Effect of Indigenous VA-Mycorrhizal Fungi on Nodulation, Growth and Nutrition of Lentil (Lens culinaris L.) and Blackgram (Vigna mungo L.)

Khan, Anwarzeb; Islam, A. K. M. Mominul; Islam, Rafiq; Begum, Shamim Ara; Huq, S.M. Imamul

doi:10.1016/s0176-1617(88)80089-0

Cited by 4 publications

(1 citation statement)

References 17 publications

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“… Data sources: Anderson, Hetrick & Wilson (1994); Artunes & Cardoso (1991); Ba & Guissou (1996); Brandon & Shelton (1997); Dabas & Kaushik (1998); Haugen & Smith (1993); Henkel, Smith & Christensen (1989); Hetrick, Kitt & Wilson (1987); Johnson (1998); Khan et al . 1988; Lin & Fox (1992); Olsen & Habte (1995); Paula & Siqueira (1987); Raju et al .…”

Section: Resultsmentioning

confidence: 99%

Species‐level versus community‐level patterns of mycorrhizal dependence on phosphorus: an example of Simpson’s paradox

Allison

Goldberg

2002

Functional Ecology

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Summary1. Ecological studies commonly assume that it is possible to extrapolate from a response shown by a fixed set of species to the response when the species composition is allowed to change. However, as described by Simpson's paradox, this is not necessarily a reasonable expectation. 2. The impact of Simpson's paradox on an ecological question was tested using a metaanalysis of data on plant responses to arbuscular mycorrhizas. Although species-level response commonly declines as phosphorus availability increases, we hypothesized that the community-level response could either decline or remain constant. 3. As expected, mycorrhizal response of individual species declined significantly as P supply increased. The response averaged across multiple species was negative but not robust, so we cannot distinguish clearly between the hypotheses. 4. It is impossible to assume that community-level responses to environmental gradients are the same as those found at species level. We recommend that experimental tests of hypotheses should allow species identity to change with the environment.

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