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    Wyświetlanie 1-3 z 3
    Tytuł:
    Microplastics Ingestion by Fish in The Pangandaran Bay, Indonesia
    Autorzy:
    Ismail, Mochamad R.
    Lewaru, M. Wahyudin
    Prihadi, Donny J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1077271.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Commercial fish
    Ingestion
    Johnius
    Microplastics
    Pangandaran
    Trichiurus
    Opis:
    This study investigated the occurrence of microplastic particles in the digestive tracts of fishes from Pangandaran bay. The fish were collected by local fisherman. A total of 18 fish representing 2 species (Trichiurus sp. and Johnius sp.) were examined for microplastics. In total, 193 microplastic particles were found in the gastrointestinal tracts of all fishes. Microplastic particles were categorized as fragment (49.74%), fiber (22.8%) and film (27.46%), with size ranging from 0.12 to 5 mm. A statistically significant difference existed in the abundance of microplastic ingestion among the two species. The results of this study provide the first evidence of microplastic contamination in fish in Pangandaran bay.
    Źródło:
    World News of Natural Sciences; 2019, 23; 173-181
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    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:
    Microplastics Ingestion by Fish in the Biawak Island
    Autorzy:
    Ismail, Mochamad R.
    Lewaru, M. Wahyudin
    Prihadi, Donny J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1166319.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Biawak Island
    Fish
    Ingestion
    Microplastic
    Opis:
    Plastic pollution is a growing global concern. The Biawak Island is region conservation area in Indramayu, so not much human activity. But, marine debris in the Biawak Island is rife. In the present study, we investigated microplastic accumulation on Fish in the Biawak Island. This study fish is divided into 3 groups based on feeding habits, that is carnivore, herbivore and omnivore. We assessed the abundance of microplastic debris found in the gastrointestinal tract of fishes caught by local fishermen. Carnivore fish grup found 49-205 microplastic particle per-individual, herbivore fish grup found 60-316 microplastic particle per-individual, and omnivore grup found 83-106 microplastic particle per-individual. The ingestion of microplastics by fish was negatively correlated with the diversity of feeding habits. But accumulated of microplastic density in herbivore and carnivore is significantly different to omnivore.
    Źródło:
    World Scientific News; 2018, 106; 230-237
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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