期刊
ALGAE
卷 29, 期 3, 页码 217-225出版社
KOREAN SOC PHYCOLOGY
DOI: 10.4490/algae.2014.29.3.217
关键词
carbon dioxide; fertilizer; Gracilaria; land based aquaculture; nutrients; sustainability
资金
- U.S. EPA Long Island Sound Study's Long Island Sound Futures Fund
- New York State Attorney General's Bronx River Watershed Initiative Grant Program
- National Fish and Wildlife Foundation (NFWF/Legacy Grant) [1401.10.024266, 8012.08.030370]
- Connecticut Sea Grant College Program [R/A-38]
- Woods Hole Sea Grant College Programs [NA10OAR4170083]
- United States - Israel Binational Agricultural Research and Development Fund (BARD) [US-4599-13 R]
- Summer Undergraduate Research Fund (SURF) by University of Connecticut Office of Undergraduate Research
Land-based seaweed (Gracilaria) cultivation systems may provide products with high quality and biosafety for human consumption, as well as for other high value applications. However, a limitation for this land based system is high management costs. The objective of this study was to determine if the management costs for Gracilaria cultivation can be reduced without a decrease in productivity by using CO2 injection along with a high stocking density and high photosynthetically active radiation (PAR), and commercially available fertilizers. When Gracilaria tikvahiae was cultivated at a high stocking density and high PAR, coupled with CO2 enhancement, the productivity was significantly higher than that at a lower stocking density, low light without CO2 injection. We also found that G. tikvahiae grown in a medium of commercially available fertilizer (Jack's Special, JS) showed a similar growth rate and productivity to that grown in von Stosch's enriched (VSE) seawater, while the cost for JS media is only 2% of the cost for VSE. These results suggest that CO2 injection and commercial fertilizer may be a potential way to provide sustainability in land-based Gracilaria cultivation systems.
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