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Wyświetlanie 1-3 z 3
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 Relationship between Benthic Macrofauna Community Structure and Density of Mangrove Vegetation in Mempawah Mangrove Park, West Kalimantan, Indonesia
Autorzy:
Noviatri, Syafira Eka
Zahidah, Zahidah
Herawati, Heti
Dewanti, Lantun Paradhita
Powiązania:
https://bibliotekanauki.pl/articles/1031497.pdf
Data publikacji:
2021
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Community Structure
Density
Macro-faunal benthic
Mangrove
Mempawah Mangrove Park
Opis:
This research was conducted in Mempawah Mangrove Park, West Kalimantan on July – August 2018. The research aims to map the benthic macrofauna community structure and its relationship with the structure of mangrove vegetation. The research method was a survey and use purposive sampling data method in observation stations based on different stages of mangrove vegetation. The observation stations consists of Avicennia marina and Rhizophora stylosa as the species of mangroves. Station 1 consists of mangroves in seedling size, station 2 consists of mangroves in pole size, and station 3 consists of mangrove trees. The benthic macrofauna consist of 8 species from 3 different classes, merostomata, malacostraca, and gastropods. The highest abundance value (155 ind/m2), diversity index (1,875) and similarity index (0,668) is in station 2. The relationship between benthic macrofauna abundance and mangrove density has -0,356 as the correlation coefficient which indicates that an increase of benthic macrofauna abundance is in line with the decrease of mangrove density. High density value in research shows that the mangrove is in seedling size, and vice versa a low density value indicates the mangrove trees. The coefficient of determination (0,1272) indicating that the abundance of benthic macrofauna is affected by the mangrove density as 12,72% and 87,28% affected by other factors.
Źródło:
World News of Natural Sciences; 2020, 33; 38-47
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Length-Weight Relationship and Catch Size of Bigeye Tuna (Thunnus obesus) Landed in Benoa, Bali, Indonesia
Autorzy:
Ahmad, Fadhilah
Dewanti, Lantun Paradhita
Arnenda, Gussasta Levi
Rizal, Achmad
Powiązania:
https://bibliotekanauki.pl/articles/1076794.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Benoa Fishing Port
Bigeye tuna
Thunnus obesus
catch size
isometric
length-weight
main catch
Opis:
The research was conducted at the Tuna Fisheries Research Station, Denpasar, Bali, in July 2018 (3 weeks duration). There were several types of high-value fish incorporated into this research: tuna, skipjack, shrimp, cob, mackerel, snapper, squid, reef fish (grouper, baronang, lobster / barong shrimp) and ornamental fish. Seaweed processing was also assessed. Benoa Fishing Port is one of the tuna landing base bases in Indonesia. It is the main port in Bali Province and ranks beside Muara Baru (Jakarta), Pelabuhan Ratu (West Java) and Cilacap (Central Java). This research aim to identified length-weight relationship, and proportion of proper catch size of bigeye tuna. Herein, bigeye tuna (Thunnus obesus) was identified visually and then assessed. The first identifier is the large size of the eye. The growth pattern of big eye tuna (Thunnus obesus) landed in Benoa Fishing Portis is isometric, where the length increase is equal to weight gain (isometric positive). The length distribution of big eye tuna was in range of 81-170 cm FL (334 fishes are obtained), and the distribution of weights varied in size from 11-95 kg, with the most common catch size being in the range of 16-20 kg (95 fishes). Of note, 60% of the fish had not reached the proper catch size.
Źródło:
World News of Natural Sciences; 2019, 23; 34-42
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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