Heterogeneity and scaling of photosynthesis, respiration, and nitrogen uptake in three Atlantic Rainforest streams

• Published in: Ecosphere (Washington, D.C) Vol. 8; no. 9
• Main Authors: Tromboni, Flavia, Dodds, Walter K., Neres‐Lima, Vinicius, Zandonà, Eugenia, Moulton, Timothy P.
• Format: Journal Article
• Language: English
• Published: Washington John Wiley & Sons, Inc 01.09.2017
• Subjects: 15N; Ammonium; Aquatic plants; autotrophic; biofilm; Biofilms; Canopies; chambers; Creeks & streams; Dissolved oxygen; ecosystem respiration; Ecosystems; Epilithon; Experiments; Floods; Food webs; forest canopy; Heterogeneity; heterotrophic; hydrodynamics; hyporheic uptake; leaves; macrophytes; Metabolism; nitrate; nitrates; Nitrogen; nitrogen content; Nutrient uptake; Nutrients; OTIS‐P; oxygen; Photosynthesis; Primary production; primary productivity; rain forests; Rainforests; Respiration; River ecology; Sediments; stable isotopes; Storage; Streams; Watersheds; whole‐stream; Brazil; Atlantic Forest; Rio de Janeiro Brazil

Leaves, epilithon, macrophytes, and fine benthic organic material are central ecosystem compartments to food webs and mediate nutrient fluxes in streams. Most estimates of gross primary production (GPP) and ecosystem respiration (ER) are made at a reach scale, averaging across compartments. Thus, th...