期刊
MARINE POLLUTION BULLETIN
卷 174, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2021.113315
关键词
Inorganic nutrients; Invasive species; Nitrate uptake; Rugulopteryx okamurae; Salinity; Temperature
资金
- Spanish Ministry of Ecological Transition and Demographic Challenge [10-ESMARES2-C4A2]
- FEDER Andalucia 2014-2020 [UMA18-FEDERJA162]
- Ministry of Science and Innovation of Spanish Government [PID2020-116136RB-I00]
- Junta de Andalucia [RNM295, RNM338]
- CAPES/PRINT Program [88887.374403/2019-00]
By studying the time series of temperature, salinity, and nutrients in the Strait of Gibraltar, it was found that Rugulopteryx okamurare can grow rapidly in the region under high salinity and temperature conditions, with a high nitrogen storage capacity.
ABS T R A C T Time series of temperature, salinity and nutrients in the Strait of Gibraltar (SoG) were researched to analyze which factors explain the invasive success of Rugulopteryx okamurare, which has colonized wide coastal areas at the Spanish and Moroccan coasts since 2016. Temperature and salinity were higher in the SoG compared to its native habitat, implying that the alga is active during the whole seasonal cycle and grows optimally at the high salinities occurring in the SoG. Nitrate removal experiments indicate that the alga is able to linearly increase its N uptake rates following boost in nitrate concentration. Furthermore, R. okamurae N content ranged from 1.4% to 4.5% suggesting that this species has high N storage capacity potentially usable when the external N concen-tration decreases. These physiological characteristics would explain sharp growth of the alga in the SoG where high N concentrations are registered occasionally.
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