scholarly journals Species Composition and Community Structure of Demersal Fish Caught by a Danish Seine Fishery in the Coastal Waters of the Middle and Southern East Sea, Korea

2015 ◽  
Vol 48 (4) ◽  
pp. 529-541 ◽  
Author(s):  
Myoung Ho Sohn ◽  
Jeong-Ho Park ◽  
Byoung Sun Yoon ◽  
Young Min Choi ◽  
Jin-Koo Kim
2014 ◽  
Vol 50 (2) ◽  
pp. 131-138 ◽  
Author(s):  
Sin-Gon Kim ◽  
Choong-Sik Jang ◽  
Young-Su An ◽  
Eun-Hye Koh ◽  
Gun-Wook Baeck

2013 ◽  
Vol 1 (3) ◽  
pp. 125
Author(s):  
Valdino M E Rungkat ◽  
Jan FWS Tamanampo ◽  
Jhon L Tombokan

ABSTRACT This study was conducted to determine the species composition and commu-nity structure of Pomacentridae (relative density, diversity, dominance and even-ness of species). This research was conducted in waters of the Manado Bay, at Kelurahan Malalayang Dua shore, on August 14th, 2012. The studies was conduc-ted on 2 sites, one has 3 meters depth (01o27'40.5" NL 124o47'32.5" EL) and ano-ther at 10 meters depth (01o27'43.6" NL 124o47'27.8" EL). The results and analysis of data, the total number of species found at a depth of 2 points is 15 species, in which was found at a depth of 3 meters at a depth of 10 species and 15 species discovered 10 meters. The species most commonly found is Pomacentrus brachial and Dascyllus reticulatus. The highest relative density values at a depth of 3 meters is Dascyllus reticulatus (22%) and at depth10 meters is Pomacentrus brachialis (18%). Diversity index at 3 meters depth is 1.941 while at 10 meters is 2.326. The result showed that diversity of Pomacentridae is low at 3 meters depth and average at 10 meters depth which means moderate community hability. At both depths, there was no species dominance and the avenness was stable.   Keywords : Community Structure, Pomacentridae, Manado Gulf   ABSTRAK Penelitian ini dilakukan untuk mengetahui komposisi spesies dan struktur komunitas ikan Pomacentridae (kepadatan relatif, keanekaragaman, dominasi dan kemerataan spesies). Lokasi penelitian di Teluk Manado, tepatnya di perairan depan Kelurahan Malalayang Dua. Penelitian dilakukan pada 2 titik kedalaman yaitu kedalaman 3 meter (01o27’40.5” LU 124 o47’32.5” BT) dan kedalaman 10 meter pada koordinat (01o27’43.6” LU 124 o47’27.8” BT). Metode yang digunakan adalah metode sensus visual, dengan penentuan jalur mengunakan penanda me-teran sepanjang 50 meter yang diletakkan di daerah terumbu karang yang sejajar garis pantai. Hasil penelitian dan analisis data, jumlah total spesies yang ditemu-kan pada 2 titik kedalaman adalah 15 spesies, di mana pada kedalaman 3 meter ditemukan 10 spesies dan pada kedalaman 10 meter ditemukan 15 spesies. Spe-sies yang paling banyak ditemukan adalah Pomacentrus brachialis dan Dascyllus reticulatus. Nilai kepadatan relatif tertinggi pada kedalaman 3 meter ada-lah spe-sies Dascyllus reticulatus 22% dan pada kedalaman 10 meter adalah Pomacentrus brachialis 18%. Indeks keanekaragaman pada kedalaman 3 meter adalah 1,941 sedangkan pada kedalaman 10  meter  dengan  nilai 2,326. Hal  ini  menunjukkanbahwa keanekaragaman ikan Pomacentridae pada kedalaman 3 meter adalah rendah dan pada kedalaman 10 meter keanekaragamannya adalah sedang dengan kestabilan komunitas sedang. Pada ke dua kedalaman ini tidak ada spesies dominasi dan kemerataannya adalah stabil. Kata kunci : struktur komunitas, Pomacentridae, Teluk Manado 1Bagian dari skripsi 2Mahasiswa Program Studi Manajemen Sumberdaya Perairan FPIK-UNSRAT


2012 ◽  
Vol 48 (4) ◽  
pp. 415-427 ◽  
Author(s):  
Kwang Ho Choi ◽  
Moon Hee Han ◽  
Chang-Keun Kang ◽  
Joo Myun Park ◽  
Jung Hwa Choi ◽  
...  

Author(s):  
Luis Manjarrés ◽  
Camilo García ◽  
Arturo Acero P.

The moan objectives of Iho prosenl study were to establish iho oxistonco ol domorsal lish associations in the sholf and suporior slop© ol tho Colombian Caribboan norlhorn zono and dolormine if tho biolical paltoms dolorminotod by these associations are corrolalioned with tho patloms structured by the environmental conditions evaluated. Data woro taken Irom threo domorsal rosources assessment surveys of tho INPA-VECEPAJE Program. earned out dunng the penod 1995-1996 Tho station groups were not conslstont In terms of species composition along the <»t1oreni periods. The dominant charactenstc of domorsal spocos associations was Iho absonco of terrÿoral persistence. Only It was possible to find somo partial associations which remain dunng a maximum of two sampling penods: Rhombophles auronibens/Pnacanthus aronatus. Lutjanus analis/Lutjanus synagns y Eucinoslomus argontousAJpeneus parvus It were observed seasonal changos in the set of environmental vanables which bettor explain tho community structure. but depth always appears in tho optimal correlation set. Apparently, species co-existence is rather duo to a common answer to environmental gradients, than to spocios interactions. Nevertheless, the relatively low corrolations seem to indicate that other factors, like migrations for biological reasons. could also affect the structuro and composition of demersal fish associations, on a smaller time scale.


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