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Wieske Chriesti Rotinsulu
PS Agronomi, Pascasarjana, Universitas Sam Ratulangi, Manado
Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance Social Sciences

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Pengaruh Penyerapan Eceng Gondok (Eichornia crassipes) Dan Apu Apu (Pistia stratiotes) Terhadap Konsentrasi Cu Dan Zn Pada Air Limbah Pertambangan PT J Resources Bolaang Mongondow Rendy Stewart Wajong; Bobby Polii; Wieske Chriesti Rotinsulu
AGRI-SOSIOEKONOMI Vol. 18 No. 3 (2022)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (184.154 KB) | DOI: 10.35791/agrsosek.v18i3.44717

Abstract

This research aims to analyze the concentration of Cu, Zn, and pH in mining wastewater at the Pit Osela of PT J Resources Bolaang Mongondow (JRBM) and the effect of absorption of water hyacinth (eichhornia c) and water lettuce (pistia stratiotes) on heavy metals Cu, Zn and pH in plant tissues. Research Methods: The study was located in PT JRBM's greenhouse in Bolaang Mongondow Regency with Mining Wastewater (ALP) in Pit Osela (mining). The results: Cu concentration in ALP Pit Osela in the initial condition was 15.59 mg/l. The decrease in Cu concentration by water hyacinth started from 7.02 mg/l to 15.48 mg/l with an effectiveness of 45% to 99.3%. The concentration of Cu after being given water lettuce on the third day (38 days) was 0.12 mg/l. The concentration of Cu on the third day group was 8.51 mg/l. The concentration of Zn in ALP in Pit Osela (mining area) in the initial condition was 7.03 mg/l, after being given water hyacinth and water lettuce on the third day (38 days) it became 0.00 mg/l. The concentration of Zn in the control group on the first day was 7.01 mg/l, on the third day it was 7.01 mg/l. The pH concentration of ALP in the Osela Pit in the initial condition was 3.03. Increasing the concentration of pH with aquatic plant treatment after some time finally the wastewater can meet the environmental quality standard (BML) 6-9. The control group that was not given water plants, the initial concentration was pH 3.03, the pH on the first day was 3.30, the second and third days the concentration was the same, namely 3.30. There is an effect of absorption of water hyacinth and water lettuce on Cu and Zn content in plant tissues (leaves and roots).
Strategi Penyelesaian Konflik Tenurial Melalui Kemitraan Konservasi Di Taman Nasional Bunaken (Studi Kasus Pulau Mantehage) Pandu Wijaya; Hengki Djemie Walangitan; Wieske Chriesti Rotinsulu
AGRI-SOSIOEKONOMI Vol. 18 No. 3 (2022)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (235.42 KB) | DOI: 10.35791/agrsosek.v18i3.44723

Abstract

This research aims to analyze stakeholders for the implementation of conservation partnerships on Mantehage Island and formulate strategies for implementing conservation partnerships on Mantehage Island. This research was conducted from April to July 2022. The research method used a qualitative and quantitative descriptive approach. Primary data were obtained through direct interviews with managers of the Bunaken National Park area, village governments and community leaders on Mantehage Island. The questionnaire was conducted on the people on Mantehage Island with a total of 30 respondents who have plantation land on Mantehage Island. Secondary data was obtained from the Bunaken National Park Management Plan document for 2019-2028 as well as village monograph data. The results showed that there were seven stakeholders with the implementation of conservation partnerships on Mantehage Island, namely the Bunaken National Park Office, Local Communities, Village Governments and Non-Governmental Organizations as Key Players; Farmer's Group is located as Subject; Academics/Universities are located as Context Setters and Investors are located as Crowd. The results of the analysis related to the strategy of implementing conservation partnerships on Mantehage Island using the SWOT method show a position in quadrant I, namely supporting an aggressive strategy in which the implementation of conservation partnerships on Mantehage Island is supported by great strengths and opportunities.
Co-Authors Bobby Polii Hengki Djemie Walangitan Pandu Wijaya Rendy Stewart Wajong