【Trophic Interactions between Anadromous Juvenile Alewife (Alosa pseudoharengus) and Cyanobacterial Populations in a Shallow Mesotrophic Pond】

Read full article: https://tinyurl.com/y6nclmxk

Article by Nancy J. Leland, et al., from University of New Hampshire (USA), etc.

A frequently studied #trophic_spectrum within lakes involves planktivore-zooplankton-phytoplankton—nutrient source interactions. Phytoplankton populations exhibit periodicity in response to abiotic and biotic variables. The composition of cyanobacterial populations has been shown to undergo seasonal shifts in response to light, temperature and nutrient ratios. This study examined a freshwater aquatic system with populations of #cyanobacteria and anadromous Alosa pseudoharengus, with a particular emphasis on the impacts of the juvenile stage on the lake ecology, prior to their outmigration. This study confirmed that the presence of planktivorous juvenile #Alosa_pseudoharengus in Lower Mill Pond altered the trophic spectrum, where compensation and a cascade were observed. The cascade manifested as an increase in the biomass of edible and inedible cyanobacteria, creating successive “bloom” conditions.