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Drivers of colonization and succession in polar benthic macro- and microalgal communities
Inst Antartico Argentino, Dept Ciencias del Mar, Buenos Aires, DF, Argentina.;Consejo Nacl Invest Cient & Tecn, RA-1033 Buenos Aires, DF, Argentina.;Univ Nacl Lujan, Dept Ciencias Basicas PIEA, Buenos Aires, DF, Argentina..
Alfred Wegener Inst Polar & Marine Res, Dept Seaweed Biol, Sect Funct Ecol, D-27570 Bremerhaven, Germany..
Alfred Wegener Inst Polar & Marine Res, Dept Seaweed Biol, Sect Funct Ecol, D-27570 Bremerhaven, Germany.;Leibniz Ctr Trop Marine Ecol, D-28359 Bremen, Germany.;Bremen Int Grad Sch Marine Sci, Bremen Int Grad Sch Marine Sci Global Change Mari, D-28359 Bremen, Germany..
Alfred Wegener Inst Polar & Marine Res, Marine Stn, Dept Seaweed Biol, Sect Funct Ecol, D-27498 Helgoland, Germany..
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2009 (English)In: Botanica Marina, ISSN 0006-8055, E-ISSN 1437-4323, Vol. 52, no 6, 655-667 p.Article, review/survey (Refereed) Published
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Abstract [en]

Information on succession in marine benthic primary producers in polar regions is very scarce, particularly with regard to effects of abiotic and biotic drivers of community structure. Primary succession begins with rapid colonizers, such as diatoms and ephemeral macroalgae, whereas slow, highly seasonal recruitment and growth are characteristic of annual or perennial seaweed species. Colonization of intertidal and subtidal assemblages on polar rocky shores is severely affected by physical disturbance and by seasonal changes in abiotic conditions. Biotic factors, such as grazing, can strongly affect colonization patterns and also alter competitive interactions among benthic algae. Ambient UV radiation affects the diversity of macroalgal communities during early and later stages of succession. In contrast, microalgal assemblages have high tolerance to UV stress. Climate warming could alter algal latitudinal distribution and favor invasion of polar regions by cold-temperate species. Reduced sea ice cover and retreating glaciers could expand colonization areas but alter light, salinity, sedimentation and disturbance processes. Although the key role of macroalgae in coastal systems and, to a much reduced extent, the importance of microphytobenthos have been documented for polar regions, information on the successional process is incomplete and will benefit from further ecological studies.

Place, publisher, year, edition, pages
2009. Vol. 52, no 6, 655-667 p.
Keyword [en]
Antarctica, Arctic, global change, microphytobenthos, seaweeds
Research subject
SWEDARP; SWEDARP 2003/04, King George Island; SWEDARP 2004/05, UV-strålningens effekter på bentiska primärproducenter i Antarktis
Identifiers
URN: urn:nbn:se:polar:diva-2560DOI: 10.1515/BOT.2009.076ISI: 000272161600014OAI: oai:DiVA.org:polar-2560DiVA: diva2:883110
Available from: 2015-12-16 Created: 2015-12-16 Last updated: 2015-12-16

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