DOI: 10.1016/j.scitotenv.2019.135517
论文题名: Diatoms as indicators of the multivariate environment of mountain lakes
作者: Rivera-Rondón C.A. ; Catalan J.
刊名: Science of the Total Environment
ISSN: 489697
出版年: 2020
卷: 703 语种: 英语
英文关键词: Environmental assessment
; Environmental reconstruction
; Palaeolimnology
; Spatial autocorrelation
; Transfer functions
Scopus关键词: Autocorrelation
; Climate change
; Eutrophication
; Lakes
; Landforms
; Least squares approximations
; Organic carbon
; Phytoplankton
; Sodium compounds
; Sulfur compounds
; Temperature
; Acid neutralizing capacity
; Dissolved organic carbon
; Environmental assessment
; Environmental conditions
; Environmental reconstruction
; Palaeolimnology
; Partial least square (PLS)
; Spatial autocorrelations
; Transfer functions
; ammonia
; calcium
; chloride
; magnesium
; nitrate
; nitrogen
; organic carbon
; phosphorus
; potassium
; sodium
; sulfate
; autocorrelation
; bioindicator
; diatom
; environmental assessment
; ionic composition
; lacustrine environment
; mountain environment
; multivariate analysis
; paleolimnology
; spatial analysis
; transfer function
; water chemistry
; Article
; chemical analysis
; diatom
; environmental factor
; global change
; lake ecosystem
; macrophyte
; pH
; priority journal
; seasonal variation
; sediment
; thermal conductivity
; vegetation
; water temperature
; chemistry
; diatom
; environmental monitoring
; lake
; physiology
; pollution
; procedures
; spatial analysis
; temperature
; water pollutant
; Pyrenees
; Bacillariophyta
; Diatoms
; Environmental Monitoring
; Environmental Pollution
; Geologic Sediments
; Lakes
; Phosphorus
; Spatial Analysis
; Temperature
; Water Pollutants
英文摘要: Diatom assemblages are used widely as indicators of environmental conditions. They have been particularly useful in the assessment of some acute environmental problems such as water acidification, eutrophication and salinisation. High mountain lakes are currently a research focus as sentinels of global change, predominantly of long-distance atmospheric pollution and climate warming. The diatom assemblages in these lakes are extremely rich, and the sediment record provides short and long historical perspectives of the changes. We investigated the relative sensitivity of diatoms to the main environmental gradients found in mountain lakes and evaluated the strength and uncertainties for predicting simultaneously several environmental variables associated with these gradients based on a survey of 83 lakes in the Pyrenees. Variables related to the ionic composition and acid-base balance (calcium*, acid neutralizing capacity*, magnesium, sodium, and sulphates), trophic conditions (total phosphorus* and dissolved organic carbon) and physical factors (water temperature*, irradiance at the lake bottom*, and macrophyte cover) explained independently the variation in the diatom assemblages. However, the assemblage predictive capacity of these variables- tested by developing transfer functions (Weighted Averaging- Partial Least Squares) - was only acceptable for a subset of the variables (*). The spatial autocorrelation of the environmental variables had no influence on the performance of the transfer functions except for water temperature, which is highly dependent on altitude. Our results indicate that diatom assemblages have great potential for assessments of multiple environmental variables in mountain lakes and, consequently, in applications of global change surveillance. © 2019 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159311
Appears in Collections: 气候变化与战略
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作者单位: UNESIS, Departamento de Biología, Pontificia Universidad Javeriana, Cra. 7 No. 40-62, Bogotá, 110231, Colombia; Centre d'Estudis Avançats de Blanes, CSIC, Carrer Accés Cala St. Francesc 14, Blanes, E-17300, Spain; CREAF, Campus UAB, Edifici C, Cerdanyola del Vallès, E-08193, Spain
Recommended Citation:
Rivera-Rondón C.A.,Catalan J.. Diatoms as indicators of the multivariate environment of mountain lakes[J]. Science of the Total Environment,2020-01-01,703