Light and temperature mediate algal stimulation of heterotrophic activity on decomposing leaf litter

• Published in: Freshwater biology Vol. 65; no. 7; pp. 1210 - 1222
• Main Authors: Pope, Cody A., Halvorson, Halvor M., Findlay, Robert H., Francoeur, Steven N., Kuehn, Kevin A.
• Format: Journal Article
• Language: English
• Published: Oxford Wiley Subscription Services, Inc 01.07.2020
• Subjects: Algae; algal–heterotroph interactions; Aquatic plants; Bacteria; beta-glucosidase; biofilm; climate change; Darkness; Decomposition; detritus; Environmental gradient; Enzymatic activity; Enzyme activity; Enzymes; Freshwater plants; Fungi; global change; Glucosidase; Gradients; Heterotrophic organisms; Heterotrophs; Heterotrophy; High temperature; Leaf litter; Light; Light levels; microbial heterotrophs; monophenol monooxygenase; periphyton; Phenoloxidase; Phenols; Photosynthesis; plant litter; Priming; priming effects; Stimulation; Temperature; Temperature gradients; Typha domingensis; xylan 1,4-beta-xylosidase; Xylosidase

Recent evidence suggests that periphytic algae stimulate plant litter heterotrophs (fungi and bacteria) in the presence of light, but few studies have tested whether this stimulation varies across gradients of light, which may covary with temperature. We exposed field‐conditioned Typha domingensis l...