Browsing by Author "Mahulu, A."

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    Challenges and opportunities for restoring the threatened mangroves
    (2015) Ngongolo, K.; Mtoka, S.; Mahulu, A.
    Restoration of mangrove forests has to be a continuous process. It is important to reverse the loss of mangrove ecosystem worldwide by using various approaches as this ecosystem provides important ecosystem services such as habitat for organisms, recycling of nutrients, controlling floods, trapping sediments, erosion barriers and so much more. This paper addresses issues associated with the ongoing degradation of mangroves, objectives, opportunities well as challenges for mangroves restoration. As far as the restoration of mangroves is concern, it is emphasized to conserve mangrove forest so as to continue benefiting from them. Special emphasis is placed in coordinating efforts between natural and social sciences. However, it should also be noted that, restoring mangroves is only a partial solution, protection and conservation of those important remaining ecosystems, must be a campaign for all nations before too much is lost.
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    Floral visitors of the Ageratum conyzoides in Amani Nature Reserve, Tanzania
    (International Society for Development and Sustainability (ISDS), Japan, 2014) Ngongolo, K.; Mtoka, S.; Mafuwe, K.; Mahulu, A.
    Several studies have shown that Ageratum conyzoides (A. conyzoides) is of beneficial to man in terms of medicine and food, however the floral visitors of this species which are anticipated to be potential pollinators were not known in Amani Nature Reserve. This study aimed at determining the floral visitors and potential pollinators of the species. The individuals observed to probe the flowers were considered potential pollinators, field observation to the flowers at specified time interval was used to determine the floral visitors and time spent. There was no difference between the floral visitors and individual probed and relationship between the visitation and probing with time spent were positive related. This concluded that, the majority of the visitors to A. conyzoides were potential pollinators, and rewards like nectar and pollen attracted them. In this case, conservation of the nature reserve is essential with consideration of the pollinators as essential components for the reproductive success of A. conyzoides.