Effectss of Sediment Pollution on Marine Biology


This research was concentrated on the effects of sediment pollution on marine beings. Mussels were chosen for biomonitoring and their filtration rate was chosen as the bioindicator. Sediment samples were taken from two different parts in Istanbul which are shipyard countries. Mussels were obtained from a comperatively cleansing agent part and cleansed by accommodating them to an optimal environment for long plenty. Sea H2O was taken from the same part and filtered to extinguish foreign stuffs. Groups were formed with deposit in fish tank to measure toxic check. Filtration rate measurments were made for a control group without deposit and two groups with deposits in their home ground. Data showed that control group mussels had manner higher filtration rate so sediment groups. Consequences suggested that contaminated sediment leads to major critical dysfunctions onMytilus galloprovincialisby crucially diminishing it’s filtration rate.

1. Introduction

Throughout the evoloution of human sort, our interaction with the environment changed dramatically by the technological advancement made. Effectss of industrial activities without proper planning and ordinances lead to mass devolution and taint of environmental systems. Transformation and transit of natural resources to unintended ecosystems lead to dysfunction of rhythms, therefore negatively intefering with the ecosystems and one of the most affected population is the marine life. In a universe which is covered by oceans with an undeniable per centum of % 71 [ 1 ] , it is more than expected to cover with such consequence. Since the earliest times, every other civilisation searched for H2O, built their life around it and traveled by it. Unfortunately the beginning of life is non nurtured as it should’ve been done, but merely got contaminated and harmed more. Give the state of affairs of our Marine ecosystems acquire polluted more and more every twenty-four hours, it is a necessity to supervise the effects of state of affairs on marine life.

Coastal zones ; which holds the belongings of being the most disturbed countries since the industrial activities such as shipbuilding take topographic point merely at that place, and besides a batch of waste is discharged by families and/or mills through seashores. This brings the importance of apprehension and analyzing issues caused by these activities sing the marine life and its sustainablity. In this survey ; interactions between different deposit samples from Istabul and mussels is observed in an extremely controlled environment to find the effects of taint.

1.1 Purpose of Project

This research is concentrated on finding the effects of pollutants in deposit to the critical maps of Marine animate beings by the biomonitoring of mussels (Mytilus galloprovencialis) which are botth sampled along the Istanbul Strait. All consequences were compared sing the sampling media, trying period/time, vicinities, beginnings and pollutant degrees.

1.2 Sediment

Sediment is a formation of bedraggled suspended stuff which varies from 1µm to 256mm in size [ 2 ] . Sediment bed carries great importance for the Marine ecosystems since it is a beginning of food and home ground which is called benthal zoology. It is the place and nutrient provider of marine animate beings such as sponges, coelenterates, polychaets, mollusk, crustaceans and echinoderms.

1.2.1 Deposit

Erosion of land surfaces and Bankss leads to transit of organic affair and mineral to H2O organic structures by overflow. The term organic affair includes leaf rubble in different compositons so as it contains acids, pigments and even micro-organisms. Beside the organic affair ; Ca carbonate, Fe minerals, aluminosillicates and clay minerals form the inorganic portion [ 3 ] . Due to high flow, carried atoms remain on surface –suspended- most of the clip. When low flow replaces high flow, gravitative forces kick in and get down the subsiding. This whole procedure is the chief part to the formation of bed deposits but non all. Solids produced by geochemical and biological procedures besides may compose deposit.

1.2.2 Pollutants in Sediments

During the deposit procedure, natural stuffs are non the lone affair to be carried from land. Anthropogenetic merchandises may interfere with the overflow hence going the unintended portion of the bed deposit. Plastic and soot get inclded in the equation from urbanization beside the manure and artifical fertilisers from agricultutal activities. These stuffs are considered as pollutants but non he merely 1s. There is besides a concern with hint anthropogenetic taint by metals from excavation and urban beginnings, radionuclides from atomic fuel reprocessing, organotin anti-fouling agents from the transportation industry, and organic compounds, including polychlorinated biphenyls one time used in transformer oil, polyaromatic hydrocarbons from burning procedures, pesticides washed from agricultural land, aqueous film-forming agents, fire retardents, and steroid endocrines, pharmaceuticals and personal attention merchandises present in wastewater from sewerage intervention workss [ 3 ] .

1.2.3 Effectss of Sediment Pollutants to Marine Organisms

Pollutants in deposits extremely effects the homeostais of beings and leads to devolution and dysfunction of biosystems. Major responses due to this interaction are assorted map oxygenases activity, immunosuppresion and genotoxicity.

Agents in contaminated deposit interferes with the Deoxyribonucleic acid doing it harm. Different organisation degrees of biosystems gives different responses to distortion of DNS hence making the undermentioned effects in Table 1.2.3

Degree of biological organisation


Deoxyribonucleic acid



-Cell Death

-Disordered proliferation and distinction

-Neoplastic transfromation


-Functional Defects




-Reduced Viability

-Reduced Birthrate


-Reduction of population size



-Reduction of species diverseness

Table 1.2.3 Consequences of DNA Damage on differen organisational degrees of biological systems

Deoxyribonucleic acid harm is non the lone effect of toxic stuff in deposit. Organophophates and carbamates takes the toxic action of enzymatic suppression toward beings. Accretion of these pollutants at the nervus terminations leads to steel dysfunctions [ 4 ] . Nerve disfuntions disrupts the the being which may make to fatal degrees. Effectss and dislocation of these pollutants on a flatfish are shown in Figure 3.1. to show the rhythm through the organic structure.

Figure 1.2.3 Responses by the in biological system and the genotoxic harm end-points Le. AChE = acetylcholinesterase suppression, MFO = assorted map oxygenases activity ( detoxification ) , DNA harm

1.3 Biomonitoring

Biomonitoring is a method that uses biological responses of beings to measure the quality alterations in an environment. Programs of biomonitoring can be qualitative, semi-quantitative or quantitative [ 5 ] . Particular indexs are used to find the quality of the ecosystems by biomonitoring.

1.3.1 Bioindicators

Bioindicators are the responses of beings against chemical agents. Responses vary through all beings but they can be grouped under 4 chief rubrics as [ 7 ] ;

  • Biochenical responses ( Enzymatic initiation )
  • Cellular responses ( Stability )
  • Physilogical responses ( Egg shell acquiring dilutant )
  • Functional responses ( Fertility upset )

Apart from all these, bioindicators must run into some standards to be used for biomonitoring. These standards can be classified as follows [ 6 ] ;

  • Trustworthy
  • Comperatively low-cost
  • Easy to use
  • Measurments should give consequences at noticable degrees
  • Environmental factors and their effects on bioindicators must be determined
  • Sensitive plenty to be an early diagnosing and bar tool for taint

Different Marine beings are used as bioindicators such as microalgae and mussels. Microalgae have gained attending in the recent old ages due to several grounds because of their greater sensitiveness to pollutants than many other beings. In add-on they occur copiously in nature, they are an indispensable constituent in really many nutrient webs, they are easy to civilization and to utilize in checks and there are few if any ethical issues involved in their usage [ 7 ] .

1.3.2 Biomonitoring with Mussels

There are several advantages of utilizing mussels for biomonitoring. Following belongingss can number as grounds to prefer mussles for biomonitoring [ 8 ] ;

  • Mussels are dominant species throughout the coastal countries
  • Easy to obtain
  • Limited or no traveling capablenesss therefore ensuing of being an index for local environmental state of affairs
  • Comperatively high opposition for environmental and chemical emphasis factors
  • Live on filtration of suspended affair ( about 1,5 litres per hr ) , taking to easy observation of hint stuff in H2O
  • Enzymatic activity is low compared to fishes so pollutants are non easy metabolised Bioindicators of Mussels

There are different responses of mussels that can be used as bioindicators. Shell and tissue growing, oxygen/nitrogen ratio, cellular distortion and functional alterations are the major 1s. We dedicated to detect the alteration in the filtration rate which autumn under the functinal response class.


To detect the effects of different deposit in the ecosystem to the critical maps of mussels ( mytilus galloprovincialis ) , which is an of import member of marine ecosystem ; an experiment was planned and executed by me YiAYit OZER as the learner of Atilla YILMAZ, under the direction and way of Prof. Dr. Oya OKAY. This experiment targeted to find the effects of deposit samples from different sites of Turkey to the filtration velocity of mussels, therefore correlating the consequences with the critical functionality and interaction with the deposit.

2.1 Sampling and Preperation

2.1.1 Water

Tarabya part was selected to obtain the needful sea H2O which will be used for ; a liveable environment for stray mussels to stay healthy and alive, algae civilizations to dwell in erlenmayer flascs and filtration velocity measurings. After adequate H2O was collected for the title, a particular mechanism in our labratory was used to filtrate that H2O to extinguish macroparticles.

2 litres per flasc-full, H2O filtered from GFC filter was stored to be filtered once more. This clip, H2O was filtered once more with a hand-made peripheral. This periheral filters the once GFC filtered H2O by running it through active C to extinguish the pollutants and any other foreing object. GFC and active C filtered H2O was stored in the changeless temperature room without visible radiation to forestall any biological activity. All these filtration was used to forestall any unintended consequence on mussels and to obtain dependable atom counts while mensurating filtration velocity.

2.1.2 Algae

Algae is important for the experiment since they are the chief nutrition for the mussels and they comprise the atoms counted for the filtration velocity measuring. Fixing a F/2 medium, a liveable environment was created for the algea. Then seting a former algea civilization into those erlenmayer flasks, a new civilization was obtained.

Newly planted algea populations were so stored in the changeless temperature suites with constan and eqaul ligthing to advance reproduction, therefore taking to healthy, populated algae civilizations. Erlenmayer flasks were stirred every twenty-four hours to forestall suspension.

2.1.3 Mussels

Rumeli KavaAYA± part was selected to obtain the mussels ( mytilus galloprovincialis ) , which was our focussed portion of the experiment. Healthy specimens were selected by manus which are between 4 and 6 centimeter long. Obtained mussels were kept in the sea H2O of the same part till they reach the labratory and adapt to the environment to forestall any dazes. Surfaces of the mussels were cleaned to forestall any unintended consequence which may happen. Byssuss were carefully trimmed from the outer terminal. Wide fish tanks were filled with the filtered H2O to make the appropriate environmen for the mussels. Fully cleaned mussels were put in to those fish tanks without stacking them to supply free infinite. Aquariums were placed in to the changeless temprerature room. Pumps with air rocks attached on the terminal were used to rhythm the air through fish tank H2O which will supply O for mussels. Water of these fish tanks were to the full changed and algae were given to the mussels as nutrition every twenty-four hours. Minimum a hebdomad was given for mussles to to the full accommodate to the environment.

2.1.4 Sediments

Samples from A°zmit and Tuzla were stored in a deep deep-freeze to keep their unity. Main ground these topographic point were chosen for sampling was that to detect the taint caused by shipyards since these two parts are extremely active in ship building activities.

2.2 Laboratory Work

2.2.1 Toxicity Assay

Glass fish tanks were specially obtained for this experiment. After proper cleansing of the fish tanks, 500ml of deposit and 2 liters of filtered H2O were put in. Puting these fish tanks in the changeless tepreature room, 10 to 14 mussels were planted in. Besides the two fish tanks with the deposit, a seperated fish tank with merely 2.5 litres of H2O was prepared to be a control group. All these fish tanks were rested for 5 yearss for the mussels to to the full interact with the deposit. Algae were fed to those fish tanks daily with a concentration of 20000 cells per milliliter, which was determined by atom counter. Pumps with air rocks attached to their terminals were used to supply O. Aquarium were stirred daily to keep homogenouity.

2.2.2 Filtration Rate

10 2L beakers were filled with filtered H2O. Then beakers were placed on magnetic scaremongers with magnetic sticks in them. Afterwards, 10 mussels chosen from one fish tank were placed into each beaker seperately ( Away from magnetic sticks, near the beaker wall and in a place where it will easy blush ) . Magnetic scaremongers got started and stirred the H2O for at least 20 proceedingss. For following measure, algae were introduced to beakers with an exact measure of 24000 cells which was determined by atom counter. After a 5 miunte waiting period, 10 milliliter of sample Washington extracted from every beaker to single glass tubings. From this point, samples were taken every 20 proceedingss for 3 times. Particle numeration was made for every glass tubing to find the algae concentration alteration in beakers relative to clip. Consequences were celebrated [ 9 ] . Calculation

Following equations were used to cipher the filtrartion rate ;

Filtration Rate =

( C0and CTare the algea counts betwwen a clip interval. )


3.1 Consequences

3.1.1 Control

Table 3.1.1a Atom counts

Table 3.1.1b Filtrarion Rate

Figure 3.1.1 Filtration Rate Relative to Clock

3.1.2 A°zmit

Table 3.1.2a Atom counts

Table 3.1.2b Filtrarion Rate

Figure 3.1.2 Filtration Rate Relative to Clock

3.1.3 Tuzla

Table 3.1.3a Atom counts

Table 3.1.3b Filtrarion Rate

Figure 3.1.3 Filtration Rate Relative to Clock

3.1.4 Comparison

Figure 3.1.4 Filtration Rate Relative to Clock

3.2 Discussion

After all measurings and computations were done, info at given charts was obtained. It clearly shows that short to mid termexposure to sediment crucially effects filtration rate of mussels in negative manner. While average filtration rate of the control group ( which has no deposit in it ) is about 3 liter per hr, A°zmit and Tuzla groups remain manner below 1 litre per hr.

Beside the filtration rate, toxic substances in deposits lead to mussel deceases in both groups before even the measurings can be done. This makes it safe to state that deposit in those part has an inhibiting and interrupting consequence on mussel livability.

Known that the mussels has been obtained from the same topographic point and clip ; besides made to accommodate to the same environment for adequate clip, there should be no uncertainty that these informations is safe to compare.


In this survey ; sediment samples from parts of Istanbul which are industrally active are taken to be experimented on. Water and healthy mussels from a comperatively cleaner part were obtained. By filtrating and maintaining it off-light, any foreign stuff that can consequence the measurings were eliminated from the sea H2O. Same fortunes were simulated for all mussels to keep functional equality. A atom counter and pipettes were used when covering with algae to supply precise computations. Filtration rate of different mussel groups were calculated by mensurating the algea count in prepared beakers relative to clip.

Exposure to sediment lead to deceases and really low filtratiron rates. Since the parts where the deposit samples were obtained are chief shipyard countries of A°stanbul, it was expected to be extremely contaminated hence toxic check is in high degree.Mytilus Galloprovincialisgets the foods in H2O by filtering the H2O ( blushing ) . Presence of contaminated deposit in the home ground leads to critical dysfunctions ( low filtrartion rate ) , even decease.

For farther resarches, a new parametric quantity can be set to find the verve of groups. Alternatively of extinguishing the dead mussels from the equation, they can be included as a mark of negative influence by a new degree of bioindicator. Besides chemical analysis can be done to hold a deeper sentiment on which toxic substance effects the filtration rate more. Finally, increasing the figure of beakers and algae counts may better the truth of this biomonitoring experiment.


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4. Jafa, M. ( 2012 ) .Sediments and toxic substances. [ S.l. ] : Springer.

5. Phillips, D. , & A ; Rainbow, P. ( 1993 ) .Biomonitoring of hint aquatic contaminations. London: Elsevier Applied Science.

6. Markert, B. , Breure, A. , & A ; Zechmeister, H. ( 2003 ) .Bioindicators & A ; biomonitors. Dutch capital: Elsevier.

7. Jeffrey, D. , & A ; Madden, B. ( 1991 ) .Bioindicators and environmental direction. Academic Press.

8. Paoletti, M. ( 1999 ) .Invertebrate biodiversity as bioindicators of sustainable landscapes. Dutch capital: Elsevier.

9. Bayne, B. ( 1985 ) .The Effects of emphasis and pollution on Marine animate beings. New York: Praeger.

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