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    Wyświetlanie 1-5 z 5
    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:
    Distribution of Macro Debris at Pangandaran Beach, Indonesia
    Autorzy:
    Purba, Noir P.
    Apriliani, Izza M.
    Dewanti, Lantun P.
    Herawati, Hetti
    Faizal, Ibnu
    Powiązania:
    https://bibliotekanauki.pl/articles/1177434.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Beach litter
    Citumang river
    Pangandaran beach
    fishing gear
    marine pollution
    ocean currents
    plastics packaging
    Opis:
    This research was to assest of marine debris in Pangandaran beach. Marine debris sampled from 2016 and 2017 around west Pangandaran using Ocean Conservancy (OC) form to find information about distribution, abundance, and types. The result is debris on the West coast of Pangandaran is originally comes from settlements, tourists, traders, and fishermen. The highest accumulation of marine debris happened in October with total weight 44.385 kilos, while the lowest accumulation happened in May with total weight 38 kilos. this is due to Citumang River had overflowed due to heavy rain and then was swept away along the coastline and piled up an area near the bay in October. In May and August the debris which most find is cigarette with the percentage 28% in May and 35% in August. While in October the debris which most find is a plastic bag with percentage 33%. From six types of debris, the dominant debris per types as follows: Most likely to find items is cigarette butts, Fishing gear is rope, Packaging material is other plastic/foam packaging, Personal hygiene is diapers, Other trash is cigarettes lighters, and Tiny trash less than 2.5 cm is foam pieces. The specific debris at Pangandaran beach is the fisheries tools like a rope and net, the rope embedded in the ground and make it hard to take out. One of the factor the large number of debris in Pangandaran is tourism activity and fisheries activity. In addition, the study indicates that there is a strong relationship between human activities and spreading of debris.
    Źródło:
    World Scientific News; 2018, 103; 144-156
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Selectivity of fishing gear for hairtail fish (Trichiurus lepturus Linnaeus, 1758) commodities in Pangandaran District, Indonesia
    Autorzy:
    Sienna, Yafi Ibnu
    Hasan, Zahidah
    Lili, Walim
    Dewanti, Lantun Paradhita
    Powiązania:
    https://bibliotekanauki.pl/articles/1075461.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Beach seines
    Gill nets
    Pangandaran
    Selectivity
    Trichiurus lepturus
    Opis:
    Hairtail fish (Trichiurus lepturus Linnaeus, 1758) are a major commodity of high economic value in Pangadaran. This study aims to determine the most selective fishing gear for hairtail fish commodities based on the frequency of hairtail fish length, the proportion of the main catch and by-catch in Pangandaran District. Data collected are primary and secondary data. Primary data consists of catch data and fish size length. The catch is obtained by collecting the results of landing fish with gill nets and beach seines. Fish size length data obtained through direct measurement when the fish is landed. Secondary data collected is data on capture fisheries production in Pangandaran District. Data analysis consisted of calculation of length size distribution and comparison of main and by-catches with fishing gears. The analysis was carried out with the help of Microsoft Excel software. The results of this study indicate that hairtail fish in Pangandaran District were captured using gill nets and beach seines. Based on the results of the research conducted on August 2018 until January 2019, it can be concluded that gill net fishing gears are more selective compared to beach seines based on several parameters observed, namely the length distribution and the proportion of main catch : by-catch. The results showed that the comparison of the length distribution of hairtail fish that was appropriately caught between gill nets and beach seines was 85.74% : 30,74%. Comparison of the proportion of main catch : by-catch between gill nets and beach seines was 52.38%: 23.57%.
    Źródło:
    World Scientific News; 2019, 126; 248-260
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spatial characteristics of the Hawksbill (Eretmochelys imbricate Linnaeus, 1766) nesting beach on Kepayang Island, Belitung - Indonesia
    Autorzy:
    Harahap, Syawaludin A.
    Prihadi, Donny J.
    Virando, Gravito E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031644.pdf
    Data publikacji:
    2020
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Eretmochelys imbricate
    Kepayang Island
    habitat characteristics
    hawksbill
    nesting beach
    Opis:
    Hawksbill sea turtles are scattered in Indonesia, especially on small uninhabited islands and are the only species of turtle most bound to tropical waters. The hawksbill has experienced a drastic decline in population mainly due to bycatch in fishing activities and disturbance of the nesting habitats due to anthropogenic presence. Kepayang Island in Belitung is one of the areas used as hawksbill as a habitat for nesting to laying eggs. To get information about hawksbill on this island, a study was conducted to find out the characteristics of hawksbill nesting beaches on Kepayang Island, Belitung. The survey was carried out in July 2014 and successfully identified 12 nests as an observation sample. Observations show that the coast of Kepayang Island where nesting turtles have a narrow beach width of less than 20 m with a slope of between 10° to 16° and an average intertidal area as wide as 11.5 meters. The texture of sand in the nest is coarse to fine sand which is dominated by fine and medium sand and has a temperature of around 27.7 °C to 30.2 °C measured at the bottom of the nest. The range of sand pH distribution on Kepayang Island is between 6 to 8 with a moisture content of 3.1 to 6.6%. The coastal vegetation formation in Kepayang Island is dominated by Barringtonia and Pescaprae with vegetation in the form of screwpine (Pandanus tectorius), railroad vine (Ipomoea pescaprae) and Barringtonia (Barringtonia asiatica). However, there are predators of turtle eggs and hatchlings, especially water monitor lizards (Varanus salvator), sea birds e.g. brahminy kite (Haliastur indus) and gulls (Chlidonias leucopterus). In general, Kepayang Island has characteristics suitable for hawksbill nesting sites.
    Źródło:
    World Scientific News; 2020, 146; 152-169
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Surficial Sedimentary at the Bottom in Waters Surrounding the Arisen Land of Putri Island, Karawang - Indonesia
    Autorzy:
    Harahap, Syawaludin A.
    Yuliadi, Lintang P. S.
    Sinulingga, John N.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031415.pdf
    Data publikacji:
    2021
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Arisen land
    Cikiong Beach
    Putri Island
    deltaber
    grain size
    kummod-sel
    phi (φ) scale
    sedimentation
    surficial sedimentary
    Opis:
    This study was conducted in July 2016 around Putri Island and Cikiong Beach, Batujaya District, Karawang Regency, West Java - Indonesia to know the types of surficial sedimentary that makeup Putri Island. Field survey activities were carried out to collect sediment samples using a 1-meter long piston core. The sampling locations were carried out at five stations by considering representativeness and ease of accessibility. Sediment analysis using the sieve or granulometric method to produce grain size information on the phi (φ) scale. Sediment types were classified based on grain size using the Wentworth scale and followed by the Folk’s ternary diagram. The study results show that the sediment covering the bottom of the waters around Putri Island is composed of seven types of sediment, namely gravel, very coarse sand, coarse sand, medium sand, fine sand, very fine sand, and silt. It can be seen that sand dominates the sediment fraction which reaches 94% followed by 4% mud and 2% gravel. If classified based on the main component of the Folk’s ternary diagram, the seabed of this area has three types of sediment textures, namely slightly gravelly sand [(g) S], Sand [S], and gravelly sand [gS]. Judging from the constituent elements of the sediment, it can be said that the sedimentation that occurs in the study location is composed of alluvial deposits. The formation of this sediment is dominated by material carried by the river flow through fluvial and tidal processes.
    Źródło:
    World Scientific News; 2021, 151; 95-109
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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