View source for Ecography (1998) 21, 117-123

{{Publication
|Publication authors=[[Jean-Pierre Rossi]] and Patrick Quénéhervé
|Author Page=Jean-Pierre Rossi
|Publication date=1998
|dc:title=Relating species density to environmental variables in presence of spatial autocorrelation: a study case on soil nematodes distribution
|Publication journal=Ecography
|prism:volume=21 (2)
|prism:startingPage=117
|Last page=123
|DOI=10.1111/j.1600-0587.1998.tb00665.x
|Publication abstract=The relationships between soil nematodes and soil texture, carbon content and depth were assessed in both a cultivated and uncultivated plots. Simple correlation coefficient analyses indicated a negative linear correlation between the plant-parasitic species ''Helicotylenchus retusus'' Siddiqui and Brown and soil clay content in the uncultivated site. However, Mantel tests showed this correlation to be spurious and only due to the presence of a common spatial pattern in the variables distribution. Both ''H. retusus'' density and soil clay content appeared to be independently driven by a common, unknown cause. The use of suitable statistical methods to analyse spatially dependent variables proved to be particularly fruitful in that they prevent spurious correlations and allow us to test different causal models involving the set of variables at hand.
|AbstractCC=Yes
|Research topic=environment - cropping system/rotation
|Is book=No
}}
{{Pest record
|Pest=Helicotylenchus retusus
|Quarantined=No
}}