Global ocean conveyor lowers extinction risk in the deep sea

被引：44

作者：

Henry, Lea-Anne ^{[1
]}

Frank, Norbert ^{[2
]}

Hebbeln, Dierk ^{[3
]}

Wienberg, Claudia ^{[3
]}

Robinson, Laura ^{[4
]}

van de Flierdt, Tina ^{[5
]}

Dahl, Mikael ^{[6
]}

Douarin, Melanie ^{[7
]}

Morrison, Cheryl L. ^{[8
]}

Lopez Correa, Matthias ^{[9
]}

Rogers, Alex D. ^{[10
]}

Ruckelshausen, Mario ^{[2
]}

Roberts, J. Murray ^{[1
,11
,12
]}

机构：

[1] Heriot Watt Univ, Sch Life Sci, Ctr Marine Biodivers & Biotechnol, Edinburgh EH14 4AS, Midlothian, Scotland

[2] Heidelberg Univ, Inst Umweltphys, D-69120 Heidelberg, Germany

[3] Univ Bremen, MARUM Ctr Marine Environm Sci, D-28359 Bremen, Germany

[4] Univ Bristol, Dept Earth Sci, Bristol BS8 1RJ, Avon, England

[5] Univ London Imperial Coll Sci Technol & Med, Dept Earth Sci & Engn, London SW7 2AZ, England

[6] Univ Gothenburg, Dept Biol & Environm Sci, SE-45296 Gothenburg, Sweden

[7] Univ Edinburgh, Sch Geosci, Edinburgh EH9 3JW, Midlothian, Scotland

[8] US Geol Survey, Leetown Sci Ctr, Aquat Ecol Branch, Kearneysville, WV 25430 USA

[9] Univ Erlangen Nurnberg, GeoZentrum Nordbayern, D-91054 Erlangen, Germany

[10] Univ Oxford, Dept Zool, Oxford OX1 3PS, England

[11] Scottish Assoc Marine Sci, Oban PA37 1QA, Argyll, Scotland

[12] Univ N Carolina, Ctr Marine Sci, Wilmington, NC 28403 USA

来源：

DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS | 2014年 / 88卷

基金：

英国自然环境研究理事会;

关键词：

Atlantic meridional overturning circulation; Deep sea; Climate change; Extinction; Larval dispersal; Connectivity; ANTARCTIC INTERMEDIATE WATER; GENETIC-STRUCTURE; CLIMATE-CHANGE; OVERTURNING CIRCULATION; NORTHEAST ATLANTIC; LOPHELIA-PERTUSA; SUBPOLAR GYRE; CORALS; STRENGTH; GROWTH;

D O I：

10.1016/j.dsr.2014.03.004

中图分类号：

P7 [海洋学];

学科分类号：

0707 ;

摘要：

General paradigms of species extinction risk are urgently needed as global habitat loss and rapid climate change threaten Earth with what could be its sixth mass extinction. Using the stony coral Lophelia pertusa as a model organism with the potential for wide larval dispersal, we investigated how the global ocean conveyor drove an unprecedented post-glacial range expansion in Earth's largest biome, the deep sea. We compiled a unique ocean-scale dataset of published radiocarbon and uranium-series dates of fossil corals, the sedimentary protactinium-thorium record of Atlantic meridional overturning circulation (AMOC) strength, authigenic neodymium and lead isotopic ratios of circulation pathways, and coral biogeography, and integrated new Bayesian estimates of historic gene flow. Our compilation shows how the export of Southern Ocean and Mediterranean waters after the Younger Dryas 11.6 kyr ago simultaneously triggered two dispersal events in the western and eastern Atlantic respectively. Each pathway injected larvae from refugia into ocean currents powered by a re-invigorated AMOC that led to the fastest postglacial range expansion ever recorded, covering 7500 km in under 400 years. In addition to its role in modulating global climate, our study illuminates how the ocean conveyor creates broad geographic ranges that lower extinction risk in the deep sea. (C) 2014 The Authors. Published by Elsevier Ltd.

引用

页码：8 / 16

页数：9

共 59 条

[1] Genetic structure and history of populations of the deep-sea fish Helicolenus dactylopterus (Delaroche, 1809) inferred from mtDNA sequence analysis [J].