Functional diversity of crustacean zooplankton communities: towards a trait‐based classification. <i>Freshwater Biology</i>, 52, 796–813. <scp>DOI</scp>: 10.1111/j.1365‐2427.2007.01733.x

Abstract. Excess nutrient loading into ponds and shallow lakes can lead to undesirable algal growth and a shift to a turbid state. Previous work has suggested that such an ecosystem transition may be mediated by the biotic constituents of the habitat and food web; however, earlier experiments have been conducted at coarse temporal resolution and have typically used a single initial density of macrophytes, a key structural component of ponds and shallow lakes. To address these gaps, we tested the hypotheses that experimental ponds with lower macrophyte densities and more rapid increases in nutrient loading would shift to phytoplankton dominance, whereas higher macrophyte densities and slower, lower concentration nutrient inputs would maintain a clear state. Ponds containing plankton and juvenile fish were assigned to treatments with none, low, or high macrophyte densities, and weekly, high or biweekly (i.e., fortnightly), low nutrient inputs. Using additive mixed-effects models, we demonstrated that temporal trajectories of phytoplankton biomass were explained by macrophyte density in interaction with biomass of important zooplankton grazers (Bosminidae, Sididae, and Daphniidae), as well as with pH and time. Phytoplankton biomass followed a convex unimodal trajectory in ponds with no or low macrophytes (muted in the latter), and minimal increases in high macrophyte treatments. Declines in phytoplankton attributable to top-down control likely freed resources for periphyton and metaphyton, which subsequently became abundant in ponds without and with macrophytes, respectively. Our results demonstrate that high densities of macrophytes, combined with herbivory and competition for light between phytoplankton and metaphyton, enhance resilience of the clear water state to the undesirable effects associated with eutrophication.

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Shifts in algal dominance in freshwater experimental ponds across differing levels of macrophytes and nutrients

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Functional diversity of crustacean zooplankton communities: towards a trait‐based classification. Freshwater Biology, 52, 796–813. DOI: 10.1111/j.1365‐2427.2007.01733.x

Abstract: CorrigendumFunctional diversity of crustacean zooplankton communities: towards a trait-based classification.

Cited by 4 publications

References 108 publications

Shifts in algal dominance in freshwater experimental ponds across differing levels of macrophytes and nutrients

Shifts in algal dominance in freshwater experimental ponds across differing levels of macrophytes and nutrients

Extensive Carbon Contribution of Inundated Terrestrial Plants to Zooplankton Biomass in a Eutrophic Lake

Differential interference effects of thermal pollution on the induced defense of different body-sized cladocerans

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