DOI: 10.1016/j.marpolbul.2014.03.050
Scopus记录号: 2-s2.0-84902103496
论文题名: Temperature extremes reduce seagrass growth and induce mortality
作者: Collier C.J. ; Waycott M.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2014
卷: 83, 期: 2 起始页码: 483
结束页码: 490
语种: 英语
英文关键词: Intertidal seagrass
; Low light
; Mortality
; Photosynthesis
; Temperature extremes
Scopus关键词: Photosynthesis
; Temperature
; Critical threshold
; Ecological functions
; Increasing temperatures
; Low light
; Mortality
; Seagrasses
; Temperature extremes
; Water temperatures
; Plants (botany)
; climate change
; experimental study
; extreme event
; growth rate
; growth response
; high temperature
; intertidal environment
; meadow
; mortality
; photosynthesis
; seagrass
; senescence
; temperature effect
; article
; controlled study
; growth inhibition
; leaf growth
; mortality
; nonhuman
; photosynthesis
; quantum yield
; seagrass
; species difference
; tropics
; water temperature
; Alismatales
; growth, development and aging
; physiology
; sea
; temperature
; Australia
; Coral Sea
; Great Barrier Reef
; Pacific Ocean
; Queensland
; Alismatidae
; Oceans and Seas
; Temperature
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: Extreme heating (up to 43°C measured from five-year temperature records) occurs in shallow coastal seagrass meadows of the Great Barrier Reef at low tide. We measured effective quantum yield (φPSII), growth, senescence and mortality in four tropical seagrasses to experimental short-duration (2.5h) spikes in water temperature to 35°C, 40°C and 43°C, for 6 days followed by one day at ambient temperature. Increasing temperature to 35°C had positive effects on φPSII (the magnitude varied between days and was highly correlated with PPFD), with no effects on growth or mortality. 40°C represented a critical threshold as there were strong species differences and there was a large impact on growth and mortality. At 43°C there was complete mortality after 2-3days. These findings indicate that increasing duration (more days in a row) of thermal events above 40°C is likely to affect the ecological function of tropical seagrass meadows. © 2014 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/85451
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
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作者单位: School of Marine and Tropical Biology, James Cook University, Townsville 4817, Australia; School of Earth and Environmental Sciences, Australian Centre for Evolutionary Biology and Biodiversity, University of Adelaide, Adelaide, SA 5001, Australia
Recommended Citation:
Collier C.J.,Waycott M.. Temperature extremes reduce seagrass growth and induce mortality[J]. Marine Pollution Bulletin,2014-01-01,83(2)