 52.63 m2/ha. The dominant species were Schleicher oleosaand Anisopterascaphula and important non-timber species were Melocannabaccifera and Calamusgurubagrowing abundantly in the study areas. It was observed that the VCF were managed by ethnic Mro community with two different committees (customary and executive) who made some rules for natural forest conservation. This management practice is not only conserving hill forests, but also helping to improve degraded forest and create new habitats for biodiversity in the study area.
    Źródło:
    Environment, Earth and Ecology; 2017, 1, 2
    2543-9774
    2451-4225
    Pojawia się w:
    Environment, Earth and Ecology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Implication of forest zonation on tree species composition, diversity and structure in Mabira Forest, Uganda
    Autorzy:
    Weldemariam, E.C.
    Jakisa, E.S.
    Ahebwe, D.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/9997.pdf
    Data publikacji:
    2017
    Wydawca:
    Fundacja na Rzecz Młodych Naukowców
    Tematy:
    forest zonation
    management zone
    tree
    woody species
    plant species
    species composition
    species diversity
    species structure
    Mabira Forest Reserve
    Uganda
    Opis:
    The study aimed to investigate effectiveness of forest management zoning in conserving biodiversity of Mabira forest reserve. The study sites buffer, production, and strict nature reserve management zones were purposively selected. This was undertaken through investigating woody species diversity, composition and structure. A total of 60 sampling plots with a size of 20 m x10 m were used to collect vegetation data. Variables such as woody plant species identification and counts as well as diameter at breast height (DBH) of trees were done. The result depicted a total of 65 woody species; 39 in buffer, 19 in productions and 37 in strict nature reserve. Of these, only 9 trees species were found common to all zones and their Sorensen similarity coefficient was 0.2213. The population structure of the buffer and strict nature reserve zones was found to be a J - shape pattern, whereas the production zone shown an inverted J-shape pattern. Higher woody species diversity was depicted in the buffer and strict nature zones with (H’=2. 73512) and (H’=2. 68412) respectively, and lower in a production zone (H’=1. 63628). The evenness index value of a buffer zone was (J =0. 746574), strict nature (J= 0.743335) and production (J=0. 555719). The production zone had shown higher IVI values followed by buffer and strict nature reserve zone. The most important woody species identified based on their IVI value were Broussonetia papyrifera (Production), Acalypha neptunica (Buffer), Funtumia Elastica (strict nature reserve). The existing forest management is effective in conserving the biodiversity of the forest reserve. Nevertheless, the production zone was still suffering from exploitation of the surrounding community, hence serve for protecting the remaining management zones from further human interference. Further investigation is also required on the adjacent community perceptions of the forest management zoning.
    Źródło:
    Environment, Earth and Ecology; 2017, 1, 1
    2543-9774
    2451-4225
    Pojawia się w:
    Environment, Earth and Ecology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Helminth endo-parasites of amphibians from Greame Ama, Okrika, Rivers State, Nigeria
    Autorzy:
    Amuzie, C.C.
    Robert, B.
    Ekerette, I.B.
    Powiązania:
    https://bibliotekanauki.pl/articles/2049688.pdf
    Data publikacji:
    2020
    Wydawca:
    Fundacja na Rzecz Młodych Naukowców
    Tematy:
    helminth parasite
    marine environment
    parasite species
    new parasite
    endoparasite
    Nigeria
    amphibian diversity
    Helminth parasites
    Okrika
    Opis:
    There is only one survey on the species of amphibians and their parasites from Okrika, Rivers State, Nigeria. Therefore, this research was carried out with the intention of exploring the city for more amphibian species and also reporting on the parasites infecting them. Visual acoustic and survey methods were employed in surveying the study location, Greame Ama, for the period of September to November, 2018, and standard parasitological techniques were adopted. In comparison with the earlier research, fewer amphibian species were encountered: Sclerophrys maculata, Hoplobatrachus occipitalis, Ptychadena pumilio and P. mascareniensis. However, new parasite species were found: Diplodiscus fischthalicus, Metahaematoloechus exoterorchis and Cephalochlamys compactus. A higher prevalence of infection (96.6%) was reported here than in the earlier report. Of the nine parasite species reported in this research, three have direct transmission routes (Rhabdias sp., Cosmocerca ornata, Cylindrotaenia jaegerskioeldii), while six (Raillietiella sp., Cephalochlamys compactus, Mesocoelium monodi, D. fischthalicus, Metahaematoloechus exoterorchis and ascaridida larva) are transmitted by ingestion of either insect or gastropod intermediate hosts. However, the most prevalent species were those with direct transmission routes as is common with more terrestrial amphibian species. It is concluded that amphibian diversity in Okrika is low but more parasite species are likely to be reported with more surveys.
    Źródło:
    Environment, Earth and Ecology; 2020, 4, 1; 31-37
    2543-9774
    2451-4225
    Pojawia się w:
    Environment, Earth and Ecology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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