Physical and biogeochemical drivers of multi-year isoscape in the California upwelling system.

ABSTRACT: Stable isotopes of carbon (δ¹³C) and nitrogen (δ¹⁵N) are commonly employed to reconstruct past change in marine ecosystems and nutrient cycling. However, multiple biogeochemical and physical drivers govern spatiotemporal variability of these isotopic signals, particularly in dynamic coastal systems, complicating interpretation. Here, we coupled a modern multi-year (2010-2019) δ¹³C and δ¹⁵N isoscape record from intertidal mussels (Mytilus californianus) with high-resolution ocean model output and satellite chlorophyll-a observations in the California Current System (32°-43° N) to identify major drivers of isotopic variability. Our results show that spatial variations in δ¹³C are largely related to primary production, whereas spatial δ

SUBMITTER: Vokhshoori NL 

PROVIDER: S-EPMC11681001 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature