Nitrogen and Carbon Removal Capacity by Farmed Kelp Alaria marginata and Saccharina latissima Varies by Species

Umanzor, Schery; Stephens, Tiffany

doi:10.3390/aquacj3010001

Nitrogen and Carbon Removal Capacity by Farmed Kelp Alaria marginata and Saccharina latissima Varies by Species

Journal Article · Fri Dec 23 00:00:00 EST 2022 · Aquaculture Journal

DOI:https://doi.org/10.3390/aquacj3010001· OSTI ID:1906897

; Stephens, Tiffany

An increasing body of evidence shows that seaweeds, including kelp, can be used as a tool to neutralize or remove excess nutrients and metals from the water column. Here we report on a preliminary field assessment showing potential nutrient and carbon removal differences in sugar kelp and ribbon kelp grown in common gardens. Seawater and tissue samples were collected systematically from two farms in Alaska. Results show differences between the %N and %C content between Alaria marginata and Saccharina latissima. Results also show that tissue nitrogen in ribbon kelp varies sharply due to nitrogen availability in the water column. In contrast, the percentage of tissue N in sugar kelp remains comparatively stable. Our outcomes provide insight into potential differences in nutrient removal and harvest timing for different kelp species.

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Sponsoring Organization:: USDOE Advanced Research Projects Agency - Energy (ARPA-E)

Grant/Contract Number:: AR0001448

OSTI ID:: 1906897

Journal Information:: Aquaculture Journal, Journal Name: Aquaculture Journal Journal Issue: 1 Vol. 3; ISSN 2673-9496

Publisher:: MDPI AGCopyright Statement

Country of Publication:: Country unknown/Code not available

Language:: English

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