|
Study on species composition and population structure of zooplankton at different depths of the southern Caspian Sea (commercial regions: Amirabad, Nowshar and Anzali) after Mnemiopsisleidyi invasion in 2010
|
Khodaparast Noorbakhsh   , Abolghasem Rouhi , Maryam Shapouri , Mojgan Roushantabari , Rahimeh Rahmati , Hasan Nasrollahzadeh Saravi , Fariba Vahedi |
|
|
|
Abstract: (48923 Views) |
| In this study, investigation was conducted to determine the seasonal species composition and structure of zooplankton population of Caspian Sea at three commercial regions, Amirabad, Nowshar and Anzali harbors in 2010. According to the results a total of 24 species was found to build zooplankton populations. These zooplanktons were include of copepods (4 species), Cladocera (7 species), Rotatoria (9 species), protozoa (2 species) and 2 temporary plankton species (Meroplankton). Maximum species abundance of zooplankton species was recorded in autumn and Winter (21 species) and lowest in summer (15 species). The study showed that the average annual population density and biomass of zooplankton were 3848 ± 1114 /m3 and 35.1±9.6 mg/m3 respectively. Maximum average of annual zooplankton abundance and biomass were belonged to copepods with 3085±810/m3 and 23.9±5.7 mg/m3. Quarterly seasonal review (temporal distribution) of zooplankton abundance and biomass showed that was more in the summer with an average density of 4390 ± 1230 /m3 and 48.9±15.9 mg/m3 in winter, respectively. The aim of this study was to assess the zooplankton population in Anzali, Nowshar and Amirabad harbors which showed the highest density and biomass of zooplankton in Anzali region with 5789±1352 /m3 and 44.7 ± 11.1 mg/m3 respectively and the lowest was in Noshahr with 3142±658/m3 and 32.2±8.0 mg/m3 respectively. |
|
| Keywords: Caspian Sea, zooplankton, Species composition, Abundance, Biomass |
|
|
Full-Text [PDF 719 kb]
(2540 Downloads)
|
Type of Study: Research |
Subject:
Special
Received: 2014/01/21 | Accepted: 2014/01/21 | Published: 2014/01/21
|
|
|
|
|
|
|
| Send email to the article author |
|
|
|
| Add your comments about this article |
|
|
|
