When do Janzen–Connell effects matter? A phylogenetic meta‐analysis of conspecific negative distance and density dependence experiments

Ecology Letters - Tập 24 Số 3 - Trang 608-620 - 2021
Xiaoyang Song1,2, Jun Ying Lim3, Jie Yang1,2, Matthew Scott Luskin4
1Center of Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Mengla, 666303, China
2Center of Plant Ecology Core Botanical Gardens Chinese Academy of Sciences Mengla666303China; Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of Sciences Yunnan666303China
3School of Biological Sciences, Nanyang Technological University, Singapore
4School of Biological Sciences, University of Queensland, Brisbane, QLD 4072, Australia

Tóm tắt

AbstractThe Janzen–Connell (J‐C) hypothesis suggests that specialised natural enemies cause distance‐ or density‐dependent mortality among host plants and is regarded as an important mechanism for species coexistence. However, there remains debate about whether this phenomenon is widespread and how variation is structured across taxa and life stages. We performed the largest meta‐analysis of experimental studies conducted under natural settings to date. We found little evidence of distance‐dependent or density‐dependent mortality when grouping all types of manipulations. Our analysis also reveals very large variation in response among species, with 38.5% of species even showing positive responses to manipulations. However, we found a strong signal of distance‐dependent mortality among seedlings but not seed experiments, which we attribute to (a) seedlings sharing susceptible tissues with adults (leaves, wood, roots), (b) seedling enemies having worse dispersal than seed enemies and (c) seedlings having fewer physical and chemical defences than seeds. Both density‐ and distance‐dependent mortality showed large variation within genera and families, suggesting that J‐C effects are not strongly phylogenetically conserved. There were no clear trends with latitude, rainfall or study duration. We conclude that J‐C effects may not be as pervasive as widely thought. Understanding the variation in J‐C effects provides opportunities for new discoveries that will refine our understanding of J‐C effects and its role in species coexistence.

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Tài liệu tham khảo

10.1111/j.1365-2745.2009.01523.x

10.1111/j.1461-0248.2006.00996.x

10.1111/j.1461-0248.2005.00741.x

10.1111/ele.13098

10.1007/978-3-319-68228-0_1

10.1038/nature12911

10.1111/icad.12337

10.1371/journal.pone.0066764

10.1111/j.1365-2745.2012.01978.x

10.1016/j.tree.2005.05.001

Carson W.P., 2008, Tropical Forest Community Ecology, 210

10.1111/j.1461-0248.2009.01314.x

10.1111/j.1461-0248.2012.01776.x

10.1146/annurev.ecolsys.31.1.343

10.1126/science.aar4685

10.1086/711042

10.1126/science.1248110

10.1126/science.aan6356

10.1890/08-0451.1

10.1126/science.1190772

10.1111/1365-2745.12232

10.1007/s13595-018-0750-6

10.1093/acprof:oso/9780199681341.001.0001

10.1111/ele.13278

Connell J.H., 1971, Dynamics of Populations, 298

10.1017/S0266467414000406

10.1111/j.1365-2745.2010.01739.x

10.1111/1365-2745.13286

10.1111/ele.13372

10.1126/science.1225520

10.1038/nature05884

10.1111/ele.13499

10.1073/pnas.1707727114

10.1073/pnas.1423042112

10.1126/science.aau9460

10.1111/ele.12261

10.1111/ele.12637

Gillett J.B., 1962, Pest pressure, an underestimated factor in evolution, Systematics Association Publication, 4, 37

10.1046/j.1365-2745.1999.00333.x

10.1111/geb.12686

10.1111/btp.12602

10.1111/j.1600-0706.2013.00835.x

10.1111/ele.13359

10.1146/annurev-ecolsys-110411-160411

10.1078/1433-8319-00050

10.1126/science.aar2435

10.1034/j.1600-0706.2003.12235.x

10.1086/282687

10.2307/2259466

10.1038/s41467-019-14140-y

10.1073/pnas.1707984115

10.1111/ecog.04434

10.1126/science.1220269

10.1098/rspb.2017.2210

10.1111/nph.13300

10.1111/geb.12347

10.1073/pnas.0904786106

10.1038/nature00809

10.1111/ele.12643

10.1890/13-0623.1

10.1073/pnas.1813211116

10.1111/geb.12336

10.1111/j.1461-0248.2011.01715.x

10.1111/1365-2435.13345

10.1111/j.1461-0248.2008.01229.x

Lu J., 2015, Density dependence and habitat preference shape seedling survival in a subtropical forest in central China, J. Plant Ecol., 8, 568

10.1093/sysbio/syu070

10.1038/nature09273

10.1111/mec.13999

10.1111/oik.06785

10.1111/j.1365-2745.2010.01693.x

10.1111/1365-2745.13373

10.1111/j.1365-2435.2010.01814.x

10.1890/10-2241.1

10.1007/s10682-012-9555-5

10.1038/ncomms11351

10.1890/06-1835.1

10.1111/j.1461-0248.2011.01705.x

10.1073/pnas.1516525113

10.1016/j.foreco.2018.04.055

Ridley H.N., 1930, The Dispersal of Plants Throughout the World

10.1016/j.gecco.2017.06.001

10.1073/pnas.1202907109

10.1371/journal.pone.0171843

10.1073/pnas.1706324114

10.1146/annurev.ecolsys.39.110707.173430

10.1079/9780851995250.0019

10.1111/ele.12130

10.1002/ecy.2533

10.1002/ecy.3083

Song X.&Corlett R.T.(2020)Which enemies‐mediate distance‐ and density‐dependence of tree seeds and seedlings?A meta‐analysis of fungicide insecticide and exclosure studies. Preprint DOI: 10.13140/RG.2.2.22228.63362.

10.1086/710486

10.1016/j.tpb.2015.10.006

10.1086/664183

10.1098/rspb.2014.0555

10.1515/9781400883790

10.18637/jss.v036.i03

10.1007/s10886-013-0362-4

10.1111/j.1461-0248.2010.01515.x

10.1002/ecy.1519

10.1038/s42003-020-1041-y

Zhang J.L.(2017).plantlist: looking up the status of plant scientific names based on the plant list database. R package version0.3.0. https://github.com/helixcn/plantlist/.

10.1111/1365-2745.12588

10.1890/14-1780.1

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Ecology Letters

Tập 24 Số 3

608-620

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