External supply and plant demand

Everwet forests that harbor adaptively diverse bromeliad species demonstrate how family members partition nutrient capital in shared ecosystems. Resolution is uncommonly high for reasons related to plant architecture, physiology and capacity to grow on the ground and up through the canopy to its most exposed and hostile perches (e.g., Figs. 5.1, 7.11, 7.12).

Figure 5.2. Aspects of Bromeliaceae related to mineral nutrition. (A) Tillandsia utri-culata illustrating litter impounded by a phytotelm shoot. (B) Autoradiograph of a medially sectioned Tillandsia caput-medusae shoot after being fed 45Ca through the surface of a single leaf base. (C) Small arboreal ant carton in southern Venezuela supporting seedlings most of which appear to be Codonanthe sp. (Gesneriaceae). (D) Phytotelmata of Vriesea gigantea containing a drowned insect in Espirito Santo State, Brazil. (E) Trichome of Brocchinia reducta, no label present (control). (F) Autoradiograph of Brocchinia reducta trichome exposed to 3H-leucine. (G) Autoradiograph of Brocchinia acuminata trichome exposed to 3H-leucine. (H) Autoradiograph of Tillandsia streptophylla trichome exposed to 3H-leucine.

Figure 5.2. Aspects of Bromeliaceae related to mineral nutrition. (A) Tillandsia utri-culata illustrating litter impounded by a phytotelm shoot. (B) Autoradiograph of a medially sectioned Tillandsia caput-medusae shoot after being fed 45Ca through the surface of a single leaf base. (C) Small arboreal ant carton in southern Venezuela supporting seedlings most of which appear to be Codonanthe sp. (Gesneriaceae). (D) Phytotelmata of Vriesea gigantea containing a drowned insect in Espirito Santo State, Brazil. (E) Trichome of Brocchinia reducta, no label present (control). (F) Autoradiograph of Brocchinia reducta trichome exposed to 3H-leucine. (G) Autoradiograph of Brocchinia acuminata trichome exposed to 3H-leucine. (H) Autoradiograph of Tillandsia streptophylla trichome exposed to 3H-leucine.

Figure 5.3. Aspects of Bromeliaceae related to mineral nutrition (continued). (A) Loose epicuticle on foliage of Catopsis berteroniana. (B) Catopsis berteroniana growing as an epiphyte in Bahia State, Brazil. (C) Atrophied trichome on the upper part of the leaf of Brocchinia reducta above the phytotelmata illustrating the fibrillar nature of the loose epicuticle (x250). (D) Brocchinia vestita growing on boggy soil among carnivorous Heliamphora sp. on Cerro Neblina, Venezuela.

Figure 5.3. Aspects of Bromeliaceae related to mineral nutrition (continued). (A) Loose epicuticle on foliage of Catopsis berteroniana. (B) Catopsis berteroniana growing as an epiphyte in Bahia State, Brazil. (C) Atrophied trichome on the upper part of the leaf of Brocchinia reducta above the phytotelmata illustrating the fibrillar nature of the loose epicuticle (x250). (D) Brocchinia vestita growing on boggy soil among carnivorous Heliamphora sp. on Cerro Neblina, Venezuela.

Table 5.1. Mineral nutrients present in the foliage of a typical eutroph (cereal crop) and of Tillandsia paucifolia on nutrient-stressed and better-nourished cypress trees in Florida

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