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    Wyświetlanie 1-9 z 9
    Tytuł:
    Diversity of Sea Cucumber Based on the Characteristics of Habitat Sikakap Strait Water Area, Mentawai Island District, Indonesia
    Autorzy:
    Rizal, Achmad
    Nurruhwati, Isni
    Powiązania:
    https://bibliotekanauki.pl/articles/1030993.pdf
    Data publikacji:
    2020
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Actinopyga miliaris
    Bohadschia argus
    Genus Diversity
    Holothuria atra
    Holothuria leucospilota
    Sea Cucumber
    Sikakap Strait
    Stichopus variegatus
    Opis:
    This research was conducted to determine the species of sea cucumber and some aspects of ecology and water quality of the substrate, total organic matter, and habitat distribution patterns of sea cucumber in Sikakap strait waters. The method used in this research was survey method, by spreading the transect out as long as 50 meters with a width of 20 meters parallel shoreline. The result was obtained 4 genera which are included in one family. The highest Diversity of Index Value (H’) was found at Station 2 about 1.012, Station 3 about 0,004 and the lowest is found at Station 1 about 0. The highest Equitability of Index Value (E) was found at Station 2 about 0.271, Station 3 about 0.063 and the lowest was found at Station 1 about 0. The pattern of spread of species at Station 1 was included in the pattern of spread of the group about 1.037, Station 3 and 2 were included in the distribution pattern of uniform. Habitats of sea cucumbers in the waters of Sikakap Strait was included in the category of sand (Station 1), rocky sand (Station 2), and muddy sand (Station 3) the total organic matter (TOM) each station about 16.10 %, 14.71%, and 20,48%. The differences in each Station are caused by the differences in habitat and food sources in the waters. Parameter as temperature, salinity, pH and Dissolved Oksigen at Sikakap Strait waters linked to the quality standard of Ministry of Environment Decree No.51/2004 for marine water quality was still quite good for the existence of sea cucumbers.
    Źródło:
    World Scientific News; 2020, 145; 379-396
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of the effect of city growth on the development of hinterland region in Cianjur Regency
    Autorzy:
    Rizal, Achmad
    Nurruhwati, Isni
    Powiązania:
    https://bibliotekanauki.pl/articles/1076570.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Cianjur Regency
    disparity
    growth center area
    hinterland region
    Opis:
    This study aims to determine the effect of the growth center through the magnitude of economic growth in the growth center region and its influence on the economic growth of the hinterland region in 2013 to 2017 by using correlation analysis and to find out the income gaps that occur in the growth center and the hinterland region in 2013 until with 2017 using Williamson's index analysis. This study uses an explanatory method with secondary data cited from the Office of the Central Statistics Agency of Cianjur District and literature studies. Correlation results show that the center of the development sub-region is able to influence the development and growth of the back area (hinterland) and vice versa. Williamson index analysis results show that the city area of Cianjur Regency as a center of growth has a role in the development of the region in Sub-district of Cianjur Regency, this is indicated by the low value of the Williamson index that occurs as a whole between the growth center and the hinterland area of 0.54958 with the lowest average value 0.42988 and the highest average value of 0.74544.
    Źródło:
    World Scientific News; 2019, 115; 260-268
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New Methodological Approaches for Change in Traditional Sectors: The Case of the West Java Fisheries Socio Economic System
    Autorzy:
    Rizal, Achmad
    Nurruhwati, Isni
    Powiązania:
    https://bibliotekanauki.pl/articles/1077819.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Fisheries
    West Java
    human resources
    labour market
    scenarios
    Opis:
    This paper summarises the methodological approach and main results of the Coastal project (Employment and Human Resources in the Fisheries Socio-Economic System). This project had as its main aim the search for alternative futures for the fisheries sector in West Java, with particular attention being paid to the human resources situation and the working and living conditions of the fisheries-dependent populations in the coastal areas. This is a particularly interesting case, since fisheries were once an important activity and they are now in deep recession, even though it is generally recognised that the future utilisation of maritime resources offer an immense potential. As part of the research, a Delphi exercise was implemented involving in two successive stages some of the leading actors and experts dealing with the sector in West Java. Other initiatives were held in the context of the Coastal project providing direct and indirect inputs to the scenarios and recommendations that were put forward in the sequence of the Delphi exercise. Overall, the activities described in the paper contribute to the mobilisation of major actors and to discussions that may have practical implication for the future of the sector - if certain conditions are now met in the follow up to the project.
    Źródło:
    World News of Natural Sciences; 2019, 22; 41-51
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structure of Plankton Communities in Cijulang River Pangandaran District, West Java Province, Indonesia
    Autorzy:
    Sahidin, Asep
    Nurruhwati, Isni
    Riyantini, Indah
    Triandi, Muhamad
    Powiązania:
    https://bibliotekanauki.pl/articles/1077072.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Cijulang River
    cijulang
    community structure
    plankton
    Opis:
    A river is a water ecosystem that plays an important role in the hydrological cycle and functions as a catchment area for the surrounding area. One of the organisms inhabiting river waters is plankton. The purpose of this study was to determine and analyze the structure of the plankton community in the waters of the Cijulang River and to study the relationship between plankton abundance, as well as some physical-chemical parameters of the water. The study was conducted in January, February, and March 2018 on the Cijulang River, at 5 (five) stations with a purposive sampling method. Accordingly, 17 genera were found, from 7 phytoplankton classes consisting of 6 Bacillariophyceae genera, 1 Clorophyceae genera, 2 Cyanophyceae genera, 3 Zygnematophyceae genera, 2 Desmidiaceae genera, 1 Synurophyceae genera, and 2 Fragillariophyceae genera. Also found were 10 genera from 5 classes of zooplankton consisting of 4 genera Maxillopoda, 2 genera Branchiopoda, 1 genera Gastropoda on veliger fase, 1 genera Ostracoda, and 2 genera Copepoda. The abundance of phytoplankton obtained ranges from 11-57 cells / L, while the zooplankton ranges from 8 – 40 ind/L. The diversity index (H ') = 1.397 - 2.275 and dominance index (D) = 0.022 - 0.294. Physical-chemical parameters of the waters, respectively, were 22 °C - 31 °C, light intensity 47.5 cm - 254 cm, salinity 0 ppt - 20 ppt, and dissolved oxygen 6.2 mg / L - 13.4 mg / L. Ammonia concentration 0.03 - 0.08 mg / L. All stations had a phosphate value of less than 0.16 mg / L and a silicate concentration of 0.01 - 0.0581 mg / L.
    Źródło:
    World News of Natural Sciences; 2019, 23; 128-141
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study Social Economy Green Tree Conservation Area (Chelonia mydas) as a Daily Ecowism in Pangumbahan, Sukabumi District, Indonesia. Case Study of Green Turtle Conservation Areas for Local Communities
    Autorzy:
    Fatimah, Vetthy
    Nurhayati, Atikah
    Nurruhwati, Isni
    Riyantini, Indah
    Powiązania:
    https://bibliotekanauki.pl/articles/1066267.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Chelonia mydas
    Ecotourism
    Local Communities
    Socio-Economy
    Turtle Conservation
    Opis:
    This research was conducted in Pangumbahan Village, Ciracap District, Sukabumi Regency, West Java Province. The implementation starts from August 2018 until March 2019. The socio-economic study of the green turtle conservation area (Chelonia mydas (Linnaeus, 1758)) as a marine ecotourism for local communities is carried out to know the potential of conservation areas in terms of the social and economic aspects that are generated in local communities. The method used in this research is the case study method in Pangumbahan Village by collecting primary data and secondary data. The sampling method used was purposive sampling and data processing using Ms. Excel. Based on the research that has been done, it is known that even though the impact has not been felt by the whole community, the Pangumbahan Village community hopes that Pangumbahan Beach Turtle Beach Park area can be developed because it has the potential to provide more benefits to them.
    Źródło:
    World Scientific News; 2019, 130; 82-98
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Elasticity of Demand for Catfish Products (Clarias sp.) in Bandung City of Indonesia
    Autorzy:
    Rizal, Achmad
    Aprilia, Lina
    Nurruhwati, Isni
    Nurhayati, Atikah
    Powiązania:
    https://bibliotekanauki.pl/articles/1177470.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Bandung City
    Catfish
    Clarias sp
    Demand elasticity
    percapita income
    price
    Opis:
    This research aims to analyze the demand elasticity of catfish (Clarias sp.) on Bandung City and to analyze the factors (the price of catfish, the price of tilapia fish, the price of broiler chicken meat, the price of rice and percapita income) that are affect the demand for catfish (Clarias sp.) on Bandung City. This research was conducted on January 22th until February 16th at Bandung City. The method used is descriptive analytical method by using periodical data (time series). This data retrieval technique by using purposive sampling where a researcher must really know that the respondents who choose can provide the desired information in accordance with research problems. The results showed that the demand for catfish (Clarias sp.) on Bandung City is elastic, and the factors that affect the demand for catfish (Clarias sp.) on Bandung City are the price of catfish, the price of red tilapia fish, the price of broiler chicken meat, the price of rice and percapita income.
    Źródło:
    World Scientific News; 2018, 102; 76-89
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Economic Contribution of Southern West Java Province Marine Fisheries
    Autorzy:
    Rizal, Achmad
    Nurruhwati, Isni
    Khan, Alexander M. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1075704.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Economic
    Fisheries
    Input-Output
    Marine
    Southern West Java Province
    Opis:
    Economic development has negative impacts on the environment and spurs an upward trend of environmental degradation and resource depletion. However, as incomes increase, the structure of the economy may change, shifting from a resource-intensive economy to a serviceand knowledge-based technology-intensive economy. Marine Fisheries development is one of the economic’s sector that contribute on regional economic growth in west java province. This paper present the Input Output Analysis to show economic contribution of Marine fisheries of southern west java province. Total contribution (direct and indirect effect) of marine fisheries in the Southern West Java economy range from 12.7%, 13.1% to 14.6% in terms of value added, employment and production value. The direct economic contribution in 2017 for the first two measures is 5.5% and 7.3%. Recommendation as consequences of this finding are investment should be alocated to fish culture on high value fish species. Concerning investment on marine fisheries resources, it needs increasing financial institution supporting.
    Źródło:
    World Scientific News; 2019, 119; 204-217
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Histopathological changes in gold fish (Carassius auratus (Linnaeus, 1758)) infected by Aeromonas hydrophila bacteria with various densities
    Autorzy:
    Rosidah, Rosidah
    Yunita, Maria Dewi
    Nurruhwati, Isni
    Rizal, Achmad
    Powiązania:
    https://bibliotekanauki.pl/articles/1031492.pdf
    Data publikacji:
    2020
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Aeromonas hydrophila
    Carassius auratus
    clinical symptoms
    histopathology
    Opis:
    The purpose of this study was to distinguish histopathological changes in carp fish (Carassius auratus) infected by Aeromonas hydrophila with different densities. Five treatments were used in the survey for this research method. The treatments used were bacterial infusion of A. hydrophila in the test fish through intramuscular injection with various densities, namely: A. without infection, B: 105 CFU/mL, C: 106 CFU/mL, D: 107 CFU/mL, and E: 108 CFU/mL. The parameters observed were histopathological changes in gill organs, kidneys and hearts of carp fish (gold fish). Data from histopathological observations were analyzed descriptively. The results present gill organs, liver and kidneys of carp fish infected with the bacteria A. hydrophila at various densities experiencing histopathological changes in the form of hemorrhages, necrosis and congestion and hyperplasia of the renal tubules. Other changes that occur were in the kidney organ experiencing a melanomacrophage center (MC). Tubules were coated with connective tissue and lymphocyte infiltration. The most severe organ damage that occurs in carp fish infected with the bacteria A. hydrophila at a density of 108 CFU/mL (treatment E) is shown by a low survival of 5%.
    Źródło:
    World Scientific News; 2020, 142; 150-168
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diversity and the abundance of the insect of Coleoptera orders at Mamberamo river bank of Papua Province, Indonesia
    Autorzy:
    Rizal, Achmad
    Suryana, Asep Agus Handaka
    Rosidah, Rosidah
    Nurruhwati, Isni
    Powiązania:
    https://bibliotekanauki.pl/articles/1062754.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Biodiversity
    Coleoptera
    Mamberamo River
    Papua Province
    Opis:
    This study aims to determine the diversity and abundance of the order Coleoptera on the riparian of the Mamberamo river in Papua Province. The method used is a survey method. Determining the location and station of research was conducted by purposive sampling method. Sampling the species of the order Coeloptera was done by direct sampling, insect nets and traps insects. Samples were analyzed using species diversity index, relative abundance index, dominance index and evenness index. The results found were 437 individuals, 29 species and 12 families of the order Coleoptera. Family of the order Coleoptera cover, namely Carambycidae, Carabidae, Chrysomilidae, Ciidae, Coccinellidae, Curculionidae, Dystiscidae, Melandryidae, Phalacridae, Scarabidae, Staphylinidae, and Tenebrionidae. The family of Coccinellidae and Chrysomilidae have the highest number of species, namely 8 species. The highest number of individuals was found in the family Chrysomilidae of survey sites Station I, which is a species Lema diversa (114 individuals). Based on the survey area, the highest individual number of the order Coleoptera was found in the Station I (451 individuals). The species diversity of Coleoptera covers the riparian of the Mamberamo river in Papua different. Diversity index of insect order Coleoptera in four locations in Papua Mamberamo river riparian has been classified as moderate or not so diverse. Evenness index of the order Coleoptera in four survey sites of Papua Mamberamo river riparian lower appears quite evenly. Dominance index species of the order Coleoptera on the riparian of Mamberamo River in Papua showed the value <0.50, meaning do not happen dominance of certain species. The information of this research results is expected to be the initial information diversity and abundance of the order Coleoptera on the riparian of the Mamberamo river, Papua Province.
    Źródło:
    World Scientific News; 2019, 133; 132-144
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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