NDLI: Benthic nutrient fluxes at longline sea squirt and oyster aquaculture farms and their role in coastal ecosystems

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Benthic nutrient fluxes at longline sea squirt and oyster aquaculture farms and their role in coastal ecosystems

Content Provider	Springer Nature Link
Author	Lee, Jae Seong Kim, Yong Tae Shin, Kyung Hoon Hyun, Jung Ho Kim, Sook Yang
Copyright Year	2011
Abstract	To assess the impact of aquaculture activities, we measured the primary production, total sediment oxygen consumption, and benthic nutrient flux at two aquaculture farms (sea squirt and oyster) and one reference site. The estimated primary production in the water column ranged from 19–169 mmol C m−2 d−1. Total sediment oxygen consumption rates ranged from 58 to 328 mmol m−2 d−1, 1.1 to 40 mmol m−2 d−1 for nitrogen, 0.17 to 3.0 mmol m−2 d−1 for phosphate, and 7.3 to 74 mmol m−2 d−1 for silicate. The average total sediment oxygen consumption at the longline farms was >2.5 times higher than the reference site. Nitrate was significantly removed by denitrification at the longline farms in July and September and ranged from −5.4 to −0.09 mmol m−2 d−1, which is higher than for other coastal sediments. The benthic fluxes of nitrogen and phosphate at longline farms were up to 16 and six times higher than at the reference site, respectively. The average nitrogen requirements of the primary producers were 9.3 mmol m−2 d−1 at the sea squirt farm, 7.0 mmol m−2 d−1 at the oyster farm, and 13.5 mmol m−2 d−1 at the reference site, corresponding to 88, 316, and 27.2% of the nitrogen supplied by benthic fluxes, respectively. Our results suggest that benthic nutrient fluxes at longline farms are a major nutrient source for primary production in coastal waters.
Starting Page	931
Ending Page	944
Page Count	14
File Format	PDF
ISSN	09676120
Journal	Aquaculture International
Volume Number	19
Issue Number	5
e-ISSN	1573143X
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-01-11
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Benthic nutrient flux Benthic–pelagic coupling Denitrification Longline sea squirt and oyster aquaculture production Sediment oxygen consumption Zoology Freshwater & Marine Ecology
Content Type	Text
Resource Type	Article
Subject	Aquatic Science Agronomy and Crop Science

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