Percorrer por autor "Zhang, Jie"
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- Detecting no natural hybridization and predicting range overlap inSaccharina angustataandSaccharina japonicaPublication . Zhang, Jie; Yotsukura, Norishige; Jueterbock, Alexander; Hu, Zi-Min; Assis, Jorge; Nagasato, Chikako; Yao, Jianting; Duan, DelinNatural hybridization can play a significant role in evolutionary processes and influence the adaptive diversification and speciation of brown seaweeds. However, this phenomenon is as yet unknown inSaccharinakelps.Saccharina angustataand two varieties ofSaccharina japonica(S. japonicavar.japonicaandS. japonicavar.diabolica) partly overlap in distribution along the Pacific coast of Hokkaido, which makes them a good model system to study hybridization and introgression among species of the genusSaccharina. Based on 13 highly variable nuclear microsatellites and a mitochondrial marker, we assessed the genetic diversity levels ofS. angustatafor the first time and populations from Muroran to Shiranuka (western part of the Pacific coast in Hokkaido) exhibited highest genetic diversity. Genetic diversity ofS. japonicawas higher inS. japonicavar.japonicaas compared withS. japonicavar.diabolica. There was significant genetic differentiation (F-ST > 0.25,p < 0.05) betweenS. japonicaandS. angustatabased on both markers. Moreover, there was poor genetic connectivity and limited interspecific hybridization among these closely relatedSaccharinaspecies. Ecological niche models projected a northward expansion of bothS. japonicaandS. angustataunder future climate scenarios and a range overlap between two species along the coast of Okhotsk Sea in Kamchatka Peninsula. The interspecific hybridization and genetic diversity among these kelps provide insights for kelp selection and cultivation as well as future conservation strategies of wild stocks.
- Intraspecific genetic variation matters when predicting seagrass distribution under climate changePublication . Hu, Zi‐Min; Zhang, Quan‐Sheng; Zhang, Jie; Kass, Jamie M.; Mammola, Stefano; Fresia, Pablo; Draisma, Stefano G. A.; Assis, Jorge; Jueterbock, Alexander; Yokota, Masashi; Zhang, ZhixinSeagrasses play a vital role in structuring coastal marine ecosystems, but their distributional range and genetic diversity have declined rapidly in recent decades. To improve conservation of seagrass species, it is important to predict how climate change may impact their ranges. Such predictions are typically made with correlative species distribution models (SDMs), which can estimate a species' potential distribution under present and future climatic scenarios given species' presence data and climatic predictor variables. However, these models are typically constructed with species-level data, and thus ignore intraspecific genetic variability, which can give rise to populations with adaptations to heterogeneous climatic conditions. Here, we explore the link between intraspecific adaptation and niche differentiation in Thalassia hemprichii, a seagrass broadly distributed in the tropical Indo-Pacific Ocean and a crucial provider of habitat for numerous marine species. By retrieving and re-analysing microsatellite data from previous studies, we delimited two distinct phylogeographical lineages within the nominal species and found an intermediate level of differentiation in their multidimensional environmental niches, suggesting the possibility for local adaptation. We then compared projections of the species' habitat suitability under climate change scenarios using species-level and lineage-level SDMs. In the Central Tropical Indo-Pacific region, models for both levels predicted considerable range contraction in the future, but the lineage-level models predicted more severe habitat loss. Importantly, the two modelling approaches predicted opposite patterns of habitat change in the Western Tropical Indo-Pacific region. Our results highlight the necessity of conserving distinct populations and genetic pools to avoid regional extinction due to climate change and have important implications for guiding future management of seagrasses.
- Roadmap to sustainably develop the European seaweed industryPublication . Jueterbock, Alexander; Hoarau-Heemstra, Hindertje; Wigger, Karin; Duarte, Bernardo; Bruckner, Christian; Chapman, Annelise; Duan, Delin; Engelen, Aschwin; Gauci, Clément; Hill, Griffin; Hu, Zi-Min; Khanal, Prabhat; Khatei, Ananya; Mackintosh, Amy; Meland, Heidi; Melo, Ricardo; Nilsen, Anne M. L.; Olsen, Leonore; Rautenberger, Ralf; Reiss, Henning; Zhang, JieHow to build a sustainable seaweed industry is important in Europe's quest to produce 8 million tons of seaweed by 2030. Based on interviews with industry representatives and an expert-workshop, we developed an interdisciplinary roadmap that addresses sustainable development holistically. We argue that sustainable practices must leverage synergies with existing industries (e.g. IMTA systems, offshore wind farms), as the industry develops beyond experimental cultivation towards economic viability.