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Short-term nutrient pulses enhance growth and photosynthesis of the coral reef macroalga Sargassum baccularia

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dc.contributor Crc
dc.contributor James Cook Univ N Queensland
dc.contributor James Cook University
dc.contributor Reef Res Ctr
dc.contributor Australian Inst Marine Sci
dc.contributor Australian Institute Of Marine Science
dc.contributor Australian Institute Of Marine Science (aims) en KLUMPP, DW SCHAFFELKE, B 2017-03-21T01:11:42Z 2017-03-21T01:11:42Z 2013-02-28T06:46:58Z 2019-05-09T01:22:56Z 2017-03-21T01:11:42Z 2017-03-21T01:11:42Z 2013-02-28T06:46:58Z 2019-05-09T01:22:56Z 1998-01-01
dc.identifier 1432 en
dc.identifier.citation Schaffelke B and Klumpp DW (1998) Short-term nutrient pulses enhance growth and photosynthesis of the coral reef macroalga Sargassum baccularia. Marine Ecology Progress Series. 170: 95-105. en
dc.identifier.issn 0171-8630
dc.description Link to abstract/full text - en
dc.description.abstract Due to their proximity to the mainland, nearshore reefs of the Great Barrier Reef (GBR), Australia, are directly subjected to land run-off. It is assumed that enhanced nutrient inputs to coastal waters are likely to lead to enhanced growth of primary producers. We simulated the effect of enhanced nutrient inputs on the growth and productivity of Sargassum baccularia (Mertens) C. Agardh, a large fucoid seaweed with a very high abundance on a number of nearshore reefs in the GBR. Nutrients were added as short-term pulses (24 h or 1 h duration) of ammonium and phosphate in addition to the natural background nutrients. Pulses of 8 mu mol ammonium and 1 pmol phosphate, or higher, were taken up rapidly and significantly increased the tissue nutrient content in S. baccularia shoots. These nutrient stores were used to sustain enhanced growth and net-photosynthesis rates for about 1 wk. The strongest growth enhancement was obtained when ammonium and phosphate were applied together. The magnitude of the growth response was strongly dependent on the initial levels of tissue nutrients. In general, S. baccularia was highly responsive, underlining the nutrient limitation of this species at the field site. Nutrients are imported into the coastal zone of the GBR mainly by rain and riverine input, predominantly during the austral summer wet season. This is also the main growth period with the highest nutrient demand of the large Sargassum species. Our data suggest that an enhanced nutrient input during this season will significantly increase the productivity of these algae.
dc.description.uri en
dc.language English
dc.language en en
dc.relation.ispartof Marine Ecology Progress Series - pages: 170: 95-105 en
dc.relation.ispartof Null
dc.relation.uri en
dc.subject Great-barrier-reef
dc.subject Ecology
dc.subject Phosphorus
dc.subject Photosynthesis
dc.subject Marine-environment
dc.subject Coral Reef
dc.subject Australia
dc.subject Eutrophication
dc.subject Nutrient Pulses
dc.subject Environmental Sciences & Ecology
dc.subject Limited Productivity
dc.subject Magnetic Island
dc.subject Marine & Freshwater Biology
dc.subject Oceanography
dc.subject Growth Enhancement
dc.subject Sargassum
dc.subject Florida-keys
dc.subject Nitrogen Limitation
dc.subject Phase-shifts
dc.title Short-term nutrient pulses enhance growth and photosynthesis of the coral reef macroalga Sargassum baccularia
dc.type journal article en
dc.identifier.doi 10.3354/meps170095 en
dc.identifier.wos WOS:000076335500009

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