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PRELIMINARY STUDY OF WATER AVAILABILITY RELATED TO IMPACT OF CLIMATE CHANGE (CASE STUDY: TANJUNG API-API PORT AREA, BANYUASIN VALLEY)

PRELIMINARY STUDY OF WATER AVAILABILITY RELATED TO IMPACT OF CLIMATE CHANGE (CASE STUDY: TANJUNG API-API PORT AREA, BANYUASIN VALLEY)

1Yunan Hamdan, 2Budhi Setiawan, 2Dwi Setyawan, and 2Azhar. K. Afiiandi

1Doctoral Candidate of Environmental Program, Sriwijaya University. Jln. Padang Selasa no. 524 Palembang-South Sumatra.Email: yunanhamdani@ymail.com

2Doctor of Environmental Doctoral Program, Sriwijaya University and Adivisor Commission

Abstract. Climate change as impact of global warming could exacerbate the decline in environmental quality as a result of drought risk, water reduced availability and flooding. To determine the raw water quality conditions that can be used for clean water on site research conducted sampling at five locations in region Banyuasin Valley. The locations are port of Tanjung Api-Api, Sungsang Village Banyuasin District II. Karang Anyar village, Sritiga village of Muara Telang District Sritiga Telang, and Canal Sebalik. Banyuasin Valley is a supporting region of Port Tanjung Api-api. It is one of the most vulnerable areas in Southeast Asia. Methods in this study consisted of three stages namely: 1) inventory data, sampling time at the lowest tide, average tide and the highest tide.2) Analysis sampling test, sampling laboratory test performed to determine levels of salinity electrical conductivity and turbidity, develop meso level (regional level) of vulnerability assessment to micro level (local/cities level) and provide information about vulnerability level of community at Banyuasin Valley. 3) Results and discussion. The test results in laboratory, field measurements, and calculations of water volume and water needs concluded that the site Canal Sebalik could meet water needs for the population and industry in the region.

INTRODUCTION

South Sumatra Provinces is an area particularly vulnerable to climate change to sea-level rise, extreme waves, ocean currents, rising temperature, increased frequency of extreme events such as El-nino and La nina, changes in rainfall. Precipitation, sea level rise, and extreme waves cause flood, inundation, erosion and deposition, and salt water intrusion, and impact on water resources, agriculture and forestry, health, and infrastructure (KRAPI South Sumatra, Bappenas, GIZ 2012).

PREDATORY ARTHROPODS ON FRESH SWAMP PADDY FIELD APPLIED WITH MYCOINSECTICIDE AND SYNTHETIC INSECTICIDE

PREDATORY ARTHROPODS ON FRESH SWAMP PADDY FIELD APPLIED WITH MYCOINSECTICIDE AND SYNTHETIC INSECTICIDE

1,2*)Siti Herlinda, 1David Afriansyah Putra, 1Chandra Irsan, 1Yulia Pujiastuti, and 1Rosdah Thalib

1Department of plant pests and Diseases. College of Agriculture, Sriwijaya University. Palembang-South Sumatra.

2Researcher at Research Center for Sub-optimal Lands (PUR-PLSO). Sriwijaya University. Palembang-South Sumatra

*)Corresponding author: Telp. +62711580663, Fax. +62711580276, Email: sitiherlinda@unsri.ac.id, sitiherlinda@drn.go.id

Abstract. This research was carried out on paddy field of fresh swamp in Musi Banyuasin from july up to Desember 2011. The objective of this research was to compare the abundance and species number of the predatory-arthropods inhabiting paddy fields applied with mycoinsecticide and synthetic insecticide. The canopy-inhabiting and soil-dwelling predatory arthropods were sampled using net and pitfall traps, respectively. The predatory arthropods found were predatory insect and spiders. The canopy-inhabiting arthropods found were Coccinelidae, Tetragnatidae, and Oxyopidae, and the soil-dwelling arthropods found were Carabidae, Formicidae, Labiidae, and Lycosidae. Results indicated that the arthropods inhabiting paddy field applied with mycoinsecticide had the higher abundance and species number compared to the field applied with synthetic insecticide. The population of pest insects found on the paddy field applied with mycoinsecticide was lower than that applied with the synthetic insecticide. The most important pest insect  found on paddy field of fresh swamp in Musi Banyuasin was the rice gundhi bug (Leptocoriza acuta) and the most dominant predatory-arthropods found were pardosa Pseudoannulata and Pheropsophus accipitalis.

Keywords: Predatory  Arhropods, Paddy, Fresh Swamp, Mycoinsecticide

INTRODUCTION

There is a constraint from attack of interferer organisms such as pests in rice crop cultivation. The dominant pests found in rice crop consisted of rice stem borer (Wilyus et al. 2012), brown planthopper, rice green leafhopper, and rice gundhi bug (Tandiabang et al. 2001; IRRI 2003). Population of these pests is controlled by their natural predator, especially arthropod predator.