کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5765713 | 1626905 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Understanding the blob bloom: Warming increases toxicity and abundance of the harmful bloom diatom Pseudo-nitzschia in California coastal waters
ترجمه فارسی عنوان
درک شکوفه شکم: گرم شدن سبب افزایش سمیت و فراوانی ایزوتوپهای شکوفه پر زرق و برق پسیودویتزشیا در آبهای ساحلی کالیفرنیا
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم آبزیان
چکیده انگلیسی
The toxic diatom genus Pseudo-nitzschia produces environmentally damaging harmful algal blooms (HABs) along the U.S. west coast and elsewhere, and a recent ocean warming event coincided with toxic blooms of record extent. This study examined the effects of temperature on growth, domoic acid toxin production, and competitive dominance of two Pseudo-nitzschia species from Southern California. Growth rates of cultured P. australis were maximal at 23 °C (â¼0.8 dâ1), similar to the maximum temperature recorded during the 2014-2015 warming anomaly, and decreased to â¼0.1 dâ1 by 30 °C. In contrast, cellular domoic acid concentrations only became detectable at 23 °C, and increased to maximum levels at 30 °C. In two incubation experiments using natural Southern California phytoplankton communities, warming also increased the relative abundance of another potentially toxic local species, P. delicatissima. These results suggest that both the toxicity and the competitive success of particular Pseudo-nitzschia spp. can be positively correlated with temperature, and therefore there is a need to determine whether harmful blooms of this diatom genus may be increasingly prevalent in a warmer future coastal ocean.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Harmful Algae - Volume 67, July 2017, Pages 36-43
Journal: Harmful Algae - Volume 67, July 2017, Pages 36-43
نویسندگان
Zhi Zhu, Pingping Qu, Feixue Fu, Nancy Tennenbaum, Avery O. Tatters, David A. Hutchins,