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Planktonic ecosystems: phytoplankton, seston, detritus

机译:浮游生态系统:浮游植物,斯特塞顿,碎屑

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A Mamdani-type fuzzy-logic model was developed to link Mediterranean seagrass presence to the prevailing environmental conditions. UNEP-WCMC (seagrass presence), CMEMS, and EMODnet (oceanographic/environmental) datasets, along with human-impact parameters were utilized for this expert system. The model structure and input parameters were tested according to their capacity to accurately predict the presence of seagrass families at specific locations. The optimum Fuzzy Inference System (FIS) comprised four input variables: water depth, sea surface temperature, nitrates, and bottom chlorophyll-a concentration, exhibiting reasonable precision (76%). Results illustrated that Posidoniaceae prefers cooler water (16-18 C) with low chlorophyll-a levels (<0.2 mg/m~3); Zosteraceae favors similarly cooler (16-18 C) and mesotrophic waters (Chl-a > 0.2 mg/m~3 ), but also slightly warmer (18-19.5 C) with lower Chl-a levels (<0.2 mg/m~3 ); Cymodoceaceae lives in warm, oli-gotrophic (19.5-21.0 C, Chl-a < 0.3 mg/m~3) to moderately warm mesotrophic sites (18-21.3 C, 0.3-0.4 mg/m~3 Chl-a). Finally, Hydrocharitaceae thrives in the warm Mediterranean waters (21-23 C) of low chlorophyll-a content (<0.25 mg/m~3 ). Climate change scenarios show that Posidoniaceae and Zosteraceae tolerate bathymetric changes, and Posidoniaceae and Zosteraceae are mostly affected by sea temperature rise, while Hydrocharitaceae exhibits tolerance at higher sea temperatures. This FIS could aid the protection of vulnerable seagrass ecosystems by national and regional policy-makers and public authorities.
机译:开发了Mamdani型模糊逻辑模型,以将地中海海草的存在联系到普遍的环境条件。 UNEP-WCMC(海草存在),CMEMS和EMODNET(海洋学/环境)数据集以及人类影响参数用于该专家系统。根据其能力测试模型结构和输入参数,以准确预测在特定位置的海草系列的存在。最佳模糊推理系统(FIS)包括四个输入变量:水深,海面温度,硝酸盐和底部叶绿素 - 一种浓度,表现出合理的精度(76%)。结果表明,Posidoniaceae更喜欢冷却水(16-18℃),低叶绿素-A水平(<0.2mg / m〜3); Zosteraceae伴随着同样的冷却器(16-18℃)和菊噬细胞(CHL-A> 0.2mg / m〜3),但也略微温暖(18-19.5℃),具有较低的CHL-A水平(<0.2mg / m〜3 ); Cymodoceaceae在温暖,橄榄萎缩(19.5-21.0c,chl-a <0.3 mg / m〜3)中,适度温暖的菊噬癖位点(18-21.3 c,0.3-0.4mg / m〜3 chl-a)。最后,氢淀粉在低叶绿素 - 含量的温暖地中海水域(21-23℃)中茁壮成长(<0.25mg / m〜3)。气候变化情景表明,Posidoniaceae和Zosteraceae耐受碱度变化,并且Posidoniaceae和Zosteraceae主要受海洋温度升高的影响,而羟基纤维在较高的海水温度下表现出耐受性。该FIS可以帮助保护脆弱的海草生态系统由国家和区域政策制定者和公共当局保护脆弱的海草生态系统。

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    《Oceanographic Literature Review》 |2020年第12期|2663-2668|共6页
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