Open Access Case study

Study Case: Productivity of Catched Fish in Locations around the Construction of Coal Power Plant, Jepara Indonesia

Slamet Isworo, Slamet Febrianto, Tosan Aji, Poerna Sri Oetari, Ekannisa Jasmiene

Asian Journal of Environment & Ecology, Page 52-63
DOI: 10.9734/ajee/2021/v15i230226

Background and objective: The productivity of fishing in marine waters provides an overview of the level of ability of the fishing gear used by fishermen to obtain optimal fish catches. This study aims to determine the productivity of fishing in locations around the construction of the coal-fired power plant, Jepara Indonesia.

Methods: The method used is a descriptive method which is a case study. This research case is about annual marine fishery productivity by calculating Catch Per Unit Effort (CPUE), then predictions are made using simple regression analysis.

Results: Based on the results of the study, a positive modeling trend (increase) was obtained for total fishery production, total demersal fishery production, and total pelagic fish production.

Conclusion: capture fisheries productivity in Jepara waters is generally quite good and is not affected due to the development of Tanjung Jati coal-fired power plant B-Unit 5 -6. This is because it is not a fishing operation area for fishermen so there is no potential conflict with fishermen.

Suggestion: The results of this study can be used by the Government of Jepara Regency in determining sustainable fishing policies and not overfishing

Open Access Original Research Article

Strategies to Enhance Adherence to Participatory Village Land use Plans in Ulanga District in Tanzania

M. N. Naiposha, E. F. Nzunda

Asian Journal of Environment & Ecology, Page 1-14
DOI: 10.9734/ajee/2021/v15i230222

Land use plans have been considered as a solution to land use problems. Effectiveness of implementation of land use plan relies on a number of factors including strategies that are used to enhance adherence to the land use plan. For the study area, current and potential strategies to enhance adherence to land use plans had previously not been assessed. Thus this study assessed current and potential strategies used to enhance adherence to participatory village land use plans in Ulanga District, Tanzania. Data were collected through household survey of 120 respondents from two villages, key informants interviews, focus group discussions, field observation, review of guidelines for land use planning, village and use plans, district land use framework, books and journals. Information from household survey and village records were descriptively analysed to obtain frequencies and percentages. Information from key informants and focus groups was analysed by content analysis. Current strategies used included by-laws, boundary demarcation, zoning, community action plan, and conflict resolution. The current strategies were ineffectively implemented and enforced due to inadequate awareness, inadequate fines and penalties, funding limitations, weak governance and inefficient coordination and monitoring. Potential strategies that should be implemented include education, awareness raising, capacity building and benefit sharing.

Open Access Original Research Article

Adherence to Land use Zones in Implementation of Participatory Village Land use Planning Policy in Ulanga District in Tanzania

M. N. Naiposha, E. F. Nzunda

Asian Journal of Environment & Ecology, Page 15-30
DOI: 10.9734/ajee/2021/v15i230223

Proper implementation of land use planning may contribute to solving land use problems, including land use conflicts. Adherence to land plans depends on many factors which vary according to circumstances of a study area. The present study aims to contribute to knowledge needed to enhance adherence to zones in land use planning. Specifically, the study had two objectives, namely: (1) to examine extent of adherence to village land use plans and, (2) to assess factors that influence adherence to the village land use plans. Data were collected through household survey of 120 respondents from two villages, key informants, focus group discussions, field observation, review of guidelines for land use planning, village land use plans (VLUPs), district land use framework, books and journal articles. GPS points to examine adherence to VLUPs were analyzed using Kappa statistic. Factors influencing adherence to VLUPs were analysed using binary logistical regression and pair-wise ranking. There was moderate adherence with kappa coefficient of 0.47 and 0.49 for Iragua and Kichangani villages. Larger families with higher incomes were more likely not to adhere to land use plans. Immigrants were also more likely not to adhere to plans than residents. Corruption of village leaders, lack of follow up by village leaders on implementation, lack of awareness on land use plans and underestimated population growth were the key prioritised factors that resulted in non-adherence of land use plans. The study recommends a review of the zoning standards to enhance sufficiency of allocated zones; privatization of grazing land; establishment of communal grazing management plans; and involvement of communities in developing complete plans. The study also recommends close monitoring; reviewing of VLUPs; enforcement of good governance; establishing incentive schemes; offering continuous education and developing participatory implementation framework.

Open Access Original Research Article

Assessment of Household Water Quality from Selected Storage Vessels used in a South-Western Rural Community, Nigeria

David Bamidele Olawade, Ojima Zechariah Wada, Omotayo Asogbon, Grace O. Owojori, Adesina Olufemi Adewole

Asian Journal of Environment & Ecology, Page 31-44
DOI: 10.9734/ajee/2021/v15i230224

Water is an important requirement for life but its contamination via natural and anthropogenic activities is of great concern. This study determined some physicochemical parameters of drinking water from the main source (borehole), and selected storage vessels in Abimbola, Ayedaade Local Government Area, Osun State, Nigeria. About 10 household water samples were collected randomly from the 70 households in the village. The major water storage vessels used by the villagers were clay pots. Only about one-fifth of the households used plastic containers. All the physico-chemical parameters assessed were within permissible limits of the World Health Organization and Standards Organization of Nigeria’s drinking water guidelines except for Lead and nitrite. Furthermore, water stored in clay pots had significantly higher levels of Nitrate (p=0.04), Nitrite (p=0.04), Sulphate (p=0.04), Lead (p=0.03), Iron (p=0.04), and Manganese (p=0.04) than those stored in plastic containers. Results suggest that the type of storage vessels used could influence the physicochemical quality of the water stored in them. Also, basic water quality monitoring needs to be conducted routinely to ascertain and maintain high quality water supply per time.

Open Access Original Research Article

Effect of Initial Plant Density on Growth and Nutrients Removal Efficiency of Duckweed (Lemna minor) from Leachate

Jamshaid Iqbal, Atif Javed, Hussnain Javed

Asian Journal of Environment & Ecology, Page 45-51
DOI: 10.9734/ajee/2021/v15i230225

An experiment was conducted by growing 25%, 50% and 100% initial densities of duckweed (Lemna minor) plants on dumpsite leachate under natural climatic conditions. Lemna minor (L. minor) growth and its ability to remove and absorb the nutrients (nitrogen and phosphorous) from leachate was investigated at each mat density. A simple mathematical model was developed to calculate the harvesting frequency (in days) of L. minor on leachate. The maximum growth rate (6.84 ± 4.13 g m-2day-1) of L. minor was observed at 50% initial density of L. minor plants on leachate whereas, the nutrients removal from leachate was the highest at 100% initial cover of L. minor plants on leachate. At 100% density L. minor removed nitrogen at the rate of 152.12 ± 2.31 mgm-2day-1 total kjeldahl nitrogen (TKN) and phosphorous at the rate 109.24 ± 3.05 mgm-2day-1 total phosphorous (TP) from the leachate. Absorption of the nitrogen and phosphorous was also highest at 50% density when L. minor absorbed 86% of the total removed nitrogen and 77% of the total removed phosphorous into its biomass. At 100% density in addition to the absorption of nutrients by L. minor, factors such as nitrification/denitrification and, nitrogen and phosphorous assimilation by algae and microorganisms also account for the overall high rates of nutrients removal from leachate. Based on the results of this study, L. minor can be used as a potential aquatic plant for developing a cost-effective natural system of leachate treatment.