Estimation of underground river water availability based on rainfall in the Maros karst region, South Sulawesi

The Unhas KKN-PPM program aims to provide a comprehensive understanding to local communities, who live in the Rammang-Rammang Karst tourist attraction area in Salenrang Village, Maros Regency, about the importance of standardization and certification of tourism businesses so that the Rammang-Rammang Karst tourism object can be managed by the community. locally professionally. In addition, this program also aims to provide assistance to the local community to communicate their needs related to the procurement of more complete tourism facilities and infrastructure to the Regional Government of Maros Regency and the Regional Government of South Sulawesi Province. The mission to be achieved is that the community is expected to be able to actively participate in the development and promotion of tourism in the Rammang-Rammang Karst tourist attraction so that later it can make this destination an international tourism destination that brings in many foreign tourists. With this, the potential and economic contribution of the Rammang-Rammang Karst tourism object can be maximized for the welfare of local communities and increasing state income.

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Water availability and river water quality

10.1007/springerreference_30492 ◽

2011 ◽

Keyword(s):

Water Quality ◽

River Water ◽

Water Availability ◽

River Water Quality

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Controlling factors of underground river system of karst region in Pacitan Regency, East Java

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/311/1/012033 ◽

2019 ◽

Vol 311 ◽

pp. 012033

Author(s):

A S Bahri ◽

P V Hardyani ◽

W Utama ◽

A Hilyah ◽

M S Purwanto ◽

...

Keyword(s):

River System ◽

Controlling Factors ◽

Karst Region ◽

Underground River

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Medium-term effect of fertilizer, compost, and dolomite on cocoa soil and productivity in Sulawesi, Indonesia

Experimental Agriculture ◽

10.1017/s0014479721000132 ◽

2021 ◽

pp. 1-18

Author(s):

Thomas Fungenzi ◽

Ruben Sakrabani ◽

Paul J. Burgess ◽

Smilja Lambert ◽

Peter McMahon

Keyword(s):

Water Availability ◽

Management Practices ◽

C:N Ratio ◽

Organic Amendments ◽

Term Effect ◽

Medium Term ◽

Future Studies ◽

South Sulawesi ◽

Physical Changes ◽

Positive Effect

Abstract In Indonesia, management practices that reduce soil fertility could be limiting cocoa (Theobroma cacao L.) production. To address this, we investigated the effects of fertilizers and organic amendments comprising different combinations of NPK + urea, dolomite, and manure-based compost on soil properties and cocoa productivity. We extended an existing field experiment in South Sulawesi, Indonesia, to assess these treatments’ effects on cocoa trees from the age of 2.9 years to 7.4 years. The treatments were first applied 5 months after planting and subsequently twice a year. Soil analyses were performed before planting, after 3 years, and finally after 7 years. Productivity was assessed yearly between the age of 3.5 and 7.4 years. The highest yields were obtained from the plots receiving compost, although the yield benefits diminished over time. Inorganic fertilizer alone doubled the yield compared to the control, while the yields with compost and compost + fertilizer were three times that of the control. With dolomite alone, the yield cumulated over 4 years was 41% higher than the control. The positive effect of compost on cocoa yields can potentially be attributed to (1) physical changes increasing soil water availability, (2) the chemical improvement of nutrient availability, and (3) biologically, by promoting the activity of beneficial organisms. The application of dolomite increased soil pH, Ca, and Mg contents. Soil organic carbon greatly declined in the composted treatments, even though 10 kg of compost was applied per tree per year, probably because of the low C:N ratio of the compost. Future studies should assess different fertilizer formulations and combinations with organic inputs and explore the mechanisms by which compost promotes cocoa productivity.

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The contribution of CO2 content in rainfall to dissolution process in karst area

10.31227/osf.io/vr3wf ◽

2017 ◽

Author(s):

Tjahyo Nugroho Adji ◽

Novi Rahmawati

Keyword(s):

Water Quality ◽

River Water ◽

Rainy Season ◽

Karst Area ◽

Dissolution Process ◽

Dominant Process ◽

Underground River ◽

One Year ◽

Quality Measurements

As one of greenhouse gases, CO2 content in rainfall is has correlation with CO2 contentin atmosphere. The higher content of CO2 in rainfall will accelerate dissolution processin karst landscape. The aims of this research are to define water quality of rainfall, to determinewater quality of underground river in Bribin, and to analyze the trend of CO2content in rainfall and CO2 content in underground river. Water quality measurements ofrainfall and underground river in karst area was performed during one year in dry seasonand rainy season to compare the rainfall contribution in CO2 content in undergroundriver of Bribin.Based on the result of this research shows that rainfall accelerate CO2 content in undergroundriver that resultintensive dissolution in karst area of Bribin.Water-rock-gas interactionis used to define CO2 contribution from rainfall. Dissolution process is much intensivein rainy season that shows dominant water-rock-gas interaction due to dilution byMiscellaneous topics 193precipitation. In the end of rainy season, the influence of rainfallas the contribution ofCO2 content in river is much less. In dry season, the dominant process in river iswaterrockinteraction due to lack of CO2 from rainfall so that dissolution process will be decreased.

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WATERS CARRYING CAPACITY FOR DEVELOPMENT OF SEAWEED CULTURE OF Eucheuma cottonii IN LUWU AND PALOPO DISTRICTS, BONE BAY, SOUTH SULAWESI

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.29244/jitkt.v8i2.15802 ◽

2017 ◽

Vol 8 (2) ◽

pp. 469-492

Author(s):

. Waluyo ◽

. Yonvitner ◽

Etty Riani ◽

Taslim Arifin

Keyword(s):

Land Use ◽

Carrying Capacity ◽

Water Availability ◽

Ecological Footprint ◽

Sustainable Use ◽

Ecological Status ◽

Availability Analysis ◽

South Sulawesi ◽

Eucheuma Cottonii ◽

Seaweed Culture

In seaweed Eucheuma cottonii cultures, a water carrying capacity is an important factor to optimize the seaweed culture. Carrying capacity can be determined by an ecological footprint production (EFp) analysis. This research was conducted in May 2015 (1st transitional season) and September 2015 (2nd transitional season) in Luwu and Palopo distircts, South Sulawesi. Map and land use were analyzed using GIS (Geographic Information Systems). The result showed that the ecological foot-print production (EFP) in Luwu waters was 67.88 ton/capita/year or equivalent to 235,823.93 tons/ year. However, based on the analysis of the water availability for seaweed was 59,781.79 hectares, it can produce seaweed (biocapacity) for 1,437,779.60 tons/year and the number of farmers that allows for use the waters is 21,432 capita. The ecological footprint production (EFp) in Palopo waters is 3.08 ton/capita/year, or equivalent to 4,589.99 tons/year. Water availability analysis is 1,771. 41 hectares are able to produce seaweed (biocapacity) for 18,287.46 ton/year and the number of far-mers that allows for use the waters is 635 farmers capita. The results comparison between biocapa-ci-ty and ecological footprint, ecological status for Luwu and Palopo waters are still in sustainable use.

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WATERS CARRYING CAPACITY FOR DEVELOPMENT OF SEAWEED CULTURE OF Eucheuma cottonii IN LUWU AND PALOPO DISTRICTS, BONE BAY, SOUTH SULAWESI

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.28930/jitkt.v8i2.15802 ◽

2017 ◽

Vol 8 (2) ◽

pp. 469

Author(s):

. Waluyo ◽

. Yonvitner ◽

Etty Riani ◽

Taslim Arifin

Keyword(s):

Land Use ◽

Carrying Capacity ◽

Water Availability ◽

Ecological Footprint ◽

Sustainable Use ◽

Ecological Status ◽

Availability Analysis ◽

South Sulawesi ◽

Eucheuma Cottonii ◽

Seaweed Culture

In seaweed Eucheuma cottonii cultures, a water carrying capacity is an important factor to optimize the seaweed culture. Carrying capacity can be determined by an ecological footprint production (EFp) analysis. This research was conducted in May 2015 (1st transitional season) and September 2015 (2nd transitional season) in Luwu and Palopo distircts, South Sulawesi. Map and land use were analyzed using GIS (Geographic Information Systems). The result showed that the ecological foot-print production (EFP) in Luwu waters was 67.88 ton/capita/year or equivalent to 235,823.93 tons/ year. However, based on the analysis of the water availability for seaweed was 59,781.79 hectares, it can produce seaweed (biocapacity) for 1,437,779.60 tons/year and the number of farmers that allows for use the waters is 21,432 capita. The ecological footprint production (EFp) in Palopo waters is 3.08 ton/capita/year, or equivalent to 4,589.99 tons/year. Water availability analysis is 1,771. 41 hectares are able to produce seaweed (biocapacity) for 18,287.46 ton/year and the number of far-mers that allows for use the waters is 635 farmers capita. The results comparison between biocapa-ci-ty and ecological footprint, ecological status for Luwu and Palopo waters are still in sustainable use.

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EXCAVATION REPORT FOR LEANG RAKKOE: A NEW TOALEAN SITE WITH ENGRAVED ART IN THE BOMBORO VALLEY, MAROS REGENCY, SOUTH SULAWESI

JURNAL WALENNAE ◽

10.24832/wln.v18i1.427 ◽

2020 ◽

Vol 18 (1) ◽

pp. 51-64

Author(s):

Yinika Lotus Perston ◽

Iwan Sumantri ◽

Budianto Hakim ◽

Adhi Agus Oktaviana ◽

Adam Brumm

Keyword(s):

Karst Region ◽

South Sulawesi ◽

The Rich ◽

A Site ◽

Stone Artefact ◽

Cave Art

Kumpulan pra-Neolitik di Sulawesi Selatan didominasi oleh endapan dari periode Toala, namun demikian sifat dan luas teknokultur Toala masih mengandung teka-teki. Hingga saat ini, kronologi dari teknologi Toala masih belum jelas dan belum ada karya seni yang bisa dikaitkan dengan periode ini, meskipun terdapat seni gua dengan gambar cadas di wilayah Karst Kabupaten Maros dan Pangkep. Ekskavasi dilakukan di ceruk Leang Rakkoe, di Lembah Bomboro Maros, dengan tujuan untuk membantu mengklarifikasi masalah ini. Sementara itu, endapan tersebut terbukti tidak stabil dan tidak bisa dilakukan penanggalan, penggalian ini memberikan wawasan baru tentang teknik pembuatan artefak batu Toala pada situs dengan contoh-contoh seni pahat yang sebelumnya tidak didokumentasikan. South Sulawesi's pre-Neolithic assemblages are dominated by Toalean-period cultural deposits, however the nature and extent of the Toalean technoculture continues to be enigmatic. To date, the chronology of Toalean technology remains unclear, and no art has yet been attributed to this period despite the rich cave art of the karst region of the Maros and Pangkep regencies. An excavation was conducted at Leang Rakkoe rockshelter, in the Bomboro Valley of Maros, in the hope that it could help clarify these issues. While the deposits proved unstable and could not be directly dated, the excavation did provide new insights into Toalean stone artefact manufacture techniques at a site containing previously-undocumented examples of engraved art.

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THE DISTRIBUTION OF FLOOD HYDROGRAPH RECESSION CONSTANT FOR CHARACTERIZATION OF KARST SPRING AND UNDERGROUND RIVER FLOW COMPONENTS RELEASING WITHIN GUNUNG SEWU KARST REGION

10.31227/osf.io/nz3we ◽

2017 ◽

Author(s):

Tjahyo Nugroho Adji ◽

M Misqi

Keyword(s):

River Flow ◽

Karst Aquifer ◽

Maximum Flow ◽

Karst Area ◽

Karst Region ◽

Karst Spring ◽

Flood Hydrograph ◽

Flow Components ◽

Underground River ◽

Recession Constant

TThis research is carried out within two caves with underground river and one karst spring, which is locatedin Gunung Sewu karst area, Gunung Kidul. The objective of this research is to recognize some flood hydrograph properties of karst aquifer characterization in order to compare the comportment of aquifer to release its flow components between underground river and karst spring. Water level data loggers are installed within two caves and one karst spring represent upper, middle, and lower elevation of karst topography, which are Beton, Seropan, and Toto Cave, respectively. In addition, time series discharge measurement in correspond to minimum, average, and maximum flow events is conducted to formulate the Annual Stage Discharge Rating Curve. Thereby, the full year river hydrograph may be defined.Afterwards, by selecting several flood hydrograph events, the recession constant in each cave includingdiffuse flow (Kb), fissure flow (Ki), and conduit flow (Kc) recession constant, is then calculated andcompared in every location. The result shows that Beton Spring that represents the upper part of researcharea confirms the quickest respond towards rainfall events. Also, this point specifies the medium numberof diffuse recession constant (Kb=0.983), compared to Seropan (0.996), and Toto (0.937), means that theaquifer surrounding Toto Cave release its groundwater storage faster than Beton Spring and SeropanCave. On the contrary, Seropan Cave performs the highest value of diffuse recession constant (0.996) andthis situation is confirmed by its dry season discharge that still above 810 lt/second

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