| Branching networks can have opposing influences on genetic variation in riverine metapopulations | |
| Chiu, Ming-Chih1,2; Li, Bin1,3; Nukazawa, Kei4; Resh, Vincent H.5; Carvajal, Thaddeus1; Watanabe, Kozo1 | |
| Corresponding Author | Watanabe, Kozo(watanabe.kozo.mj@ehime-u.ac.jp) |
| 2020-09-18 | |
| Source Publication | DIVERSITY AND DISTRIBUTIONS
 |
| ISSN | 1366-9516 |
| Pages | 12 |
| Abstract | Aim Fractal networks, represented by branching complexity in rivers, are ubiquitous in nature. In rivers, the number of either distal (e.g. in headwater streams) or confluent (e.g. in mainstems) locations can be increased along with their branching complexity. Distal- or confluent-spatial locations can result in fewer or greater corridor linkages that can alter genetic divergence at the metapopulation scale. These mechanisms underlying the resulting genetic structuring remain poorly understood at the metapopulation scale, particularly in terms of the roles of species-specific dispersal traits. The objective of this study was to mechanistically understand how branching complexity can simultaneously influence genetic divergence in opposite directions. Location North-eastern Japan. Methods To evaluate the integrated influences of network complexity and species dispersal on genetic divergence among populations at the catchment scale, we modelled metapopulation genetic dynamics under a Bayesian inference framework by adapting empirical genetic data from four macroinvertebrate species. Simulations were then performed using empirical and virtual species characteristics on virtual river networks. Results Our simulation experiments showed that both greater landscape connectivity (resulting from shorter watercourse distance) and greater isolation of distal locations occurred in the more-branched river networks. These two spatial features have negative and positive influences on genetic divergence, with their relative importance varying among different species and dispersal characteristics. Specifically, genetic divergence at the metapopulation scale increased for species having higher downstream-biased dispersal but decreased for species having higher upstream-biased dispersal. Distal populations (e.g. in headwaters) have higher genetic independence when downstream-biased asymmetry is higher. Main conclusions We found a strong association between species dispersal and evolutionary processes such as gene flow and genetic drift. This association mediates the pervasive influences of branching complexity on genetic divergence in the metapopulation. It also highlights the importance of considering species dispersal patterns when developing management strategies in the face of rapid environmental change scenarios. |
| Keyword | Bayesian inference distribution fractal geometry habitat fragmentation isolation by distance landscape complexity macroinvertebrates |
| DOI | 10.1111/ddi.13160 |
| Funding Organization | Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences |
| Indexed By | SCI ; SCI |
| Language | 英语 |
| Funding Project | Japan Society for the Promotion of Science[19K21996] ; Japan Society for the Promotion of Science[19H02276] ; Japan Society for the Promotion of Science[L18522] ; Chinese Academy of Sciences[2017TW2SA0004] |
| WOS Research Area | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| WOS Subject | Biodiversity Conservation ; Ecology |
| WOS ID | WOS:000570562400001 |
| WOS Keyword | SPATIAL-PATTERNS ; OVERLAND DISPERSAL ; AQUATIC INSECTS ; IN-STREAM ; DIVERSITY ; FLOW ; FRAGMENTATION ; CONSERVATION ; ARCHITECTURE ; RESTORATION |
| Publisher | WILEY |
| Funding Organization | Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Japan Society for the Promotion of Science ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ihb.ac.cn/handle/342005/38907 |
| Collection | 其他_期刊论文 |
| Corresponding Author | Watanabe, Kozo |
| Affiliation | 1.Ehime Univ, Ctr Marine Environm Studies CMES, Matsuyama, Ehime 7908577, Japan 2.Chinese Acad Sci, Inst Hydrobiol, Wuhan, Peoples R China 3.Shandong Normal Univ, Inst Environm & Ecol, Jinan, Peoples R China 4.Univ Miyazaki, Dept Civil & Environm Engn, Miyazaki, Japan 5.Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA |
| Recommended Citation GB/T 7714 | Chiu, Ming-Chih,Li, Bin,Nukazawa, Kei,et al. Branching networks can have opposing influences on genetic variation in riverine metapopulations[J]. DIVERSITY AND DISTRIBUTIONS,2020:12. |
| APA | Chiu, Ming-Chih,Li, Bin,Nukazawa, Kei,Resh, Vincent H.,Carvajal, Thaddeus,&Watanabe, Kozo.(2020).Branching networks can have opposing influences on genetic variation in riverine metapopulations.DIVERSITY AND DISTRIBUTIONS,12. |
| MLA | Chiu, Ming-Chih,et al."Branching networks can have opposing influences on genetic variation in riverine metapopulations".DIVERSITY AND DISTRIBUTIONS (2020):12. |
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