1-16 OF 16 RESULTS FOR

DECORANA

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
×Close Modal
Sort by
Series: GSA Special Papers
Published: 01 January 1993
DOI: 10.1130/SPE276-p189
... and environmental factors show high variance, clear relations can be demonstrated. In particular, the DECORANA program for ordination analysis shows that many species have clearly defined optima either in low- or high-alkalinity lakes. The relations discovered from the surface sample data set can be used...
Image
Upper: two-dimensional ordination of New Zealand deep-sea foraminiferal sam...
Published: 01 October 2013
Figure 9 Upper: two-dimensional ordination of New Zealand deep-sea foraminiferal samples produced by Detrended Correspondence Analysis (DECORANA). Sample (triangles) numbers have been left off to assist readability; sample associations (A–S) produced by cluster analysis based on full census data
Journal Article
Published: 01 October 2013
Journal of Foraminiferal Research (2013) 43 (4): 415-442.
...Figure 9 Upper: two-dimensional ordination of New Zealand deep-sea foraminiferal samples produced by Detrended Correspondence Analysis (DECORANA). Sample (triangles) numbers have been left off to assist readability; sample associations (A–S) produced by cluster analysis based on full census data...
FIGURES | View All (13)
Journal Article
Journal: PALAIOS
Published: 01 April 2015
PALAIOS (2015) 30 (4): 304-326.
... the most important signals. Following Gauch (1982) , nine so-called cut levels (0%, < 0.5%, < 1%, < 2%, < 4%, < 8%, < 16%, < 32%, < 64%) were defined for the sporomorph percentages. Detrended correspondence analysis (DCA; Hill and Gauch 1980 ) using Decorana ( Hill 1994...
FIGURES | View All (16)
Journal Article
Journal: Paleobiology
Published: 01 August 2009
Paleobiology (2009) 35 (3): 393-412.
... between corresponding axes of the two methods. Because there was better separation of collection scores along axis 1 for DCA than for NMDS, only the DCA results will be discussed here. The ordinations were performed using the decorana function from the vegan package ( Oksanen et al. 2007 ) for the R...
FIGURES | View All (10)
Journal Article
Journal: PALAIOS
Published: 01 August 2006
PALAIOS (2006) 21 (4): 316-324.
... , 320 p. Hill , M.O. , 1979 , DECORANA—a FORTRAN program for detrended correspondence analysis and reciprocal averaging : Cornell University , Ithaca , 30 p. Hill , M.O. , and Gauch , H.G.J. , 1980 , Detrended correspondence analysis: an improved ordination technique...
FIGURES | View All (8)
Journal Article
Journal: Paleobiology
Published: 01 September 2012
Paleobiology (2012) 38 (4): 664-681.
... in a sample counted as a single individual) and the percentage of samples in which the taxon was present. Detrended Correspondence Analysis (DCA) was also conducted to further evaluate the recognized biofacies, using the decorana function in the vegan package ( Oksanen et al. 2009 ) in R 2.9.2 ( R...
FIGURES | View All (7)
Journal Article
Published: 22 September 2016
Journal of the Geological Society (2017) 174 (1): 110-128.
... correspondence analysis (DCA, Hill & Gauch 1980 ) using the software Decorana ( Hill 1994 ) determined a length of 1.2 SD (units of average standard deviation of species turnover) for the samples from the core segment and 1.1 SD for the OSB. Following Ter Braak & Smilauer (2002) a maximum gradient...
FIGURES | View All (8)
Journal Article
Published: 01 April 2011
Journal of Foraminiferal Research (2011) 41 (2): 124-137.
... above MHW level (e.g., Hayward and others, 1999a , 2007 ). The NZCI values indicate that axis 1 on the Decorana ordination (Fig. 5 ) most strongly approximates salinity, with the most-saline association (Am) on the far left and the least saline (Ts) on the far right. In between...
FIGURES | View All (9)
Journal Article
Journal: PALAIOS
Published: 01 June 2001
PALAIOS (2001) 16 (3): 205-217.
... resulted in a final matrix of 1337 samples and 46 taxa. This matrix was analyzed with Detrended Correspondence Analysis, also known as DCA or Decorana ( Hill and Gauch, 1980 ; McCune and Mefford, 1997 ). DCA is a multivariate statistical technique widely used with ecological data to ordinate taxa...
FIGURES | View All (9)
Journal Article
Journal: Paleobiology
Published: 28 April 2016
Paleobiology (2016) 42 (3): 359-379.
FIGURES | View All (10)
Journal Article
Journal: Paleobiology
Published: 07 May 2014
Paleobiology (2014) 40 (3): 398-416.
... and 2 for NMDS results). All analyses are run in the statistical programming framework R, version 2.12.1 ( R Development Core Team 2010 ). CA was performed using the “cca” function in the “vegan” package and DCA was calculated using the “decorana” function in the “vegan” package with the default...
FIGURES | View All (7)
Journal Article
Journal: PALAIOS
Published: 01 November 2008
PALAIOS (2008) 23 (11): 760-772.
... ( Shi, 1993 ; McCune and Grace, 2002 ). Removing the general relativization by row totals and then re-analyzing the log-transformed data matrix failed to change the results or interpretations of this study. DCA was performed using DECORANA from the VEGAN package in R ( R Project, 2007 ). We applied...
FIGURES | View All (9)
Journal Article
Journal: PALAIOS
Published: 01 January 2008
PALAIOS (2008) 23 (1): 43-54.
.... , 2005b , Survival strategies of brachiopod faunas from the end-Permian mass extinction : Palaeogeography, Palaeoclimatology, Palaeoecology , 224 . 232 – 269 . Cornell University , 1979 , DECORANA—A FORTRAN Program for Detrended Correspondence Analysis and Reciprocal Averaging : Ithaca, New...
FIGURES | View All (8)
Journal Article
Journal: PALAIOS
Published: 01 July 2007
PALAIOS (2007) 22 (4): 392-407.
.... Of the two, DCA more successfully segregated samples by depositional environment, so its results are presented here. DCA was performed using DECORANA from the VEGAN package in R ( R Project, n.d. )., with downweighting of rare species turned on to prevent extremely rare taxa from distorting the ordinations...
FIGURES | View All (11)
Journal Article
Journal: Paleobiology
Published: 01 January 2001
Paleobiology (2001) 27 (3): 539-563.
FIGURES | View All (11)