A meta‐analysis reveals a positive correlation between genetic diversity metrics and environmental status in the long‐lived seagrassPosidonia oceanica

Molecular Ecology - Tập 24 Số 10 - Trang 2336-2348 - 2015
Marlene Jahnke1, Jørn Olsen2,3, Gabriele Procaccini1
1Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121, Naples, Italy
2Marine Benthic Ecology and Evolution Group Groningen Institute for Evolutionary Life Sciences (GELIFES) University of Groningen Postbus, 11103 9700CC Groningen The Netherlands
3Olsen lab

Tóm tắt

Abstract

The seagrassPosidonia oceanicais a key engineering species structuring coastal marine systems throughout much of theMediterranean basin. Its decline is of concern, leading to the search for short‐ and long‐term indicators of seagrass health. UsingArcGISmaps from a recent, high‐resolution (1–4 km) modelling study of 18 disturbance factors affecting coastal marine systems across theMediterranean (Micheliet al. 2013,http://globalmarine.nceas.ucsb.edu/mediterranean/), we tested for correlations with genetic diversity metrics (allelic diversity, genotypic/clonal diversity and heterozygosity) in a meta‐analysis of 56 meadows. Contrary to initial predictions, weak but significantlypositivecorrelations were found for commercial shipping, organic pollution (pesticides) and cumulative impact. This counterintuitive finding suggests greater resistance and resilience of individuals with higher genetic and genotypic diversity under disturbance (at least for a time) and/or increased sexual reproduction under an intermediate disturbance model. We interpret the absence of low and medium levels of genetic variation at impacted locations as probable local extinctions of individuals that already exceeded their resistance capacity. Alternatively, high diversity at high‐impact sites is likely a temporal artefact, reflecting the mismatch with pre‐environmental impact conditions, especially because flowering and sexual recruitment are seldom observed. While genetic diversity metrics are a valuable tool for restoration and mitigation, caution must be exercised in the interpretation of correlative patterns as found in this study, because the exceptional longevity of individuals creates a temporal mismatch that may falsely suggest good meadow health status, while gradual deterioration of allelic diversity might go unnoticed.

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Tài liệu tham khảo

10.1046/j.1471-8286.2003.00415.x

10.3354/meps298115

Allendorf FW, 2013, Conservation and the Genetics of Populations

10.1126/science.1140597

10.1007/s10750-010-0255-2

10.1111/j.1471-8286.2006.01522.x

10.1111/j.1365-2699.2006.01671.x

10.1007/s12237-009-9238-9

10.1371/journal.pone.0030454

10.1093/jhered/esu015

Balduzzi A, 1984, International Workshop on Posidonia oceanica Beds, 73

Bianchi CN, 1995, Atlante delle Fanerogame Marine della Liguria: Posidonia oceanica e Cymodocea nodosa

10.1515/BOT.2009.057

10.1016/j.ecolind.2012.03.022

10.1111/j.1439-0426.2012.01937.x

10.2307/1542430

10.1016/j.marenvres.2006.10.004

10.1126/science.199.4335.1302

10.1111/j.1755-0998.2009.02731.x

10.1093/aob/mcm288

Diaz‐Almela E, 2008, Management of Natura 2000 Habitats. 1120 *Posidonia Beds (Posidonion oceanica)

10.1007/s00227-005-0127-x

10.1007/s10592-007-9288-0

10.1111/j.1365-2486.2006.01260.x

10.1016/j.aquabot.2008.04.012

10.1046/j.1365-2745.2001.00558.x

10.3354/meps07369

10.1007/s10592-014-0573-4

10.3354/meps07705

10.1016/j.tree.2012.08.014

10.1002/(SICI)1099-0755(199907/08)9:4<391::AID-AQC356>3.0.CO;2-8

10.1088/1748-9326/7/2/024006

10.1126/science.1149345

10.1046/j.1365-294X.2003.01766.x

10.1073/pnas.0402642101

Hughes AR, 2011, Seagrass genotypic diversity increases disturbance response via complementarity and dominance, Journal of Ecology, 99, 445, 10.1111/j.1365-2745.2010.01767.x

10.1111/j.1461-0248.2007.01075.x

10.1111/j.1461-0248.2008.01179.x

10.1038/nclimate1533

10.1111/j.1523-1739.2009.01425.x

10.1086/413902

MarbàN Díaz‐AlmelaE DuarteCM(2013a)Posidonia oceanica changes in the Mediterranean Sea [Dataset].http://digital.csic.es/handle/10261/88165. Accessed September 15 2014.

10.1007/s10750-012-1403-7

10.1016/j.biocon.2014.05.024

10.1186/1472-6785-13-39

10.1006/ecss.1996.0116

10.1016/j.aquabot.2008.04.013

MicheliF WalbridgeS HalpernBS(2011)A map of cumulative human impacts on Mediterranean marine ecosystems. Available:http://globalmarine.nceas.ucsb.edu/mediterranean/. Accessed June to October 2013.

10.1371/journal.pone.0079889

10.3354/meps304055

10.1080/02757540600571976

10.1016/j.marpolbul.2008.05.013

10.1111/j.1365-294X.2011.05133.x

10.1016/j.marpolbul.2006.11.014

10.2112/SI61-001.51

10.1016/j.biocon.2014.05.001

10.1093/bioinformatics/bts460

10.1046/j.1526-100x.2001.009003332.x

10.1093/jhered/89.6.562

10.1016/j.jembe.2007.05.035

Quantum GIS Development Team(2013)Quantum GIS geographic information system. Open source geospatial foundation project.http://qgisosgeoorg. Accessed May 5 2014.

R Development Core Team, 2012, R: A Language and Environment for Statistical Computing

10.1111/j.1365-294X.2005.02779.x

10.1007/BF02784707

10.3354/meps183301

10.1073/pnas.0500008102

10.1371/journal.pone.0038397

10.1023/A:1014207122382

10.1111/j.1365-294X.2009.04462.x

10.1016/j.biocon.2011.04.010

Spielmann D, 2004, Most species are not driven to extinction before genetic factors impact them, Proceedings of the National Academy of Sciences of the United States of America, 101, 15261, 10.1073/pnas.0403809101

10.1111/j.1439-0485.2009.00285.x

10.4161/psb.5.8.11826

10.1073/pnas.0905620106

10.1890/1051-0761(2001)011[1472:RGDIET]2.0.CO;2

10.1016/j.tree.2012.08.024

10.1126/science.1132294

Zavodnik N, 1990, Long‐term changes in the northern Adriatic marine phanerogam beds, Rapport de la Commission Internationale pour l'Exploration Scientifique de la Mer Méditeranée, 32, 15

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Molecular Ecology

Tập 24 Số 10

2336-2348

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