Links between fish abundance and ocean biogeochemistry as recorded in marine sediments.

ABSTRACT: Fish populations are linked to ocean biogeochemistry by their reliance on primary production for food, and dissolved oxygen to breathe. It is also possible that marine fish modify biogeochemical dynamics, as do freshwater fish, through top-down trophic cascades, but there has been relatively little consideration of this possibility. This lack of consideration may reflect a lack of importance; alternatively, it may simply reflect the lack of appropriate observations with which to constrain such relationships. Here, we draw attention to the potential use of marine sediments as long-term simultaneous monitors of both fish abundance and marine biogeochemical dynamics. We compile published sediment proxy records of fish abundance from the west coasts of the Americas, and compare them with bioge

SUBMITTER: Kavanagh L 

PROVIDER: S-EPMC6070179 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature