Modelling spatio-temporal patterns of fish community size structure across the northern Mediterranean Sea: an analysis combining MEDITS survey data with environmental and anthropogenic drivers

被引：10

作者：

Bitetto, Isabella ^{[1
]}

Romagnoni, Giovanni ^{[1
,2
]}

Adamidou, Angeliki ^{[3
]}

Certain, Gregoire ^{[4
]}

Di Lorenzo, Manfredi ^{[5
]}

Donnaloia, Marilena ^{[1
]}

Lembo, Giuseppe ^{[1
]}

Maiorano, Porzia ^{[6
]}

Milisenda, Giacomo ^{[7
]}

Musumeci, Claudia ^{[8
]}

Ordines, Francesc ^{[9
]}

Pesci, Paola ^{[10
]}

Peristeraki, Panagiota ^{[11
]}

Pesic, Ana ^{[12
]}

Sartor, Paolo ^{[8
]}

Spedicato, Maria Teresa ^{[1
]}

机构：

[1] COISPA Tecnol & Ric, Bari, Italy

[2] Univ Oslo, Dept Biosci, CEES, Oslo, Norway

[3] FRI, Kavala, Greece

[4] UMR MARBEC IFREMER LHM, Sete, France

[5] Natl Res Council IRBIM CNR, Inst Biol Resources & Marine Biotechnol, Via Luigi Vaccara 61, I-91026 Mazara Del Vallo, TP, Italy

[6] Bari Univ Aldo Moro, Dipartimento Biol, Bari, Italy

[7] SZN Stn Zool Anton Dohrn, Dipartimento Ecol Marina Integrate, Viale Cristolimo Colombo, I-90142 Palermo, Italy

[8] CIBM, Livorno, Italy

[9] Ctr Oceanog Balears, Inst Espanol Oceanog, Palma De Mallorca 07015, Illes Balears, Spain

[10] Univ Cagliari, Dept Life & Environm Sci, Via T Fiorelli 1, I-09126 Cagliari, Italy

[11] Hellen Ctr Marine Res, Iraklion, Greece

[12] Univ Montenegro, Inst Marine Biol, Kotor, Montenegro

来源：

SCIENTIA MARINA | 2019年 / 83卷

关键词：

demersal fish community; size structure indicators; geographical sub-area; Marine Strategy Framework Directive; dynamic factor analysis; redundancy analysis; ECOLOGICAL INDICATORS; MARINE; SPECIFICITY; MANAGEMENT; TRENDS; IMPACT;

D O I：

10.3989/scimar.05015.06A

中图分类号：

Q17 [水生生物学];

学科分类号：

071004 ;

摘要：

The state of marine systems subject to natural or anthropogenic impacts can be generally summarized by suites of ecological indicators carefully selected to avoid redundancy. Length-based indicators capture the status of fish community structure, fulfilling the Marine Strategy Framework Directive (MSFD) requirement for Descriptor 3 (status of commercial fish species). Although the MSFD recommends the development of regional indicators, a comparison among alternative length-based indicators is so far missing for the Mediterranean Sea. Using principal component analysis and dynamic factor analysis, we identified the most effective subset of length-based indicators, whether or not based on maximum length. Indicator trends and lime series of fishing effort and environmental variables are also compared in order to highlight the individual and combined capability of indicators to track system changes across geographical sub-areas. Two indicators, typical length and mean maximum length, constitute the smallest set of non-redundant indicators, capturing together 87.45% of variability. Only in combination can these indicators disentangle changes in the fish community composition from modifications of size structure. Our study supports the inclusion of typical length among the regional MSFD Descriptor 3 indicators for the Mediterranean Sea. Finally, we show dissimilarity between the western and eastern-central Mediterranean, suggesting that there are sub-regional differences in stressors and community responses.

引用

页码：141 / 151

页数：11