English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Rising ocean temperature is expected to change the balance between production\udand degradation of organic matter due to different temperature sensitivities of auto- and heterotrophic\udprocesses. Copepods are the most prominent zooplankton group, and elevated temperature\udincreases their growth and grazing rates. So far, it is unknown to what extent copepods affect\udthe partitioning and stoichiometry of organic matter in a warmer surface ocean. We therefore\udconducted a mesocosm experiment with 3 copepod densities and 2 temperature scenarios to\uddetermine effects on the pools of dissolved and particulate organic matter and their C:N:P ratios.\udHere we show that particulate organic C (POC) concentrations decreased with increasing copepod\udabundance. This effect was more pronounced at elevated temperature, yielding a decrease in\udthe POC to particulate nitrogen ratio (POC:PN) from 26 to 13 and in the POC:particulate organic\udphosphorus (POP) ratio from 567 to 257, from low to high copepod density. Dissolved organic carbon\ud(DOC) accumulation was positively affected by temperature. However, increasing copepod\udabundance decreased the accumulation of DOC at elevated temperature. Copepod grazing and\udegestion enhanced the recycling of N and P, thereby increasing the availability of these nutrients\udfor autotrophs. In concert with temperature-induced shifts in the phytoplankton community composition\udand size, changes in copepod abundance may therefore have contributed to altering the\udelemental composition of seston. Our findings suggest combined effects of zooplankton grazing\udand temperature on the composition and recycling of organic matter that should be taken into\udaccount when simulating biogeochemical cycles in a future ocean

Organic matter partitioning and stoichiometry in response to rising water temperature and copepod grazing