DOCSLIB.ORG

Analisis Potensi Produksi Air Pada Beberapa Skenario Penggunaan Lahan Di Daerah Aliran Sungai Paninggahan-Singkarak

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Analisis Potensi Produksi Air Pada Beberapa Skenario Penggunaan Lahan Di Daerah Aliran Sungai Paninggahan-Singkarak Analisis Potensi Produksi Air pada Beberapa Skenario Penggunaan Lahan di Daerah Aliran Sungai Paninggahan-Singkarak Analysis of Water Production Potencial under Various Scenario in Paninggahan-Singkarak Watershed N. PUJILESTARI1, S.D. TARIGAN2, DAN K. SUBAGYONO3 ABSTRAK air bagi pusat pembangkit listrik tenaga air untuk memenuhi kebutuhan listrik Sumatera Barat dan Daerah Aliran Sungai (DAS) Paninggahan merupakan bagian dari DAS Danau Singkarak. Wilayah ini memiliki proporsi Riau, rumah bagi pelestarian warisan adat luas hutan budidaya terluas dibandingkan dengan sub DAS lain di Minangkabau. Selain itu, Danau Singkarak merupakan Singkarak. Laju konversi hutan menjadi kebun campuran di hulu DAS Paninggahan berlangsung cepat. Penelitian ini bertujuan danau terbesar kedua di Pulau Sumatera dengan untuk menganalisis perubahan debit sungai terkait dengan perubahan penggunaan lahan. Hasil penelitian menunjukkan kekayaan berbagai jenis ikan endemik, serta memiliki bahwa karakteristik hidrologi DAS Paninggahan masih baik, bentang alam yang indah yang dapat dikembangkan kondisi penggunaan lahan yang didominasi oleh hutan (53%) dan sedikit pemukiman (2.5%), menyebabkan kapasitas simpan air di untuk kegiatan ekoturisme yang menarik. Oleh DAS masih besar. Antara tahun 1984 sampai dengan tahun 2007 karena itu, ketersediaan sumberdaya air menjadi telah terjadi penyusutan luas wilayah hutan dengan laju 66 ha tahun-1, dan pertambahan luas kebun campuran yang mencapai faktor utama pendukung semua kegiatan di wilayah 39 ha tahun-1. Hasil analisis debit menunjukkan bahwa degradasi ini. hutan akan meningkatkan debit total sampai 1,3 m3 det-1 dan menurunkan debit minimum sampai 0,2 m3 det-1. Informasi Penelitian dilakukan di DAS Paninggahan yang dampak perubahan komposisi penggunaan lahan terhadap produksi debit di suatu DAS dapat dijadikan acuan untuk memberikan kontribusi aliran ke Danau Singkarak. pengembangan DAS secara berkelanjutan untuk mengantisipasi Wilayah ini memiliki struktur batuan kombinasi granit penurunan debit sungai di DAS. dan kapur dan saat ini memiliki rasio penutupan Kata kunci : DAS, Perubahan penggunaan lahan, Debit hutan tertinggi dibandingkan dengan sub DAS lain di ABSTRACT Singkarak (Subagyono, 2006). Wilayah tersebut sebenarnya telah ditanami kopi pada masa Paninggahan watershed is the sub watershed of the Singkarak Lake watershed. It has a largest part of managed pendudukan Belanda, namun sejak perkebunan kopi forest in the upstream and the change of landuse from forest to tersebut diabaikan pada tahun 1958 saat ini wilayah mixture garden increasing rapidly. The study on the change of discharge related to the landuse change is the main focus of this tersebut berubah menjadi hutan sekunder. Pada research. The result shows that hydrological characteristic of tahun 1976 Pemerintah Indonesia telah melaksana- Paninggahan watershed is still good, with the domination of secondary forest covering 53% of the watershed. Therefore this kan program penghijauan di wilayah ini, termasuk watershed still has large amount of water reserve. The result of untuk lahan-lahan yang dikuasai Nagari di hulu DAS. monitoring landuse change from year 1984-2007, indicating that the rate of forest decreasing was 66 ha year-1 and the increasing Namun penduduk setempat merasakan bahwa -1 of mixture garden was 39 ha year . The result of characteristic program penghijauan tersebut mengurangi peng- simulation discharge showed that forest degradation will increase total volume of discharge to 1.3 m3 s-1, whereas minimum debit hasilan mereka. Penduduk setempat merencanakan will progressively decrease till 0.2 m3 s-1. The knowledge of the influence of landuse change due to decreasing of debit in the wilayah tersebut untuk ditanami tanaman buah, watershed becomes guidance for the continous watershed cengkeh dan kemiri. Akhirnya pada tahun 2004, development. melalui program penghijauan kembali yang didukung Keywords : Watershed, Landuse change, Discharge oleh Asosiasi Pengusaha Hutan Indonesia (APHI) dan Gerakan Nasional Rehabilitasi Hutan dan Lahan Kritis PENDAHULUAN 1. Peneliti pada Balai Penelitian Agroklimat dan Hidrologi, Bogor. DAS Paninggahan merupakan bagian dari DAS 2. Staf pengajar pada Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pasca Sarjana, Institut Pertanian Bogor, Bogor. Danau Singkarak di Sumatera Barat. DAS Singkarak 3. Kepala Balai Besar Pengkajian dan Pengembangan Teknologi merupakan daerah penting penghasil padi, sumber Pertanian, Bogor. ISSN 1410 – 7244 13 JURNAL TANAH DAN IKLIM NO. 33/2011 (GNRHLK) rencana tersebut mulai terwujud (Farida 3. Peta penggunaan lahan Rupa Bumi Indonesia et al., 2005). skala 1:50.000. Jantop TNI AD, Jakarta tahun Untuk meningkatkan produktivitas lahan di 1984. wilayah hulu, diperlukan dasar pengelolaan lahan 4. Peta satuan lahan dan tanah lembar Padang dan yang tepat, terkait dengan fungsi hidrologi DAS. Solok, Sumatera Barat skala 1:250.000, Pusat Berdasarkan fakta tersebut maka informasi Penelitian Tanah dan Agroklimat tahun 1990. karakteristik produksi air terkait dengan penggunaan 5. Citra Landsat dengan path/row 127/060, akuisisi lahan menjadi penting untuk diketahui. Agar tahun 1992, 2002, dan 2007. pendekatan ini dapat terlaksana, maka pengetahuan dan pemahaman proses hidrologi pada tiap-tiap Metode penelitian penggunaan lahan sangat diperlukan. Penelitian tentang karakteristik DAS Singkarak sebelumnya Analisis perubahan penggunaan lahan telah dilakukan untuk menghitung neraca air DAS (Peranginangin et al., 2004). Farida et al. (2005) Peta Rupa Bumi (RBI) yang dikeluarkan oleh telah menganalisis pengaruh program penghijauan Direktorat Topografi (Jantop) TNI-AD, Jakarta tahun terhadap karakteristik hidrologi DAS Paninggahan 1998 lembar Talawi dan Lubuk Alung skala dengan menggunakan data hipotetik dari model 1:50.000 digunakan sebagai referensi dasar GenRiver 1,1. Subagyono (2006) melakukan perubahan penggunaan untuk tahun-tahun pemantauan kondisi hidrologi dan iklim di DAS berikutnya. Peta tersebut diregistrasi dan di-cropping Paninggahan melalui pemasangan stasiun iklim untuk wilayah DAS Paninggahan. Kegiatan digitasi (AWS) dan pemantau tinggi muka air otomatis peta dilakukan untuk mendapatkan data penggunaan (AWLR), sehingga memungkinkan didapatkannya lahan tahun 1984. Peta ini kemudian dijadikan data primer dengan resolusi waktu yang tinggi. standar baku interpretasi untuk menentukan jumlah Berdasarkan data hasil pemantauan AWS dan AWLR kelas klasifikasi. tersebut dilakukan perhitungan produksi air di DAS Tahap selanjutnya peta tersebut ditumpang- Paninggahan. tepatkan dengan peta, perubahan penggunaan lahan Tujuan dari penelitian ini adalah 1) tahun 1992 yang didelineasi dengan menggunakan menganalisis pola perubahan penggunaan lahan di citra satelit secara manual berdasarkan rona dan DAS Paninggahan, 2) menganalisis pengaruh bentuk. Peta topografi dan tanah digunakan sebagai pengelolaan lahan terhadap debit, dan 3) data pendukung ketepatan delineasi. Dengan menganalisis dan menghitung produksi air DAS pada standar yang sama, dilakukan klasifikasi untuk citra berbagai skenario penggunaan lahan tahun 2001 dan 2007. Hasil klasifikasi penggunaan lahan ketiga METODOLOGI PENELITIAN tahun tersebut, kemudian ditumpang-tepatkan satu dengan lainnya sehingga dapat diketahui luas dan Bahan dan alat pola perubahan penggunaan lahan. Bahan yang digunakan terdiri atas data sebagai berikut : Perhitungan potensi produksi air 1. Data iklim dari AWS dan debit dari AWLR di DAS Prediksi produksi air harian dikaitkan dengan Paninggahan periode Maret 2006 sampai dengan penggunaan lahan menggunakan program simulasi Desember 2008. debit Model Debit Daerah Aliran Sungai (MODDAS) 2. Data iklim stasiun Saning Bakar dan Sumani (Kartiwa, 2008) yang merupakan model simulasi periode tahun 1975-1998. debit harian yang dikembangkan berdasarkan integrasi 14 N. PUJILESTARI ET AL. : ANALISIS POTENSI PRODUKSI AIR PADA BEBERAPA SKENARIO PENGGUNAAN LAHAN Model SCS Curve Number (SCS-USDA, 1972 dalam Untuk mengevaluasi kualitas hasil simulasi, Chow, 1988) dengan Model Aliran Air Bawah Tanah dilakukan uji perbandingan antara debit pengukuran (ground water flow). Model ini pertama kali dengan debit simulasi menggunakan koefisien dikembangkan oleh Kartiwa (2008), untuk kemiripan F (Nash dan Sutcliffe dalam Kartiwa, mempelajari perubahan karakteristik hidrologi akibat 2004) : n perubahan penggunaan lahan di DAS Aih Tripe, 2 ∑ ()Qobs (t) − Qsim(t) i=1 Provinsi Nanggroe Aceh Darusalam. Diagram alir F = 1− n 2 Q (t) − Q MODDAS disajikan pada Gambar 1. ∑ ()obs obs i=1 Kalibrasi parameter model MODDAS dilakukan dimana : untuk menyesuaikan parameter DAS Paninggahan. F = koefisien kemiripan (F ≤ 1 ; F=1, Setelah itu dilakukan validasi untuk menguji kualitas simulasi sempurna) 3 hasil prediksi. Data yang digunakan untuk kalibrasi Qobs (t) = debit pengukuran pada waktu ke- t (m adalah data luas penggunaan lahan di DAS det-1) 3 Paninggahan hasil dari analisis citra Landsat tahun Qsim (t) = debit simulasi pada waktu ke- t (m -1 2007 dan jenis tanah dari peta tanah skala det ) 3 -1 1:250.000 untuk menentukan grup tanah. MODDAS Qobs = debit pengukuran rata-rata (m det ) yang telah divalidasi kemudian digunakan untuk memprediksi debit setahun untuk berbagai tipe Karakteristik debit akibat pengaruh pengolahan penggunaan lahan dengan menggunakan data curah lahan dianalisis berdasarkan pola debit sesaat pada hujan tahun 2006 dan 2007. empat periode pengelolaan lahan yaitu saat tanam, P = Presipitasi P RO = Aliran permukaan ETP = Evapotranspirasi
Load more

Recommended publications
  • Catalogue of SUMATRAN BIG LAKES
    Catalogue of SUMATRAN BIG LAKES Lukman All rights reserved. No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the publisher, except in the case of brief quotations embodied in critical reviews and certain other noncommercial uses permitted by copyright law. Catalogue of SUMATRAN BIG LAKES Lukman LIPI Press © 2018 Indonesian Institute of Sciences (LIPI) Research Center for Limnology Cataloging in Publication Catalogue of Sumatran Big Lakes/Lukman–Jakarta: LIPI Press, 2018. xviii + 136 pages; 14,8 × 21 cm ISBN 978-979-799-942-1 (printed) 978-979-799-943-8 (e-book) 1. Catalogue 2. Lakes 3. Sumatra 551.482598 1 Copy editor : Patriot U. Azmi Proofreader : Sarwendah Puspita Dewi and Martinus Helmiawan Layouter : Astuti Krisnawati and Prapti Sasiwi Cover Designer : Rusli Fazi First Edition : January 2018 Published by: LIPI Press, member of Ikapi Jln. Gondangdia Lama 39, Menteng, Jakarta 10350 Phone: (021) 314 0228, 314 6942. Fax.: (021) 314 4591 E-mail: [email protected] Website: lipipress.lipi.go.id LIPI Press @lipi_press List of Contents List of Contents .................................................................................. v List of Tables ...................................................................................... vii List of Figures .................................................................................... ix Editorial Note ....................................................................................
    [Show full text]
  • Water Management in the Upper Sub-Basin of the Inderagiri River Basin in Indonesia: Issues and Implications Related to Integrated Water Resources Management
    Intersectoral Management of River Basins Water Management in the Upper Sub-Basin of the Inderagiri River Basin in Indonesia: Issues and Implications Related to Integrated Water Resources Management Helmi Lecturer, Centre for Irrigation, Land and Water Resources Development Studies Andalas University, Padang, Indonesia Abstract Integrated water resources management (lWRM) is an important development agenda for addressing institutional problems and capacity building for the 41se, control, preservation and sustainability of water systems. Pursuing this requires understanding of related issues and their implications for dev~/opment of effective water management institutions. Indonesia is in the process of reforming its water resources management policy, which will give emphasis to putting IWRM principles into action. One of the elements of the new policy is related to the improvement of river-basin management. Although experience on river-basin management has been developed in one basin (Brantas river basin in East Java), this was not the case for other regions of the country until lately. This paper discusses the dynamics of water use and management in the upper sub-basin of the Inderagiri river basin, in West Sumatra, Indonesia. Issues and implications related to IWRM are identified. The topics covered are: the policy and institutional context of river-basin management, with an overview of the water management policy reforms and related aspects of policy relevant to improvement of river-basin management in West Sumatra Province; a more specific discussion on the setting and hydrology of the upper sub-basin; a special case illustrating water use competition and water allocation in a river (Ombilin River) within the upper sub-basin.
    [Show full text]
  • Genetic Variation Among Asang Fish
    International Journal of Fisheries and Aquatic Studies 2014; 1(6): 213-217 ISSN: 2347-5129 Genetic variation among asang fish (Osteochilus vittatus IJFAS 2014; 1(6): 213-217 © 2013 IJFAS Cyprinidae) populations using random amplified www.fisheriesjournal.com Received: 16-06-2014 polymorphic DNA (RAPD) markers Accepted: 13-07-2014 Azrita Azrita, Hafrijal Syandri, Junaidi Department of Aquaculture, Faculty of Fisheries and Marine Science Bung Abstract Hatta University, Random amplified polymorphic DNA-polymerase chain reaction (RAPD-PCR) was applied to analyze West Sumatra, Indonesia. the genetic variation among Osteochilus vittatus collected from three geographically distant location of Hafrijal Syandri West Sumatra Province. After initial PCR screening, four random oligodecamers viz OPA 07, OPA 09, Department of Aquaculture, Faculty of OPA11 and OPA 18 which generated the RAPD profile for the three O. vittatus populations were Fisheries and Marine Science Bung selected. The best amplication using from four primers resulted are OPA 18 in fragments ranging in Hatta University, length 400 - 1300 bp assigned to 22 loci. The study results show that the genetic diversity of the West Sumatra, Indonesia. populations Singkarak Lake is 0.1250, Antokan River is 0.0431 and Koto Panjang Reservoir is 0.1512. While pairwise Fst comparison test showed significant differences (p <0.05) between the three Junaidi populations of fish. Estimed of Nei’s (1972) unbiased genetic distance (D) values ranged from 0.0534 to Department of Aquaculture, Faculty of 0.0610. Unweighted pair group method with arithmetic mean (UPGMA) dendogram contructed on the Fisheries and Marine Science Bung basis of genetic distance revealed very close genetic relationship among O.
    [Show full text]
  • Read More About Our Method
    Pressing the Imperata grasses using a lodging board is an easy and labour-saving-technique. Photo by CO2 Operate BV/B Angkawijaya 2 | Community management for agro-reforestation under a voluntary carbon market scheme in West Sumatra CHAPTER 29 Community Management for Agro-reforestation Under a Voluntary Carbon Market Scheme in West Sumatra Paul Burgers and Ai Farida Highlights Carbon payments can be an effective means to restore productive forest landscapes Indigenous structures, rooted in local contexts, can adapt to performance-based interventions Egalitarian cooperatives improve performance-based ecosystem rehabilitation. Combine short term profits and long-term sustainability to restore agroforests Assisted Natural Regeneration with tree planting accelerates forest restoration 29.1 Background Land rehabilitation and improving the economies of communities living in and around degraded forests and other land-sector domains, such as agriculture, received a prominent position in the national Low Emission Development Strategies (LEDS). Landscape rehabilitation is to be achieved by restoring ecosystem functions and sustainable forest management (including social forestry) in degraded areas through the active participation of the private sector, civil society organizations, local communities and vulnerable groups, especially adat communities and women, both in the planning and implementation stages1. Estimates show that the forestry sector and land-use change in Indonesia contribute 53%–85% of Indonesia’s total annual carbon emissions. Under the Indonesian climate plan, the Intended Nationally Determined Contribution (INDC) states that the Indonesian government aims to reduce emissions by 29% (i.e. 835 MTon CO2e by 2030 compared to the Business as Usual (BaU) scenario. The term ‘degraded’ has been used in multiple contexts in Indonesian law and policy.
    [Show full text]
  • Ombilin Coal Mine Site: History and Potential As a Learning Source for the History of the Economy Based on Outdoor Learning
    Ombilin Coal Mine Site: History and Potential as a Learning Source for the History of the Economy Based on Outdoor Learning Rosmiati1, Anny Wahyuni2, Amir Syarifuddin3 1,2,3 Faculty of Teacher Training and Education, Universitas Jambi, Indonesia [email protected] Abstract Keywords jigsaw learning model; This study aims to determine the history of the Ombilin Sawahlunto coal mine, the use of this site as a historical learning cooperative learning; resource based on outdor learning and the obstacles it faces in its outcomes utilization. The method used in this research is qualitative with a descriptive approach. The sources used were interviews, literature and newspapers. After collecting the sources and separating the primary and secondary sources, rewrite them. The research results found that government projects in the city of sawahlunto consist of three projects including first, exploitation of coal mines, second, construction of railways, third, construction of the port of Emmahaven (Teluk Bayur). Traces of Dutch heritage that still exist today are the railway museum, Goedang Ranseum, Mbah Soero Mine Hole, and the Coal Mining Museum. This legacy can be used as a source of historical learning based on outdor learning. I. Introduction This Economic History course contains a series of knowledge about the concepts of Economic theory, economic history, and the socio-economic development of Indonesia from prehistoric times, to the European colonial era, one of which is the Netherlands to the latest period of the 21st century in Indonesia, by emphasizing the discussion of thematic history (topical). This economic history course is not only a lecture in the classroom but requires field courses because the learning resources in this course are not only limited to books, modules and economic history dictates but there are historical sites.
    [Show full text]
  • How to Reduce Communication and Perception Gaps Before Rewards for Environmental Services Negotiations Can Start?
    Dealing with myth-perceptions: how to reduce communication and perception gaps before Rewards for Environmental Services negotiations can start? Highlights Key Rewards for environmental services (RES) schemes should become 1. Realistic design and improvement a sustainable mechanism, not a project-based one per se. At its of environmental services can result in findings initial development, all the main stakeholders involved – poor sustainable RES schemes. rural people who are the major environmental service providers, environmental service beneficiaries and intermediaries – usually 2. Developing an RES scheme has very face a number of questions: Is RES is a realistic expectation that high transaction costs; therefore, there is will benefit all stakeholders? Will poor rural people be wasting a need to apply rapid, participatory and their valuable time and resources in pursuit of rewards, only to be economically viable environmental service disappointed? assessments to ensure good design and as the basis for communication among main Conservation efforts still rarely achieve a stable or increasing stakeholders that leads to fair negotiation supply of environmental services. Many other factors, including and long-term environmental service ‘extreme’ events (such as dry years and natural disasters) can agreement. influence supply. This also raises a number of questions: What services should be targeted? Do these services qualify for market- 3. The RHA, RABA, RACSA, and based recognition? What interventions can be technically RATA tools can provide the environmental supported and planned? service intermediaries or ‘honest brokers’ a sound understanding of what the RUPES has developed a logical sequence of steps that: (1) are negotiation process should try to achieve.
    [Show full text]
  • Hydro-Meteorological Characteristics for Sustainable Land Management in the Singkarak Basin, West Sumatra
    HYDRO-METEOROLOGICAL CHARACTERISTICS FOR SUSTAINABLE LAND MANAGEMENT IN THE SINGKARAK BASIN, WEST SUMATRA Kasdi Subagyono1, B. Kartiwa2, H. Sosiawan2, E. Surmaini2, and E. Susanti2 1Balai Pengkajian Teknologi Pertanian Jawa Barat, Lembang-Bandung 2Balai Penelitian Agroklimat dan Hidrologi, Bogor Abstract Hydro-meteorological processes of the Singkarak basin has been studied involving participatory of local community in 2006-2007. Automatic weather station (AWS) and automatic water level recorder (AWLR) were installed to record meteorological and hydrological data within the Singkarak Basin. Meteorological data was analyzed to understand the meteorological characteristic surrounding the Basin area. Model of GR4J and H2U were used to simulated discharge and to understand the hydrological processes within the basin. The validation of simulated discharge was done in the wet season. Best bet menu of land management options was formulated based on hydro- meteorological characteristics of the catchments surrounding Singkarak basin. The results showed that the catchments have high response to rainfall producing runoff that is discharged to the lake. The hydrograph data shows that the discharge sharply increased immediately after rainfall started then decreased quite slowly when rainfall ended. For sustainable land management in the Singkarak basin, land and water conservation have to be a priority options. Agro-forestry may be a better cropping system that has to be applied by local community. Since potential water scarcity during dry spell period may occur, water harvesting and water conservation are better options to be associated into the land management system. Keywords: Hydro-meteorology; Land management; Land use change; Singkarak basin Abstrak Study tentang karakteristik hidro-meteorologi telah dilakukan di wilayah danau Singkarak pada 2006-2007 dengan melibatkan partisipasi masyarakat.
    [Show full text]
  • Toward a Locally Accomodative Energy Policy
    digitales archiv ZBW – Leibniz-Informationszentrum Wirtschaft ZBW – Leibniz Information Centre for Economics Saptomo, Ade Article Social governance and production transformation management system in mining industry in Indonesia : toward a locally accomodative energy policy Provided in Cooperation with: International Journal of Energy Economics and Policy (IJEEP) This Version is available at: http://hdl.handle.net/11159/4942 Kontakt/Contact ZBW – Leibniz-Informationszentrum Wirtschaft/Leibniz Information Centre for Economics Düsternbrooker Weg 120 24105 Kiel (Germany) E-Mail: [email protected] https://www.zbw.eu/econis-archiv/ Standard-Nutzungsbedingungen: Terms of use: Dieses Dokument darf zu eigenen wissenschaftlichen Zwecken This document may be saved and copied for your personal und zum Privatgebrauch gespeichert und kopiert werden. Sie and scholarly purposes. You are not to copy it for public or dürfen dieses Dokument nicht für öffentliche oder kommerzielle commercial purposes, to exhibit the document in public, to Zwecke vervielfältigen, öffentlich ausstellen, aufführen, vertreiben perform, distribute or otherwise use the document in public. If oder anderweitig nutzen. Sofern für das Dokument eine Open- the document is made available under a Creative Commons Content-Lizenz verwendet wurde, so gelten abweichend von diesen Licence you may exercise further usage rights as specified in Nutzungsbedingungen die in der Lizenz gewährten Nutzungsrechte. the licence. Leibniz-Informationszentrum Wirtschaft zbw Leibniz Information Centre for Economics International Journal of Energy Economics and Policy ISSN: 2146-4553 available at http: www.econjournals.com International Journal of Energy Economics and Policy, 2019, 9(3), 115-120. Social Governance and Production Transformation Management System in Mining Industry in Indonesia: Toward a Locally Accomodative Energy Policy Ade Saptomo* Universitas Pancasila, South Jakarta, Indonesia.
    [Show full text]
  • Cyprinidae: Osteochilus Hasseltii CV
    BIODIVERSITAS ISSN: 1412-033X (printed edition) Volume 12, Number 3, July 2011 ISSN: 2085-4722 (electronic) Pages: 141-145 DOI: 10.13057/biodiv/d120304 Morphological divergences among three sympatric populations of Silver Sharkminnow (Cyprinidae: Osteochilus hasseltii C.V.) in West Sumatra DEWI IMELDA ROESMA♥, PUTRA SANTOSO Department of Biology, Faculty of Mathematics and Natural Sciences, Andalas University, Padang 25163, West Sumatra, Indonesia. Tel. +62-751- 777427. Fax. +62-751-71343 ♥ e-mail: [email protected] Manuscript received: 22 April 2011. Revision accepted: 17 June 2011. ABSTRACT Roesma DI, Santoso P. 2011. Morphological divergences among three sympatric populations of Silver Sharkminnow (Cyprinidae: Osteochilus hasseltii C.V.) in West Sumatra. Biodiversitas 12: 141-145. Silver sharkminnow (Osteochilus hasseltii C.V.) named by local people as Asang is one of potential Cyprinid fishes species found in several different ecosystems in West Sumatra. The differences of habitat types and another ecological factor among populations may have significant influences on variation and differentiation of morphological characters of this species. In order to elucidate the pattern of morphological divergence, meristic and morphometric characters of O. hasseltii in Singkarak and Dibawah Lake and adjoining river were compared. Phenogram based on cluster analysis showed specific morphological divergence among populations. There were 23 characters significantly different among all compared populations, the highest degree of differentiation was found between Singkarak and Dibawah Lake population (22 characters significantly different) and the most similar population were Singkarak Lake and Ombilin an outlet river of lake (only six characters significantly different). Key words: fish, Osteochilus hasselti, meristic, morphometric. INTRODUCTION people around or run off from the inlet rivers.
    [Show full text]
  • Studies on Climate Changes and Natural Resources Management: Findings and Lesson Learned from West Sumatera, Indonesia1
    STUDIES ON CLIMATE CHANGES AND NATURAL RESOURCES MANAGEMENT: FINDINGS AND LESSON LEARNED FROM WEST SUMATERA, INDONESIA1 Rudi Febriamansyah Andalas University, Padang-INDONESIA [email protected] ABSTRACT This paper exposes some empirical facts of the regional changes of climatic variability in West Sumatera, Indonesia and presents such identification of its impacts on natural resources and agricultural activities in the region. This study chose the case site in the surrounding Singkarak Lake as the rain-shadow region in West Sumatra. This PEER-USAID-sponsored study found that there are significant changes of seasonal pattern of rainfall in this region during the last 30-40 years. The area in the eastern part of Singkarak relatively has become drier than in the western part Singkarak. Results from the vulnerability analysis shows that the villages in the eastern side of the Lake became much more vulnerable compared with the villages in the western side. Approximately more than 500 ha of upland paddy (rain-fed paddy) in the eastern region Singkarak is already over 30 years are not reprocessed, and many people are now working on dry-land crops and rubber plantation, or even work in non-agriculture jobs or migrate to the cities. Paddy farmers in this region are facing difficulties to set up their planting schedule. Significant impacts are also occurred in the onion farm in the western side of the Lake, where the fluctuation of production during the rainy season is becoming relatively high or more risky. From those identification studies, it can be concluded that the effects of global climate change has affected the regularity of the local climate in this area of study and then influence the natural resources condition and agricultural activities.
    [Show full text]
  • The Presence of Bull Shark Carcharhinus Leucas (Elasmobranchii: Carcharhinidae) in the Fresh Waters of Sumatra, Indonesia
    BIODIVERSITAS ISSN: 1412-033X Volume 21, Number 9, September 2020 E-ISSN: 2085-4722 Pages: 4433-4439 DOI: 10.13057/biodiv/d210962 Short Communication: The presence of Bull shark Carcharhinus leucas (Elasmobranchii: Carcharhinidae) in the fresh waters of Sumatra, Indonesia VERYL HASAN1,2,♥, MAHENO SRI WIDODO3,♥♥ 1Department of Fish Health Management and Aquaculture, Faculty of Fisheries and Marine Science, Universitas Airlangga. Jl. Dr. Ir. Sukarno, Surabaya 60115, East Java, Indonesia. Tel.: +62-31-315911541, Fax.: +62-31-5965741, ♥email: [email protected] 2Division of Zoology, Generasi Biologi Indonesia Foundation. Jl. Swadaya Barat No. 4, Gresik 61171, East Java, Indonesia 3Department of Aquaculture, Faculty of Fisheries and Marine Science, Universitas Brawijaya. Jl. Veteran, Malang 65145, East Java, Indonesia. Tel.: +62-341-553512, Fax.: +62-341-556837, ♥♥ email: [email protected] Manuscript received: 15 July 2020. Revision accepted: 30 August 2020. Abstract. Hasan V, Widodo MS. 2020. Short Communication: The presence of Bull shark Carcharhinus leucas (Elasmobranchii: Carcharhinidae) in the fresh waters of Sumatra, Indonesia. Biodiversitas 21: 4433-4439. A single subadult specimen of Bull shark Carcharhinus leucas was photographed and captured by local fisherman using casting net on June 2020 in the upper Indragiri River, Riau Province, Indonesia. Carcharhinus leucas are one of only a few species of elasmobranchs that live in both marine and freshwater environments. This species currently listed as a near-threatened species based on the IUCN Red List Status. Singel specimen identified as C. leucas by the coloration of fresh specimen: white belly and greyish back, first dorsal fin high, tip of second dorsal and caudal fins black.
    [Show full text]
  • Download PDF 376 KB
    Working Paper 96 Stakeholder Participation in Developing Institutions for Integrated Water Resources Management: Lessons from Asia D. J. Bandaragoda International Water Management Institute IWMI receives its principal funding from 58 governments, private foundations and international and regional organizations known as the Consultative Group on International Agricultural Research (CGIAR). Support is also given by the Governments of Ghana, Pakistan, South Africa, Sri Lanka and Thailand. The author:D.J. Bandaragoda, former Principal Researcher and Director of Southeast Asia Regional Office, International Water Management Institute. Bandaragoda, D. J. 2005. Stakeholder participation in developing institutions for integrated water resources management: Lessons from Asia. Working Paper 96. Colombo, Sri Lanka: International Water Management Institute (IWMI). water resource management / participatory management / methodology / institutions / river basins / Asia ISBN 92-9090-598-0 Copyright 2005, by IWMI. All rights reserved. Please direct inquiries and comments to: [email protected] ii Contents Summary ................................................................................................................................. v Introduction ................................................................................................................................. 1 Guidance from Previous Research .................................................................................................. 4 Methodological Proposition in the Regional
    [Show full text]