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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We examined the contemporaneous responses of N2 fixation and denitrification to inorganic nitrogen-ennched runoff in 2 lntertldal mlcroblal mats in Tomales Bay (California, USA) Prior to runoff N, fixation rates averaged 3 mm01 N m-' d.' Denltrificatlon rates were lower, corresponding to 0 to 25 % of N2 flvatlon rates After the initiation of runoff N2 flxatlon rates decreased approach~ng zero at both sites In contrast denltrlflcation rates Increased by an order of magnltude We developed a simple model to examine the magnltude of N removal from creek water by mat denltnficatlon before, dunng and after runoff Model results show that during peak runoff N removal was llmlted by the residence time of creek water in the intertidal region As runoff volumes decreased and residence tlmes increased N removal became llmited by the supply of organlc matter Our results illustrated the r a p ~ d metabolic adaptation of m ~ c r o b ~ a l mats to altered N fluxes Changes occurring in the mat N cycling after the initiation of runotf led to 2 fundamental ecological changes (1) mats became sinks for rather than sources of futed N and (2) denitnfication became limited by the availability of organic carbon rather than nitrate

Contemporaneous nitrogen fixation and denitrification in intertidal microbial mats: rapid response to runoff events