Eutrophication-like response to climate warming: an analysis of Lago Maggiore (N. Italy) zooplankton in contrasting years

Abstract

Global

Effects of climate change on zooplankton community interactions in an Alaskan lake

“…These results are consistent with similar analyses in other large lakes, where external temperature effects overshadowed intrinsic community interactions [17]. Like other poikilothermic organisms, the fundamental physiological processes of zooplankton are tightly linked to the temperature of their environment [43][44][45] and even slight increases in temperature can drive increases in density [46] and production [24,47,48]. Zooplankton, especially the cladocerans, and Daphnia in particular, have important trophic functions in freshwater food webs [49][50][51].…”

Unexpected increases in rotifer resting egg abundances during the period of contamination of Lake Orta

“…Monogonont rotifers represent a large fraction of plankton diversity in lakes (Pace and Orcutt, 1981;Visconti et al, 2008), and they are commonly responsible for a springsummer zooplankton population maximum (Orcutt and Pace, 1984;van Dijk and van Zanten, 1995;Yoshida et al, 2001). In the present study, we quantified changes in richness, diversity and abundance of rotifer resting eggs N o n -c o m m e r c i a l u s e o n l y (RREs) in a sediment core of Lake Orta, Italy.…”

Optical remote sensing of lakes: an overview on Lake Maggiore

“…Response of plankton communities to oligotrophication after lake restoration included a gradual increase in the number of phytoplankton taxonomic units and in cell density along with a decrease of average cell size as well as rearrangements in the functional structures of planktonic assemblages and changes of the trophic relationships (Manca and Ruggiu, 1998). During lake oligotrophication the role of climatic constraints became increasingly important: over a general increasing mean water temperature trend (Ambrosetti and Barbanti, 1999), the most recent studies pointed out the response of planktonic organisms to water temperature changes (Visconti et al, 2008;Salmaso et al, 2012), as well as modifications of the phytoplankton assemblage, including the recent unexpected cyanobacterial blooms driven by extreme climatic events (Bertoni et al, 2007;.…”