Next Article in Journal
Residential Water Demand in a Mexican Biosphere Reserve: Evidence of the Effects of Perceived Price
Next Article in Special Issue
Restoration of Shallow Lakes in Subtropical and Tropical China: Response of Nutrients and Water Clarity to Biomanipulation by Fish Removal and Submerged Plant Transplantation
Previous Article in Journal
Modeling the Hydropower–Food Nexus in Large River Basins: A Mekong Case Study
Previous Article in Special Issue
The Effect of Artificial Recharge on Hydrochemistry: A Comparison of Two Fluvial Gravel Pit Lakes with Different Post-Excavation Uses in The Netherlands
Article Menu

Export Article

Open AccessArticle
Water 2016, 8(10), 427; doi:10.3390/w8100427

Long-Term Trends and Temporal Synchrony in Plankton Richness, Diversity and Biomass Driven by Re-Oligotrophication and Climate across 17 Danish Lakes

1
Freshwater Ecology Group, Department of Bioscience, Aarhus University, Silkeborg 8600, Denmark
2
Section for Ecoinformatics and Biodiversity, Department of Bioscience, Aarhus University, Aarhus 8000, Denmark
3
Institute of Marine Sciences, Middle East Technical University, Erdemli, Mersin 33340, Turkey
4
Greenland Climate Research Centre, Greenland Institute of Natural Resources, Nuuk 3900, Greenland
5
Sino-Danish Centre for Education and Research, Beijing 100190, China
6
Arctic Research Centre, Aarhus University, Aarhus 8600, Denmark
*
Author to whom correspondence should be addressed.
Academic Editor: Wayne O’Connor
Received: 27 August 2016 / Revised: 20 September 2016 / Accepted: 22 September 2016 / Published: 28 September 2016
(This article belongs to the Special Issue Lake Restoration and Management in a Climate Change Perspective)
View Full-Text   |   Download PDF [9322 KB, uploaded 28 September 2016]   |  

Abstract

A two-decade (1989–2008) time series of lake phyto- and zooplankton, water characteristics and climate in 17 Danish lakes was analysed to examine the long term changes and the effects of lake restoration efforts. The analyses of the pair-wise correlations across time series revealed a strong synchrony in climatic variables among the lakes. A significant, but weak increase in air temperature was observed and resulted in a corresponding increase in surface water temperature only in summer. Lake physico-chemical variables had weaker synchrony than climatic variables. Synchrony in water temperature and stratification was stronger than lake chemistry as the former is mostly affected by atmospheric energy flux. Synchrony in the taxonomic richness of the plankton groups and phytoplankton biomass was apparent, to a similar degree as observed for lake chemistry. The synchrony and the temporal trends in lake chemistry and plankton were more pronounced for the lakes with strong re-oligotrophication. Phytoplankton biomass decreased and plankton richness increased in these lakes, with a shift from Chlorophyta dominance towards more heterogeneous phytoplankton communities. Notably, a widespread significant positive trend in plankton richness was observed not only in lakes with strong re-oligotrophication but across all lakes. The widespread increase in plankton richness coincided with widespread decrease in phosphate and total nitrogen concentrations, as well as with the trends in climate indicating a likely joint effect of nutrient reduction and climate in driving lake plankton. However, temporal changes and synchrony as well as the recovery of richness and composition of lake plankton more coherently corresponded with the nutrient loading reduction across the Danish landscape, while the role of climate control of the lake plankton was less pronounced. View Full-Text
Keywords: temporal coherence; zooplankton; phytoplankton; re-oligotrophication; lake recovery; lake restoration; plankton diversity temporal coherence; zooplankton; phytoplankton; re-oligotrophication; lake recovery; lake restoration; plankton diversity
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Özkan, K.; Jeppesen, E.; Davidson, T.A.; Bjerring, R.; Johansson, L.S.; Søndergaard, M.; Lauridsen, T.L.; Svenning, J.-C. Long-Term Trends and Temporal Synchrony in Plankton Richness, Diversity and Biomass Driven by Re-Oligotrophication and Climate across 17 Danish Lakes. Water 2016, 8, 427.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top