Publication Date:
2021-05-19
Description:
Oneof the alien speciesinthe southern coast ofthe Caspian Sea which is growing in the recent
decade is Mytilaster lineatus bivalve. The aim ofthisstudy was to determinethe
number of the biomasses, cover percentage, and evaluating the environmental factors affecti
ng the distribution of this bivalveindifferent regions of the rocky shores of southern Caspian
Sea basin.10 stationson the natural and artificial rocky shores were selected (from Astara to
Babolsar), and using a Quadrat15 × 15, the samplingwas implemented randomly
with3replications, within a year, monthlyfrom March 2013 to February 2014. The average
number ofpeoplein the quadrates was determined as 381.9, cover percentage 32.6,
andbiomassperquadrat area unit 32 g.Averagewater temperature was measured as 16.48° C,
salinity 9.87ppm, pH8.27, dissolved oxygen 9.89 mg/L , thewater-conductivity 16.52 m/s,
chlorophyll a 5.7 ± 2.96, andalgalcover percentage 37.76 ± 17.232.The resultsshowed that the
number of biomasses,and the cover percentage of bivalves in the stations3, 4and5 had a
significant difference in comparison with the otherstations, moreover, the station4had
achieved the highest annual crowd of bivalves with an average number of 1373.7, cover
percentage of 90.00 %, and133grams ofbiomassper unit area. According to the PCAtest, the
most important factors influencing thenumber,cover percentage and biomass of these spices
were determined as salinity, water temperature, the amount of chlorophylla, and alga lover,
respectively.
Description:
Published
Keywords:
Invasive species
;
Environmental factors
;
Rockyshores
;
Mytilaster lineatus
;
Biomass
;
Distribution
Repository Name:
AquaDocs
Type:
Journal Contribution
,
Refereed
Format:
pp.93-102
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