Hierarchical patterns of symbiotic orchid germination linked to adult proximity and environmental gradients

By J. Diez. 2007

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Size‐dependent flowering and costs of reproduction affect population dynamics in a tuberous perennial woodland orchid (2010, background): “However, despite the thousands of seeds produced by an individual orchid plant, very few seeds, if any, germinate and establish as a mature plant, suggesting that orchid populations may be to some extent microsite-limited, possibly reflecting spatially heterogeneous mycorrhizal distributions (Diez 2”
Spatial variation in below‐ground seed germination and divergent mycorrhizal associations correlate with spatial segregation of three co‐occurring orchid species (2012, methodology): “…Smith & Read 2008; Rasmussen & Rasmussen 2009; Dearnaley, Martos & Selosse 2012); therefore, the availability of suitable mycorrhizal fungi may explain the above-ground abundance and spatial distribution of terrestrial orchid species (Diez 2007; Jacquemyn et al. 2007; McCormick et al. 2009, 2012).”
Do mycorrhizal symbioses cause rarity in orchids? (2011, background): “The distribution of fungi within habitat patches is correlated with variations in edaphic properties such as soil moisture, organic content, pH and nutrient levels (Batty et al. 2001a; Diez 2007).”