Fredrick Ojija

Fredrick Ojija
Mbeya University of Science and Technology | MUST · Applied Sciences

PhD

About

31
Publications
36,311
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97
Citations
Introduction
Fredrick Ojija has expertise in Biodiversity and Ecosystems Management, Ecology, Biological Invasions, Plant-Plant Interactions, Insect-Plant Interaction, Pollinator-Monitoring, Ecological Restoration, Climate Change Adaptation and Mitigation. His research interests lie in the field of Biodiversity and Ecosystem Conservation, and Management of Invasive Alien Plants. https://orcid.org/0000-0002-1117-5119; https://scholar.google.com/citations?hl=en&user=xSwLR7wAAAAJ

Publications

Publications (31)
Article
On the Ground •The exotic invasive plant Parthenium hysterophorus is invading rangelands in Africa while causing negative effects on the biodiversity, environment, economy, and human and animal health because eco-friendly control methods are lacking. •We conducted experiments to investigate the suppressive effects of forage legume plant species; D...
Article
Full-text available
An increase of biological invasion in developing countries is threatening smallholder's livelihoods, biodiversity conservation, agroecosystems and rangeland productivity. In Tanzania, the exotic invasive plant Parthenium hysterophorus, which is rapidly spreading in Arusha region, threatens wildlife conservation, human well-being and food security i...
Article
Full-text available
The alien invasive plant Parthenium hysterophorus (Asteraceae) has been reported to impend smallholder farmers’ livelihood, and biodiversity conservation in sub-Saharan Africa. While earlier studies reported that the invasion may be supressed if plant density in invaded habitats is sufficiently maintained, only a few quantitative experiments on com...
Article
In sub-Saharan Africa, Tanzania is one of the countries of global significance for biodiversity conservation. However, some plants in Tanzania, including Aloe species, are critically endangered. Tanzanian critically endangered aloes have generally limited distribution ranges and are represented by very small populations in the wild. Knowledge about...
Article
Full-text available
The Mount Rungwe Nature Reserve in Tanzania is a significant ecological area that protects the endangered Rungwecebus kipunji. The goal of the study was to analyze the ecological habitat and population of R. kipunji in Mount Rungwe Nature Reserve. During our study, we recorded 412 (mean: 41.2 ± S.E: 5.7) R. kipunji individuals in the reserve. The R...
Article
The Mbeya range forest reserves (MRFRs) of the southern highland of Tanzania are an important hotspot for biodiversity conservation. However, its avian biodiversity has hardly ever been studied. Thus, for the first time, this study presents the inventory of bird species from MRFRs, demonstrating community structure, functional group, and conservati...
Article
Full-text available
The ecosystem integrity of the Simanjiro Maasai steppe rangeland in Tanzania is threatened by the invasive plant Ipomoea hildebrandtii Vatke. However, its invasion status, impact and control techniques are unclear in the country. We conducted a study in Terrat and Sukuro villages in Simanjro District, Tanzania, to assess its invasion status and imp...
Conference Paper
Full-text available
Increasingly, invasions of Parthenium hysterophorus in East Africa threaten biodiversity conservation and smallholder livelihoods. In Tanzania, particularly in the Arusha region, P. hysterophorus is threatening to encroach into the Arusha National Park (ANAPA) and to date, little research has been done on an effective, environmental-friendly manage...
Article
Full-text available
The exotic plant Parthenium hysterophorus is rapidly invading ecosystems in sub-Saharan Africa, with negative effects on the environment, economy and human and animal health. With the exception of some synthetic herbicides, none of the available management methods have been effective against P. hysterophorus, and carry risks to the environment. The...
Article
Full-text available
The exotic invasive plant Parthenium hysterophorus is invading many tropical habitats. While much work has been done on its interactions with other native plants, little is known about its interaction with insect floral visitors and how it impacts pre-existing pollination networks when it invades a site. We carried out surveys on sites with and wit...
Presentation
Full-text available
National Scientific Conference on Pests and Pesticides Management in Arusha, Tanzania, 27th – 29th March, 2019
Article
We report the result from habitat and Artisornis moreaui bird population survey conducted in Nilo Forest Nature Reserve in Tanzania. About 42 individuals and 18 heard of A. moreaui in 22 territories were observed in established transects. It was learnt that A. moreaui prefers vines, lianas and climbers nearby Ocotea usambarensis. A survey conducted...
Article
Full-text available
Abstract This study assessed the impact of anthropogenic activities on the abundance, diversity and composition of insect species on Mt. Loleza forest reserve in Mbeya, Tanzania. Insects were collected in disturbed, less disturbed and undisturbed habitats using pitfall traps, sweep nets and beating sheets. Data were analysed using one way analysis...
Article
Full-text available
The impact of climate change in Tanzania is dynamic and differs among regions as they are impacted in different ways. While other regions experience normal rainfall and temperature patterns, others have continued to experience temperature extremes, severe droughts, decline in crops production coupled with food insecurity, extreme weather episodes o...
Presentation
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Climate Change, Paleoclimate
Presentation
Full-text available
Genomics, genome assembly, genome polymorphisms, and Protein-DNA interaction
Presentation
Full-text available
COASTAL AREA: MANGROVE ECOSYSTEM
Presentation
Full-text available
Opium poppy (Papaver somniferum), Madagascan periwinkle (Catharanthus roseus)
Article
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This study attempts to use biological indices such as Biological Monitoring Working Party (BMWP), Average Score Per Taxa (ASPT) and Hilsenhoff Family Biotic Index (FBI) in order to determine the ecosystem health and water quality of Nzovwe stream in Mbeya, Tanzania. Macroinvertebrates were sampled from Nzovwe stream using semi-quantitative techniqu...
Article
Full-text available
The present study is the first to be conducted to examine the community structure and diversity of beetles occupying areas of Ikuti ward in Mbeya, Tanzania, as well as to investigate the efficiency of different trapping methods in capturing different beetles using habitats of Mbeya University of Science and Technology as study sites. The survey was...
Article
Full-text available
Despite the high abundance of arthropods in many terrestrial environments, our understanding of their ecological diversity and abundance remain unknown in some habitats. The aim of this study is to assess the abundance, diversity and species richness of some arthropods found in grassland and woodland habitats at Mbeya University of Science and Tech...
Article
Full-text available
Insect fauna are found almost everywhere.Yet, their abundance and diversity in some terrestrial ecosystems is still undisclosed. The present study was conducted to assess and compare the abundance, species richness and diversity of insects from grassland and woodland communities at Mbeya University of Science and Technology in Mbeya, Tanzania. A to...
Article
Full-text available
This study was done in Belgium (North Sea, Middelkerre-Oostende) as part of excursion in 2013. The objective was to compare the fishes’ body weight (W), length (L), biomass and total catch of the two gears (otter and beam trawl) used to collect the fishes. The relationship between total length (L) in cm and total weight (W) in kg for all fish speci...
Article
Full-text available
This study was carried out to assess the water quality of Nzovwe stream using macroinvertebrates as bioindicators. Biological monitoring working party (BMWP) scoring system was the index used to assess the ecosystem health of Nzovwe stream. A total of 584 aquatic macroinvertebrates were identified from Nzovwe stream. They belonged to 22 families. T...
Article
Full-text available
The purpose of this current study was to determine the diversity, species richness, dominance and evenness of macroinvertebrates fauna found in Nzovwe stream. The study was carried out from 02 November to 28 December 2015. A total of 584 aquatic macroinvertebrate from 7 orders and 16 species were recoded. They belonged to 22 families. This study sh...
Article
Full-text available
This paper presents analyzed physico-chemical parameters and assessed ecosystem services of Nzovwe stream. Physico-chemical parameters were analyzed using methods and procedures as prescribed by American Public Health Association and Tanzania Bureau of Standards. Whereas, ecosystem services were assessed qualitatively using households survey questi...
Article
Full-text available
It was found that habitat types and age may influence diurnal activities of cattle egrets. In average, the grassland comprised 41.59% of all of diurnal activities, while forest and bushland comprised 21.54% and 35.79% of all of diurnal activities respectively (P<0.05). Variation in the performance of diurnal activities overtimes of the day differed...
Article
Full-text available
A climate change mitigation mechanism, Reducing Emission from Deforestation and forest Degradation (REDD+) is anticipated to affect livelihoods of forest dependent communities. This study was conducted to establish this impact on livelihoods of local people in Rungwe District, Tanzania. Data were collected through questionnaires, group discussions,...

Questions

Questions (8)
Question
Pictures were taken in Mbeya, Tanzania
Question
These insects were collected as insect-visiting flowers at Mikuuni and Tengeru sites in Arusha, Tanzania.
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It is from Arusha, Tanzania
Question
I saw it around Arusha (at Karangai site), Tanzania. It was dominant both in dry and moderate wet areas.  
Question
These species were collected from Loleza Mountain forest in Mbeya, Tanzania. 
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Insect from Loleza mountain in Mbeya 
Question
this insect was corrected from Loleza Mountain in Mbeya, Tanzania

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Projects

Projects (4)
Project
The primary goal of the project is to support conservation of four critically endangered Aloe species (CEAs) i.e. Aloe boscawenii, Aloe dorotheae, Aloe flexilifolia, and Aloe leptosiphoni through community capacity building i.e. raising conservation education awareness in Tanga region (-5.3042 S, 38.3175 E), and establishment of Aloes botanical garden at Mbeya University of Science and Technology (MUST) in Mbeya region (-8.9417 S, 33.4161 E) of Tanzania
Project
This project aims to investigate the extinction risk and population of kipunji, raise kipunji conservation awareness and identify priority areas for conservation to reduce the species extinction risk.
Project
i. To quantify the abundance, diversity, and species of bee–pollinators in the SHRT ii. To assess interactions of bee–pollinators with plants in different land use habitats in SHRT iii. To assess and identify vulnerable, threatened, or endangered bee species in SHRT iv. To assess the knowledge and perception of local people about bee-pollinator conservation