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Record W7044925267

赤潮异弯藻Heterosigma akashiwo的生长特性

2002· article· en· W7044925267 on OpenAlexaboutno aff

Bibliographic record

VenueRare & Special e-Zone (The Hong Kong University of Science and Technology) · 2002
Typearticle
Languageen
FieldEnvironmental Science
TopicAquatic Ecosystems and Phytoplankton Dynamics
Canadian institutionsnot available
Fundersnot available
KeywordsBaySalinityHeterosigma akashiwoRed tideIrradiance
DOInot available

Abstract

fetched live from OpenAlex

采用多因子實驗設計 ,經三維ANOVA統計分析 (TukeyTest) ,研究了溫度、鹽度和光照強度對魚毒類赤潮藻———赤潮異彎藻Heterosigmaakashiwo生長的影響。結果表明 ,在實驗范圍溫度 (1 2℃、1 9℃、2 5℃、3 2℃ ) ,鹽度 (1 0、1 8、2 5、3 0、3 5 )和光照強度 0 0 2× 1 0 1 6、0 0 8× 1 0 1 6、0 3× 1 0 1 6、1 6× 1 0 1 6quanta/(cm2 ·s)內 ,各溫度和光照強度、以及低鹽度 (1 0 ,1 8)和高鹽度 (3 5 )之間 ,藻生長率有極顯著差異 (P <0 0 0 1 )。光照強度和溫度、鹽度和溫度以及這三個因子之間存在極顯著的相互作用 (P <0 0 0 1 ) ,而光照強度和鹽度之間無顯著的相互作用 (P =0 0 74>0 0 5 ) ,藻生長的最適溫度、光照、鹽度條件分別為 2 5℃、1 6× 1 0 1 6quanta/(cm2 ·s)、1 0— 3 5 ,這時生長率為 0 .85d- 1 。Raphidophyte Heterosigma akashiwo is a fish-killing red tide species, which widely distributes in the world and has caused great economic loss in many countries such as Japan, Canada and New Zealand.In Dalian Bay, China, it caused red tide each summer during 1985-1987 and has been also found in Jiaozhou Bay and Dapeng Bay in recent years.In order to understand the mechanism of red tide formation, it is important to know more about its growth characteristics. This paper used 3-factor experiment design to study the effects of temperature, salinity and irradiance on the growth of this important species H.akashiwo (isolated from Jiaozhou Bay, Qingdao, China) . The results show that the growth of H.akashiwo was significantly different among temperatures (12, 19, 25, 32℃) , irradiance[0.02×10 16, 0.08×10 16, 0.3×10 16, 1.6×10 16quanta/ (cm 2·s) ]and between low salinity (10, 18) and high salinity (35) .There were interactive effects between any two of and among all three physical factors on the growth of H.akashiwo, except irradiance and salinity.The optimal growth condition of H.akashiwo was 25℃, 10-35and 1.6×10 16quanta/ (cm 2·s) with a growth rate of 0.85d -1during the exponential growth phase.Therefore, H.akashiwo could divide at high rate and is more likely to bloom under high temperature and high illumination in summer, and this species is able to distribute widely in the ocean and estuaries due to its adaptation to wide salinities.The paper also discusses red tide formation mechanism and possible wide distribution of this species in China.To protect mariculture industry and fishery resources, more attention should be paid to this fish killing species.

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How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesScience and technology studies, Insufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.625
Threshold uncertainty score0.999

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0010.004
Scholarly communication0.0000.000
Open science0.0010.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0020.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.006
GPT teacher head0.156
Teacher spread0.150 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

Study designNot applicable
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2002
Admission routes1
Has abstractyes

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