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231224s2017 xx |||||o 00| ||eng c |
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|a 10.1111/gcb.13552
|2 doi
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|a pubmed24n0886.xml
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|a (DE-627)NLM265888530
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|a (NLM)27809393
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Messmer, Vanessa
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Global warming may disproportionately affect larger adults in a predatory coral reef fish
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|c 2017
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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| 500 |
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|a Date Completed 20.10.2017
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|a Date Revised 02.12.2018
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2016 John Wiley & Sons Ltd.
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|a Global warming is expected to reduce body sizes of ectothermic animals. Although the underlying mechanisms of size reductions remain poorly understood, effects appear stronger at latitudinal extremes (poles and tropics) and in aquatic rather than terrestrial systems. To shed light on this phenomenon, we examined the size dependence of critical thermal maxima (CTmax) and aerobic metabolism in a commercially important tropical reef fish, the leopard coral grouper (Plectropomus leopardus) following acclimation to current-day (28.5 °C) vs. projected end-of-century (33 °C) summer temperatures for the northern Great Barrier Reef (GBR). CTmax declined from 38.3 to 37.5 °C with increasing body mass in adult fish (0.45-2.82 kg), indicating that larger individuals are more thermally sensitive than smaller conspecifics. This may be explained by a restricted capacity for large fish to increase mass-specific maximum metabolic rate (MMR) at 33 °C compared with 28.5 °C. Indeed, temperature influenced the relationship between metabolism and body mass (0.02-2.38 kg), whereby the scaling exponent for MMR increased from 0.74 ± 0.02 at 28.5 °C to 0.79 ± 0.01 at 33 °C, and the corresponding exponents for standard metabolic rate (SMR) were 0.75 ± 0.04 and 0.80 ± 0.03. The increase in metabolic scaling exponents at higher temperatures suggests that energy budgets may be disproportionately impacted in larger fish and contribute to reduced maximum adult size. Such climate-induced reductions in body size would have important ramifications for fisheries productivity, but are also likely to have knock-on effects for trophodynamics and functioning of ecosystems
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|a Journal Article
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|a Plectropomus leopardus
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| 650 |
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4 |
|a Great Barrier Reef
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| 650 |
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4 |
|a body size
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| 650 |
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4 |
|a climate change
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| 650 |
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4 |
|a critical thermal maximum
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| 650 |
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4 |
|a metabolic rate
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| 650 |
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4 |
|a thermal tolerance
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| 700 |
1 |
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|a Pratchett, Morgan S
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hoey, Andrew S
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tobin, Andrew J
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Coker, Darren J
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cooke, Steven J
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Clark, Timothy D
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Global change biology
|d 1999
|g 23(2017), 6 vom: 21. Juni, Seite 2230-2240
|w (DE-627)NLM098239996
|x 1365-2486
|7 nnns
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| 773 |
1 |
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|g volume:23
|g year:2017
|g number:6
|g day:21
|g month:06
|g pages:2230-2240
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| 856 |
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|u http://dx.doi.org/10.1111/gcb.13552
|3 Volltext
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