New data on diversity and distribution of fish in shallow waters in western Lake Balkhash (Kazakhstan)

Mangroves have been shown to provide valuable nursery grounds to juvenile fishes, yet little is known regarding larval distribution and settlement processes in this habitat. To investigate fish larvae in mangrove habitat in a semi-isolated lagoon (surface area 750m2), we employed multiple catch methods: plankton tows, minnow traps, and light traps during June–August 2008 and 2009. Overall, nine families of fish larvae were caught in the light traps. Light traps caught significantly more fish larvae during the new moon compared with the full moon. Plankton tow nets caught early-stage, unidentifiable (without DNA analysis) larvae. Minnow traps only caught a total of three fish larvae. Overall, scarids (parrotfish) and lutjanids (snappers) were the most common larvae from coral-reef fish families and were found at sites over 1km upstream of the mouth of the mangrove lagoon. Without the aid of tidal influence (and nets requiring hydrodynamic force), sampling is difficult in these turbid, shallow waters.

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Habitat Suitability Mapping of Rastrelliger Brachysoma Using MODIS Image in WPP 711

Indonesian Journal of Geography ◽

10.22146/ijg.39919 ◽

2019 ◽

Vol 51 (2) ◽

pp. 147

Author(s):

Prama Ardha Aryaguna

Keyword(s):

Remote Sensing ◽

Habitat Suitability ◽

Fish Habitat ◽

Species Distribution Modeling ◽

Shallow Waters ◽

Habitat Location ◽

The Pacific ◽

Modis Image ◽

The Pacific Ocean ◽

Distribution Of Fish

Important factors that needs to be understood in the management of fishery resources is fish habitat. Fish habitat is an ideal water conditions of a fish species to spawn, breed, feed and grow into adults. Distribution of fish habitat can be approach using variety method, such Habitat Suitability/Species Distribution Modeling. Remote sensing analysis is effective method in providing daily oceanography information. Modis is Remote sensing imagery can be used for modeling Rastrelliger brachysoma fish habitat. Date acquired MODIS image at 28 March 2015, depend on existing field data. The results indicate that, the highest probability of Rastrelliger brachysoma fish habitat location in WPP 711 are in the middle waters of the WPP border between the deep sea of Indonesia and the Pacific Ocean. The lowest probability value for habitat of Rastrelliger brachysoma fish is in the southern shallow waters of Bangka Belitung island which is around 0.1-0.25.

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SPATIAL DISTRIBUTION OF FISH DIVERSITY IN GODAVARI RIVER AT AMBAD STRETCH

JOURNAL OF AQUACULTURE IN THE TROPICS ◽

10.32381/jat.2019.34.1-2.7 ◽

2019 ◽

Vol 34 (1-2) ◽

pp. 81-93

Author(s):

D. D. BHUTEKAR ◽

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S. B. AHER ◽

M. G. BABARE ◽

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...

Keyword(s):

Spatial Distribution ◽

Fish Diversity ◽

Godavari River ◽

Distribution Of Fish

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Pemetaan Pulau Kecil Gelasa Kabupaten Bangka Tengah

Journal of Tropical Marine Science ◽

10.33019/jour.trop.mar.sci.v2i1.909 ◽

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.

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