Scaling relationships among drivers of aquatic respiration from the smallest to the largest freshwater ecosystems

Inland Waters
By: , and 

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Abstract

To address how various environmental parameters control or constrain planktonic respiration (PR), we used geometric scaling relationships and established biological scaling laws to derive quantitative predictions for the relationships among key drivers of PR. We then used empirical measurements of PR and environmental (soluble reactive phosphate [SRP], carbon [DOC], chlorophyll a [Chl-a)], and temperature) and landscape parameters (lake area [LA] and watershed area [WA]) from a set of 44 lakes that varied in size and trophic status to test our hypotheses. We found that landscape-level processes affected PR through direct effects on DOC and temperature and indirectly via SRP. In accordance with predictions made from known relationships and scaling laws, scale coefficients (the parameter that describes the shape of a relationship between 2 variables) were found to be negative and have an absolute value 1, others <1). We also found evidence of a significant relationship between temperature and SRP. Because our dataset included measurements of respiration from small pond catchments to the largest body of freshwater on the planet, Lake Superior, these findings should be applicable to controls of PR for the great majority of temperate aquatic ecosystems.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Scaling relationships among drivers of aquatic respiration from the smallest to the largest freshwater ecosystems
Series title Inland Waters
DOI 10.5268/IW-6.1.839
Volume 6
Issue 1
Year Published 2016
Language English
Publisher Freshwater Biological Association
Publisher location Ambleside, Cumbria, UK
Contributing office(s) Wetland and Aquatic Research Center
Description 10 p.
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Inland Waters
First page 1
Last page 10
Online Only (Y/N) N
Additional Online Files (Y/N) N