Publication Date:
2021-05-19
Description:
Protecting coastal aquaculture systems as a habitat for aquatic systems is one of the serious concerns of the
world. In the present study, spatial and temporal variations of Some physicochemical parameters, nutrient
concentration and water quality In some estuaries of East and West of Hormozgan province were investigated
from March 2015 to February 2016.Data analysis was performed using multivariate statistical methods (such as:
CA,DA and PCA Analysis) and Eutrophication and water quality index using multivariable indices. The average
annual variation of various parameters studied in West Azarbaijan province of Hormozgan is as follows:water
temperature (18.1-34.6Co
), Salinity (35-45.6 ppt), Dissolved Oxygen (4.6-7.4 mg.l), pH (8.01-8.4), Nitrate (32.5-
403.5µmo.l), Nitrite (3.6-50.7 µmo.l), Total Ammonia (9.8-311.2 µmo.l), phosphate (22-569.1.6 µmo.l), and
chlorophyll-a is equal to(0.46-4.04 mg.m3
), respectively.Also, the mean annual variation of the various
parameters studied in the eastern province of Hormozgan has been as follows: water temperature (18.1-34.6Co
),
Salinity (35-45.6 ppt), Dissolved Oxygen (4.6-7.4 mg.l), pH (8.01-8.4), Nitrate (32.5-403.5µmo.l), Nitrite (3.6-
50.7 µmo.l), Total Ammonia (9.8-311.2 µmo.l), phosphate (22-569.1.6 µmo.l), and chlorophyll-a is equal
to(0.46-4.04 mg.m3
), respectively. One-Way Analysis of Variance test showed that the significant for some
differences physicochemical parameters varied seasonally.Discriminant analysis, water quality conditions in
terms of location classified into three groups.The analysis of PCA showed that the amount of nitrate and total
ammonia in the tiba and phosphate in Laft and Kgamir Stricks with two sources (domestic and agricultural
waste) and natural sources, can be considered as the main factors affecting the intensity of Eutrofication.The
range of trophic Trix and TI eutrophication index in the studied areas were 4.3-6.1 and 3.5-4.2
respectively.According to on the indicators of and TI index, trophic status was classified into mesotrophic(in laft
and khamir areas), Oligo-Mezotrophic(Yekshoveh area) and mezo- eutrophic respectively. Also Based on Trix
index, the Water quality status was from bad condition in tiab area and good condition in laft, khamir and
yekshoveh areas respectively. The determination of trophic conditions with a single-variable method based on
chlorophyll a and Total inorganic Dissolved materials(DIN) showed a Very good agreement with multivariate
trophic indices.The range of changes in some of the parameters studied in this study was more than the reported
limit for the conservation of aquatic life in coastal areas.
Description:
Iranian Fisheries Science Research Institute
Description:
Published
Keywords:
Environmental
;
Shrimp
;
Habitats
Repository Name:
AquaDocs
Type:
Report
,
Refereed
Format:
76pp.
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