30 research outputs found

    INVENTORY OF WATERBIRD SPECIES WHICH ACCUMULATE MERCURY FROM MINING WASTE OF COASTAL AREA NORTH GORONTALO REGENCY, INDONESIA

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    Artisanal gold mining waste that still contain mercury (Hg) then discharged into rivers and coastal area. Mercury in ecosystem aquatic has influence the food chain of the waterbirds. The objective of this research was to inventory the water birds species in the coastal, and describe the exposure of mercury in the organs of birds. This research conducted to the coastal region of North Gorontalo regency. Collecting data was in the Buladu and Ilangata coastal area. Data analysis to concentration mercury in the body of the water birds using Atomic Absorption Spectrophotometer (AAS) on samples of the kidneys, liver and muscle chest tissue. This study find out four species of waterbirds in the coastal area, also mercury concentrations exposure in the organs of each species, namely: (1) Butorides striatus, exposure of mercury 0.22 ppm in kidneys, 0.17 ppm in liver, 12.12 ppm in muscle; (2) Tringa melanoleuca, exposure of mercury 0.43 ppm in kidney, 0.31 ppm in liver, 0.31 ppm in muscle; (3) Actitis hypoleucos, exposure of mercury 0.19 ppm in kidney, 0.18 ppm in liver, 0.10 ppm in muscle; (4) Pluvialis squatarola, exposure of mercury 0.11 ppm in kidney, 0.10 ppm in liver, 0.10 ppm in the muscle. This research indicated that there was mercury pollution in the river, also mercury in food chain of birds living. The research strengthening the scientific knowledge in addressing to threats the bird’s biodiversity, also would be use for natural resources development and policy, as well community empowerment

    COMPOSITION AND STRUCTURE OF MANGROVE ASSOCIATES VEGETATION IN KWANDANG COASTAL AREA NORTH GORONTALO REGION AND MANANGGU COASTAL AREA BOALEMO REGION

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    Mangrove Association are plants that can adapt and tolerate in the environmental factors that are extreme ecologically in the coastal areas. That factor is salinity levels. This study described about the composition dan structure of mangrove vegetation. In order this result will support the management and utilization of mangrove associates. The method are used survey method at 2 locations, Kwandang coastal area and Managgu coastal area. Each location is made transects perpendicular from the shoreline to the land, on each transect have 6 plots, and placed on the right and left are intermittent, so the number of plots from the four stations is 24 plot. The plot size is 10 x 10 m2. Environmental parameters measured are soil salinity, soil pH, soil texture and moisture. Data were analyzed by descriptive and quantitative vegetation parameter calculation and computation ordination. The results showed that in the Kwandang coastal areas and Managgu Coastal found 19 species of Mangrove Association, among others; Derris trifoliata, Clerodenron inerme, Spinifex litoreous, Ipomoea pes-caprae, Pongamia pinnata, Sesuvium portulacastrum, Vitex ovate, Pluchea indica L, Canavalia maritime, Passiflora feotida, Cyathula prostrata (L.), Morinda citrifolia L, Terminalia catapa, Scaevola taccada, Stachytarpheta jamaicensis, Calotropis gigantean, Pinus mercusii, Dalbergia latifolia Roxb, and Thespesia populnea. There are differences parameter values of mangrove vegetation associations and the difference in pattern formation in the Kwandang coastal area and Managgu coastal area. There are differences in the micro-environment factors, soil salinity, pH, texture and moisture of air, at both locations

    Composition and Abundance Of Crustacea and Polychaeta In Mangrove Stands At Bulalo Kwandang District North Gorontalo Regency.

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    The aim of the study to determine the composition and abundance of Crustacea and Polychaeta based Mangrove stands in the village of Bulalo Kwandang District of North Gorontalo regency. The research conducted over four months. The method used is survey method and techniques of data collection was done by using a sample square. The data were analyzed by descriptive quantitative. The results showed that crustacea species which consists of 3 family, that is Portunidae, Sesarmidae, Ocypodidae, while the Polychaeta only one family that is Capitellidae family. At station 1 species which have the highest index of abundance that is Sesarma sp. Indv/m2 and 0.189 for species that have the lowest abundance index of 0.023 Indv/m2 Scylla serata. While at the station two species that have the highest abundance index Sesarma sp. of 0.188 Indv/m2 which has an index of abundance and low of Scylla serata the abundance index of 0.020 Indv/m2. The most abundance species found in the Rhizophora sp stands. Where species of the least discovered that the stand Avicenia sp

    KEBIJAKAN PEMANFAATAN DAN PENGAWASAN DALAM PENGELOLAAN SUMBER DAYA ALAM

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    Environmental quality is resultant from various conditions which caused by event of in natures and also cause of activie of human. One of a real problems related to condition and environmental quality is management of natural resources. In management of natural resources, balance between exploitings and continuity is important prerequisite. Existence of exploiting of natural resources and environment having the character of eksploitatif will affect to environmental quality. Management of natural resources required some policies, two among others is exploiting policy and observation policy. In this article explained about the policies. Conclusion from this article; exploiting of natural resources and environment having the character of eksploitatif, causes the balance and continuity annoyed; required various strategic steps and. action according to development of natural resources and environmental; observation policy of natural resources is interpreted as straightening of law in environmental management and natural resources; coordination effort between between institute which related in exploiting of natural resources is required

    Implementation of Stop Motion Graphic Animation Video as Learning Media to Improve Students' Ecoliteracy Ability on the Subject Matter of Environmental Change

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    This study aimed to determine the increase in student’s ecoliteracy skills through the implementation of stop motion graphic animation video as the learning media on the subject matter of environmental change. In conducting the study, it used the Pre-experiment method in the form of a quasi-experiment, one group pretest-posttest. The results of this study showed that, there was a significant increase in students’ ecoliteracy skills obtained in pretest by students before implementing the stop motion graphic animation media as 71.2. Meanwhile, the implementationof it showed an increase as the result of the posttestobtained an increased average value of 90.1. The use of stop motion graphic animation was applicable to be used as one of the learning media in biology. This was because it fostered students’ interest in the learning process. Therefore, based on the results of this study, it can be concluded that the stop motion graphic animation video can be used to improve students’ ecoliteracy skills significantlyPenelitian ini bertujuan untuk mengetahui peningkatan kemampuan ekoliterasi siswa melalui implementasi media video stop motion animation pada materi perubahan lingkungan. Penelitian ini menggunakan metode Pree-eksperimen , desain penelitian ini berupa Quasi-eksperiment , One Group Pretest-Posttest . Hasil penelitian ini adalah (1) terdapat peningkatan yang signifikan terhadap kemampuan ekoliterasi siswa pada materi perubahan lingkungan, dilihat dari nilai rata-rata pretest yang diperoleh siswa sebelum diterapkan media pembelajaran video stop motion graphic animation yaitu 71,2, setelah diterapkan media pembelajaran rata -rata rata nilai hasil posttestsiswa meningkat menjadi 90,1. (2) penggunaan video stop motion graphic animation layak dijadikan sebagai salah satu media dalam pembelajaran biologi menumbuhkan ketertarikan siswa dalam proses belajar mengajar. Berdasarkan kedua fakta tersebut dapat disimpulkan bahwa media stop motion animation dapat meningkatkan kemampuan ekoliterasi siswa secara signifikan

    STUDI KEMELIMPAHAN IKAN MANGGABA’I (Glossogobius giuris) DI PERAIRAN DANAU LIMBOTO

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    Penelitian ini bertujuan untuk mengetahui kelimpahan Ikan Manggaba’i (Glossogobius giuris) dan karakteristik fisik dan kimia air di perairan danau Limboto. Penelitian ini merupakan penelitian deskriptif kuantitatif yang stasiun pengamatannya berada di kawasan Keramba Jaring Apung (stasiun I), kawasan eceng gondok (stasiun II), dan bagian tengah danau (stasiun III). Pengambilan sampel ikan dilakukan dengan menggunakan pukat dan bunggo (meriam tradisional dari bambu). Objek dalam penelitian ini adalah Ikan Manggaba’i (Glossogobius giuris) dan diidentifikasi dengan Buku Identifikasi Ikan Air Tawar Indonesia Bagian Barat dan Sulawesi. Data dianalisis dengan menggunakan rumus kelimpahan. Hasil penelitian ini menemukan bahwa stasiun I memiliki nilai kelimpahan 40% dengan kategori sedang, stasiun II memiliki nilai kelimpahan 27% dengan kategori sedang, dan stasiun III memiliki nilai kelimpahan sebesar 31% dengan kategori sedang. Kelimpahan rata-rata Ikan Manggaba’i di perairan Danau Limboto adalah 32,66% atau termasuk dalam kategori sedang. Sedangkan kondisi fisik perairan Danau Limboto masih memenuhi kriteria kelangsungan hidup Ikan Manggaba’i

    DESKRIPSI AVIFAUNA DI RUANG TERBUKA HIJAU (RTH) KOTA GORONTALO

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    Penelitian ini bertujuan untuk mendeskripsikan jenis avifauna apa saja yang terdapat dibeberapa RTH (Ruang Terbuka Hijau) Kota Gorontalo dan untuk mendeskripsikan vegetasi yang menjadi habitat Avifauna di RTH (Ruang Terbuka Hijau) Kota Gorontalo. Penelitian ini merupakan penelitian deskripsi kualitatif dengan menggunakan metode jelajah (survey). Teknik pengumpulan data menggunakan metode titik hitung (Point Count) yaitu mencatat jumlah spesies yang teramati dan metode Rapid Assement  untuk mendapatkan gambaran umum tipe vegetasi. Pengamatan dilaksanakan pada tujuh RTH (Ruang Terbuka Hijau) Kota Gorontalo meliputi RTH Kota Tengah, Taman Kota Kota Selatan, Taman Smart Gelanggang, Taman Moodu, Kampus 1 Universitas Negeri Gorontalo, Kampus 2 Pendidikan Guru Sekolah Dasar (PGSD) Universitas Negeri Gorontalo dan Kampus 3 Fakultas Olahraga dan Kesehatan (FOK) Universitas Negeri Gorontalo. Pengamatan dimulai pada Bulan Agustus-September 2020 dan dilakukan pada pagi hari pukul 06:00 10:00 WITA, pada siang hari pukul 11:00-13:00 dan Pada sore hari pukul 16:00-17:30 WITA. Data yang diperoleh diidentifkasi dengan menggunakan buku panduan lapangan. Berdasarkan penelitian yang telah dilaksanakan pada tujuh Ruang Terbuka Hijau Kota (RTH) Kota Gorontalo diperoleh jumlah sebanyak 2.299 ekor yang teridiri dari 5 ordo. 23 spesies diantaranya merupakan burung penetap dan 1diantaranya adalah Gelatik Jawa (Pedda oryzivora) yang merupakan spesies diintroduksi dari Pulau Jawa dan Nusa Tenggara. Komposisi vegetasi di lokasi penelitian yang paling banyak ditemukan dan menjadi habitat serta tempat menacri makan avifauna terdapat 13 spesies tumbuhan yang terdiri dari tumbuhan berkayu seperti pohon Cemara (Casuarina equisetifolia), Pinus (Pinus sylvestris), Jati (Tectona grandis), Mangga (Mangifera indica) dan Beringan (Ficus ben)
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