| Title | Acceleration of cyanobacterial dominance in north temperate-subarctic lakes during the Anthropocene |
| Abstract | Increases in atmospheric temperature and nutrients from land are thought to be promoting the expansion of harmful cyanobacteria in lakes worldwide, yet to date there has been no quantitative synthesis of long-term trends. To test whether cyanobacteria have increased in abundance over the past ~ 200 years and evaluate the relative influence of potential causal mechanisms, we synthesised 108 highly resolved sedimentary time series and 18 decadal-scale monitoring records from north temperate-subarctic lakes. We demonstrate that: (1) cyanobacteria have increased significantly since c. 1800 ce, (2) they have increased disproportionately relative to other phytoplankton, and (3) cyanobacteria increased more rapidly post c. 1945 ce. Variation among lakes in the rates of increase was explained best by nutrient concentration (phosphorus and nitrogen), and temperature was of secondary importance. Although cyanobacterial biomass has declined in some managed lakes with reduced nutrient influx, the larger spatio-temporal scale of sedimentary records show continued increases in cyanobacteria throughout the north temperate-subarctic regions. |
| Source | Ecology letters (Print) 18 (4), pp. 375–384 |
| Keywords | AnthropoceneClimate changeCyanobacteriaEutrophicationLong-term trendsMeta-analysisPaleolimnologyRegression tree |
| Journal | Ecology letters (Print) |
| Editor | Blackwell Science,, Oxford, Regno Unito |
| Year | 2015 |
| Type | Articolo in rivista |
| DOI | 10.1111/ele.12420 |
| Authors | Taranu, Zofia E.; Taranu, Zofia E.; Taranu, Zofia E.; Gregory-Eaves, Irene; Gregory-Eaves, Irene; Leavitt, Peter R.; Bunting, Lynda; Buchaca, Teresa; Catalan, Jordi; Catalan, Jordi; Domaizon, Isabelle; Guilizzoni, Piero; Lami, Andrea; Mcgowan, Suzanne; Mcgowan, Suzanne; Moorhouse, Heather; Morabito, Giuseppe; Pick, Frances R.; Stevenson, Mark A.; Thompson, Patrick L.; Vinebrooke, Rolf D. |
| Text | 346892 2015 10.1111/ele.12420 Scopus 2 s2.0 84925624357 Anthropocene Climate change Cyanobacteria Eutrophication Long term trends Meta analysis Paleolimnology Regression tree Acceleration of cyanobacterial dominance in north temperate subarctic lakes during the Anthropocene Taranu, Zofia E.; Taranu, Zofia E.; Taranu, Zofia E.; Gregory Eaves, Irene; Gregory Eaves, Irene; Leavitt, Peter R.; Bunting, Lynda; Buchaca, Teresa; Catalan, Jordi; Catalan, Jordi; Domaizon, Isabelle; Guilizzoni, Piero; Lami, Andrea; Mcgowan, Suzanne; Mcgowan, Suzanne; Moorhouse, Heather; Morabito, Giuseppe; Pick, Frances R.; Stevenson, Mark A.; Thompson, Patrick L.; Vinebrooke, Rolf D. McGill University; McGill University; University of Regina; Centre for Advanced Studies of Blanes CEAB CSIC ; Cerdanyola del Valles; INRA UMR 42 CARRTEL Alpine Center for Research on Trophic Networks of Limnetic Ecosystems; Consiglio Nazionale delle Ricerche; University of Nottingham; The University of Nottingham Malaysia Campus; University of Ottawa, Canada; University of Alberta; Universite de Montreal Increases in atmospheric temperature and nutrients from land are thought to be promoting the expansion of harmful cyanobacteria in lakes worldwide, yet to date there has been no quantitative synthesis of long term trends. To test whether cyanobacteria have increased in abundance over the past 200 years and evaluate the relative influence of potential causal mechanisms, we synthesised 108 highly resolved sedimentary time series and 18 decadal scale monitoring records from north temperate subarctic lakes. We demonstrate that 1 cyanobacteria have increased significantly since c. 1800 ce, 2 they have increased disproportionately relative to other phytoplankton, and 3 cyanobacteria increased more rapidly post c. 1945 ce. Variation among lakes in the rates of increase was explained best by nutrient concentration phosphorus and nitrogen , and temperature was of secondary importance. Although cyanobacterial biomass has declined in some managed lakes with reduced nutrient influx, the larger spatio temporal scale of sedimentary records show continued increases in cyanobacteria throughout the north temperate subarctic regions. 18 Published version http //www.scopus.com/record/display.url eid=2 s2.0 84925624357 origin=inward Articolo 2015_Ecology_Letters_18_4_375_384.pdf Articolo in rivista Blackwell Science, 1461 023X Ecology letters Print Ecology letters Print Ecol. lett. Print Ecology letters. Print piero.guilizzoni GUILIZZONI PIERO giuseppe.morabito MORABITO GIUSEPPE andrea.lami LAMI ANDREA |
