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A Study of Flood Causal Priority in Arui Watershed, Manokwari Regency, Indonesia Mahmud Mahmud; Ambar Kusumandari; Sudarmadji Sudarmadji; Nunuk Supriyatno
Jurnal Manajemen Hutan Tropika Vol. 24 No. 2 (2018)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (13.102 KB)

Papua is the final fortress of forests in Indonesia. However, floods recently occurred in Jayapura, Paniai, and Manokwari. If causal factors are not identified and early anticipated, the flood will become an annual disaster with more severe impacts. This study aims to identify main factors causing floods using scoring analysis. Data collected include: rainfall, river gradient, water discharge, drainage density, watershed shape, slope and land use. The research results show that the main factor of floods are average daily rainfall in wet month by 86.53 mm day-1 (rather high) with a score of 28, land use dominated by forest and plantation (rather low and medium) with a score of 21, watershed slope dominated by 1-<8% (high) with a score of 5, drainage density of 6.4 (medium) with a score of 3, watershed shape (Rc of 0.30 < Re 0.71) with somewhat/elongated shape with a score of 2, and river gradient of 0.0062 (low) with a score of 2 respectively. High rainfall causes greater flow of water and runoff. Land use dominated by plantations (21.46%) is thought to be one of the main causes of floods in Masni District. Flood mitigation does not mean that rain should be reduced, but regulates/manages such as stopping the conversion of forest into palm oil plantations, reducing surface runoff by applying soil conservation, making bypass from meandering, dredging sediments, and constructing retaining walls.

KEANEKARAGAMAN SPESIES KUPU-KUPU (LEPIDOPTERA:RHOPALOCERA) DI SAVANA PRINGTALI RESORT BANDEALIT TAMAN NASIONAL MERU BETIRI Rendy Setiawan; Arif Mohammad Siddiq; Sudarmadji sudarmadji; Nindy Agusti Wulansari
BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan) Vol 5, No 2 (2019): Februari
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/biolink.v5i2.1786

Butterfly is the insect that the existence is determined by the ability of their distribution and adaptation towards the environmental factor. The decrease of the plant species diversity in a habitat will affect the diversity of the butterfly species. One of the buterflies habitat which experinces the degradation of species diversity is Resort Bandealit which some parts of the region are designated as the habitat of Invasive plants. The aim of this study is to know the composition and diversity of butterfly species in the pringtali Savannah Resort Bandealit Meru Betiri national park. The method used in the data collection is the road sampling method. The road sampling method is done by walking and counting spesimen which were collect by active collection. Exploration is carried out by walking along the five cruise lines with a length of each path is 100 m in Savana Pringtali Meru Betiri National Park. The composition and diversity species of butterfly is a 11 species represented from 3 family and 10 genus. The four most common species of butterflies found in the study area are Jamides pura, Ypthima Philomela, Leptosia nina, and Eurema hecabe.

PERBAIKAN TANAMAN KAPAS GENJAH MELALUI PERSILANGAN DIALLEL Sudarmadji Sudarmadji; Rusim Mardjono; Hadi Sudarmo
Jurnal Penelitian Tanaman Industri Vol 12, No 1 (2006): MARET 2006
Publisher : Pusat Penelitian dan Pengembangan Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jlittri.v12n1.2006.1-6

ABSTRAKPenelitian ini bertujuan untuk meningkatkan potensi hasil danmemperpendek umur panen kapas genjah melalui kombinasi hibrida (F 1 )dibandingkan dengan rata-rata kedua tetuanya. Penelitian dilakukan diKebun Percobaan Asembagus Kabupaten Situbondo mulai bulan Maretsampai Juli 2003. Penelitian menggunakan rancangan acak kelompokdengan tiga ulangan yang terdiri dari 16 genotipe (4 tetua, 6 turunanpertama, 6 turunan pertama kebalikan). Keempat genotipe tetua adalah KI40, KI 74, KI 87 dan KI 121. 6 genotipe turunan pertama adalah KI 40 xKI 74, KI 40 x KI 87, KI 40 x KI 121, KI 74 x KI 87, KI 74 x KI 121 danKI 87 x KI 121, sedangkan 6 genotipe turunan pertama kebalikannyaadalah KI 74 x KI 40, KI 87 x KI 40, KI 87 x KI 74, KI 121 x KI 40, KI121 x KI 74 dan KI 121 x KI 87. Sifat-sifat yang diamati meliputi tinggitanaman, umur pertama bunga mekar, jumlah cabang generatif, jumlahbuah terpanen, umur panen pertama, umur panen terakhir dan hasil kapasberbiji. Data hasil penelitian ini dianalisis dengan analisis ragam padarancangan acak kelompok yang menghasilkan nilai Harapan KuadratTengah untuk asumsi Metode I dan Model I menurut GRIFFING (1956),sedangkan untuk mengetahui tinggi dan rendahnya daya gabung umum,khusus, dan pengaruh kebalikan dari efek tersebut menggunakan Model I(SINGH dan CHAUDHARY, 1979). Hasil penelitian menunjukkan bahwatetua KI 40 merupakan penggabung yang baik karena memiliki dayagabung umum yang tinggi untuk parameter hasil kapas berbiji dan dayagabung umum yang rendah untuk parameter umur panen terakhir.Kombinasi persilangan genotipe KI 40 x KI 87 maupun genotipe KI 87 xKI 40 memiliki daya gabung khusus tinggi untuk parameter hasil kapasberbiji dan daya gabung khusus yang rendah pada parameter umur panenterakhir. Ini menunjukkan bahwa KI 40 dapat digunakan sebagai tetuabetina untuk memperbaiki produksi kapas berbiji dan persilangan antara KI40 x KI 87 adalah kombinasi terbaik untuk tujuan tersebut.Kata kunci : Kapas, Gossypium hirsutum, persilangan, hibrida, produksi,umur panen, Jawa TimurABSTRACTImprovement of cotton plant through diallel crossingThe objective of this research is to find out the yield potency and toshorten the harvest age of early maturity cotton through hybridcombinations compared with both parents. This research was conducted atAsembagus Research Station, Indonesian Tobacco and Fiber ResearchInstitute Crops (IToFRIC), from March to July 2003. The research used arandomized block design with three replications consisting of sixteengenotypes (four parents, six F 1 generations, and six reciprocal generations).The four parent genotypes were KI 40, KI 74, KI 87, and KI 121. The sixF 1 generation genotypes were KI 40 x KI 74, KI 40 x KI 87, KI 40 x KI121, KI 74 x KI 87, KI 74 x KI 121 and KI 87 x KI 121, while the six F 1reciprocal generations were KI 74 x KI 40, KI 87 x KI 40, KI 87 x KI 74,KI 121 x KI 40, KI 121 x KI 74 and KI 121 x KI 87. The charactersobserved were plant height, the first bloom of flowering date, number ofbranch, the harvested number of fruit, the first harvesting date, the lastharvesting date and cotton yield. The analysis used method I and model Iof GRIFFING (1956), while to evaluate general combining ability effect,specific combining ability effect, and reciprocal effect used model I ofSINGH and CHAUDHARY (1979). The research result indicated thatparent genotype KI 40 had high general combining values for cotton yieldparameter, and had low general combining values for last harvest age.Combinations of genotype crossing KI 40 X KI 87 and genotype of KI 87X KI 40 had high specific combining values for cotton yield, had lowspecific combining ability values for last harvest age. This indicated thatKI 40 can be used as parent to improve seed cotton yield, and the crossbetween KI 40 x KI 87 was the best combination for this purpose.Key words : Cotton, Gossypium hirsutum, crossing, hybrid, production,harvest age, East Java

PHYSICAL WATER QUALITY RESPONSE TO RAINFALL OF BETON KARST SPRING AT GUNUNGKIDUL REGENCY - YOGYAKARTA INDONESIA M. Widyastuti; Sudarmadji Sudarmadji; Sutikno Sutikno; Heru Hendrayana
Indonesian Journal of Geography Vol 44, No 1 (2012): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.2389

Beton karst spring is located in the Ponjong sub District Gunungkidul Regency, at thewestern part of Bribin undergorund river catchment area. The purpose of this study are: 1) toknow the variations of rainfall and discharge in the research area, 2) to know thecharacteristics of the physical water quality of Beton spring and 3) to determine therelationship between the variations of the rainfall toward the discharge and the physicalwater quality of Beton spring. This study uses survey methods and the techniques of datacollection using sample by purposive sampling. The variables are rainfall (the depth andintensity), spring discharge and physical water quality of spring (EC, T, TDS, turbidity). Thedata analysis is conducted graphically and descriptively to explain the relationship betweenthe variations of rainfall to the discharge and physical water quality of spring. The resultsshow the rainfall has variations include the pattern, events and the amount of rainfall. Betonspring has high discharge variations. The physical water quality of the spring meets to thewater quality standards according to the Government Regulation number 82 years 2001. Thestrong correlation between rainfall variations to the discharge and the physical water qualityof Beton spring can be seen clearly. It is reflected from the high value of R2.

Identification of Environment Chase in Surround of Sermo Reservoir; and the Inﬂuence Possibility for Function and at the Age of Reservoi Sudarmadji Sudarmadji
Forum Geografi Vol 16, No 1 (2002)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v16i1.410

Sermo reservoir is the only one belongs to Yogyakarta Special Province; it is relatively a new reservoir with the area of 1.9 kilometer square and its capacity of 25 million cubic meter: It started to operate since 1996 as flood control, irigation, water supply, tourism and ﬁshery purposes. As a reservoir it could be considered to be a manmade lake, as its condition nearly similar to a lake. Since it operated (even during construction period) there were some significant environmental changes within the reservoir and in the area around the reservoir due to the human activities. These changes could threat the sustainability of the reservoir itselfThis research aims to identiﬂr the human activities living around the reservoir and visitors coming to the area, and to evaluate the potensial of the activities to produce wastes which is discharging in into the reservoir; which may threat the sustainability of the reservoir: The observatorium in the ﬁeld has been conducted in the area of the reservoir and its sorrounding. I t was ﬁrund ﬁom the observation that activities o f ﬁshery using net (karamba), tourism altogether with its facilities, land use around the reservoir for agriculture purposes, mining of class C ore, have given a lot of contribution to wastes (liquid and solids) and sediments into the reservoir: Those activities may cause water quality of the reservoir lo decrease as well as reducing the reservoir depth. Those situation was observed in the northern and north western parts of the reservoir Water quality degradation of the reservoir may threat reservoir as source of domestic water supply, while the sedimentation may reduce the life time of the reservoir The fishery and tourism activities was estimated as a main cause of water quality degradation, beside agricultural and domestic wastes originated from sattlement area around the reservoir: Sediments coming into the reservoir are derived ﬁom transported and movement of materials from land slide occuring around the reservoir; due to distruction of land in constructing the relatively new ring-road close to the shore line of the reservoir: Of course, the sediment is also coming from rivers enteringdie reservoir. Sermo reservoir is a relatively young reservoir; the early observation of environmental changes of the reservoir could hopely be used as indicator to study ecological changes of the area within and around of the reservoir; and could be used as a comparison to other reservoirs, as well as basic environmental management of the reservoir and its surrounding.

The Influence of Abiotic Factors on The Diversity and Abudance of Mangrove Crabs (Scylla spp.) in Blok Bedul Alas Purwo National Park Mangrove Forest Rina Sugiarti Dwi Gita; Sudarmadji Sudarmadji; Joko Waluyo
Jurnal ILMU DASAR Vol 16 No 2 (2015)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

The purpose of this study was to determine the diversity, abundance and abiotic factors influence the diversity and abundance of mud crab (Scylla spp.) In mangrove forests Blok Bedul Alas Purwo National Park. This research method uses descriptive quantitative method. Diversity is calculated by using the formula of Shannon Wiener, mangrove crab abundance is calculated using the formula abundance Kreb whereas the method of analysis using simple linear regression. The data used in this research is data such as the number and type of biotic mud crabs and data abiotic form of measurement of temperature, pH, salinity, substrate type, and the tide. This study shows the results include mangrove crab species diversity index of every observation stations in the mangrove forests Blok Bedul Alas Purwo National Park is H '= 0.315 showing that the level of diversity in every station is low. The abundance of mud crabs in the mangrove forests Blok Bedul Alas Purwo National Park is 0.0011 individuals / m² which showed that the level of abundance at relatively low research station. Results of the analysis of the influence of abiotic factors on the diversity and abundance of mud crabs in mangrove forests Blok Bedul National Park Alas Purwo not significant (p> 0.05) the diversity and abundance of mangrove crab. Keywords : abiotic factors , abundance , diversity , mud crab , regression

The spesies composition and distribution pattern of Gastropod at Forrest Mangrove Block Bedul Segoro Anak, Alas Purwo National Park Joko Swasono Adi; Sudarmadji Sudarmadji; Wachju Subchan
Jurnal ILMU DASAR Vol 14 No 2 (2013)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

This research aims to determine the spesies compossition and distribution pattern of Gastropod and its relationship with abiotic factors (pH, salinity, soil texture, and organic content of the soil, and the high of tide of the eustuary area) in the Mangrove forest at Blok Beduk Segoro Anak Alas Purwo National Park. This research was conducted on February 2013. Data was taken four times using a week time interval during one month. Every observation covered eight stations, where station 1 to station 4 consist of four transects and 40 plots, while station 5 to station 8 consist of 3 transects with 42 plots and each plot was 5 m × 5 m. Gastropod observed from each plot are preserved with 70% alcohol and identified in Malakologi Laboratory, Indonesian Institute of Sciences (LIPI). Results of the research reveated that the Gastropod observed consist of 19 families and 37 species, and the dominant family is Ceritidae. The Diversity index of Shanon Wiener was 0.53 (low deversity). Two available of Distribution pattern, group (Canarium labiatum, Cassidula nucleus, Cerithium coralium, Chicoreus brunneus, Cassidula vespertilionis, Cerithidea cingulata, Cerithidea quadrata, Chicoreus capucinus,Conus rattus, Conus striolatus, Ellobium aurisjudae, Littorina carinifera, Littorina scabra, Monodonta labio, Nassarius melanoides, Nassarius olivaceus, Nerita balteata, Nerita planospira, Nerita undata, Pugilina ternatana, Sphaerassiminea miniata, Telescopium telescopium, Terebralia sulcata, Thais intermedia), random (Angaria delphinus, Conus catus, Conus omaria, Cymatium moniliferum, Erronea errones, Oliva oliva, Polinices aurantius, Pollia undosa, Tectus pyramis, Trochus californicus, Turbo argyrostoma). The abiotic factors had relatianship not significantly (p = 0.067) on Gastropod distribution pattern. Keywords : Distribution pattern,Gastropod, species compossition

PERBAIKAN TANAMAN KAPAS GENJAH MELALUI PERSILANGAN DIALLEL Sudarmadji Sudarmadji; Rusim Mardjono; Hadi Sudarmo
Jurnal Penelitian Tanaman Industri Vol 12, No 1 (2006): MARET 2006
Publisher : Pusat Penelitian dan Pengembangan Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jlittri.v12n1.2006.1-6

ABSTRAKPenelitian ini bertujuan untuk meningkatkan potensi hasil danmemperpendek umur panen kapas genjah melalui kombinasi hibrida (F 1 )dibandingkan dengan rata-rata kedua tetuanya. Penelitian dilakukan diKebun Percobaan Asembagus Kabupaten Situbondo mulai bulan Maretsampai Juli 2003. Penelitian menggunakan rancangan acak kelompokdengan tiga ulangan yang terdiri dari 16 genotipe (4 tetua, 6 turunanpertama, 6 turunan pertama kebalikan). Keempat genotipe tetua adalah KI40, KI 74, KI 87 dan KI 121. 6 genotipe turunan pertama adalah KI 40 xKI 74, KI 40 x KI 87, KI 40 x KI 121, KI 74 x KI 87, KI 74 x KI 121 danKI 87 x KI 121, sedangkan 6 genotipe turunan pertama kebalikannyaadalah KI 74 x KI 40, KI 87 x KI 40, KI 87 x KI 74, KI 121 x KI 40, KI121 x KI 74 dan KI 121 x KI 87. Sifat-sifat yang diamati meliputi tinggitanaman, umur pertama bunga mekar, jumlah cabang generatif, jumlahbuah terpanen, umur panen pertama, umur panen terakhir dan hasil kapasberbiji. Data hasil penelitian ini dianalisis dengan analisis ragam padarancangan acak kelompok yang menghasilkan nilai Harapan KuadratTengah untuk asumsi Metode I dan Model I menurut GRIFFING (1956),sedangkan untuk mengetahui tinggi dan rendahnya daya gabung umum,khusus, dan pengaruh kebalikan dari efek tersebut menggunakan Model I(SINGH dan CHAUDHARY, 1979). Hasil penelitian menunjukkan bahwatetua KI 40 merupakan penggabung yang baik karena memiliki dayagabung umum yang tinggi untuk parameter hasil kapas berbiji dan dayagabung umum yang rendah untuk parameter umur panen terakhir.Kombinasi persilangan genotipe KI 40 x KI 87 maupun genotipe KI 87 xKI 40 memiliki daya gabung khusus tinggi untuk parameter hasil kapasberbiji dan daya gabung khusus yang rendah pada parameter umur panenterakhir. Ini menunjukkan bahwa KI 40 dapat digunakan sebagai tetuabetina untuk memperbaiki produksi kapas berbiji dan persilangan antara KI40 x KI 87 adalah kombinasi terbaik untuk tujuan tersebut.Kata kunci : Kapas, Gossypium hirsutum, persilangan, hibrida, produksi,umur panen, Jawa TimurABSTRACTImprovement of cotton plant through diallel crossingThe objective of this research is to find out the yield potency and toshorten the harvest age of early maturity cotton through hybridcombinations compared with both parents. This research was conducted atAsembagus Research Station, Indonesian Tobacco and Fiber ResearchInstitute Crops (IToFRIC), from March to July 2003. The research used arandomized block design with three replications consisting of sixteengenotypes (four parents, six F 1 generations, and six reciprocal generations).The four parent genotypes were KI 40, KI 74, KI 87, and KI 121. The sixF 1 generation genotypes were KI 40 x KI 74, KI 40 x KI 87, KI 40 x KI121, KI 74 x KI 87, KI 74 x KI 121 and KI 87 x KI 121, while the six F 1reciprocal generations were KI 74 x KI 40, KI 87 x KI 40, KI 87 x KI 74,KI 121 x KI 40, KI 121 x KI 74 and KI 121 x KI 87. The charactersobserved were plant height, the first bloom of flowering date, number ofbranch, the harvested number of fruit, the first harvesting date, the lastharvesting date and cotton yield. The analysis used method I and model Iof GRIFFING (1956), while to evaluate general combining ability effect,specific combining ability effect, and reciprocal effect used model I ofSINGH and CHAUDHARY (1979). The research result indicated thatparent genotype KI 40 had high general combining values for cotton yieldparameter, and had low general combining values for last harvest age.Combinations of genotype crossing KI 40 X KI 87 and genotype of KI 87X KI 40 had high specific combining values for cotton yield, had lowspecific combining ability values for last harvest age. This indicated thatKI 40 can be used as parent to improve seed cotton yield, and the crossbetween KI 40 x KI 87 was the best combination for this purpose.Key words : Cotton, Gossypium hirsutum, crossing, hybrid, production,harvest age, East Java

TRADISI DAN RELIGI SEBAGAI UPAYA KONSERVASI MATA AIR MASYARAKAT PERDESAAN: STUDI KASUS MASYARAKAT KECAMATAN GIRIMULYO, KABUPATEN KULON PROGO (Tradition and religion as means of the rural community in spring conservation: a case study of Girimulyo Distric, Kulon Progo Region) Sudarmadji Sudarmadji; Fajar Sugiarto; Ratna Destra Kurniasari; Indra Agus Riyanto; Ahmad Cahyadi; Sudrajat Sudrajat
Jurnal Penelitian Pengelolaan Daerah Aliran Sungai (Journal of Watershed Management Research) Vol 1, No 1 (2017): Jurnal Penelitian Pengelolaan Daerah Aliran Sungai (Journal of Watershed Managem
Publisher : Center for Implementation of Standards for Environmental and Forestry Instruments Solo

Tradition and religion interact closely to the rural community, which is shown in their culture. This concept was applied to spring conservation in the rural area. The objective of this research was to show the role of tradition and religion in the use of spring based conservation by rural community. This research used a case study method. Data were collected by field surveys and interviews. The respondents were chosen randomly because the characteristic of the community was homogenous. The results of this research showed that tradition and religion in form of cultural ritual called spring cleaning (nguras sumber) and “be grateful to God” (slametan) had been capable to keep the sustainability of water resources in the spring, both the quantities and qualities of water. Nguras Sumber and Slametan were directed by a traditional leader called “Juru Kunci” followed by the community. The water resources were used for domestic water consumption, tourism, agriculture, and livestock throughout the year, even excessive in the rainy season. Therefore, the culture of Nguras Sumber and Slametan could be maintained as a form of spring’s conservation.

PENGARUH VARIASI PENGGUNAAN LAHAN PADA BERBAGAI FORMASI GEOLOGI TERHADAP RESESI ALIRAN DASAR DI DAS WURYANTORO PROPINSI JAWA TENGAH Bokiraiya Latuamury; sudarmadji sudarmadji; slamet suprayogi
SPATIAL: Wahana Komunikasi dan Informasi Geografi Vol 17 No 1 (2017): Jurnal SPATIAL - Wahana Komunikasi dan Informasi Geografi, Volume 17 Nomor 1, Ma
Publisher : Department Geography Education Faculty of Social Science - Universitas Negeri Jakarta

In the environmental viewpoint, water and land characteristics are strongly influenced by some aspects such as layout, position, landscape development, natural factors and human activity impact.Spatial aspects of land and water resources are the asset of spatial-based national development. Land resources management need to consider the characteristic of both renewable and nonrenewable land resources.Hydrological characteristics is a result of interaction and interrelation of human socio-economic parameters with some watershed physical factors. Apart from that, besides land use as physical factors, there are some other factors such as morphometry, lithology, geomorphology and geology. They are all naturally come from a watershed that cannot be altered by a human (unmanageable). Some combination of watershed physical factors and the manageable factors such as land use plan, slope, and slope length will give a specific watershed response to the rainfall. Eventually, this affects the large-small of river flows behavior. Baseflow river is an essential substance for the development of water resource management strategies at watershed scale. Therefore, this study aimed to estimate baseflow river recession at various geological formation. It also influences characteristics of baseflow recession in Wuryantorosub-watershed at Wonogiri district. Simultaneous Statistical Analysis (ANOVA) and partial (t-test) analysis show that there is a significant influence on the variation of land use in diverse geological formations toward the baseflow recession, with a determination coefficient value - Adjusted R-square is 58.1%.The simultaneous analysis describes a simultaneously effect of recession baseflow coefficient with value test of the test F table > F count at a level of confidence by 5%, and a partial analysis shows that all land use variations in three geological formations significantly influence baseflow recession. Recession model of these two relations is Y = 1.426 + 0,583X1 + 0,384X2 + 0,269X3. This condition indicates that baseflow recession is influenced by some basic by a number of entire environmental attributes. Thus, there will be a sustainable synergy of baseflow recession management that maintain river pattern by the surrounding inhabitant as an alternative water supply for local communities. Keywords: Baseflow, perennial river, variations in land use, geological formations

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