Algal photo library

Aquatic Botany
Algae Photo Library
Updated: 29 October 2003

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Phytoplankton
	Planktonic trichomes of Anabaena, a common cyanobacterium in the epilimnion of eutrophic Manitoba lakes. (Photo by Gordon Robinson)
	Scum of Euglena sanguinea on a pond in the UK.(Photo from: Canter-Lund,H. and Lund,J.W.G. 1995. Freshwater Algae: Their Microscopic World Explored. Biopress Ltd.)
	Vegetative cell (right) and resting cysts (left) of Euglena sanguinea collected from amongst Scirpus (bulrush) beds at Delta Marsh, Manitoba. (Photo by Gordon Robinson)
	Red surface scum of Euglena sanguinea amongst Scirpus (bulrush) beds at Delta Marsh, Manitoba. The bloom is most red during periods of high light, turning dull green as light intensity decreases. (Photo by Gordon Goldsborough)
	Closeup of a surface scum of Euglena sanguinea in Delta Marsh, Manitoba. The scum was sufficiently cohesive that gas bubbles released below the water surface, seen here, were trapped below the algal layer. (Photo by Gordon Goldsborough)
	Bottle of water, taken from beneath the snow covered ice sheet on a pond in the UK, containing a massive accumulation of Chlamydomonas. (Photo from: Canter-Lund,H. and Lund,J.W.G. 1995. Freshwater Algae: Their Microscopic World Explored. Biopress Ltd.)
	Phytoplankton bloom on the surface of an enclosure in Delta Marsh, Manitoba to which inorganic nitrogen and phosphorus have been added. (Photo by Ken Sandilands)
Epiphyton
	Actively photosynthesizing filaments of Cladophora, the white specks are bubbles of oxygen.(Photo from: Canter-Lund,H. and Lund,J.W.G. 1995. Freshwater Algae: Their Microscopic World Explored. Biopress Ltd.)
	Heterotrichous mass of Coleochaete, a common green alga associated with the epiphyton of eutrophic water bodies. (Photo by Gordon Robinson)
	Scanning electron micrograph of sessile diatoms on the surface of an acrylic rod, the exposed smooth surface of which is visible in the foregound. Note the conspicuous organic film that covers the substratum amongst the diatoms. (Photo by Gordon Goldsborough)
	Scanning electron micrograph of Cocconeis placentula, a common epiphytic diatom. (Photo by Gordon Goldsborough)
	Scanning electron micrograph of sessile diatoms growing on the epidermis of Scirpus (bulrush). (Photo by Gordon Goldsborough)
	Filamentous green algae encrusting a vertically positioned acrylic rod. (Photo by Gordon Robinson)
	Sessile and erect diatoms (mostly Cocconeis placentula) growing as epiphytes on a filamentous green alga. (Photo by Gordon Robinson)
	Macroscopic, gelatinous masses of Rivularia growing on the surface of an acrylic rod in Delta Marsh, Manitoba. These colonies, which contain heterocysts that fix atmospheric nitrogen, typically appear late in the summer, when levels of ambient nitrogen are low. (Photo by Gordon Robinson)
Metaphyton
	Mat of filamentous algae, predominantly Spirogyra on the surface of a pond in the UK.(Photo from: Canter-Lund,H. and Lund,J.W.G. 1995. Freshwater Algae: Their Microscopic World Explored. Biopress Ltd.)
	Response by metaphytic algae to experimental nutrient enrichment in Delta Marsh, Manitoba. The enclosure on the left has received inorganic N and P and its water surface is covered by a thick mat of Enteromorpha intestinalis. The control enclosure on the right has no such mat. (Photo by Gordon Goldsborough)
	Sample of metaphyton (Enteromorpha intestinalis) collected from the water surface of an enclosure in Delta Marsh, Manitoba to which inorganic nitrogen and phosphorus had been added. (Photo by Gordon Goldsborough)
	Profuse metaphytic algae growing amongst submersed macrophytes in Delta Marsh, Manitoba. (Photo by Sharon Gurney)
	Surface mats of the alga Hydrodictyon (water net) in New Zealand can be so abundant that they impede use of lake for water sports and other activities. (Photo by Julie Hall)
Epipelon/plocon
	Crusts of algae (plocon) associated with the surface of exposed sediments in Delta Marsh detach late in the day because of the buoyancy provided by trapped oxygen bubbles (visible here) and float to the water surface. (Photo by Gordon Goldsborough)
	A thin crust of plocon (algal layer on the sediment surface) collected from Delta Marsh, Manitoba. (Photo by Gordon Goldsborough)
Epilithon
	Stigeoclonium growing on a stone.(Photo from: Canter-Lund,H. and Lund,J.W.G. 1995. Freshwater Algae: Their Microscopic World Explored. Biopress Ltd.)
	Epilithic algae growing on rocks in brackish water of the estuary of the Churchill River, Manitoba. (Photo by Gordon Goldsborough)
	Filamentous green algae growing on rocks in the estuary of the Churchill River, Manitoba. (Photo by Gordon Goldsborough)
Terrestrial
	Green algae, predominantly Apatococcus, on wooden fencing in the UK.(Photo from: Canter-Lund,H. and Lund,J.W.G. 1995. Freshwater Algae: Their Microscopic World Explored. Biopress Ltd.)
	Green algae, predominantly Apatococcus, on a rock wall in the UK.(Photo from: Canter-Lund,H. and Lund,J.W.G. 1995. Freshwater Algae: Their Microscopic World Explored. Biopress Ltd.)
	Soil algae, predominantly Chlorophytes and Xanthophytes and seedling garden plants in the UK.(Photo from: Canter-Lund,H. and Lund,J.W.G. 1995. Freshwater Algae: Their Microscopic World Explored. Biopress Ltd.)
	A dry bird bath discolored by cysts of Haematococcus in the UK.(Photo from: Canter-Lund,H. and Lund,J.W.G. 1995. Freshwater Algae: Their Microscopic World Explored. Biopress Ltd.)