239 Bilder zum Thema "biological filtration" bei ClipDealer

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Green algae Lemna and Wolffia covering entire surface of pond water in summer, Ukraine, Odessa
Reeds cast a shadow on a continuous layer of floating algae Lemna and Wolffia on the surface of a eutrophic lake, Ukraine
A continuous layer of floating algae Lemna and Wolffia on the surface of a eutrophic lake, Ukraine
A continuous layer of floating algae Lemna and Wolffia on the surface of a eutrophic lake, Ukraine
A continuous layer of floating algae Lemna and Wolffia on the surface of a eutrophic lake, Ukraine
A pond with floating algae duckweed and lake reed with leaves sticking out of the water, casting shadows on the algae.
The serene landscape depicts a green lake with floating aquatic vegetation from Lemna and Wolffia, surrounded by a variety of trees, shows the beauty of nature and rich ecosystem, a park in Odessa
Man hand putting new aquarium bio filter medium for optimal surface for the setting of the filter bacteria. Fishkeeping concept.
Reflection of trees in the water of a lake with a continuous layer of floating algae Lemna and Wolffia on the surface, Ukraine
Horse chestnut floating in water with on water covered with floating plants in the rich ecosystem of a eutrophic lake in a park in Odessa, Ukraine
A continuous layer of floating algae Lemna and Wolffia on the surface of a eutrophic lake, Ukraine
A small eutrophic lake covered with flowering algae Lemna and Wolffia floating on the water surface, surrounded by trees and shrubs in a park in Odessa, Ukraine
Green algae Lemna and Wolffia covering entire surface of pond water in summer, Ukraine, Odessa
Aquatic plants floating on the surface of the water duckweed Lemna and Wolffia in a stagnant pond, Ukraine
Aquatic plants floating on the surface of the water duckweed Lemna and Wolffia in a stagnant pond, Ukraine
Reeds cast a shadow on a continuous layer of floating algae Lemna and Wolffia on the surface of a eutrophic lake, Ukraine
Aquatic plants floating on the surface of the water duckweed Lemna and Wolffia in a stagnant pond, Ukraine
Dry driftwood in the Pond with floating algae Duckweed and Wolffia sp. covering the water surface
A continuous layer of floating algae Lemna and Wolffia on the surface of a eutrophic lake, Ukraine
A dry yellow leaf floats on water covered with floating plants in the rich ecosystem of a eutrophic lake in a park in Odessa, Ukraine
A dry yellow leaf floats on water covered with floating plants in the rich ecosystem of a eutrophic lake in a park in Odessa, Ukraine
Picturesque eutrophic pond covered with green Duckweed and Wolfia algae, surrounded by lush plants and an old building that evokes tranquility.
Aquatic plant in a lake, the surface of the water in which is covered with green Duckweed and Wolffia algae, Odessa park
The serene landscape depicts a green lake with floating aquatic vegetation from Lemna and Wolffia, surrounded by a variety of trees, shows the beauty of nature and rich ecosystem, a park in Odessa
The serene landscape depicts a green lake with floating aquatic vegetation from Lemna and Wolffia, surrounded by a variety of trees, shows the beauty of nature and rich ecosystem, a park in Odessa
Reflection of trees in the water of a lake with a continuous layer of floating algae Lemna and Wolffia on the surface, Ukraine
A small eutrophic lake covered with flowering algae Lemna and Wolffia floating on the water surface, surrounded by trees and shrubs in a park in Odessa, Ukraine
A continuous layer of floating algae Lemna and Wolffia on the surface of a eutrophic lake, Ukraine
Aquatic plants floating on the surface of the water duckweed Lemna and Wolffia in a stagnant pond, Ukraine
A dry yellow leaf floats on water covered with floating plants in the rich ecosystem of a eutrophic lake in a park in Odessa, Ukraine
The serene landscape depicts a green lake with floating aquatic vegetation from Lemna and Wolffia, surrounded by a variety of trees, shows the beauty of nature and rich ecosystem, a park in Odessa
Shadow of a tree in the water of a lake with floating on the surface layer of algae Duck grass and Wolffia, a park in Odessa
A continuous layer of floating algae Lemna and Wolffia on the surface of a eutrophic lake, Ukraine
The serene landscape depicts a green lake with floating aquatic vegetation from Lemna and Wolffia, surrounded by a variety of trees, shows the beauty of nature and rich ecosystem, a park in Odessa
A pond with floating algae duckweed and reeds with leaves lying on the surface of the water, a natural setting
Aquatic plant in a lake, the surface of the water in which is covered with green Duckweed and Wolffia algae, Odessa park
The serene landscape depicts a green lake with floating aquatic vegetation from Lemna and Wolffia, surrounded by a variety of trees, shows the beauty of nature and rich ecosystem, a park in Odessa
Reeds cast a shadow on a continuous layer of floating algae Lemna and Wolffia on the surface of a eutrophic lake, Ukraine
Aquatic plants floating on the surface of the water duckweed Lemna and Wolffia in a stagnant pond, Ukraine
Picturesque eutrophic pond covered with green Duckweed and Wolfia algae, surrounded by lush plants and an old building that evokes tranquility.
Picturesque eutrophic pond covered with green Duckweed and Wolfia algae, surrounded by lush plants and an old building that evokes tranquility.
Aquatic plants floating on the surface of the water duckweed Lemna and Wolffia in a stagnant pond, Ukraine
Aquatic plants floating on the surface of the water duckweed Lemna and Wolffia in a stagnant pond, Ukraine
Green algae Lemna and Wolffia covering entire surface of pond water in summer, Ukraine, Odessa
Aquatic plants floating on the surface of the water duckweed Lemna and Wolffia in a stagnant pond, Ukraine
Aquatic plants floating on the surface of the water duckweed Lemna and Wolffia in a stagnant pond, Ukraine
Picturesque eutrophic pond covered with green Duckweed and Wolfia algae, surrounded by lush plants and an old building that evokes tranquility.
A dry yellow leaf floats on water covered with floating plants in the rich ecosystem of a eutrophic lake in a park in Odessa, Ukraine
Horse chestnut floating in water with on water covered with floating plants in the rich ecosystem of a eutrophic lake in a park in Odessa, Ukraine
The serene landscape depicts a green lake with floating aquatic vegetation from Lemna and Wolffia, surrounded by a variety of trees, shows the beauty of nature and rich ecosystem, a park in Odessa

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