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indicator analysis

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Journal Article
Aquatic Ecosystem Health & Management (1999) 2 (3): 301–309.
Published: 01 January 1999
..., diversity and saprobity indices and multivariate analysis) were employed to assess the impact of the pollution on diatom assemblages. Suspended solids, biological and chemical oxygen demands increased downstream, and dissolved oxygen, pH and transparency increased upstream. Conductivity was variable...
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Published: 03 April 2017
Figure 9. Canonical Correspondence Analysis (CCA) indicates the relationship between benthic macroinvertebrate taxa and environmental variables in the rivers Ken, Paisuni and Tons. The effective environmental variables are indicated in bold letters and the rivers in the filled triangle. Acronyms More
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Published: 03 July 2015
Figure 1. Components of a biological risk analysis. Arrows indicate lines of risk communication. From Mandrak et al., 2013 a. More
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Published: 02 January 2018
Figure 4. Triplots of redundancy analysis (RDA) using climate indices at station 1 and station 2 in the southern Yellow Sea. More
Journal Article
Aquatic Ecosystem Health & Management (2009) 12 (3): 243–248.
Published: 24 September 2009
... of the application of remote sensing data and geographic information systems to extract information on spatial distribution of mangrove and tidal flat ecosystems, as well as on the reclamation area for human development and indicator investigation and analysis, using remote sensing extracted and field survey...
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Published: 02 October 2017
Figure 3. Analysis of South American and worldwide 18S D. geminata sequences. (a) Maximum likelihood phylogenetic tree of the Cymbellales, including the worldwide D. geminata sequences. The analysis was performed with the program PhyML (Guindon et al., 2010 ), using an evolutionary model More
Journal Article
Aquatic Ecosystem Health & Management (2008) 11 (2): 230–242.
Published: 06 June 2008
... that measure richness and species composition. Univariate statistical analysis among 25 environmental variables and biological indices indicated that watersheds of stable land use differed significantly from watersheds undergoing conversion of forest to urban land uses. Significant correlations were observed...
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Journal Article
Aquatic Ecosystem Health & Management (2017) 20 (3): 242–251.
Published: 03 July 2017
... at least once and up to nine times during 2006–2013. Principal components analysis indicated the fish communities in unimpaired embayments clustered into two groups. One group had larger exposure distance (opening) to Lake Ontario and larger exposure index (surface area ÷ opening), and was termed “exposed...
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Journal Article
Aquatic Ecosystem Health & Management (2005) 8 (3): 323–349.
Published: 01 July 2005
... for developing two benthic integrity indices based on multimetric analysis and discriminant function analysis. Based on the training site results, the discriminant function analysis categorized the macroinvertebrate community at all random sites as 45 percent low impact and 55 percent high impact. A multimetric...
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Journal Article
Aquatic Ecosystem Health & Management (2016) 19 (1): 29–39.
Published: 02 January 2016
... based on these six indicators. Then, cluster analysis was utilized to classify the 15 sites based on the various indicators and to identify the most influential indicators. The results showed that the ecological status of Poyang Lake was affected not only by eutrophication but also by hydrological...
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Journal Article
Aquatic Ecosystem Health & Management (2008) 11 (1): 91–104.
Published: 10 March 2008
...John J. Mack; Nikki Husat Avdis; Eugene C. Braig, IV; David L. Johnson Substantial effort in recent years has been invested in developing monitoring protocols and indicators for assessing the health of coastal wetlands of the Great Lakes. Most efforts have collected data exclusively in Great Lakes...
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Journal Article
Aquatic Ecosystem Health & Management (2018) 21 (1): 82–92.
Published: 02 January 2018
...Lifang Jiang; Yi Yin; Xuhua Cheng; Zhixu Zhang Based on the hindcast data from third-generation wave model WAVEWATCH III, this study presents a notable interannual variability of significant wave height in the northern South China Sea. As indicated by the empirical orthogonal function analysis...
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Published: 01 April 2005
Figure 5. Diatom stratigraphy of Walden Pond with major zonations, ratios of chrysophyte scales and cysts to diatom frustules, diatom-inferred pH (DI-pH) and TP (DI-TP) and analysis of dissimilarity using the program ANALOG. The sample-specific error for DI-pH and DI-TP (for TP back-transformed More
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Published: 02 July 2016
Figure 4. Canonical correlation analysis (CCA) ordination diagrams for macrofauna taxa density data (10 taxa identified by the SIMPER analysis). The environmental variables are shown as arrows; the triangles indicate specific taxa. For abbreviations of the macrofauna taxa, see Table 3 . DO More
Journal Article
Aquatic Ecosystem Health & Management (2011) 14 (4): 356–375.
Published: 01 October 2011
...Gerald J. Niemi; Euan D. Reavie; Gregory S. Peterson; John R. Kelly; Carol A. Johnston; Lucinda B. Johnson; Robert W. Howe; George E. Host; Tom P. Hollenhorst; Nicholas P. Danz; Jan J. H. Ciborowski; Terry N. Brown; Valerie J. Brady; Richard P. Axler Biological indicators can be used both...
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Published: 02 April 2016
Figure 2. Trends in mercury and PCB fish concentrations in (a) Brown Bullhead, (b) Common Carp and (c) White Perch in Hamilton Harbour. Data points indicate mean concentrations for each year, ± standard deviation. Solid lines indicate Sen's slope estimate from the MAKESENS analysis. The dashed More
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Published: 03 July 2018
Figure 1. Map of Toronto Harbour study area showing the locations of Inner (IH) and Outer (OH) Harbours and nearshore. The IH is further subdivided into four quadrants (NE, NW, SE and SW). The squares represent discrete water samples collected for chemistry analysis. The black track indicates More
Journal Article
Aquatic Ecosystem Health & Management (2006) 9 (1): 67–71.
Published: 01 January 2006
.... The Geography Information System and Pearson correlation analysis were applied to assess changes of the physical and chemical indicators. The case study showed that most of the indicators of Xiamen's Western Sea ecosystem have been changed greatly in the past five decades, especially in shoreline, sea area...
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Journal Article
Aquatic Ecosystem Health & Management (2018) 21 (2): 201–212.
Published: 03 April 2018
... and chemical indicators of water quality is recommended for all urban lakes and rivers in order to protect both the aquatic ecosystem and health of the local residents living near the lake. Copyright © 2018 AEHMS 2018 nutrient spatial variations principle component analysis factor analysis...
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Journal Article
Aquatic Ecosystem Health & Management (2004) 7 (1): 43–58.
Published: 01 January 2004
... variance and sample processing time while reducing the relationship with environmental variables. These results indicate that an analysis based exclusively on diatoms provided the optimal approach. Traditional nutrient measurements (phosphorus and nitrogen) did not explain a significant part...
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