scholarly journals ĐẶC TRƯNG NGUỒN LỢI CÁ TRONG CÁC HỆ SINH THÁI Ở KHU DỰ TRỮ SINH QUYỂN THẾ GIỚI CÙ LAO CHÀM - HỘI AN

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Nguyen Van Long ◽  
Mai Xuan Dat
Keyword(s):  
Coral Reefs ◽  
Fish Fauna ◽  
Biosphere Reserve ◽  
Seagrass Beds ◽  
Transitional Waters ◽  
Marine Habitats ◽  
Soft Bottoms ◽  
Dry Seasons ◽  
Nipa Palm ◽  
Wet And Dry Seasons

Assessments of fish fauna in the World Biosphere Reserve of Cu Lao Cham - Hoi An were based on analyses of data of visual censuses and samples collected at 5 sites of nipa palm, 9 sites of seagrass beds and 15 sites of coral reefs in June 2016, 200 samples from 25 fishing gears in wet and dry seasons (November 2015 and June 2016), and species composition gathered from previous (1994, 2004 and 2008) and recent studies (2017). A total of 356 species of 186 genera and 81 families of fishes were found in the waters of the Biosphere, in which some families were the most common including wrasses (Labridae: 42 species), damselfishes (Pomacentridae: 35), butterflyfishes (Chaetodontidae: 24), jack and travellies (Carangidae: 17), groupers (Serranidae: 14), surgeonfishes (Acanthuridae) and gobies (Gobiidae) with 11 species for each family, snappers (Lutjanidae: 10). The number of species in Cu Lao Cham waters (253 species) was 2.8 times higher than that in the Thu Bon estuary (91 species) and 4.2 times higher than that in transitional waters between the Thu Bon estuary and Cu Lao Cham (60 species). The coral reefs contributed 249 species and this was 8.6 times higher than that in the nipa palm (29 species), 6.5 times higher than in the seagrass beds (38 species) and 3.5 times higher than in the soft bottoms (71 species), however there were no significant differences between the nipa palm and the seagrass beds in the Thu Bon estuary. Among them, there were 10 valuable species of fishes found both in the Thu Bon estuary and Cu Lao Cham islands, and this indicates a high potential connectivity of these species among marine habitats in the two locations mentioned above.

scholarly journals Temporal changes of key marine habitats in the World Biosphere Reserve of Cu Lao Cham - Hoi An, Quang Nam province

2021 ◽  
Vol 21 (2) ◽  
pp. 191-200
Author(s):  
Long Nguyen Van ◽  
Hoang Son Tong Phuoc
Keyword(s):  
Coral Reefs ◽  
Biosphere Reserve ◽  
Temporal Changes ◽  
Aerial Images ◽  
Marine Biodiversity ◽  
Seagrass Beds ◽  
Marine Habitats ◽  
Sensing Technology ◽  
The World ◽  
Key Sites

Assessments of marine habitats have played an essential role in the management and sustainable uses of marine biodiversity resources. Spatial and temporal changes in distribution and area of crucial marine habitats in the World Biosphere Reserve of Cu Lao Cham - Hoi An were assessed using remote sensing technology (Landsat 5-TM, SPOT4, and AVNIR2 Sentinel 2-MS) and aerial images in combination with ground-truthing at 60 key sites in the year of 2016 and back-interpretation for the years of 2004 and 2008. This study shows some 579 ha of coral reefs, 117 ha of mangrove forest (mainly by Nypa palm), and 43 ha of seagrass beds recorded in 2016. There was some 112.5 ha, including 77.1 ha of the Nypa palm in the Thu Bon estuaries, 34.6 ha of seagrass beds (Bai Ong and Bai Huong in Cu Lao Cham islands), and 0.8 ha of coral reefs lost between 2004 and 2016 due to development of infrastructure and marine culture. The declines of the Nypa palm and the seagrass beds in the Thu Bon estuaries have been threatening to the maintenance of essential nursery grounds of target species, especially in the area surrounding the Nypa palm forest “rung dua bay mau” at Cam Thanh commune.

scholarly journals STATUS AND TRENDS OF CHANGE IN DISTRIBUTION OF MARINE HABITATS IN NHA TRANG BAY

2018 ◽  
Vol 17 (4) ◽  
pp. 469-479
Author(s):  
Nguyen Van Long ◽  
Tong Phuoc Hoang Son
Keyword(s):  
Remote Sensing ◽  
Coral Reefs ◽  
Aerial Images ◽  
Landsat 8 ◽  
Seagrass Beds ◽  
Marine Habitats ◽  
Status And Trends ◽  
Nha Trang Bay ◽  
Key Sites ◽  
Ground Truthing

Assessments of status and temporal changes in distribution of marine habitats in Nha Trang bay were conducted by using interpretation of remote sensing (Orbview 3, SPOT5, ALOS-AVNIR2 and Landsat 8-LCM) and aerial images in combination with ground truthing at 50 key sites representing coral reefs (25 sites), seagrass beds (10 sites), mangroves (5 sites), rocks (5 sites) and sand (5 sites) in 2015. A total of 812 ha of key marine habitats was recorded in 2015 including 754.1 ha of coral reefs, 52.4 ha of seagrass beds and 5.4 ha of mangroves. There was a notable decline in areas of the above marine habitats in the period of 2002 - 2015, in which 64 ha of seagrass beds (equivalent to 45%; mainly at Bai Tien, Phu Quy, Mui Nam and Vung Me, Đam Gia, Song Lo) and 117.4 ha of coral reefs (equivalent to 13.5%; mainly at Dam Gia, Duong De, Song Lo, Bai Tien and Eo Co) have been lost with an exception of increase of 3.1 ha of mangroves by new transplantation project conducted by Nha Trang MPA authority in Dam Bay during the last few years. The decline in the areas of coral reefs and seagrass beds has been caused by expansion and reclaimation of infrastructure for community and tourism development in recent years.

Checklist of the marine and estuarine fishes of New Ireland Province, Papua New Guinea, western Pacific Ocean, with 810 new records

Zootaxa ◽  
2019 ◽  
Vol 4588 (1) ◽  
pp. 1
Author(s):  
RONALD FRICKE ◽  
GERALD R. ALLEN ◽  
DIETMAR AMON ◽  
SERGE ANDRÉFOUËT ◽  
WEI-JEN CHEN ◽  
...  
Keyword(s):  
New Records ◽  
Fish Fauna ◽  
Wide Distribution ◽  
Estuarine Fish ◽  
Western Pacific Ocean ◽  
Transitional Waters ◽  
Estuarine Fishes ◽  
Marine Habitats ◽  
Freshwater Habitats ◽  
Wide Distribution Range

A checklist of the marine and estuarine fishes of New Ireland Province is presented, with special emphasis on Kavieng District, combining both previous and new records. After the recent KAVIENG 2014 expedition, a total of 1325 species in 153 families were recorded from the region. The largest families are the Gobiidae, Pomacentridae, Labridae, Serranidae, Apogonidae, Lutjanidae, Chaetodontidae, Blenniidae, Carangidae, Acanthuridae, Scaridae, Holocentridae, Syn-gnathidae, Lethrinidae and Scorpaenidae. A total of 810 fish species (61.1 % of the total marine and estuarine fish fauna) are recorded from New Ireland for the first time.The fish fauna of New Ireland includes 142 species in transitional waters and 1264 species in marine habitats, and 54 species species in freshwater habitats. Zoogeographically, 1179 species have a wide distribution range, most frequently a broad Indo-West Pacific distribution. Among the remaining species, just 12 are endemic to New Ireland. 

scholarly journals Additions to the Reef Fish Fauna of Cayo Albuquerque, Seaflower Biosphere Reserve (Colombian Caribbean)

2020 ◽  
Author(s):  
Natalia Rivas E. ◽  
Arturo Acero P. ◽  
Jose J. Tavera ◽  
Alfredo Abril-Howard ◽  
Nacor Bolaños-Cubillos
Keyword(s):  
Species Richness ◽  
Coral Reef ◽  
Reef Fish ◽  
Fish Fauna ◽  
Biosphere Reserve ◽  
Seagrass Beds ◽  
San Andres

Presents the list of fish fauna gathered during a scientific expedition to Cayo Albuquerque (12°07’N, 81°52’2” W) Colombia, the southernmost cay of the Archipelago of San Andrés, Providencia and Santa Catalina, which includes the Seaflower Biosphere Reserve. Data was collected through visual censuses in coral reef formations and seagrass beds, between September 23 and October 3, 2018. A total of 191 species were registered, distributed in 50 families, with Labridae (24) and Serranidae (22) showing the highest species richness. Twenty-five species are new reports for Albuquerque.

scholarly journals Species diversity and status of key marine habitats in Cu Lao Cham Marine Protected Area, Quang Nam province

2021 ◽  
Vol 21 (2) ◽  
pp. 201-213
Author(s):  
Long Nguyen Van ◽  
Tuan Vo Si ◽  
Vu Nguyen Van
Keyword(s):  
Coral Reefs ◽  
Protected Area ◽  
Marine Protected Area ◽  
Good Condition ◽  
Marine Biodiversity ◽  
Rocky Shores ◽  
Seagrass Beds ◽  
Soft Bottom ◽  
Marine Habitats ◽  
Submerged Reefs

In recent years, several studies relating to assessments of marine biodiversity conducted in the Cu Lao Cham Marine Protected Area. However, the data and information from these studies have not been synthesized. This study was based on analyses of data and information from 22 sites of coral reefs, ten sites of rocky shores, five sites of seagrass beds, eight sites of Sargassum beds, and four sites on soft-bottom communities conducted in 1994, 2004, 2008, 2016 and 2017. A total of 976 species belonging to 223 families of 9 common groups (330 species corals, 277 species of fishes, 156 species mollusks, 91 species seaweeds, 71 species of polychaetes, 24 species crustaceans, 22 species of echinoderms and five species of seagrasses) were found. Coral reefs supported the highest number of species (779 species) compared to that of the soft- bottom (135 species), seagrass beds (124 species), and rocky shores (58 species). In general, most of the coral reefs and seagrass beds were not in good condition, with a low mean cover of hard corals (24,8 ± 15,7%) and of seagrasses (11,9 ± 11,6%). Densities of target macro-invertebrates and fishes with large sizes and high value were extremely low, giving exception of a high density of large fishes of fusiliers, snappers, emperors, rabbitfishes, queenfishes, barracuda) found at Bai Dau Tai, Bai Bac, Hon Mo, Hon Tai and the submerged reefs (Ran La, Ran Manh).

scholarly journals Additions to the Reef Fish Fauna of Cayo Albuquerque, Seaflower Biosphere Reserve (Colombian Caribbean)

2020 ◽  
Author(s):  
Natalia Rivas E. ◽  
Arturo Acero P. ◽  
Jose J. Tavera ◽  
Alfredo Abril-Howard ◽  
Nacor Bolaños-Cubillos
Keyword(s):  
Species Richness ◽  
Coral Reef ◽  
Reef Fish ◽  
Fish Fauna ◽  
Biosphere Reserve ◽  
Seagrass Beds ◽  
San Andres

Presents the list of fish fauna gathered during a scientific expedition to Cayo Albuquerque (12°07’N, 81°52’2” W) Colombia, the southernmost cay of the Archipelago of San Andrés, Providencia and Santa Catalina, which includes the Seaflower Biosphere Reserve. Data was collected through visual censuses in coral reef formations and seagrass beds, between September 23 and October 3, 2018. A total of 191 species were registered, distributed in 50 families, with Labridae (24) and Serranidae (22) showing the highest species richness. Twenty-five species are new reports for Albuquerque.

Pemetaan Pulau Kecil Gelasa Kabupaten Bangka Tengah

2019 ◽  
Vol 2 (1) ◽  
pp. 11-14
Author(s):  
Wahyu Adi
Keyword(s):  
Coral Reefs ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Image Interpretation ◽  
Vegetation Coverage ◽  
Small Island ◽  
Shallow Waters ◽  
Small Islands ◽  
Seagrass Beds ◽  
Cover Density

Pulau Kecil Gelasa merupakan daerah yang belum banyak diteliti. Pemetaan ekosistem di pulau kecil dilakukan dengan bantuan citra Advanced Land Observing Satellite (ALOS). Penelitian terdahulu diketahui bahwa ALOS memiliki kemampuan memetakan terumbu karang dan padang lamun di perairan dangkal serta mampu memetakan kerapatan penutupan vegetasi. Metode interpretasi citra menggunakan alogaritma indeks vegetasi pada citra ALOS yaitu NDVI (Normalized Difference Vegetation Index), serta pendekatan Lyzengga untuk mengkoreksi kolom perairan. Hasil penelitian didapatkan luasan Padang Lamun di perairan dangkal 41,99 Ha, luasan Terumbu Karang 125,57 Ha. Hasil NDVI di daratan/ pulau kecil Gelasa untuk Vegetasi Rapat seluas 47,62 Ha; luasan penutupan Vegetasi Sedang 105,86 Ha; dan penutupan Vegetasi Jarang adalah 34,24 Ha.   Small Island Gelasa rarely studied. Mapping ecosystems on small islands with the image of Advanced Land Observing Satellite (ALOS). Previous research has found that ALOS has the ability to map coral reefs and seagrass beds in shallow water, and is able to map vegetation cover density. The method of image interpretation uses the vegetation index algorithm in the ALOS image, NDVI (Normalized Difference Vegetation Index), and the Lyzengga approach to correct the water column. The results of the study were obtained in the area of Seagrass Padang in the shallow waters of 41.99 ha, the area of coral reefs was 125.57 ha. NDVI results on land / small islands Gelasa for dense vegetation of 47.62 ha; area of Medium Vegetation coverage 105.86 Ha; and the coverage of Rare Vegetation is 34.24 Ha.

scholarly journals Applying the ecosystem services - EBM framework to sustainably manage Qatar's coral reefs and seagrass beds

2021 ◽  
Vol 205 ◽  
pp. 105566
Author(s):  
Lucia M. Fanning ◽  
Mera Nasser Al-Naimi ◽  
Pedro Range ◽  
Abdel-Samad M. Ali ◽  
Jessica Bouwmeester ◽  
...  
Keyword(s):  
Ecosystem Services ◽  
Coral Reefs ◽  
Seagrass Beds

scholarly journals Seasonal and Temperature Dependent Variations in Proximate Parameters and Mineral Elements of Smoke-Dried Catfish (Clarias gariepinus, Burchell, 1822) using Traditional and Eco-Friendly Kilns in Lagos, Nigeria

2020 ◽  
Vol 24 (4) ◽  
pp. 639-643
Author(s):  
M.M. Ogunbambo
Keyword(s):  
Crude Protein ◽  
Clarias Gariepinus ◽  
Mineral Elements ◽  
Drying Process ◽  
Temperature Dependent ◽  
Crude Fibre ◽  
Significant Difference ◽  
Dry Seasons ◽  
Mineral Compositions ◽  
Wet And Dry Seasons

Smoke-drying Clarias gariepinus (catfish) provides animal protein and a source of livelihood in Lagos, Nigeria. Changes occurring to seasonal and mineral compositions of smoke-dried catfish using local Traditional Drum Kiln (TDK) and a newly constructed Eco-Friendly Kiln (EFK) fitted with a flame, drying and electronic components was carried out in this study. The smoke-drying process was carried out in both wet and dry seasons and smoke-dried catfish samples stored at ambient and adjusted refrigerated temperatures of 28 and 4 0C. The smoke-drying procedure was  standardized at 60 - 80 0C and kiln lasted 24 ± 3 hours. Moisture content results showed a significant difference when the catfish samples were smoke-dried using TDK and EFK and stored in ambient and controlled temperatures in both wet and dry seasons while crude protein, lipid, ash and crude fibre values were significantly different when stored only in dry season. Mineral elements phosphorus, sodium, copper, magnesium and iron showed a significant difference when stored at both temperatures and seasons using both kilns. Mineral elements were found to be most stable in smoke-dried catfish samples when stored at controlled temperatures. This work proved that standardizing smoke-drying process using both kilns resulted in good quality smoke-dried catfish but showed that higher biochemical values were obtained when EFK is used. Key words: Nigeria, Smoke-drying Kilns, Seasons, Ambient, Controlled Temperatures

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