Desmarestia viridis

Desmarestia viridis is a species of brown algae found worldwide. Its common names include stringy acid kelp, green acid kelp, Desmarest's green weed, and sea sorrel, though the last name can refer to other species of Desmarestia.[1][2] The light brown thallus is delicate with a disc-shaped holdfast. It releases sulfuric acid when damaged, destroying itself and nearby seaweeds in the process. They are found in shallow intertidal areas.[3][4][5]

Desmarestia viridis
Scientific classification
Clade: SAR
Phylum: Ochrophyta
Class: Phaeophyceae
Order: Desmarestiales
Family: Desmarestiaceae
Genus: Desmarestia
Species:
D. viridis
Binomial name
Desmarestia viridis
Synonyms

Description

This brown marine algae grows solitary to 2 m long. It is densely branched. The branches are terete and grow from a bulbous holdfast. The main axis is distinct and grows is 1 mm wide, the final branches fine and hair-like.[6]

Reproduction

Sporangia are produced scattered on the surface of the frond, they are a little larger and darker than the vegetative cells surrounding it.[6]

Habitat

D. viridis is generally epilithic in shaded places in the lower littoral.[6]

Distribution

Common around Ireland, Great Britain and the Isle of Man.[6][7]

Photos
  • Sketch drawing of Desmarestia Viridis
  • Drawings of Desmarestia Viridis Nordhausen :Gedruckt auf kosten des verfassers (in commission bei W. Köhne),1845-71.
  • Desmarestia viridis (O.F.Müller) J.V.LamourouxSpecimen o top left corner of sheet, Ex Herb W. R. Taylor Collected and Pressed
  • Phycotheca Boreali-Americana, a collection of dried specimens of the Algae of North America
  • Collected and pressed samples 1965
  • Collected and pressed sample 1977
  • Collected and pressed sample 1972

References
  1. Dickinson, Carola I. (1963). British Seaweeds. Kew series. 3. London: Eyre & Spottiswoode. p. 76. OCLC 1437555. Retrieved 13 December 2017.
  2. M.D. Guiry. "Desmarestia viridis (O.F.Müller) J.V.Lamouroux". AlgaeBase. Retrieved 13 December 2017.
  3. M.D. Guiry (2011). Guiry MD, Guiry GM (eds.). "Desmarestia viridis (O.F.Müller) J.V.Lamouroux, 1813". AlgaeBase. National University of Ireland, Galway. World Register of Marine Species. Retrieved February 6, 2012.
  4. "Desmarestia viridis". Seaweeds of Alaska, RCAC. Retrieved February 6, 2012.
  5. Fletcher, R.L.1987. Seaweeds of the British Isles. Volume 3 Fucophyceae (Phaeophyceae). Part 1. British Museum (Natural History) ISBN 0-565-00992-3
  6. Hardy, F.G. and Guiry, M.D. 2003. A Check-list and Atlas of the Seaweeds of Britain and Ireland. The British Phycological Society ISBN 0-9527115-16

Further reading
  • Blain, Caitlin; Gagnon, Patrick (February 2013). "Interactions between thermal and wave environments mediate intracellular acidity (H2SO4), growth, and mortality in the annual brown seaweed Desmarestia viridis". Journal of Experimental Marine Biology and Ecology. 440: 176–184. doi:10.1016/j.jembe.2012.12.013.
  • Molis, Markus; Wessels, Hendrik; Hagen, Wilhelm (January 2009). "Do sulphuric acid and the brown alga Desmarestia viridis support community structure in Arctic kelp patches by altering grazing impact, distribution patterns, and behaviour of sea urchins?". Polar Biology. 32 (1): 71–82. doi:10.1007/s00300-008-0504-2.
  • Adey, Walter; Hayek, Lee-Ann C (2011). "Elucidating Marine Biogeography with Macrophytes: Quantitative Analysis of the North Atlantic Supports the Thermogeographic Model and Demonstrates a Distinct Subarctic Region in the Northwestern Atlantic". Northeastern Naturalist. 18: 9. doi:10.1656/045.018.m801.


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.