scholarly journals The relationship between mangrove ecosystem and fish diversity in Pabean Ilir and Pagirikan, Indramayu District, West Java

2016 ◽  
Vol 6 (1) ◽  
pp. 43-58 ◽  
Author(s):  
RANA DESCASARI ◽  
ISDRADJAD SETYOBUDIANDI ◽  
RIDWAN AFFANDI
Keyword(s):  
Fish Species ◽  
Avicennia Marina ◽  
Mangrove Ecosystem ◽  
Fish Diversity ◽  
Importance Value Index ◽  
Importance Value ◽  
West Java ◽  
High Productivity ◽  
Fish Catch ◽  
The Relationship

Descasari R, Setyobudiandi I, Affandi R. 2016. The relationship between mangrove ecosystem and fish diversity in Pabean Ilir and Pagirikan, Indramayu District, West Java. Bonorowo Wetlands 6: 43-58. Mangrove ecosystem has high productivity because it has the ability to a nutrient trap, which supports aquatic biota, especially fish. The purpose of this study was to determine the relationship between mangrove densities with total fish catch, number of fish species, and fish diversity. The data collections were mangrove condition, fish, physical, and chemical parameters. The results showed that mangrove density in Pabean Ilir Village higher than Pagirikan village. The highest importance value index of mangrove was Rhizophora mucronata and Avicennia marina. Total number of fish caught in two locations were 1093 individuals, consisting of 80 species belonging to 38 families. The dominant fish species were Ambassis nalua, Johnius belangerii, Leiognathus equulus, and Platycephalus indicus. There was positive relationship between the mangrove density with the total number of fish catch, number of fish species, and fish diversity in Pabean Ilir Village and Pagirikan Village, Pasekan Subdistrict, Indramayu District, West Java.

scholarly journals Reproduction and community structure of fish from winter catch sites from industrial shrimp bycatch from the northeast and southeast Mexican Pacific

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e4460
Author(s):  
Jorge de Jesus Tirado-Ibarra ◽  
Mariany Loya-Rodriguez ◽  
Jose Carlos Morales-Arevalo ◽  
Isabel Rosario Muñoz-Garcia ◽  
Francisco Martinez-Perez ◽  
...  
Keyword(s):  
Community Structure ◽  
Fish Species ◽  
Fish Diversity ◽  
Target Species ◽  
Importance Value Index ◽  
Importance Value ◽  
Mexican Pacific ◽  
Shrimp Fishery ◽  
Average Size ◽  
First Maturity

The shrimp fishery is one of the most important fisheries in the world, although the low selectivity from trawling nets has led to the capture of a large number of non-target species. Shrimp-bycatch species include a large number of fish and invertebrate species, of which fish species are the most abundant. The present study aims to determine the community structure as well as the average sizes at first maturity of the fish species from shrimp-bycatch caught from industrial fisheries in the Mexican Pacific from Sinaloa to Guerrero, from January to March 2015. The shrimp-bycatch fish diversity value was found to be 2.22. A total of 37 species of finfish were found, of which five were considered rare. The fish species with the highest Importance Value Index (IVI) levels were Pseudupeneus grandisquamis, Paralichthys woolmani, Lutjanus peru and Diapterus peruvianus. The average size at first maturity was calculated for all species. Of the analysed organisms, 90% were in the juvenile stage, including species with riverine and artisanal fisheries. The present study demonstrates the risk within marine populations to different non-target species due to the poor selectivity of shrimp trawls.

scholarly journals Struktur Komunitas Mangrove di Kelurahan Setapuk Besar Kota Singkawang

2021 ◽  
Vol 3 (1) ◽  
pp. 9-16
Author(s):  
Mega Sri Astuti ◽  
Warsidah Warsidah ◽  
Ikha Safitri
Keyword(s):  
Sampling Method ◽  
High Salinity ◽  
Avicennia Marina ◽  
Mangrove Ecosystem ◽  
Marine Organisms ◽  
Tree Level ◽  
Forest Types ◽  
Importance Value Index ◽  
Importance Value ◽  
Salinity Levels

Mangrove are plants that can survive in extreme areas with high salinity levels and have an important role for marine organisms. Mangrove are also a parameters that can absorb carbon much higher than other forest types. The purpose of this research was to observe mangrove community structures. This research was conducted from February to March 2020 in the mangrove ecosystem of Setapuk Besar Village. This research was conducted using purposive sampling method which is based on different environmental hues. The results showed that there were 4 types, namely Avicennia marina, Avicennia lanata, Rhizopora stylosa and Rhizopora mucronata. Species of A. marina at tree level have a density value of 66.55 Ind / ha and an Importance Value Index of 300%. Type A. marina at seedling level has a density value of 6266.66 Ind / Ha and an Importance Value Index of 200%. Seedling rate: The highest Importance Value Index for R. stylosa was 127.53%

scholarly journals KEANEKARAGAMAN JENIS VEGETASI MANGROVE DI DESA DUSUN BESAR KECAMATAN PULAU MAYA KABUPATEN KAYONG UTARA

2020 ◽  
Vol 8 (2) ◽  
Author(s):  
Cici Khairunnisa ◽  
Eddy Thamrin ◽  
Hari Prayogo
Keyword(s):  
Species Diversity ◽  
Mangrove Forest ◽  
Avicennia Marina ◽  
Forest Vegetation ◽  
Forest Area ◽  
Tree Level ◽  
Importance Value Index ◽  
Importance Value ◽  
Mangrove Vegetation ◽  
Vegetation Species

The diversity of mangrove vegetation is a community that has different characteristics from other communities. Diversity is an important component in mangrove management, but so far the availability of data related to mangroves is still very minimal, including those related to the species diversity of mangrove forest vegetation in the region. This study aims to obtain data on species diversity of vegetation found in the mangrove forest area of Dusun Besar Village, Pulau Maya District, Kayong Utara Regency. Method used was a combination of path and plot method, and the determination of the location and research path location were carried out using purposive sampling. The results of observation and data analysis showed that the dominant vegetation species with the highest importance value index (INP) for seedlings, saplings and trees was the Avicennia marina, namely the INP value of seedlings 37.04%, the INP values of sapling 65.24%, and the value of INP a tree rate of 65. Based on the results of the most dominant analysis found the species of  Avicennia marina with a value of C = 0.03430 for seedling, C = 0.04729 for sapling, and C = 0.04736 for tree level. The diversity of mangrove forest vegetation species in Dusun Besar Village for seedlings, saplings and trees is low because it has an H 'value <1, and the abundance of mangrove vegetation species was not evenly distributed in each forest area because it only has an e value <1.Keywords: Dusun Besar Village, Mangrove Forest, Species Diversity

scholarly journals Studies on fish diversity concerning Hydro-ecology of Kangsabasti river in Purulia district, West Bengal, India

2020 ◽  
Vol 26 (2) ◽  
Author(s):  
Manab Kumar Saha
Keyword(s):  
Fish Species ◽  
Physicochemical Parameters ◽  
West Bengal ◽  
Monsoon Season ◽  
Fish Diversity ◽  
Riverine Ecosystem ◽  
Post Monsoon ◽  
Fish Catch ◽  
Purulia District

Fish diversity depends both on various physicochemical parameters and the biological components of the riverine ecosystem. During the study period from January 2017 to December 2019 the highest fish diversity and density were observed in post-monsoon and lowest in pre-monsoon season in the Kangsabati River, Purulia District of West Bengal. Twenty five fish species, associated with 19 genera, 10 families and 5 orders have been identified. It was recorded that the Cyprinidae was the predominant family, which represented 56% of the entire fish catch.

scholarly journals FISH DIVERSITY OF GHODAGHODI LAKE IN KAILALI, FAR-WEST NEPAL

2017 ◽  
Vol 22 (1) ◽  
pp. 120-126
Author(s):  
Dipendra Joshi ◽  
Bijaya K. C.
Keyword(s):  
Species Richness ◽  
Community Structure ◽  
Fish Species ◽  
Diversity Index ◽  
Fish Diversity ◽  
Channa Striatus ◽  
Illegal Fishing ◽  
Dominant Fish ◽  
Fish Catch ◽  
Excessive Proliferation

Ghodaghodi Lake is an ox-bow perennial lake of Ghodaghodi Lake Complex, situated in Kailali district. The present study was conducted to understand the fish diversity, community structure and distribution pattern in Ghodaghodi Lake. A total of 13 fish species were recorded from the different section of Ghodaghodi Lake, belonging to five order, eight family and eleven genera. According to fish catch the dominant order and family of Ghodaghodi Lake were found to be Cypriniformes (40%) and Cyprinidae (40%) respectively. The dominant fish species of Ghodaghodi Lake was Labeo gonius followed by Mystus tengara, Nandus nandus and Channa striatus. The highest diversity index (2.46), species richness (6.14) and evenness (0.96) of fish were recorded from station III during the month of January. Lowest diversity index (1.75) and evenness (0.90) was found in station II and during the month of October (2.25 and 0.88). Similarly, lowest species richness was found in station I (3.91) and during the month of July (5.82). Fish diversity and number in Ghodaghodi Lake were found to have decreased. This could be due to pollution, illegal fishing and excessive proliferation of aquatic weeds.Journal of Institute of Science and TechnologyVolume 22, Issue 1, July 2017, page: 120-126

scholarly journals Mangrove Diversity along the Coast of Ratnagiri, Maharashtra

2017 ◽  
Vol 8 ◽  
Author(s):  
Tarnnum Mubarak Mulla ◽  
Niranjana Suneel Chavan
Keyword(s):  
Anthropogenic Activities ◽  
Avicennia Marina ◽  
Maximum Height ◽  
Ecological Indices ◽  
Importance Value Index ◽  
Importance Value ◽  
Margalef Index ◽  
Sonneratia Alba ◽  
Micro Level ◽  
Ceriops Tagal

<p>The present paper deals with the study of mangrove diversity along different sites of Ratnagiri coast of Maharashtra, India. Height of the plants, Importance Value Index and various indices viz. Simpson’s index, Shannon-weaver index and Margalef index were determined. Maximum height was recorded from Chinchkhari site (8.76 meters). It was observed that the <em>Sonneratia alba, Avicennia marina</em> and <em>Ceriops tagal</em> species showed the highest Importance Value Index from respective sites. Based on ecological indices, Narayanmali site was found to be rich in diversity while other sites are encroached and destructed mostly by anthropogenic activities. The piece of work is significant in comparing the diversity at micro level by monitoring periodically for future programs. </p>

Deep learning-based prediction of fish catch for the offshore waters in south korea

2020 ◽  
Author(s):  
You jeong yoon ◽  
Yang won lee
Keyword(s):  
Deep Learning ◽  
Fish Species ◽  
Satellite Images ◽  
Research Area ◽  
Biological Factors ◽  
Factors Affecting ◽  
Fish Catch ◽  
Intelligence Modeling ◽  
The Relationship ◽  
Fishing Area

&lt;p&gt;Recently in Korea, the fish catch of offshore waters recorded less than 1 million tons in 44 years due to climate change and drastic changes in the fishing environment. Therefore, it is essential to produce and provide accurate fishing forecast information, such as the location of fishing fields and the amount of fish production, that varies in time and space according to fishing conditions to enhance the competitiveness of the fishing industry. Since the factors affecting the fish catch have various and nonlinear relationships, so this study predicted the catch based on deep learning. The study was selected as the three major fish species of the Korean coast -- anchovy, mackerel and squid. The research area was selected as four fishing area. (One fishing area is 14 km * 14 km). In order to produce accurate forecasted fishing information, it is necessary to identify major marine weather and biological factors affecting the fish catch by fish species and artificial intelligence modeling using marine and weather satellite images. The satellite data used in the study are from the Korea Meteorological Administration (KMA). So far, research on the relationship between two or more factors and fish catches has been insufficient in the previous research, so this study may contribute to the prediction of fishing trends.&lt;/p&gt;

scholarly journals POTENSI FAUNA AKUATIK EKOSISTEM HUTAN MANGROVE DI KAWASAN TELUK PANGPANG KABUPATEN BANYUWANGI

2015 ◽  
Vol 9 (2) ◽  
pp. 28 ◽  
Author(s):  
Yanuar Rustrianto Buwono ◽  
I.P.G Ardhana ◽  
Made Sudarma
Keyword(s):  
River Flow ◽  
Fish Fauna ◽  
Mangrove Ecosystem ◽  
Demersal Fish ◽  
Importance Value Index ◽  
Importance Value ◽  
Dispersal Patterns ◽  
Aquatic Fauna ◽  
Biodiversity Index ◽  
Index Value

Mangrove ecosystem located between terrestrial and marine coastal areas are changing constantly due to human activities that affect the aquatic fauna several species of fish and non-fish. The aim of research to determine the level of importance and biodiversity index value of mangrove, analyze abundance, biomass, diversity and equity, as well as the spread of aquatic fauna mangrove forest ecosystem. Results of the study showed an index of biodiversity of mangrove flora in the medium category with a relative importance value index Rhizophoraceae and Sonneratiaceae dominate in all phases. Economically valuable aquatic fauna found amounted to 21 species of 15 families. Groups of fish fauna found bedul fish (A. caninus) have abundance and biomass as much as 975 ind at 18,299.56 gr, meanwhile the non fish fauna found werus shrimp (Metapenaeus sp.) has an abundance of as much as 1,936 ind and biomass crabs (P. pelagicus) have amounted to 13,609.38 gr associated in mangrove areas Pangpang Bay. Fauna biodiversity index included in the medium category, meanwhile the index of evenness fauna belonging in the high category. Dispersal patterns at the mouth of the bay with the mouth of the river flow Wagut fauna found in the form of pelagic and demersal fish such as family Mugilidae, Clupediae, Leiognatidae, Psettodidae. At the center of the edge of the bay in the form of aquaculture ponds found that pelagic fish group Centropomidae, Polynemidae, Sillagidae family. Meanwhile, at the end of the bay with the river flow Setail found the group that demersal fish Platycephalidae and Gobidae family.

scholarly journals Percentage of Mangrove Canopy Cover and Mollusks Abundance in Benoa Bay Mangrove Ecosystem

2021 ◽  
Vol 5 (3) ◽  
pp. 105
Author(s):  
Shintani Asri Tinambunan ◽  
Nyoman Dati Pertami ◽  
Ni Made Ernawati
Keyword(s):  
Canopy Cover ◽  
Avicennia Marina ◽  
Mangrove Ecosystem ◽  
Line Transect ◽  
Hemispherical Photography ◽  
Bruguiera Gymnorrhiza ◽  
Mangrove Species ◽  
Rhizophora Stylosa ◽  
Rhizophora Apiculata ◽  
The Relationship

This research was conducted to determine the condition of the mangrove ecosystem based on its canopy cover and to determine the types of mollusks (Bivalves and Gastropods) associated with the Benoa Bay mangrove ecosystem. Hemispherical photography is a method for observing mangrove canopy cover and line transect method for mollusks. The composition of mangrove species found in the research location were five species, namely Rhizophora stylosa, Rhizophora mucronata, Rhizophora apiculata, Bruguiera gymnorrhiza, and Avicennia marina. The percentage of mangrove canopy cover in the Benoa Bay mangrove ecosystem is in a good category (average = 76.59%). There are eight types of mollusks found in the research location. There are two types of bivalves (Polymesoda bengalensis and Gafrarium pectinatum) and six types of gastropods (Nerita balteata, Nerita picea, Neritina turrita, Pila ampullacea, Cassidula aurisfelis, and Littoraria melanostoma). The relationship between the percentage of mangrove canopy cover and abundance of mollusks in the Benoa Bay mangrove ecosystem is very strong (r) of 0.920. The higher the percentage value of mangrove canopy cover, the higher the mollusks abundance.

scholarly journals Keanekaragaman Vegetasi Mangrove di Pantai Tanamon Sulawesi Utara (Diversity of Mangrove Vegetation in Tanamon Beach North Sulawesi)

2014 ◽  
Vol 3 (2) ◽  
Author(s):  
Eka Yuningsih ◽  
Herni E.I Simbala ◽  
Febby E.F Kandou ◽  
Saroyo Sumarto
Keyword(s):  
Avicennia Marina ◽  
Importance Value Index ◽  
Importance Value ◽  
Purposive Sampling ◽  
Terminalia Catappa ◽  
Nypa Fruticans ◽  
Rhizophora Apiculata ◽  
Xylocarpus Granatum ◽  
Sonneratia Alba ◽  
Mangrove Vegetation

AbstrakStudi keanekaragaman dan indeks nilai penting telah dilakukan pada vegetasi mangrove di kawasan Pantai Tanamon dengan menggunakan metode purposive sampling. Ukuran petak ditentukan dengan menggunakan kategori pengelompokan semai (2x2 m2), pancang (5x5 m2), tiang (10x10 m2) dan pohon (20x20 m2). Keanekaragaman vegetasi mangrove di Pantai Tanamon ditentukan dengan menggunakan rumus indeks keanekaragaman Shannon-Wienner. Hasil penelitian menunjukkan bahwa keanekaragaman vegetasi tergolong sedang dengan nilai indeks 1,412. Di kawasan Pantai Tanamon terdapat 6 jenis mangrove yaitu Avicennia marina, Sonneratia alba, Xylocarpus granatum, Rhizophora apiculata, Nypa fruticans dan Terminalia catappa. Indeks nilai penting tertinggi pada pada X. granatum untuk kategori semai (72,977 %), A. marina untuk kategori pancang (80,357 %), A. marina untuk kategori tiang (91,623 %) dan S. alba untuk kategori pohon (142,191 %).Kata kunci: mangrove, keanekaragaman, PantaiTanamonAbstractA study on the diversity and the importance value index of mangrove vegetation in the area of Tanamon Beach was conducted using purposive sampling method. Plot size was determined using classification category of seedling (2x2 m2), stake (5x5 m2), pole (10x10 m2) and tree (20x20 m2). The diversity of mangrove vegetation in the Tanamon Beach was determined using the diversity index formula of Shannon-Wienner. The results indicated that vegetation diversity was medium and the index value was 1.412. The mangrove vegetation consisted of 6 species, i.e. Avicennia marina, Sonneratia alba, Xylocarpus granatum, Rhizophora apiculata, Nypa fruticans and Terminalia catappa. The highest importance-value-index was in the X. granatum seedling (72.977 %), A. marina stake (80.357 %), A. marina pole (91.623 %) and S. alba tree (142.191 %).Keywords: mangrove, diversity, Tanamon Beach

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