Document Type

Article

Publication Date

3-24-2017

Keywords

Bering Sea, Inner shelf, Nitrogen cycle, Nitrate, Ammonium, Chlorophyll a, Carbon, Assimilation, Primary production, F-ratio

Abstract

In the Bering Sea, the nitrogen cycle near Nunivak Island is complicated due to limited nutrient replenishment across this broad shelf, and substantial nitrogen loss through sedimentary processes. While diffusion at the inner front may periodically support new production, the inner shelf in this region is generally described as a regenerative system. This study combines hydrographic surveys with measurements of nitrogen assimilation and benthic fluxes to examine nitrogen cycling on the inner shelf, and connectivity between the middle and inner shelves of the southern and central Bering Sea. Results establish the inner shelf as primarily a regenerative system even in spring, although new production can occur at the inner front. Results also identify key processes that influence nutrient supply to the inner shelf and reveal coupling between the middle shelf nutrient pool and production on the inner shelf.

Publication Title

Journal of Geophysical Research: Oceans

Volume

122

Issue

3

First Page

2422

Last Page

2440

DOI

https://doi.org/10.1002/2016JC012071

Required Publisher's Statement

© 2019 American Geophysical Union

Subjects - Topical (LCSH)

Phytoplankton--Alaska--Nunivak Island--Geographical distribution; Nitrogen cycle--Bering Sea; Water currents--Bering Sea; Marine animals--Food

Geographic Coverage

Nunivak Island (Alaska); Bering Sea

Genre/Form

articles

Type

Text

Rights

Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this document for commercial purposes, or for financial gain, shall not be allowed without the author’s written permission.

Language

English

Format

application/pdf

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