Journal ArticleDOI
Eutrophication causes speciation reversal in whitefish adaptive radiations
Pascal Vonlanthen,David Bittner,David Bittner,Alan G. Hudson,Alan G. Hudson,Kyle A. Young,Kyle A. Young,Rudolf Müller,Bänz Lundsgaard-Hansen,Bänz Lundsgaard-Hansen,Denis Roy,Denis Roy,S. Di Piazza,S. Di Piazza,Carlo R. Largiadèr,Ole Seehausen,Ole Seehausen +16 more
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TLDR
Evidence is provided that species diversity evolved in response to ecological opportunity, and that eutrophication, by diminishing this opportunity, has driven extinctions through speciation reversal and demographic decline, and it is argued that extinction by Speciation reversal may be more widespread than currently appreciated.Abstract:
Species diversity can be lost through two different but potentially interacting extinction processes: demographic decline and speciation reversal through introgressive hybridization. To investigate the relative contribution of these processes, we analysed historical and contemporary data of replicate whitefish radiations from 17 pre-alpine European lakes and reconstructed changes in genetic species differentiation through time using historical samples. Here we provide evidence that species diversity evolved in response to ecological opportunity, and that eutrophication, by diminishing this opportunity, has driven extinctions through speciation reversal and demographic decline. Across the radiations, the magnitude of eutrophication explains the pattern of species loss and levels of genetic and functional distinctiveness among remaining species. We argue that extinction by speciation reversal may be more widespread than currently appreciated. Preventing such extinctions will require that conservation efforts not only target existing species but identify and protect the ecological and evolutionary processes that generate and maintain species.read more
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Journal ArticleDOI
Genomics and the origin of species
Ole Seehausen,Roger K. Butlin,Irene Keller,Catherine E. Wagner,Janette W. Boughman,Paul A. Hohenlohe,Catherine L. Peichel,Glenn-Peter Sætre,Claudia Bank,Åke Brännström,Alan Brelsford,Chris S Clarkson,Fabrice Eroukhmanoff,Jeffrey L. Feder,Martin C. Fischer,Andrew D. Foote,Paolo Franchini,Chris D. Jiggins,Felicity C. Jones,Anna K. Lindholm,Kay Lucek,Martine E. Maan,David Alexander Marques,Simon H. Martin,Blake Matthews,Joana I. Meier,Markus Möst,Michael W. Nachman,Etsuko Nonaka,Diana J. Rennison,Julia Schwarzer,E. Watson,Anja M. Westram,Alex Widmer +33 more
TL;DR: Emergent trends and gaps in understanding are identified, new approaches to more fully integrate genomics into speciation research are proposed, and an integrative definition of the field of speciation genomics is provided.
Journal ArticleDOI
Diversity loss with persistent human disturbance increases vulnerability to ecosystem collapse
TL;DR: This research shows how biodiversity can be crucial for ecosystem stability despite appearing functionally insignificant beforehand, a relationship probably applicable to many ecosystems given the globally prevalent combination of intensive long-term land management and species loss.
Journal ArticleDOI
DNA barcode reference libraries for the monitoring of aquatic biota in Europe: Gap-analysis and recommendations for future work.
Hannah Weigand,Arne J. Beermann,Fedor Čiampor,Filipe O. Costa,Zoltán Csabai,Sofia Alexandra Ferreira Duarte,Matthias F. Geiger,Michał Grabowski,Frédéric Rimet,Björn Rulik,Malin Strand,Nikolaus U. Szucsich,Alexander M. Weigand,Endre Willassen,Sofia A. Wyler,Agnès Bouchez,Ángel Borja,Zuzana Čiamporová-Zaťovičová,Sonia Maria Soares Ferreira,Klaas-Douwe B. Dijkstra,Ursula Eisendle,Jörg Freyhof,Piotr Gadawski,Wolfram Graf,Arne Haegerbaeumer,Berry van der Hoorn,Bella Japoshvili,Lujza Keresztes,Emre Keskin,Florian Leese,Jan Macher,Tomasz Mamos,Guy Paz,Vladimir Pešić,Daniela Marić Pfannkuchen,Martin Pfannkuchen,Benjamin W. Price,B. Rinkevich,Marcos A. L. Teixeira,Gábor Várbíró,Torbjørn Ekrem +40 more
TL;DR: This work analysed gaps in the two most important reference databases, Barcode of Life Data Systems (BOLD) and NCBI GenBank, with a focus on the taxa most frequently used in WFD and MSFD, and found that coverage varies strongly among taxonomic groups, and among geographic regions.
Journal ArticleDOI
Global spread of hypoxia in freshwater ecosystems during the last three centuries is caused by rising local human pressure.
Jean-Philippe Jenny,Jean-Philippe Jenny,Pierre Francus,Alexandre Normandeau,François Lapointe,Marie-Elodie Perga,Antti E.K. Ojala,Arndt Schimmelmann,Bernd Zolitschka +8 more
TL;DR: There is no evidence for a post-1980s return to well-oxygenated lacustrine conditions in industrialized countries despite the implementation of restoration programs, and it is shown that the increase of human activities and nutrient release is leading to hypoxia onset.
Journal ArticleDOI
Tracing bottom water oxygenation with sedimentary Mn/Fe ratios in Lake Zurich, Switzerland
Sebastian Naeher,Sebastian Naeher,Adrian Gilli,Ryan P. North,Ryan P. North,Yvonne Hamann,Carsten J. Schubert +6 more
TL;DR: In this paper, the authors studied the redox dynamics of manganese (Mn) in the sediment of Lake Zurich using precise sediment core age models, monthly long-term oxygen (O 2 ) monitoring data of the water column (1936-2010) and high-resolution XRF core scanning.
References
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