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Archive for September, 2012

Artikel pada seminar, simposium, workshop tahun 2012 (sampai September)

2012 Kajita, T., Takayama, K., Asakawa, T., Salmo Iii, S.G., Adjie, B., Ardli, E.R., Soe, M.K.K., Saleh, M.N.B., Tung, N.X., Malekal, N.B., Onrizal, Yllano, O.B., Meenakshisundaram, S.H., Sungkaew, S., Shan, W.K., Watano, Y. & Baba, S.Friess, D.A. and Leong, R. Formation of a Research Network for Conservation of Genetic Diversity of Mangroves: Knowledge Gaps, Studies, and Future Directions. Meeting on Mangrove ecology, functioning and Management – MMM3 is jointly organised by the Vrije Universiteit Brussel (VUB), the Université Libre de Bruxelles (ULB), the University of Ruhuna (UoR) and the Kenya Marine and Fisheries Research Institute (KMFRI) in Galle, Sri Langka, 2-6 July 2012
2012 Ono, J., Takayama, K., Meenakshisundaram, S.H., Shan, W.K., Saleh, M.N.B., Webb, E.L., Asakawa, T., Adjie, B., Ardli, E.R., Soe, M.K.K., Tung, N.X., Malekal, N.B., Onrizal, Yllano, O.B., Sungkaew, S., Salmo Iii, S.G., Watano, Y., Baba, S., Tateishi, Y. and Kajita, T. Phylogeography of Bruguiera gymnorrhiza. Meeting on Mangrove ecology, functioning and Management – MMM3 is jointly organised by the Vrije Universiteit Brussel (VUB), the Université Libre de Bruxelles (ULB), the University of Ruhuna (UoR) and the Kenya Marine and Fisheries Research Institute (KMFRI) in Galle, Sri Langka, 2-6 July 2012
2012 Shinmura, Y., Takayama, K., Shan, W.K., Webb, E.L., Asakawa, T., Adjie, B., Ardli, E.R., Soe, M.K.K., Saleh, M.N.B., Tung, N.X., Malekal, N.B., Onrizal, Yllano, O.B., Meenakshisundaram, S.H., Sungkaew, S., Salmo Iii, S.G., Oguri, E., Murakami, N., Watano, Y., Baba, S. and Kajita, T. Development of SSR markers for five mangrove species using nextgeneration sequencing with preliminary results of analyses of genetic diversity. Meeting on Mangrove ecology, functioning and Management – MMM3 is jointly organised by the Vrije Universiteit Brussel (VUB), the Université Libre de Bruxelles (ULB), the University of Ruhuna (UoR) and the Kenya Marine and Fisheries Research Institute (KMFRI) in Galle, Sri Langka, 2-6 July 2012
2012 Tomizawa, Y., Takayama, K., Sungkaew, S., Saleh, M.N.B., Asakawa, T., Adjie, B., Ardli, E.R., Soe, M.K.K., Shan, W.K., Tung, N.X., Malekal, N.B.,Onrizal, Yllano, O.B., Meenakshisundaram, S.H., Salmo Iii, S.G., Watano, Y., Baba, S., Tateishi, Y. and Kajita, T. Phylogeography of Xylocarpus granatum.Meeting on Mangrove ecology, functioning and Management – MMM3 is jointly organised by the Vrije Universiteit Brussel (VUB), the Université Libre de Bruxelles (ULB), the University of Ruhuna (UoR) and the Kenya Marine and Fisheries Research Institute (KMFRI) in Galle, Sri Langka, 2-6 July 2012
2012 Onrizal. Potret Habitat, Keanekaragaman Hayati dan Perlindungan Kehidupan. Disampaikan pada Workshop Koordinasi Konservasi Keanekaragaman Hayati di Sumatera Utara. Diselenggarakan oleh Badan Lingkungan Hidup Provinsi Sumatera Utara, Hotel Madani, Medan, 28 Juni 2012
2012 Darma Bakti, Hasanuddin, Onrizal. The impact of climate change on population of coffee crop pests and diseases in Northern Sumatra. Makalah Disampaikan pada International Seminar  : Balanced Nutrition and Sustainable Soil Fertility Management in Arabica Coffee Production in North Sumatera and Aceh. Diselenggarakan oleh AMARTA dan Program Pascasarjana FP USU, Medan, 22 Mai 2012.
2012 Onrizal. Kandungan Karbon Kebun Kopi dan Peranannya dalam Mitigasi Perubahan Iklim. Seminar Nasional Dampak Perubahan Iklim Terhadap Produktivitas Kopi. Diselenggarakan oleh CI dan FP USU, Medan 18 April 2012

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Publikasi pada jurnal ilmiah tahun 2012 (sampai September)

  1. Yoshimi Shinmura, Alison K. S. Wee, Koji Takayama, Takeshi Asakawa, Orlex Baylen Yllano, Severino G. Salmo III, Erwin Riyanto Ardli, Nguyen Xuan Tung, Norhaslinda Binti Malekal,Onrizal, Sankararamasubramanian Halasya Meenakshisundaram, Sarawood Sungkaew, M. Nazre Saleh, Bayu Adjie, Khin Khin Soe, Emiko Oguri, Noriaki Murakami, Yasuyuki Watano, Shigeyuki Baba, Edward L. Webb, Tadashi Kajita. 2012. Development and characterization of 15 polymorphic microsatellite loci in Sonneratia alba (Lythraceae) using next-generation sequencing. Conservation Genetic Resources** 4 (3): 811-814. DOI 10.1007/s12686-012-9650-5 (Link:http://www.springerlink.com/content/q0319h1u96128738/)
  2. Yoshimi Shinmura; Alison K. S. Wee; Koji Takayama; Sankararamasubramanian Halasya Meenakshisundaram; Takeshi Asakawa; Onrizal; Bayu Adjie; Erwin Riyanto Ardli; Sarawood Sungkaew; Norhaslinda Binti Malekal; Nguyen Xuan Tung; Severino G. Salmo III; Orlex Baylen Yllano; M. Nazre Saleh; Khin Khin Soe; Emiko Oguri; Noriaki Murakami; Yasuyuki Watano; Shigeyuki Baba; Edward L. Webb; Tadashi Kajita. Isolation and characterization of 14 microsatellite markers for Rhizophora mucronata (Rhizophoraceae) and their potential use in range-wide population studies. Conservation Genetic Resources**. DOI 10.1007/s12686-012-9681-y (Link:http://www.springerlink.com/content/a1825j57742705j4/)
  3. Onrizal. Tujuh Tahun Pasca Tsunami 2004: Profil Pemulihan Mangrove Aceh. Warta Konservasi Lahan Basah 20 (3): 4-6; 16-17 (Link: https://onrizal.files.wordpress.com/2012/07/vol-20-no-3-juli-2012.pdf)

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Potret Habitat, Keanekaragaman Hayati dan Perlindungan Kehidupan*

Oleh: Onrizal

Kita dan Sumberdaya Alam

> 2/3 pelayanan ekosistem dunia telah mengalami penurunan (MEA, 2005)

Sumatera dan Keanekaragaman Hayati
> Sumatera bagian dari Sundaland Biodiversity Hotspot, satu dari 34 wilayah di dunia dengan biodiversitas dan endemisitas yang sangat tinggi, namun tingkat ancaman juga sangat tinggi
Kehilangan Hutan Sumatera Sebagai Habitat dari Keanekaragaman Hayati
> 5 juta ha dalam kurun waktu 1990-2000 atau 25% dari luas hutan hilang dalam kurun waktu 10 tahun tersebut.
Kehilangan hutan di Sumatera Utara
> Total Luas Lahan : 7.202.128,50 ha
> Laju deforestasi (2000-2003): 317.589,12 ha/tahun
Dampak Kerusakan Hutan Terhadap Keanekaragaman Hayati
> Orangutan Sumatera
> Harimau Sumatera
> Gajah Sumatera
Konservasi Keanekaragaman Hayati ~ Konservasi Habitat (Hutan) ~ Perlindungan Kehidupan
Kesimpulan dan Saran
> Sangat penting menjadikan ekosistem alam dan daerah aliran sungai sebagai basis perencanaan pembangunan

> Kerjasama setara dan saling menguntungkan antar daerah yang wilayahnya beririsan baik karena ekosistem alam maupun daerah aliran sungai
*Disampaikan pada Workshop Koordinasi Konservasi Keanekaragaman Hayati di Sumatera Utara. Dilaksanakan oleh Badan Lingkungan Hidup Propinsi Sumatera Utara di Hotel Madani, 29 Juni 2012

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McIvor, A.L., Möller, I., Spencer, T. and Spalding. M. (2012) Reduction of wind and swell waves by mangroves. Natural Coastal Protection Series: Report 1. Cambridge Coastal Research Unit Working Paper 40. Published by The Nature Conservancy and Wetlands International. 27 pages. ISSN 2050-7941.

Download the report

Mangrove work by Wetlands InternationaI: http://www.wetlands.org/mangroves

Mangrove work by TNC: http://www.naturalcoastalprotection.org and http://coastalresilience.org

Executive Summary

Coastal populations are particularly vulnerable to the impacts of extreme events such as storms and hurricanes, and these pressures may be exacerbated through the influence of climate change and sea level rise. Coastal ecosystems such as mangrove forests are increasingly being promoted and used as a tool in coastal defence strategies. There remains, however, a pressing need to better understand the roles that ecosystems can play in defending coasts. This report focuses on mangrove forests and the role they can play in reducing wind and swell waves. While mangrove forests are usually found on shores with little incoming wave energy, they may receive larger waves during storms, hurricanes and periods of high winds. Large wind and swell waves can cause flooding and damage to coastal infrastructure. By reducing wave energy and height, mangroves can potentially reduce associated damage.

All evidence suggests that mangroves can reduce the height of wind and swell waves over relatively short distances: wave height can be reduced by between 13 and 66% over 100 m of mangroves. The highest rate of wave height reduction per unit distance occurs near the mangrove edge, as waves begin their passage through the mangroves.

A number of characteristics of mangroves affect the rate of reduction of wave height with distance, most notably the physical structure of the trees. Waves are most rapidly reduced when they pass through a greater density of obstacles. Mangroves with aerial roots will attenuate waves in shallow water more rapidly than those without. At greater water depths, waves may pass above aerial roots, but the lower branches can perform a similar function.  The slope of the shore and the height of the waves also affect wave reduction rates through mangroves.

To understand the level of protection provided by mangroves, and to plan how to increase it, the passage of waves through mangroves has been modelled numerically using both a standard wave model used by coastal engineers called SWAN (Simulating WAves Nearshore) (Suzuki et al., 2011), as well as a model developed specifically for waves in mangroves called WAPROMAN (WAve PROpagation in MANgrove Forest) (Vo-Luong and Massel, 2008). These models are able to predict typical levels of wave attenuation given a knowledge of the mangrove characteristics, the wave parameters and the local bathymetry and topography. A statistical model has also been developed to explore the relationship between some standard forest measurements (tree height, tree density and canopy closure) and wave attenuation with distance (Bao, 2011). This model has been able to predict wave reduction within the Vietnamese mangroves where it was developed, and could be used to determine the width of mangrove belt needed to deliver a predefined level of protection from waves.

While there is a general confirmation that mangroves can attenuate wind and swell waves, research has focused on small waves (wave height < 70 cm), and there is a need to measure the attenuation of larger wind and swell waves associated with greater water depths, which may occur during storms and cyclones. More datasets are also needed to test the wider validity of the existing wave models under different wave conditions and in areas with different types of mangrove forest and different topographies.

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Masih ingin mengkonversi mangrove tanpa pertimbangan ilmiah?

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