scholarly journals Spatial coverage of Water Hyacinth (Eichhornia Crassipes (Mart.) Solms) on Lake Tana and associated water loss

Heliyon ◽  
2021 ◽  
pp. e08196
Author(s):  
Yilebes Addisu Damtie ◽  
Daniel Ayalew ◽  
Derege Tsgaye Meshesha
Keyword(s):  
Water Loss ◽  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Lake Tana ◽  
Spatial Coverage

scholarly journals Spatiotemporal Dynamics and Environmental Controlling Factors of the Lake Tana Water Hyacinth in Ethiopia

2020 ◽  
Vol 12 (17) ◽  
pp. 2706
Author(s):  
Abeyou W. Worqlul ◽  
Essayas K. Ayana ◽  
Yihun T. Dile ◽  
Mamaru A. Moges ◽  
Minychl G. Dersseh ◽  
...  
Keyword(s):  
Water Level ◽  
Air Temperature ◽  
Best Management Practices ◽  
Water Hyacinth ◽  
Lake Level ◽  
Management Practices ◽  
Satellite Image ◽  
Spatiotemporal Dynamics ◽  
Lake Tana ◽  
Spatial Coverage

The largest freshwater lake in Ethiopia, Lake Tana, has faced ecological disaster due to water hyacinth (Eichhornia crassipes) infestation. The water hyacinth is a threat not only to the ecology but also to the socioeconomic development of the region and cultural value of the lake, which is registered as a UNESCO reserve. This study aims to map the spatiotemporal dynamics of the water hyacinth using high-resolution PlanetScope satellite images and assesses the major environmental variables that relate to the weed spatial coverage dynamics for the period August 2017 to July 2018. The plausible environmental factors studied affecting the weed dynamics include lake level, water and air temperature, and turbidity. Water temperature and turbidity were estimated from the moderate resolution imaging spectroradiometer (MODIS) satellite image and the water level was estimated using Jason-1 altimetry data while the air temperature was obtained from the nearby meteorological station at Bahir Dar station. The results indicated that water hyacinth coverage was increasing at a rate of 14 ha/day from August to November of 2017. On the other hand, the coverage reduced at a rate of 6 ha/day from December 2017 to June 2018. However, the length of shoreline infestation increased significantly from 4.3 km in August 2017 to 23.4 km in April 2018. Lake level and night-time water temperatures were strongly correlated with water hyacinth spatial coverage (p < 0.05). A drop in the lake water level resulted in a considerable reduction of the infested area, which is also related to decreasing nutrient levels in the water. The water hyacinth expansion dynamics could be altered by treating the nutrient-rich runoff with best management practices along the wetland and in the lake watershed landscape.

Detecting Spatiotemporal Expansion of Water Hyacinth (Eichhornia crassipes) in Lake Tana, Northern Ethiopia

2020 ◽  
Vol 48 (5) ◽  
pp. 751-764
Author(s):  
Tewachew Asmare ◽  
Biadgilgn Demissie ◽  
Amare Gebremedhin Nigusse ◽  
Abraha GebreKidan
Keyword(s):  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Northern Ethiopia ◽  
Lake Tana

scholarly journals Identification of impacts, some biology of water hyacinth (Eichhornia crassipes) and its management options in Lake Tana, Ethiopia

2017 ◽  
Vol 5 (1) ◽  
pp. 8-15 ◽  
Author(s):  
Dereje Tewabe ◽  
◽  
Erkie Asmare ◽  
Wondie Zelalem ◽  
Brehan Mohamed ◽  
...  
Keyword(s):  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Management Options ◽  
Lake Tana

Study of The Pharmacological Activity and Heavy Metal Content of Eichhornia Crassipes Extract

2019 ◽  
Vol 2 (2) ◽  
pp. 91-95 ◽  
Author(s):  
Jimmy Jimmy ◽  
Diah Indriani Widiputri ◽  
Paulus Gunawan
Keyword(s):  
Heavy Metal ◽  
Pharmacological Activity ◽  
Water Hyacinth ◽  
Metal Content ◽  
Eichhornia Crassipes ◽  
High Light Intensity ◽  
Milling Process ◽  
Heavy Metal Content ◽  
Solvent Ratio ◽  
Negative Impacts

Eichhornia crassipes is well-known as water hyacinth. Water hyacinth grows rapidly in the nutrient-rich water and high light intensity places. The uncontrollable growth of water hyacinth has caused many negative impacts to the environment. For instance, interrupted water transport and decreased population of aquatic lives. The capacity of utilising water hyacinth is slower than water hyacinth growth and water hyacinth is still considered as a threat to theecosystem. This work was focused on the study of the pharmacological activity and heavy metal content of water hyacinth in Lake Cipondoh, Tangerang. Fresh water hyacinth was pre-treated through oven-drying and milling process. After that, each part of the plant was macerated by using multiple extraction method with 96% ethanol/water and three variations of sample-to-solvent ratios (1:30, 1:50, and 1:75 w/v). The result of the experiment showed thatwater hyacinth leaves produced an extract with lowest IC 50 (55.76 ± 6.73 ppm) compared toother parts. The most optimum solvent used to achieve this result was 96% ethanol/water (1:1 v/v). In order to obtain the lowest antioxidant activity, the sample to solvent ratio used was 1:50 and the heavy metal in the extract was very low. With this result, it was concluded that there is a promising opportunity to apply the water hyacinth growing in Lake Cipondoh, Tangerang as herbal medicine ingredient. Through this utilization, the overall number of water hyacinth in Indonesia can be reduced or at the least be controlled, so that the environmental problem caused by this plant can be minimized.

Extraction, Purification and Characterization of Nanocrystalline Cellulose from Eichhornia crassipes (Mart.) Solms: A Common Aquatic Weed Water Hyacinth

2021 ◽  
pp. 1-12
Author(s):  
Kannan Kilavan Packiam ◽  
Bharani Murugesan ◽  
Pavithra Mettupalayam Kaliyannan Sundaramoorthy ◽  
Harshini Srinivasan ◽  
Keerthika Dhanasekaran
Keyword(s):  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Nanocrystalline Cellulose ◽  
Aquatic Weed ◽  
Purification And Characterization

Water hyacinth (Eichhornia crassipes) biochar as an alternative cathode electrocatalyst in an air-cathode single chamber microbial fuel cell

2020 ◽  
Vol 45 (10) ◽  
pp. 5911-5927 ◽  
Author(s):  
Fatma Allam ◽  
Mohamed Elnouby ◽  
K.M. El-Khatib ◽  
Dalia E. El-Badan ◽  
Soraya A. Sabry
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Air Cathode ◽  
Single Chamber
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