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This study aimed at assessing the characteristics of water hyacinth biomass in Lake Tana. Explanatory research design was used based on biomass samples and satellite images acquired along with field observation and literature reviews. The results showed that high amount of N and P nutrients, shallow nature of the Lake and suitable climatic conditions of the area are the causes for the weeds' proliferation. The mean NDVI values were -0.542 to 0.828 and -0.628 to 0.877 in the dry and wet seasons, respectively. The spatial distribution of the weed was 2126.9 ha and 592.4 ha during the wet and dry seasons. The weed has recorded a mean leaf length of 9.3 cm, petiole length of 28.1 cm, root shoot ratio of 3.3, leaf blade area of 55.6 cm² and leaf area index of 11343.9 cm². In addition, a mean of 10.9 leaves per plant and 18.6 plants per 0.25m² was found. Furthermore, the biomass analysis revealed 1,990,787.8 tons of wet and 554,523.8 tons of dry water hyacinth biomass can be harvested from the Lake per year. Stakeholders shall work on control of water hyacinth biomass as a short-term measure and reduction of nutrient inflow into the Lake as a long-term measure. [ABSTRACT FROM AUTHOR]

Rural households in Ethiopia are characterized by subsistence agriculture, while empirical evidence reveals that rural livelihoods are limited. The aim of this study was to assess the rural livelihoods diversification with evidence of households surrounding Lake Tana. Data was collected using a survey from 413 households. The results of the study revealed that the mean overall asset score of the households was 0.313. Crop production, livestock rearing and employment were the major livelihood strategies. The households practiced a mean of three livelihood strategies, and the evenness score of the households was 0.18 referring to the dominance of small livelihood strategies. The mean annual income of the households was 26,696 ETB which was found to have a strong positive correlation with the asset possession of the households (r = 0.56). In addition, the Simpson diversification index result showed that 46.3%, 43.8% and 9.9% of households were low, medium and high-income diversifiers, respectively. Diversification groups have shown a significant difference in asset holdings but not in the income of the households. Moreover, significant variations were observed between Tana Zuria Rice and Tana Zuria livelihood zone households in asset, number of strategies, income and diversification status. The study concludes that the asset ownership of the households is limited. Development of rural livelihood assets is recommended to improve rural livelihoods and, as a result, household income. [ABSTRACT FROM AUTHOR]