Climate change and plankton phenology in freshwater: current trends and future commitments

Abstract

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Toward a phenological mismatch in estuarine pelagic food web?

“…Five indicators usual in the literature about phenology were calculated at each iteration of the model (see review in [16,60]). We first computed the central tendency (T s,j ) of each species s distribution during period j.…”

“…The synchronization between biological processes and seasonal environmental fluctuations has crucial importance for individuals’ fitness, because most species generally rely on limited suitable environmental windows [13]. Most of these phenological events at the species scale are however particularly sensitive to climate change [3,14–16]. In particular, most aquatic animals are ectothermic and their biology and ecology are therefore driven by water temperature.…”

Inter-annual climate variability and zooplankton: applying teleconnection indices to two deep subalpine lakes in Italy

“…Climate has increasingly been regarded as a major driver of changes in population phenology, directly and indirectly influencing between-year variability of seasonal cycles in terrestrial, marine and freshwater organisms (Winder and Schindler, 2004;Visser and Both 2005;Menzel et al, 2006;Richardson, 2006;Vadadi-Fülöp and Hufnagel, 2014).…”

Phenology of Daphnia in a Northern Italy pond during the weather anomalous 2014

“…Peak density level may be positively correlated with increase of nutrient concentration and of food sources (Schalau et al, 2008;Manca et al, 2015). Hatching cues and associated emergence dynamics from resting stage have been given minor attention but winter warming may alter the interaction between photoperiod and temperature, and have direct, different effects on the emerging population of Daphnia (Vadadi-Fülöp and Hufnagel, 2014). In our case, earlier seasonal timing of Daphnia should be linked to cues for hatching of resting eggs (induced by late winter warming) (Chen and Folt, 2002;Gerten and Andrian, 2002).…”

“…Growing evidence for phenological changes of plankton in response to climate change come from empirical, experimental and theoretical research over recent years (Edward and Richardson, 2004;Winder and Schindler, 2004;Hays et al, 2005;Visser and Both, 2005;Richardson, 2008;Vadadi-Fülöp and Hufnagel, 2014). Zooplankton is a key component of aquatic food webs and the climate change may cause different adverse effects on species diversity by means of elimination of sensitive species, replacement of sensitive species/strains by less sensitive ones, shifts in food-web interactions; acclimation of species/strains to stress, selection of tolerant genotypes, outcome of predator-prey interactions by altering the ability of prey to detect predators or to implement defensive responses both in marine and freshwater habitats (Riessen et al, 2012;Vadadi-Fülöp et al, 2012;VadadiFülöp and Hufnagel, 2014).…”