Accumulation of heavy metals in Typha angustifolia (L.) and Potamogeton pectinatus (L.) living in Sultan Marsh (Kayseri, Turkey)
Introduction
The distribution and behaviour of many aquatic macrophytes are often correlated with water quality (Agami et al., 1976; Romero and Onaindia, 1995). Detecting environmental pollution by using biological materials as indicators is a cheap, reliable and simple alternative to the conventional sampling methods (Zurayk et al., 2001). A number of organisms such as mosses and periphyton, fish and vascular plants has been successfully used (Porvari, 1995).
Aquatic macrophytes may accumulate considerable amounts of heavy metals in their tissues (Kovács et al., 1984). Therefore, aquatic macrophytes were thus proposed as pollution-monitoring organisms (Greger and Kautsky, 1993; Zhulidov, 1996; Shine et al., 1998). Metal bioaccumulation depends upon numerous biotic and abiotic factors, such as temperature, pH and dissolved ions in water (Lewander et al., 1996; Demirezen, 2002).
Pesticides and fertilizers used in agricultural fields have been affecting the Marsh and its plant community. Knowledge of heavy metal concentrations in the environment near a Sultan Marsh is of great concern due to their serious effects on food chain and furthermore on animal and human health. This reedfield has been taken under protection through the International Ramsar Treaty. In this area, both fresh and salty water ecosystems coexist providing shelter for 426 bird species (Çevko, 1998). As it is on the migration route of birds and rich flora and fauna, it is contributing much to the tourism of Kayseri and environments.
Uptake and accumulation of elements by plants may follow two different paths, i.e., the root system and the foliar surface (Sawidis et al., 2001). Plant species have variety of capacity in removing and accumulating heavy metals. There are reports indicating that some species may accumulate specific heavy metals, such as the Spirodela polyrhiza for Zn (Markert, 1993).
In this study, two aquatic macrophytes Typha angustifolia and P. pectinatus and corresponding water and sediment samples were collected from Sultan Marsh and analysed for their heavy metal contents (Cd, Pb, Ni, Cr, Zn and Cu) in order to ascertain their indicator value and degree of contamination.
Section snippets
Description of study areas
The reedfield Sultan Marsh is located at the lowest part of the Develi plain and in the Yahyalı, the Develi and the Yeşilhisar triangle, of having a Mediterranean type of climate. This reedfield is situated in Central Anatolia (38°22′30″ latitude and 38°15′00″ longitude). In this study, 13 stations were selected in the Marsh (Fig. 1). Samples of plants, sediments and water were collected during June 2001–May 2002. The cattail (T. angustifolia) is dominant macrophyte species in the area.
Results and discussion
This study shows that aquatic macrophytes and sediments can well present further information about the metal content of their aquatic environment. Plant and sediment analyses revealed that the accumulation is considerably the consequence of a kind of elements (Demirezen, 2002).
Cadmium is a toxic element and exists along with Zn in nature. The most important sources that cause Cd pollution are metal industry, plastics, mailing home tools, fossil fuels of vehicles and sewers.
Mean Cd
Conclusion
- (1)
Water, sediment and plants in Sultan Marsh and its environs are mainly polluted with Pb, Cd and Cr.
- (2)
A positive correlation was found out between concentrations of Pb, Cd and Cr in plants and these heavy metals in their environment.
- (3)
The results prove that leaves of T. angustifolia are less suitable for metal accumulation than roots. The probable reason for this is their short life.
- (4)
Cd, Zn and Ni are accumulated by plants in the Sultan Marsh at a higher rate from the sediments.
Acknowledgements
This work was realized thanks to the financial support of the DPT (T.R. Prime Ministry, The State Planning Organization).
References (40)
- et al.
The effects of various components of water pollution on the behavior of some aquatic macrophytes of the coastal rivers of Israel
Aquat. Bot.
(1976) - et al.
Capsella bursa-pastoris (L.) Medic.as a biomonitor of heavy metals
Sci. Total Environ.
(1999) - et al.
Use of macrophytes for mapping bioavailable heavy metals in shallow coastal areas
Appl. Geochem.
(1993) The role of heavy metals and toxic materials in the physiological ecology of submerged macrophytes
Aquat. Bot.
(1991)- et al.
Macrophytes as indicators of bioavailable Cd, Pb and Zn flow in the river Przemsza, Katowice Region
Appl. Geochem.
(1996) - et al.
Ecotoxicological hazard and risk assessment of heavy metal content in agricultural soils of Central Germany
Ecotox. Environ. Safety
(1999) Mercury levels of fish in Tucurui hydroelectric reservoir and in river Moju in Amazonia, in the state of Para, Brazil
Sci. Total Environ.
(1995)- et al.
A study of metal distribution from lignite fuels using trees as biological monitors
Ecotoxicol. Environ. Safety
(2001) - Aksoy, A., Duman, F., Demirezen, D., 2000. Atmosferdeki ağır metallerin tutulmasında bitki tüylerinin rolü ve ağır...
Analysis of Ecological Materials
(1989)
Cattail (Typha spp.) management
Natural Areas J.
Trace Elements in Soils
Flora Nainitalenses
The movement of copper, molybdenum and selenium in soils as indicated by radioactive isotopes
Aust. J. Agri. Res.
Seedling recruitment of 11 wetland plant species along a water level gradient: shared or distinct responses?
Can. J. Bot.
Lead: understanding the minimal toxicity of lead in plants
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