About this Research Topic
Meromictic lakes provide unique opportunities to conduct research exploring the interplay of elemental cycling across redox gradients. Redox gradients were thought to have existed in the Earth’s oceans from the Neoarchean through the Proterozoic, spanning nearly half of Earth history. As such, meromictic systems are modern natural laboratories that provide windows into the past. Redox stratification has also become a growing problem in freshwater lakes and reservoirs impacted by cyanobacterial blooms, resulting in seasonal anoxia and dramatic changes in element cycling and microbial community composition.
In the summer of 2017 we will be holding a meeting focusing on redox-stratified systems. Our workshop will include biogeochemical sampling and characterization of Fayetteville Green Lake (FGL), a meromictic lake in Fayetteville, N.Y. The first known published scientific research on a meromictic lake in North America was conducted at FGL. It is a redox-stratified meromictic lake, with an oxic mixolimnion from 0 to 15 m, a chemocline from 15 to ~21 m, a redoxcline at ~21 m, and a euxinic monimolimnion from ~21 to 53 m. The bottom is covered with meters of sediments resulting from the deposition of diatom frustules, calcium crystals, organic matter, and framboidal pyrite from the water column as well as washed in soil particulates and sediments sloughed off from the steep sides of the lake. After nearly 100 years of research, FGL has become one of the most intensely studied lakes in the world but recent work has shown that there is still much to be learned.
This Research Topic would be a place to publish collaborative insights gained during the workshop. However, we also welcome a broad range of contributions from geochemists, microbiologists, geobiologists, geologists and limnologists that study redox-stratified systems located around the world. The goal of this collection is to present the state of science for FGL and redox stratified systems.
Keywords: Redox gradients, geochemistry, microbiology, geobiology, stratified systems
Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.