30 Climate Change Impacts on Carbon and Nutrient Cycling in Wetland Soils

Friday, 5 May 2023
1:30 PM - 5:30 PM
EC 311

ORGANIC CARBON-MINERAL-NUTRIENT INTERACTIONS IN WETLAND SOILS NEAR LAKE MICHIGAN

Paper number: 30-7
Program: Theme Sessions
Time: 3:25 PM – 3:45 PM

Authors

Abstract

The coast of Lake Michigan provides a unique habitat for living organisms under a changing climate. The shoreline of Lake Michigan hosts a variety of soil ecosystems including beach sediments, sand dunes, interdunal wetlands, and forest soils. The biogeochemical cycles of carbon and nutrients such as phosphorus drive the metabolism in the soil biota, but what are the key environmental/geochemical factors for these biogeochemical processes is not well-known. In this study, we collected soil samples from the shoreline of Lake Michigan spanning over 200 km, and we measured the concentrations and spatial distribution of dissolved organic carbon and nutrients in the samples. We also examined the mineral effects on organic carbon degradation and phosphorous bioavailability, and a strong interaction between organic carbon, minerals, and nutrients was observed. The findings suggest an important role of minerals in controlling organic carbon decomposition and phosphorous cycling in coastal environments, which may provide additional insights into understanding the biogeochemical processes in wetland ecosystems.

Geological Society of America Abstracts with Programs. Vol. 55, No. 3

doi: 10.1130/abs/2023NC-386825

© Copyright 2023 The Geological Society of America (GSA), all rights reserved. Permission is hereby granted to the author(s) of this abstract to reproduce and distribute it freely, for noncommercial purposes. Permission is hereby granted to any individual scientist to download a single copy of this electronic file and reproduce up to 20 paper copies for noncommercial purposes advancing science and education, including classroom use, providing all reproductions include the complete content shown here, including the author information. All other forms of reproduction and/or transmittal are prohibited without written permission from GSA Copyright Permissions.