Ecosystem indicators-accounting for variability in species' trophic levels

doi:10.1093/icesjms/fsw150

	Ecosystem indicators-accounting for variability in species' trophic levels
	Reed, Jodie 1,2,3,4,5; Shannon, Lynne 1; Velez, Laure 3,4,5; Akoglu, Ekin 6; Bundy, Alida 7; Coll, Marta 1,2,3,4,8; Fu, Caihong 9; Fulton, Elizabeth A.10; Gruss, Arnaud 11,12; Halouani, Ghassen 13,14
刊名	ICES JOURNAL OF MARINE SCIENCE
	2017
卷号	74 期号:1 页码:158-169
关键词	ecosystem indicators ecosystem models fishing effects fishing scenarios trophic level-based indicators
ISSN号	1054-3139
DOI	10.1093/icesjms/fsw150
英文摘要	Trophic level (TL)-based indicators are commonly used to track the ecosystem effects of fishing as the selective removal of organisms from the food web may result in changes to the trophic structure of marine ecosystems. The use of a fixed TL per species in the calculation of TL-based indicators has been questioned, given that species' TLs vary with ontogeny, as well as over time and space. We conducted a model-based assessment of the performance of fixed TL-based indicators vs. variable TL-based indicators for tracking the effects of fishing pressure. This assessment considered three TL-based indicators (the trophic level of the landed catch (TLc), the marine trophic index (MTI) and the trophic level of the surveyed community (TLsc)), three fishing scenarios that targeted specific model groups (the low TL scenario (LTL), the high TL scenario (HTL) and a scenario encompassing broad-scale exploitation (ALL)) and ten contrasting marine ecosystems with four types of ecosystem modelling approaches that differ in their structure and assumptions. Results showed that, overall, variable TL-based indicators have a greater capacity for detecting the effects of fishing pressure than fixed TL-based indicators. Across TL-based indicators, TLsc displayed the most consistent response to fishing whether fixed or variable species' TLs were used, as well as the highest capacity for detecting fishing effects. This result supports previous studies that promote the use of survey-based indicators over catch-based indicators to explore the impacts of fishing on the structure of marine ecosystems. Across fishing scenarios, the low trophic level fishing scenario (LTL) resulted in the lowest consistency between fixed and variable TL-based indicator responses and the lowest capacity of TL-based indicators for detecting fishing effects. Overall, our results speak to the need for caution when interpreting TL-based indicator trends, and knowledge of the broader context, such as fishing strategies and exploitation history.
资助项目	Natural Environment Research Council[NE/L003058/1]
WOS关键词	SOUTHERN BENGUELA ECOSYSTEM ; INDIVIDUAL-BASED MODEL ; FOOD-WEB DYNAMICS ; MARINE ECOSYSTEMS ; TROPHODYNAMIC INDICATORS ; ECOLOGICAL INDICATORS ; FISH COMMUNITY ; SIZE-SPECTRA ; FISHERIES ; MANAGEMENT
WOS研究方向	Fisheries ; Marine & Freshwater Biology ; Oceanography
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000397136400015
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/25274]
专题	自然资源部第一海洋研究所
通讯作者	Shin, Yunne-Jai
作者单位	1.Univ Cape Town, Marine Res Inst, Private Bag X3, ZA-7701 Rondebosch, South Africa 2.Univ Cape Town, Dept Biol Sci, Private Bag X3, ZA-7701 Rondebosch, South Africa 3.Inst Rech Dev, Res Unit, MARBEC, UMR 248, Ave Jean Monnet,CS 30171, F-34203 Sete, France 4.CRH, LMI ICEMASA, Ave Jean Monnet,CS 30171, F-34203 Sete, France 5.Univ Montpellier, Pl Eugene Bataillon,Batiment 24,CC,093, F-34095 Montpellier 05, France 6.Middle East Tech Univ, Inst Marine Sci, POB 28, TR-33731 Erdemli, Mersin, Turkey 7.Fisheries & Oceans Canada, Bedford Inst Oceanog, 1 Challenger Dr, Dartmouth, NS B2Y 4A2, Canada 8.CSIC, Inst Marine Sci ICM, Passeig Maritim Barceloneta,37-49, Barcelona 08003, Spain 9.Fisheries & Oceans Canada, Pacific Biol Stn, Nanaimo, BC V9T 6N7, Canada 10.CSIRO Oceans & Atmosphere, GPO Box 1538, Hobart, Tas 7001, Australia
推荐引用方式 GB/T 7714	Reed, Jodie,Shannon, Lynne,Velez, Laure,et al. Ecosystem indicators-accounting for variability in species' trophic levels[J]. ICES JOURNAL OF MARINE SCIENCE,2017,74(1):158-169.
APA	Reed, Jodie.,Shannon, Lynne.,Velez, Laure.,Akoglu, Ekin.,Bundy, Alida.,...&Shin, Yunne-Jai.(2017).Ecosystem indicators-accounting for variability in species' trophic levels.ICES JOURNAL OF MARINE SCIENCE,74(1),158-169.
MLA	Reed, Jodie,et al."Ecosystem indicators-accounting for variability in species' trophic levels".ICES JOURNAL OF MARINE SCIENCE 74.1(2017):158-169.