The broad footprint of climate change from genes to biomes to people

Science, Journal Year: 2016, Volume and Issue: 354(6313)

Published: Nov. 11, 2016

Accumulating impacts Anthropogenic climate change is now in full swing, our global average temperature already having increased by 1°C from preindustrial levels. Many studies have documented individual of the changing that are particular to species or regions, but accumulating and being amplified more broadly. Scheffers et al. review set been observed across genes, species, ecosystems reveal a world undergoing substantial change. Understanding causes, consequences, potential mitigation these changes will be essential as we move forward into warming world. Science , this issue p. 10.1126/science.aaf7671

Language: Английский

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Mountain lakes: Eyes on global environmental change

Global and Planetary Change, Journal Year: 2019, Volume and Issue: 178, P. 77 - 95

Published: April 11, 2019

Language: Английский

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Storm impacts on phytoplankton community dynamics in lakes

Global Change Biology, Journal Year: 2020, Volume and Issue: 26(5), P. 2756 - 2784

Published: March 5, 2020

Abstract In many regions across the globe, extreme weather events such as storms have increased in frequency, intensity, and duration due to climate change. Ecological theory predicts that should large impacts on ecosystem structure function. High winds precipitation associated with can affect lakes via short‐term runoff from watersheds physical mixing of water column. addition, connected rivers streams will also experience flushing high flow rates. Although we a well‐developed understanding how wind alter lake processes some aspects biogeochemical cycling, our mechanistic emergent responses phytoplankton communities is poor. Here provide comprehensive synthesis identifies interact watershed attributes their antecedent conditions generate changes chemical environments. Such restructure dynamics, well result altered ecological function (e.g., carbon, nutrient energy cycling) short‐ long‐term. We summarize current storm‐induced identify knowledge gaps systematic review literature, suggest future research directions gradient types environmental conditions.

Language: Английский

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Lakes in Hot Water: The Impacts of a Changing Climate on Aquatic Ecosystems

BioScience, Journal Year: 2022, Volume and Issue: 72(11), P. 1050 - 1061

Published: July 18, 2022

Abstract Our planet is being subjected to unprecedented climate change, with far-reaching social and ecological repercussions. Below the waterline, aquatic ecosystems are affected by multiple climate-related anthropogenic stressors, combined effects of which poorly understood rarely appreciated at global stage. A striking consequence change on that many experiencing shorter periods ice cover, as well earlier longer summer stratified seasons, often result in a cascade environmental consequences, such warmer water temperatures, alterations lake mixing levels, declines dissolved oxygen, increased likelihood cyanobacterial algal blooms, loss habitat for native cold-water fisheries. The repercussions changing include impacts freshwater supplies, quality, biodiversity, ecosystem benefits they provide society.

Language: Английский

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Aerosol-weakened summer monsoons decrease lake fertilization on the Chinese Loess Plateau

Nature Climate Change, Journal Year: 2017, Volume and Issue: 7(3), P. 190 - 194

Published: Feb. 27, 2017

Language: Английский

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The world’s largest High Arctic lake responds rapidly to climate warming

Nature Communications, Journal Year: 2018, Volume and Issue: 9(1)

Published: March 29, 2018

Abstract Using a whole-watershed approach and combination of historical, contemporary, modeled paleolimnological datasets, we show that the High Arctic’s largest lake by volume (Lake Hazen) has succumbed to climate warming with only ~1 °C relative increase in summer air temperatures. This deepened soil active layer triggered large mass losses from watershed’s glaciers, resulting ~10 times delivery glacial meltwaters, sediment, organic carbon legacy contaminants Lake Hazen, >70% decrease water residence time, near certainty ice-free conditions. Concomitantly, community assemblage diatom primary producers shifted dramatically declining ice cover, shoreline benthic open-water planktonic species, physiological condition fish species lake, Arctic Char, declined significantly. Collectively, these changes place Hazen biogeochemical, limnological ecological regime unprecedented within past ~300 years.

Language: Английский

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Under the radar: long-term perspectives on ecological changes in lakes

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2019, Volume and Issue: 286(1906), P. 20190834 - 20190834

Published: July 10, 2019

Aquatic ecosystems are constantly changing due to natural and anthropogenic stressors. When dealing with such ‘moving targets’, one of the greatest challenges faced by scientists, managers policy makers is use appropriate time scales for environmental assessments. However, most aquatic systems lack monitoring data, if a programme does exist, rarely have data been collected more than few years. Hence, it often difficult or impossible determine nature timing ecosystem changes based on these short-term datasets. Furthermore, as assessments typically performed after problem identified, critical regarding pre-disturbance (or reference) conditions available. Here, I summarize some recent studies employing lake sediment analyses (i.e. palaeolimnology) that provided retrospective emerging slowly innocuously ‘under radar’. My examples include identification legacy effects acid rain logging, namely long-term declines in calcium concentrations softwater lakes, which led significant repercussions services. then show past trajectories aerial pollution from burgeoning oil sands operations western Canada can be tracked using proxies preserved dated cores, how used relative contributions versus industrial sources pollutants. conclude reviewing palaeolimnological linked climate change proliferation harmful blue-green algal (cyanobacterial) blooms, even without addition limiting nutrients. Collectively, effective management, particularly incremental stressors, requires temporal sampling windows not readily available standard monitoring, but supplemented high-resolution analyses.

Language: Английский

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Visible spectroscopy reliably tracks trends in paleo-production

Journal of Paleolimnology, Journal Year: 2016, Volume and Issue: 56(4), P. 253 - 265

Published: Oct. 7, 2016

Language: Английский

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A 6900-year history of landscape modification by humans in lowland Amazonia

Quaternary Science Reviews, Journal Year: 2016, Volume and Issue: 141, P. 52 - 64

Published: April 14, 2016

Language: Английский

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Paleolimnology of thermokarst lakes: a window into permafrost landscape evolution

Arctic Science, Journal Year: 2016, Volume and Issue: 3(2), P. 91 - 117

Published: Nov. 23, 2016

Widespread across northern permafrost landscapes, thermokarst ponds and lakes provide vital wildlife habitat play a key role in biogeochemical processes. Stored the sediments of these typically shallow dynamic waterbodies are rich sources paleoenvironmental information whose potential has not yet been fully exploited, likely because concerns over stratigraphic preservation challenges to develop reliable sediment core chronologies. Here, we present an overview recently derived informative paleolimnological reconstructions based on multiparameter analysis archives from aquatic basins. We include examples Canadian North, Alaska, Siberia that illustrate their value for providing insights into temporal patterns lake inception, catchment erosion, productivity, hydrological evolution, landscape disturbances. Although captured our survey, emerging research directions focused carbon accumulation, storage, balance hold much promise contributing global climate change science.

Language: Английский

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