scholarly journals Economic Analysis of Coral Reefs in Bahoi Village, North Minahasa District

2016 ◽  
Vol 3 (2) ◽  
pp. 112
Author(s):  
Unstain N. W. J. Rembet ◽  
Adnan S. Wantasen
Keyword(s):  
Coral Reefs ◽  
Economic Condition ◽  
Ecological Condition ◽  
Fish Diversity ◽  
Management Activity ◽  
Economic Values ◽  
Fishing Trip ◽  
Coral Coverage ◽  
Total Fish ◽  
Direct Use

For the management activity of coastal area, especially coral reefs, need basic data about economic condition of the coral reefs. Therefore, to manage the ecosystem of coral reefs in Bahoi Village, need an analysis act of economic condition. Whereas, for the economic values, analyze base on direct use of the society. Total economic values of the coral reefs in Bahoi Village, analyze only from the direct use. At the moment its about Rp.2.420.130.000/year. This values is the acumulation from the direct use of fisheries (coral fish) about Rp.2.368.980.000/year and the direct use of the tourism about Rp.51.150.000/year. The relation of ecological and economic condition, base on the result of the coefficient values is 0.0887 for coral and 0.2470 for algae, indicated that 1% growth of the coral coverage unit, will raise 8.87% unit of the total fish. Likewise, 1% growth of the algae coverage, will raise 24.70% of the total fish. In other words, every growth of the coral coverage and algae coverage, will raise the total fish. The relation of fish diversity and fishing trip to the fisherman income, the coefficient values is 2.7475 for fish diversity and 1.1693 for fishing trip, indicated that 1% growth of fish diversity fish, will raise 274.75% unit of the fisherman income. Likewise, 1% growth of fishing trip per month, will raise 116.93% unit of the fisherman income. To improve the ecological condition that finally can increase the society income, therefore activity that cause damage to the coral reefs, such as fishing with “bubu” and coral mining, need to be stopped. It’s also need to develop the other benefit of coral reefs, like tourism. Key words : analysis, ekonomic, ekological, coral reff Abstrak   Untuk suatu kegiatan pengelolaan wilayah pesisir khususnya terumbu karang, diperlukan data dasar mengenai nilai ekonomi dari terumbu karang. Oleh sebab itu guna pengelolaan ekosistem terumbu karang di Desa Bahoi perlu dilakukan pengkajian ekonomi. Nilai ekonomi total dari terumbu karang di Desa Bahoi hanya dilihat dari nilai manfaat langsung, yang saat ini memiliki nilai sebesar Rp 2.420.130.000/tahun. Nilai ini merupakan akumulasi dari manfaat langsung perikanan tangkap (ikan karang) sebesar Rp 2.368.980.000/tahun dan manfaat langsung wisata sebesar Rp 51.150.000/tahun. Hubungan kondisi ekologi dan ekonomi dilihat dari nilai koefisien yang diperoleh yaitu 0.0887 untuk karang batu dan 0.2470 untuk algae  menunjukkan bahwa setiap pertambahan 1% dari satuan tutupan karang batu akan diikuti dengan penambahan 8.87% satuan jumlah ikan. Demikian juga dengan penambahan 1% satuan tutupan algae akan dikuti dengan penambahan 24.70% satuan jumlah ikan. Dengan kata lain, setiap penambahan tutupan karang dan tutupan algae akan diikuti dengan peningkatan jumlah ikan. Dalam hubungan keanekaragaman ikan dan trip penangkapan terhadap pendapatan nelayan nilai koefisien yang diperoleh yaitu 2.7475 untuk keanekaragaman ikan dan 1.1693 untuk trip penangkapan, menunjukkan bahwa setiap pertambahan 1% dari satuan keanekaragaman ikan akan diikuti dengan penambahan 274.75% satuan pendapatan nelayan. Demikian juga dengan penambahan 1% satuan jumlah trip per bulan akan dikuti dengan penambahan 116.93% satuan pendapatan nelayan. Untuk meningkatkan kondisi ekologi, yang pada akhirnya akan meningkatkan penghasilan masyarakat, maka kegiatan yang mengakibatkan rusaknya terumbu karang seperti penangkapan ikan dengan bubu dan penambangan karang harus dihentikan, serta perlu dikembangkannya manfaat lain terumbu karang seperti pariwisata yang sangat potensial untuk dikembangkan di wilayah ini. Kata-kata kunci : kajian, ekonomi, ekologi, terumbu karang   1 Dibiayai oleh Direktorat Pendidikan Tinggi dalam program PENPRINAS MP3EI 2015-2016 2 Staf pengajar pada Fakultas Perikanan dan Ilmu Kelautan UNSRAT

scholarly journals Assessment of fish diversity and socio-economic condition of fishermen in Bangladesh

2018 ◽  
Vol 4 (1) ◽  
pp. 69-76
Author(s):  
Md Ishtiaque Jahan ◽  
Mohammad Shafiqul Alam ◽  
Md Shamsul Karim ◽  
Nargis Sultana ◽  
Md Mamun ◽  
...  
Keyword(s):  
Economic Condition ◽  
Nuclear Family ◽  
Age Groups ◽  
Fish Fauna ◽  
Survey Method ◽  
Fish Diversity ◽  
Catla Catla ◽  
Labeo Bata ◽  
Xenentodon Cancila ◽  
Puntius Sarana

The main objectives of the study were to determine the present status of fish biodiversity and socio-economic condition of fishermen in Belai beel during February 2016 to September 2016 by survey method using questionnaires, field visit and interviewing with the fishermen. The results indicated that about 27 species of fish fauna were found in the Belai beel, among them 23 species were indigenous and 4 species were exotic. Major dominant species were Rui (Labeo rohita), Catla (Catla catla), Bata (Labeo bata), Shingi (Heteropeneustes fossilis), Magur (Clarius batrachus), Tengra (Mystus tengra), Chanda (Chanda nama), Kakila (Xenentodon cancila), Common carp (Cyprinus carpio), Mola (Amblypharyngodon mola) in the study area. During the study period two critically endangered (Puntius sarana, Pangasius pangasius), two endangered (Labeo bata, Channa marulius), and three vulnerable (Chanda nama, Channa orientalis, Notopterus notopterus) fish species were found in the Belai beel. Analysis of socio-economic condition of fishermen showed that maximum (70%) had nuclear family and others (30%) had joint family, as well as fishermen, belonged to the age groups of 31 to 40 years (50%) and the others were 15 to 30 (20%), 41 to 50 (18%), 51 to 60 (10%), 61 to70 (2%). Overall, the present study suggested that fishermen communities should be educated by creating awareness for the proper conservation, management, and enhancement of biodiversity in the Belaibeel.Asian J. Med. Biol. Res. March 2018, 4(1): 69-76

scholarly journals Cleaner Fish Drives Local Fish Diversity on Coral Reefs

2003 ◽  
Vol 13 (1) ◽  
pp. 64-67 ◽  
Author(s):  
Alexandra S Grutter ◽  
Jan Maree Murphy ◽  
J.Howard Choat
Keyword(s):  
Coral Reefs ◽  
Fish Diversity ◽  
Cleaner Fish

Fish diversity and biomass in northern Canadian lakes: northern lakes are more diverse and have greater biomass than expected based on species–energy theory

2015 ◽  
Vol 72 (2) ◽  
pp. 226-237 ◽  
Author(s):  
Pasan Samarasin ◽  
Charles K. Minns ◽  
Brian J. Shuter ◽  
William M. Tonn ◽  
Michael D. Rennie
Keyword(s):  
Climate Change ◽  
Species Richness ◽  
Lake Trout ◽  
Fish Diversity ◽  
Mining District ◽  
Lake Area ◽  
Resource Exploitation ◽  
Diamond Mining ◽  
Significant Difference ◽  
Total Fish

Biodiversity in northern Canada (north of 60°N latitude) is threatened, primarily by increasing resource exploitation and by climate change. Unfortunately, we have relatively limited knowledge of aquatic biodiversity for this region, making it difficult to develop suitable policies to manage these threats. Here we describe, quantify, and test hypotheses related to fish biodiversity and biomass in 37 lakes in a diamond mining district (the Barrenlands) in the Northwest Territories, Canada (64°N, 110°W). To estimate species richness and biomass of fish, we took advantage of exhaustive sampling and monitoring surveys conducted in the region and compared our northern estimates against estimates from southern Canadian lakes. We found that most of the 37 northern lakes contained two to four species, with the largest lake containing eight species. Salmonids dominated this system, with lake trout (Salvelinus namaycush) being the dominant species in abundance and biomass. Comparative analysis with similar-sized southern Canadian lakes showed no significant difference in the slopes of species richness versus lake area curves. Surprisingly, total fish biomass distributions for northern, Barrenlands lakes were also similar to southern, Ontario lakes. Overall, our results suggest that Barrenlands lakes are important natural resources of Canada that should be conserved for the future. Under anticipated scenarios of climate change, these lakes may represent important refugia for coldwater fishes (e.g., lake trout) as habitats at the southern edges of their ranges become more limiting.

scholarly journals Keragaman genetik ikan lemuru (Sardinella lemuru) di wilayah perairan Indonesia

2020 ◽  
Vol 7 (1) ◽  
pp. 28
Author(s):  
I Gusti Ayu Diah Hendiari ◽  
Aida Sartimbul ◽  
I Wayan Arthana ◽  
Gde Raka Angga Kartika
Keyword(s):  
Genetic Diversity ◽  
Human Body ◽  
Value Of Information ◽  
Haplotype Diversity ◽  
High Rate ◽  
Fish Diversity ◽  
Omega 3 ◽  
Economic Values ◽  
High Level ◽  
High Diversity

Ikan Lemuru (Sardinella lemuru) merupakan komoditas perikanan pelagis yang sangat bernilai ekonomis dikalangan masyarakat Indonesia. Ikan Lemuru memiliki kelebihan yaitu keberadaannya yang berlimpah di perairan lau Indonesia, harganya yang sangat murah serta kandungan omega-3 yang sangat baik untuk tubuh. Kebutuhan akan ikan lemuru (Sardinella lemuru) yang tinggi menyebabkan tingginya angka penangkapan komoditas ini di perairain, sehingga dapat menyebabkan resiko penurunan jumlah populasi dialam. Pengelolaan yang tepat pada komoditas ini tentunya diperlukan akan dapat meminimalisir resiko yang dapat terjadi. Pengelolaan akan dapat terlaksana dengan tepat apabila berdasarkan atas data informasi yang memadai, salah satunya adalah informasi mengenai keragaman genetiknya. Kajian ini mengumpulkan pustaka dari penelitian terdahulu mengenai keragaman genetik ikan lemuru (Sardinella lemuru) di Wilayah Perairan Indonesia untuk dapat memberikan gambaran mengenai keragaman Ikan Lemuru dari segi genetiknya. Nilai keragaman genetik dilihat dari nilai keragaman haplotipe (Hd) karena keduanya memiliki kolerasi yang positif untuk menggambarkan keragaman genetik dari suatu komoditas. Hasil kajian memperlihatkan nilai keragaman genetik ikan lemuru (Sardinella lemuru) di Wilayah Perairan Indonesia memiliki nilai yang termasuk kategori tinggi. Hasil ini menggambarkan bahwa ditengah tingginya kegiatan penangkapan, ikan lemuru (Sardinella lemuru) secara genetik masih memiliki keragaman yang tinggi sehingga dimungkinkan komoditas Ikan Lemuru memiliki adaptasi yang tinggi terhadap kondisi lingkungan.Kata kunci: Sardinella lemuru, keragaman genetik, keragaman haplotipe Sardinella lemuru is pelagic commodities that have economic values for the Indonesian. S. lemuru has some of the major advantages, such as much population on Indonesian marine, low price, and has Omega-3 for the human body. The high demands of Lemuru Fish cause a high rate of cached, that can cause the risk of population degradation. Proper management of these commodities are needed to decrease the risk impact, that can be done rightly based on the equal value of information, and one of them is genetic diversity. This research compiles the recent researches about the genetic diversity of the Sardinella lemuru in Indonesian to get the explanation about Lemuru Fish diversity. The value of genetic diversity observed is based on the diversity value of Haplotype (Hd), because these two values have a positive correlation to make a whole representation from a commodity. The results of this review show that the genetic diversity of Lemuru Fish on Indonesian marine territorial has the high-value category. These results explain that in the high activities of fishing, Lemuru Fish genetically still have a high diversity that leads to the conclusion Lemuru Fish commodities has a high-level ability to adapt from environmental conditions.Keywords: Sardinella lemuru; genetic diversity; haplotype diversity 

scholarly journals Fish Composition and Diversity of Four Coral Reefs in the South China Sea Based on Hand-Line Catch

2021 ◽  
Vol 10 (1) ◽  
pp. 38
Author(s):  
Yuanjie Li ◽  
Zuozhi Chen ◽  
Jun Zhang
Keyword(s):  
South China Sea ◽  
Coral Reefs ◽  
South China ◽  
Dominant Species ◽  
The South China Sea ◽  
Fish Diversity ◽  
The South ◽  
Factors Affecting ◽  
China Sea ◽  
Sea Fish

To improve the overall understanding of the fish diversity and spatial patterns of major coral reefs in the South China Sea, fish assemblage composition, dominant species, biodiversity indices, and multivariate analysis of community structure were reported for four major coral reefs based on hand-line survey data in May and September 2018. A total of five orders, 21 families, 45 genera and 121 species of fish were recorded with Perciformes (78.5%) being the most diverse. The highest number (5) of dominant species was found near Chenhang Island while the lowest (2) number was detected at Zhubi Reef. The highest abundance index (7.21) occurred at Zhubi Reef, while the Shannon–Wiener diversity (4.80), Pielou’s evenness (0.81), and Simpson’s dominance (0.95) indexes were all highest at Qiliangyu Island. Based on cluster analysis and non-metric multi-dimensional scaling (NMDS), fish communities varied more spatially than seasonally. Our results led us to hypothesize that the habitat complexity and level of anthropogenic disturbance were the main factors affecting the composition of reef-dwelling fish on each coral reef. Topography was likely responsible for most variation in the spatial pattern of fish diversity.

Reef fish diversity at Aldabra Atoll, Seychelles, during the five years following the 1998 coral bleaching event

2005 ◽  
Vol 363 (1826) ◽  
pp. 257-261 ◽  
Author(s):  
Nigel Downing ◽  
Raymond Buckley ◽  
Ben Stobart ◽  
Larry LeClair ◽  
Kristian Teleki
Keyword(s):  
Species Diversity ◽  
Fish Species ◽  
Coral Bleaching ◽  
Fish Diversity ◽  
Population Changes ◽  
Anthropogenic Pressures ◽  
Outer Reef ◽  
Total Fish ◽  
Related Population ◽  
Fish Species Diversity

Quantitative surveys of fish-species diversity were undertaken at 10 m and 20 m water depth on the outer reef at Aldabra Atoll, southern Seychelles, between November 1999 and May 2003. No significant changes in total fish-species diversity, numbers of families represented by these species, or numbers of pomacentrid or chaetodontid species were seen, contrary to fish-diversity changes seen on coral bleaching-impacted reefs elsewhere. The lack of additional anthropogenic pressures at remote Aldabara may make this system, and others like it, more tolerant of bleaching-related population changes.

scholarly journals Maintenance of fish diversity on disturbed coral reefs

Coral Reefs ◽  
2008 ◽  
Vol 28 (1) ◽  
pp. 3-14 ◽  
Author(s):  
S. K. Wilson ◽  
A. M. Dolman ◽  
A. J. Cheal ◽  
M. J. Emslie ◽  
M. S. Pratchett ◽  
...  
Keyword(s):  
Coral Reefs ◽  
Fish Diversity

A role for partially protected areas on coral reefs: maintaining fish diversity?

2011 ◽  
Vol 21 (3) ◽  
pp. 231-238 ◽  
Author(s):  
Elizabeth H. M. Tyler ◽  
Andrea manica ◽  
Narriman Jiddawi ◽  
Martin R. Speight
Keyword(s):  
Coral Reefs ◽  
Protected Areas ◽  
Fish Diversity

scholarly journals BENTHIC FORAMINIFERA AS BIOINDICATOR OF CORAL REEF ENVIRONMENTAL CONDITION BASED ON FORAM Index IN NATUNA ISLANDS, PROVINCE OF RIAU ISLANDS

2013 ◽  
Vol 5 (1) ◽  
Author(s):  
Kinanti Gitaputri ◽  
Hikmat Kasmara ◽  
Hikmat Kasmara ◽  
Hikmat Kasmara ◽  
Tatang S. Erawan ◽  
...  
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Environmental Conditions ◽  
Benthic Foraminifera ◽  
Water Environment ◽  
Survey Method ◽  
Weak Correlation ◽  
Coral Coverage ◽  
Simple Index ◽  
Environment Parameters

<p>Foraminifera is one of single-celled protozoa, living in the water environment especially marine waters. This organism can be used as bioindicator of environmental conditions of coral reefs through a simple index called FORAM Index. The purpose of this research are to obtain FORAM Index values​, to know any species of benthic foraminifera bioindicator of coral reefs environmental conditions that have been found and to find out whether there is a relationship between FORAM Index to the condition of coral reefs based on coral coverage percentage. The research used survey method on sediment sampling and measurement of environment parameters by P20 LIPI team in April 2011. Several important steps in this research such as sediment samples preparation, sample observation, and sample identification. The results showed that there were 80 species and 31 genera benthic foraminifera bioindicator of coral reefs environmental conditions were found in the Natuna Islands. The condition of coral reefs in the Natuna Islands based on FORAM Index (FI) values ​​ranged from 2.6 to 5.94, and overall there was a positive relationship between FORAM Index and the condition of coral reefs based on coral coverage percentage i.e., the increase of FI was followed by the increase of coral coverage percentage.  However, in the terms of correlation there were several different results, there was a strong correlation and a weak correlation.</p> <p>Keywords: foraminifera, FORAM index, coral reef.</p>

scholarly journals Study of Fish Diversity and Livelihood Status of Fishermen in Karatoya River, Panchagarh Region

2021 ◽  
Vol 17 (2) ◽  
pp. 58-70
Author(s):  
Md. Abdur Razzaq Joadder ◽  
Sushen Roy ◽  
Dil Afroza Khanom ◽  
Syeda Nusrat Jahan ◽  
Md Al-Amin Sarker
Keyword(s):  
Power Plants ◽  
Significant Proportion ◽  
Health Facilities ◽  
Fish Diversity ◽  
Primary Level ◽  
Village Doctors ◽  
Total Fish ◽  
Pertinent Information ◽  
Tube Well ◽  
Age Range

Background: Objective: The study was conducted to investigate the fish diversity and socio-economic profiles of the fishermen of Karatoya River in Panchagarh district in the Northern part of Bangladesh. Methodology: Pertinent information was collected from forty randomly selected fishermen from the study area who were directly involved in fishing in the rivers during the period of twelve months from July 2017 to June 2018. The data interpretations showed that 50 fish species under 8 orders and 17 families were recorded from the Karatoya River during the study period. Cypriniformes was found as the most dominant order constituting 48% of the total fish populationfollowed by Channiformes (6%), Sliuriformes(18%), Clupiformes (6%), Mastacembeliformes (6%), Perciformes (12%), Beloniformes (2%), Tenaodontifomres (2%). Fishes in this river are seriously affected by the various kinds of natural and manmade causes. Under this circumstance, a better understanding of the diversity and distribution of fishes in the Karatoya River is urgently needed. Result: In the study area the fishermen age range from 16 to 65 years. It was found that most of the fishermen (35%) illiterate though a small proportion completed primary level of education. 75% percent of the fishermen used their own tube-well, while 20% and 5% used government and neighbors’ tube-well, respectively. In the study area, 55% of the fishermen were far from power plants and the rest of them had (45%) access to electricity. Majority (45%) of the fishermen was 1-10 decimal land, while 17.5% had 11-20 decimal lands and 15% had above 40 decimal lands and significant proportion of fishermen depend upon village doctors (62.5%) for their health facilities. Forty five percent of fishermen were engaged in fishing as their main occupation, 40% in agriculture and 15% in daily labor. Conclusion: Fishermen of Karatoya River were mostly illiterate, poor income, lack of training exposure and lack of awareness about their health facilities and sanitation. Journal of Science Foundation 2019;17(2):54-57

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