Investigation on abundance, distribution, diversity and biomass of macrobenthos in Oman sea waters

Oman sea is an important aquatic part of south-east part of iran that lies from 27°N(Hormoz strait) until 25° 45′N (Gwatar Gulf) that is next to two Southern Province ,Hormozgan ann Sistan-o- baloochestan. Sampling was carried out from march 2007 and 2008 to September 2007 and 2008 in two period of time postmonsoon and premonsoon . A total 24 station on 10 transect 4 stations were on each transect 1 and 2 with 10 miles far from each other and for the others 2 stations were on each transect. A 0.1 m^2 VAN – VEEN GRAB was used for sediment sampling and a CTD was used to record physical data of water column. Macrobenthos frequency data and biodiversity indices were used to determine of density and biodiversity of macrobenthos respectively. Wet weight was used to determine wet biomass of macronenthos. Among benthic invertebrate polychaete with average 800 ind^-2 and then amphipods and gastropods were the most abundance. Yearly density of macrobenthos showed polychaete with the average of 500 ind^-2 in 2007 and 1000 ind^-2 in 2009 was the most abundance. Macrobenthos density in postmonsoon was more than premonsoon p<0.05. An increasing and decreasing in density and biodiversity was obtain from coast to depth respectively p<0.05. There was no significant different between macrobenthos density from Hormoz strait to Golf of Guiter p>0.05. There was a negative regression between macrobentos density and depth (p<0.05) and positive rsgresion between macrobenthos and oxygen concentration and temperature (p<0.05). There was also a significant relationship between macrobenthos, coppepda and polychaete density with organic carbon p<0.05. Bimass changed from strait to Golf and coast to depth increasingly p<0.05.

Bibliographic Details

Main Authors:	Ejlali Khanghah, Keivan, Aghajari, Shiva, Sanjarani, Maliheh
Format:	monograph biblioteca
Language:	Persian
Published:	Iranian Fisheries Science Research Institute 2014
Subjects:	Ecology, Macrobenthos, Biodiversity, Abundance, Distribution, Diversity, Biomass, Aquatic, Sampling, Polychaete,
Online Access:	http://hdl.handle.net/1834/39926
Tags:	Add Tag No Tags, Be the first to tag this record!