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    Wyświetlanie 1-13 z 13
    Tytuł:
    Density Effect of Mangrove Vegetation on Gastropods on Pandansari Mangrove Ecotourism Forest, Kaliwlingi Village, Brebes Central Java
    Autorzy:
    Nurfitriani, Siska
    Lili, Walim
    Hamdani, Herman
    Sahidin, Asep
    Powiązania:
    https://bibliotekanauki.pl/articles/1062746.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Brebes
    Clavatulidae
    Diversity Index
    Ellobiidae
    Gastropods
    Mangrove Density
    Mangroves
    Naticidae
    Nerithidae
    Potamididae
    Thiaridae
    Uniformity Index
    Opis:
    This research was conducted on November 2018 - January 2019. The method used was the survey method by making direct observations on the stations that have been determined. The results of the research include two types of mangroves found, they are Rhizophora stylosa and Aviciena marina. The highest mangrove density was found at station 1, as many as 2302 ind / ha which dominated by R. stylosa. Gastropods found were Casidulla aurisfelis, Cerithidea sp., C. cingulate, C. alata, C. obtusa, Polinices sp., Puperita sp., Tarebia sp., Telescopium telescopium, and Turricula flammea. The Diversity Index obtained is 0.998 - 2.547, indicating moderate diversity. The uniformity index obtained is 0.10 - 0.27, indicating that there was a dominant community. While the relation between mangrove vegetation density and gastropods was 0.95, this shows that there is a very strong relation between the density of mangroves and gastropods.
    Źródło:
    World Scientific News; 2019, 133; 98-120
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Utilization of activated carbon of various charcoal types as absorbent in green shellfish (Perna viridis, Linnaeus, 1758) contaminated by lead heavy metal
    Autorzy:
    Yustindriarini, Vidya
    Hasan, Zahidah
    Hamdani, Herman
    Sahidin, Asep
    Powiązania:
    https://bibliotekanauki.pl/articles/1076152.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Activated Carbon
    Green Shell
    Lead
    Perna viridis
    Skeletonema
    Opis:
    Aims of the research are to determine the type of activated carbon with high absorption rate in absorbing heavy metals of lead in green shells. This research used experimental method with complete randomized design then analyzed used analysis of variance and duncan test to see the decrease of lead in green shells by using different charcoal filters. The results showed that the highest decrease in green shell was by using coconut shell activated filter are 0,28 with a decrease percentage of 36,51%. The best lead decrease in water maintenance coconut shell activated filter treatment are 0,33 ppm. The coconut shell activated charcoal has a low ash content compared to other types and large pore charcoal size. Factors that supporting the metal absorption by charcoal include ash content on charcoal, charcoal pores, carbon concentration and pH concentration. Water quality measurements were measured in the morning and evening as supporting parameters in the study. Water quality measurements are in a range that can still be tolerated by green shells. Based on these results it can be concluded that the use of coconut shell activated charcoal is the best type of charcoal in lowering lead in green shells.
    Źródło:
    World Scientific News; 2019, 116; 157-168
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Difference Effect of Mouth Width Size and Operating Depth of Sodo (Push net) on the Catch of Rebon Shrimp (Acetes indicus H. Milne Edwards, 1830) in Tanah Kuning Waters, North Kalimantan, Indonesia
    Autorzy:
    Rahmayani, Rahmayani
    Hamdani, Herman
    Junianto, Junianto
    Izza, A. Mahdiana
    Powiązania:
    https://bibliotekanauki.pl/articles/1062751.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Acetes indicus
    Rebon shrimp
    Sodo mouth width size
    depth
    sodo
    Opis:
    Sodo (push net) is a fishing gear used to capture Rebon shrimp (Acetes indicus H. Milne-Edwards, 1830) by fishermen in Tanah Kuning water and it has a construction for varied operation depth. The purpose of this study was to determine the combination of the size of the mouth width and depth of operation of Sodo to get the most Rebon shrimp catch in the waters of Tanah Kuning. The study method used is experimental with Randomized Block Design (RBD). The first group is the size of the width used, equaling 4.8 m, 6 m, and 7.2 m, and depths of 0.5 to 3 m, and 4 to 6 m. The catch data was taken on January 15-22 2019. The results show that the A2B1 treatment, which is a combination of the size of the mouth width of 6 m and operated at a depth 0.5 – 3 m, was the best treatment, with the highest catch of mass 238 kg.
    Źródło:
    World Scientific News; 2019, 133; 121-131
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Catch of Skipjack Tuna (Euthynnus sp.) in National Fisheries Port Pengambengan, Bali, Indonesia
    Autorzy:
    Apriliani, Izza Mahdiana
    Rizal, Achmad
    Hamdani, Herman
    Denika, Ayang
    Powiązania:
    https://bibliotekanauki.pl/articles/1065114.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Bali strait
    Euthynnus
    Thunnus albacares
    Thunnus obesus
    bigeye tuna
    catch per unit effort
    monsoon
    tuna
    yellowfin tuna
    Opis:
    The Bali Strait has very high pelagic fish resources, ranging from small pelagic fish to large pelagics, one of which is a type of tuna. Skipjack tuna (Euthynnus sp.) is one of the dominant and high economic value fish resources. The composition of fish catch landed in National Fisheries Port (PPN) Pengambengan in 2014 is dominated by small pelagic fish. The composition of the largest fish catches consists of lemuru, skipjack, mackerel and scad. This study aims to look at the production of skipjack tuna and season distribution for 5 years. This information can be used as an effort to manage fisheries in PPN Pengambengan continuously. This research was carried out in the waters of the Bali Strait with fishing base PPN Pengambengan. The catch of skipjack tuna in Bali is fluctuated every month during 2013 until 2017. The average catch is high in 2014, and the lowest catch was in 2016. This was allegedly due to the catches of previous years namely in 2014 – 2015 skipjack tuna fish resources were overexploited. The catch of skipjack tuna based on the season has the highest value in September - November (transition II (intern-monsoon)) and the lowest is in December-February (northwest season).
    Źródło:
    World Scientific News; 2019, 120, 2; 144-153
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of Stingray Catches which Landed in Fish Landing Site of Labuan Bajo, West Manggarai Regency of East Nusa Tenggara
    Autorzy:
    Asut, Helena
    Hamdani, Herman
    Junianto, Junianto
    Dewanti, Lantun Paradhita
    Powiązania:
    https://bibliotekanauki.pl/articles/1076712.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Aetobatus narinari
    Dasyatis kuhlli
    Himantura granulata
    Himantura uarnak
    Pastinachus sephen
    Sex Ratio
    Stingray
    Stingray Size
    Stingray Type
    Taeniura lymma
    Opis:
    The purpose of the study was to determine the sustainability status of Stingray capture to determine the feasibility of catching Stingray in the waters of West Manggarai Regency. The research method used is the survey method, and this was conducted in July 2018 until mid-September 2018. The parameters studied included the type of Stingray, size and sex ratio. The results showed that the Stingray species found were A. narinari, D. kuhlii, H. granulata, H. uarnak, P. sephen, and T. lymma, with species diversity still stable (H' = 1,4). The average size of Stingray species caught makes it, however, not worth catching. Comparison of the Stingray sex ratio shows that T. lymma and H. granulata species were unbalanced, thus they should not be caught. D. kuhli and H. uarnak are still in balance so they can still be harvested. Based on conservation status in IUCN, the stingray that had the most severe threat status was H. granulata and H. uarnak, thus, these should not be harvested at all.
    Źródło:
    World News of Natural Sciences; 2019, 24; 89-99
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Eco Friendly Level of Mini Purse Seine Based on Catch Decapterus spp in Pekalongan Nusantara Fishing Port, Central Java, Indonesia
    Autorzy:
    Prasetyo, Adi
    Hamdani, Herman
    Astuty, Sri
    Dewanti, Lantun P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1109100.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Decapterus spp.
    Eco friendly
    Mini purse seine
    Opis:
    Excessive exploitation of fish resources with the use of fishing gear that is not selective and not eco-friendly will have an impact on the sustainability of capture fisheries, and cause damage to fish resources and marine ecosystems. The mini purse seine is a fishing gear that is most widely used by fishermen in the sea of the north coast of Java. Research was undertaken the Nusantara Fisheries Port (PPN), Pekalongan. The purpose of this research is to analyze the level of eco friendliness of mini purse seine fishing based on the main catch, which is (Decapterus spp.). The research method used a survey method at PPN Pekalongan and follows the operation of 3 units of mini purse seine working the fishing ground on the North Coast of Central Java, in January-February 2018. Data taken included total catches, catch composition, diversity index and the size of the fork length. Data analysis used the proportion of the main catch and by-catch, as well as the proportion of fish worth catching and not catching. The results showed that the mini purse seine fishing gear caught 6 species with a total catch of 35,633 with a weight of 4,600 kg. The main catch is 51%, compared to 49% by-catch. The length of the main catch fish worth catching is 46% of all fish measured. Diversity index value is 1.42 (high diversity), based on a research mini purse seine operated in the the Java Sea. The results of our work indicate that mini purse seine fishing is not eco friendly - as seen from the criteria of catch composition.
    Źródło:
    World News of Natural Sciences; 2018, 21; 42-52
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Capture process of mackerel (Scomberomorus commerson) on gillnet in Pangandaran water
    Autorzy:
    Oktavera, Caca
    Apriliani, Izza Mahdiana
    Hamdani, Herman
    Haetami, Kiki
    Powiązania:
    https://bibliotekanauki.pl/articles/1075657.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Scomberomorus commerson
    capture process
    gillnet
    mackerel
    proportion
    Opis:
    Gillnets are simple fishing gear that commonly used by fisherman in Pangandaran. This research aims to see the capture process of mackerel (Scomberomorus commerson) on gillnet in Pangandaran waters. This research was conducted in August 2018 and January 2019 in Pangandaran, West Java. This research using survey method. The data used in this research are primary data consisting of the proportion of catches and capture process, whereas secondary data obtained from Dinas Perikanan Pangandaran. The results of this research shows that the quantity and weight proportion of Bycatch > Maincatch and capture process of mackerel dominated by wedged by 79% and the lowest is snagged by 7%.
    Źródło:
    World Scientific News; 2019, 125; 252-259
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Relationship between Length and Mouth Opening of Skipjack Tuna (Katsuwonus pelamis) in the Waters of Palabuhanratu Sukabumi Regency
    Autorzy:
    Ridwan, Monika
    Khan, Alexander M. A.
    Zahidah, Zahidah
    Hamdani, Herman
    Powiązania:
    https://bibliotekanauki.pl/articles/1031887.pdf
    Data publikacji:
    2020
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Katsuwonus pelamis
    Palabuhanratu waters
    correlation value
    length-mouth opening relationship
    skipjack tuna
    Opis:
    Skipjack tuna (Katsuwonus pelamis (Linnaeus, 1758)) is one of the main commodities of Palabuhanratu capture fisheries with a percentage of 14% or 422.701 kg of total capture fisheries production in 2017. The purpose of this research is to analyze the correlation between length and mouth opening of skipjack tuna (Katsuwonus Pelamis) in the waters of Palabuhanratu Sukabumi Regency. The sample was collected in June until August 2019 at the Palabuhanratu Fishing Port, Sukabumi Regency. Skipjack tuna observed during the research had a total length range from 250 until 730 mm FL. The pattern of length and opening mouth relationships of skipjack tuna can be seen from the regression and correlation values. The results obtained were collected combined Y = 0.8064x - 0.2283 and R2 = 0.7786. Correlation value of the length and mouth opening relationship of skipjack tuna was 0.88. The level of length-mouth opening relationship of skipjack tuna is highly interrelated.
    Źródło:
    World News of Natural Sciences; 2020, 30, 2; 220-231
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Length Weight Relationship and Condition Factor of Indo-Pacific King Mackerel (Scomberomorus guttatus) in Pangandaran Water, West Java, Indonesia
    Autorzy:
    Tarigan, Amsal Loudikia
    Hamdani, Herman
    Yustiati, Ayi
    Dewanti, Lantun P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1076725.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Indo-Pacific
    Pangandaran water
    Scomberomorus guttatus
    condition factor
    length-weight relationship
    Opis:
    Scomberomorus guttatus is an economical valuable fish in Pangandaran, West Java, Indonesia. Indeed, the catch of large pelagic fish in Pangandaran water is dominated by Scomberomorus guttatus at around 42.30% of the total production of large pelagic fish in 2015-2017. The purpose of this research is to analyze length-weight relationship and condition factors of Scomberomorus guttatus. The samples were collected in August and September 2018 at Cikidang Fishing Port, Pangandaran Regency, West Java. The Scomberomorus guttatus observed during the research had total length ranging from 205 to 685 mmTL, and the length-weight relationship of Scomberomorus guttatus in Pangandaran water was indicated by the equation W=〖0,0000038L〗^3.0839. Furthermore, the growth pattern of Scomberomorus guttatus is positive allometric (b = 3.0839), meaning that weight growth is faster than length growth, while its condition factor range from 0.52 to 1.54 (average - 1.00 ±0.08).
    Źródło:
    World News of Natural Sciences; 2019, 24; 199-208
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diversity of Chlorophyta on Karapyak Beach, Pangandaran, West Java Province, Indonesia
    Autorzy:
    Hanifah, Syifa
    Sahidin, Asep
    Hamdani, Herman
    Yuliadi, Lintang Permata Sari
    Powiązania:
    https://bibliotekanauki.pl/articles/1076067.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Chlorophyta
    Diversity
    Karapyak Beach
    Macroalgae
    Opis:
    The purpose of this study is to determine and analyze the level of diversity of Chlorophyta on the intertidal area of Karapyak waters. The study was conducted from January to March 2018 at Karapyak beach, Pangandaran regency. Research parameters analyzed were species density, species frequency, species cover, Importance Value Index, Diversity and Uniformity of macroalgae. The measured environmental parameters are temperature, salinity, DO, pH, nitrate and phosphate. The results showed that there were 6 species macroalgae of the division Chlorophyta found on Karapyak Beach. The macroalgae (H) diversity index value is in the low category based on the index of the Shannon-Wienner. Meanwhile, the uniformity index value (E) is in the high category according to the Evennes index, which means that no species dominates the Karapyak waters.
    Źródło:
    World Scientific News; 2019, 117; 158-174
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Success Rate of Mangrove Planting based on Mangrove Morphology at Pramuka Island, Kepulauan Seribu National Park, Indonesia
    Autorzy:
    Palufi, Gita Endang
    Hamdani, Herman
    Pratama, Rusky Intan
    Sahidin, Asep
    Powiązania:
    https://bibliotekanauki.pl/articles/1076621.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Kepulauan Seribu National Park
    Pramuka Island
    Rhizophora stylosa
    growth
    mangrove
    success rate
    Opis:
    Planting mangroves on Pramuka Island is done in a monoculture way and usually fails. However, the planting managed by the Kepulauan Seribu National Park has become more successful. The specific objective of the research was to quantify the success rate of mangrove planting in Pramuka Island based on survival, growth and benthos levels in Pramuka Island mangroves. The mangrove planting area that was used as the research sample was an area wherein the planting are 14, 12 and 6 years old. The type of mangrove that planted is Rhizophora stylosa. The number of plots was determined based on the area. Data was collected in the form of primary data, namely, the number of living trees, tree heights, number of leaves and leaf dimensions. The success of mangrove planting reached 52%, 66.43% and 57.5% at stations 1, 2 and 3. The highest success rate was at station 2, while stations 1 and 3 are considered failures. This indicates that Pramuka Island has a low success rate of mangrove planting.
    Źródło:
    World News of Natural Sciences; 2019, 27; 73-84
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Adding Pumpkin Flour and Carrot Flour on Changes in Color Intensity of Goldfish (Carassius auratus L.) Strain Oranda
    Autorzy:
    Ahlam, Rian Nur
    Lili, Walim
    Hamdani, Herman
    Rosidah, Rosidah
    Bangkit, Ibnu
    Powiązania:
    https://bibliotekanauki.pl/articles/1076642.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Faculty of Fisheries and Marine Sciences
    Indonesia
    Padjadjaran University
    Sumedang
    West Java
    Opis:
    Goldfish is one of the most famous ornamental fish because of its body shape and color which was interesting to be maintained. The purpose of this research was to find the optimum dose of pumpkin and carrot flour combination on artificial feed to increase color brightness of goldfish. Complete Randomized Design with four treatments and four replications were used in the experiment. For the treatments, pumpkin flour 15%, pumpkin flour 7.5% with carrot flour 2.5% and carrot flour 5%, were studied. The parameters observed were color intensity, survival rate, and water quality. The results showed that supplementation of combination of pumpkin flour 7.5% with carrot flour 2.5% gave the highest color intensity of goldfish with TCF code 0815 and score 2.11 with 100% survival rate. Water qualities during the research were still in optimal condition.
    Źródło:
    World News of Natural Sciences; 2019, 26; 52-60
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Abundance and distribution of sea urchins (Echinoidea Leske, 1778) on coral reefs in the waters of Latondu Island, Taka Bonerate, South Sulawesi, Indonesia
    Autorzy:
    Malik, Prasetia Maulana
    Riyantini, Indah
    Yuliadi, Lintang Permata Sari
    Hamdani, Herman
    Powiązania:
    https://bibliotekanauki.pl/articles/1076619.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Diadema antillarum
    Diadema setosum
    Echinoidea
    Echinometra mathaei
    Echinotrix calamaris
    Echinotrix diadema
    Heterocentrotus mammillatus
    Latondu Island
    Mespillia globulus
    abundance
    coral reef
    distribution
    sea urchin
    Opis:
    Sea urchin is one of the key biota of coral reef stability. Research on the abundance and distribution of urchins was carried out from January-August 2019 and field data retrieval occurred in March 2019 on Latondu Island, Taka Bonerate. This study aims to determine the relationship between sea urchin abundance with coral reef conditions and sea urchin distribution patterns in the waters of Latondu Island, Taka Bonerate. Observation of coral reefs and sea urchins was carried out at 3 stations with different criteria of coral reef conditions. Retrieval of coral reef data was done using the Point Intercept Transect (PIT) method, while sea urchin observation came about via a transect belt method. The results showed that in the waters of the island of Latondu, there were 133 sea urchins from 7 species of the Echinoidea class, namely Diadema setosum, Diadema antillarum, Echinometra mathaei, Echinotrix calamaris, Mespillia globulus, Heterocentrotus mammillatus and Echinotrix diadema. The largest abundance of sea urchins was found in Station 3 on the southern part of Latondu Island with 12 ind / 50m2, while Station 1 in the northeast and Station 2 in the northwest part showed 5 ind / 50m2. Sea urchin distribution at Station 1 with a value of 0.79 was uniform, Station 2 with a value of 0.80 was also uniform and Station 3 with a value of 0.91 was uniform as well. The relationship between Sea urchin and coral reef was 0.56, which meant the relationship was moderate and directly proportional.
    Źródło:
    World News of Natural Sciences; 2019, 27; 59-72
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-13 z 13

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