Project: Latitudinal and depth-related contrasts in enzymatic capabilities of pelagic microbial communities: Predictable patterns in the ocean?

Acronym/Short Name:Patterns of activities
Project Duration:2013-08 - 2017-07
Geolocation:Atlantic Ocean, Arctic Ocean, Pacific Ocean, Greenland

Description

NSF Award Abstract:
Heterotrophic microbial communities are key players in the marine carbon cycle, transforming and respiring organic carbon, regenerating nutrients, and acting as the final filter in sediments through which organic matter passes before long-term burial. Microbially-driven carbon cycling in the ocean profoundly affects the global carbon cycle, but key factors determining rates and locations of organic matter remineralization are unclear. In this study, researchers from the University of North Carolina at Chapel Hill will investigate the ability of pelagic microbial communities to initiate the remineralization of polysaccharides and proteins, which together constitute a major pool of organic matter in the ocean. Results from this study will be predictive on a large scale regarding the nature of the microbial response to organic matter input, and will provide a mechanistic framework for interpreting organic matter reactivity in the ocean.

Broader Impacts: This study will provide scientific training for undergraduate and graduate students from underrepresented groups. The project will also involve German colleagues, thus strengthening international scientific collaboration.


DatasetLatest Version DateCurrent State
Hydrolysis rates from bulk water sample incubations from R/V Endeavor cruise EN556 in 20152023-03-14Final no updates expected
Measurements of peptidase and glucosidase activities in large volume mesocosm incubations on RV/Endeavor EN584, July 2016 (Patterns of activities project)2022-12-07Final no updates expected
Microbial enzyme activities: glucosidase and peptidase activities of gravity filtered seawater samples from the RV\Sonne cruise SO248 in the South and North Pacific, along 180 W, May, 20162018-07-31Final no updates expected
Microbial enzyme activities: polysaccharide hydrolase activities in bulk seawater samples from the RV\Sonne cruise SO248 in the South and North Pacific, along 180 W, May, 20162018-07-31Final no updates expected
Microbial enzyme activities: glucosidase and peptidase activities of bulk seawater samples from the RV\Sonne cruise SO248 in the South and North Pacific, along 180 W, May, 20162018-07-31Final no updates expected
Microbial enzyme activities: polysaccharide hydrolase activities of gravity filtered seawater samples from the RV\Sonne cruise SO248 in the South and North Pacific, along 180 W, May, 20162018-07-31Final no updates expected
Microbial enzyme activities: peptidase activities of sediment samples from the RV\Polarstern cruise ARKXXVII/3 in the Central Arctic Ocean and Laptev Sea, Aug-Sept. 20122018-07-24Final no updates expected
Microbial enzyme activities: peptidase activities in bulk seawater samples from the RV\Polarstern cruise ARKXXVII/3 in the Central Arctic Ocean and Laptev Sea, Aug-Sept. 20122018-07-24Final no updates expected
Microbial enzyme activities: polysaccharide hydrolase activities of gravity filtered seawater samples from the RV\Polarstern cruise ARKXXVII/3 in the Central Arctic Ocean and Laptev Sea, Aug-Sept. 20122018-07-24Final no updates expected
Microbial enzyme activities: polysaccharide hydrolase activities in bulk seawater samples from the RV\Polarstern cruise ARKXXVII/3 in the Central Arctic Ocean and Laptev Sea, Aug-Sept. 20122018-07-24Final no updates expected
Microbial enzyme activities: peptidase activities of gravity-filtered seawater samples from the RV\Polarstern cruise ARKXXVII/3 in the Central Arctic Ocean and Laptev Sea, Aug-Sept. 20122018-06-25Final no updates expected
Hydrolysis rates from incubations on particles obtained by gravity filtration of water collected on RV/Endeavor EN556 (Patterns of activities project)2017-12-05Final no updates expected
Hydrolysis rates from gravity filtered samples, plate reader results from RV/Endeavor EN556, 2015 (Patterns of activities project)2017-11-16Final no updates expected
Hydrolysis rates from bulk samples, plate reader results from RV/Endeavor EN556, 2015 (Patterns of activities project)2017-11-16Final no updates expected
Microbial enzymatic activities from seawater and from particle-associated seawater communities from Greenland, August 2015 (Patterns of activities project)2017-10-30Final no updates expected
Measurements of nutrients, bacterial cell concentration and bacterial production from RV/Endeavor EN556, June 2015 (Patterns of activities project)2017-10-27Final no updates expected
Bacterial protein production on particles obtained by gravity filtration of water collected on RV/Endeavor EN556 (Patterns of activities project)2017-10-27Final no updates expected
Large volume incubation: DOC, bacterial cell concentration and production from RV/Endeavor EN556, June 2015 (Patterns of activities project)2017-10-27Final no updates expected
Measurements of polysaccharide hydrolase activities in large volume mesocosm incubations RV/Endeavor EN584, July 2016 (Patterns of activities project)2017-10-20Final no updates expected
Notes on Niskin bottle sampling and use: depth of sample, operator, observations, type of experiments run on the sample, from RV/Endeavor EN556 and EN584, 2015 and 2016 (Patterns of activities project)2017-10-20Final no updates expected

People

Principal Investigator: Carol Arnosti
University of North Carolina at Chapel Hill (UNC-Chapel Hill)

Contact: Carol Arnosti
University of North Carolina at Chapel Hill (UNC-Chapel Hill)


Data Management Plan

DMP_Arnosti_OCE-1332881.pdf (68.68 KB)
02/09/2025