Warming advances virus population dynamics in a temperate freshwater plankton community

Thijs Frenken, Corina P. D. Brussaard, Mandy Velthuis, Ralf Aben, Garabet Kazanjian, Sabine Hilt, Sarian Kosten, Edwin T. H. M. Peeters, Lisette N. Senerpont Domis, Susanne Stephan, Ellen van Donk, Dedmer B. Van de Waal
2020 Limnology and Oceanography Letters  
Scientific Significance Statement Viruses are the most abundant biological entities on earth and play an important role in carbon and nutrient cycling in aquatic ecosystems. Laboratory studies have shown that warming can stimulate phytoplankton growth, and thereby trigger an increased production of their viruses. It remains unclear how warming will affect host-virus dynamics in more complex natural plankton communities over longer time periods, particularly in freshwater systems. Our results
more » ... ems. Our results demonstrated for the first time that warming advances the timing of virus population dynamics, but neither changed peak nor time-integrated number of viruses. Although warming may not result in a stronger viral control of natural bacterial and phytoplankton communities, it can alter timing of host-virus interactions, and thus the timing of carbon and nutrient recycling. Viruses are important drivers in the cycling of carbon and nutrients in aquatic ecosystems. Since viruses are obligate parasites, their production completely depends on growth and metabolism of hosts and therefore can be affected by climate change. Here, we investigated if warming (+4 C) can change the outcome of viral infections in a natural freshwater virus community over a 5-month period in a mesocosm experiment. We monitored dynamics of viruses and potential hosts. Results show that warming significantly advanced the early
doi:10.1002/lol2.10160 fatcat:6q4o3oh3v5fvpoz7gnzlhpaanq