Time course of foliar absorption of water inPanicum andPaspalum

Polystichum munitum (Dryopteridaceae) varies geographically in its capacity to absorb fog water by foliar uptake within the redwood forest ecosystem

“…Therefore, variation in absorption must result from differences in the specifi c pathway for water entry into the fronds throughout the ecosystem. We assume that water enters P. munitum fronds by diffusing through the cuticle as observed in other species ( Slatyer, 1960 ;Vaadia and Waisel, 1963 ;Su á rez and Gloser, 1982 ;Yates and Hutley, 1995 ;Gouvra and Grammatikopoulos, 2003 ) without absorbent trichomes or hydathodes. Variation in cuticular composition, architecture, or environmental damage will greatly affect leaf surface permeability and could result from genotypic differences between populations or anatomical plasticity driven by environmental conditions in the ecosystem ( Berlyn et al, 1992 ;Kerstiens, 1996 ;Riederer and Schreiber, 2001 ;Shepherd and Griffi ths, 2006 ).…”

“…In these ecosystems and others, plants gain access to fog and cloud moisture through root uptake of coalesced water that drips to the soil or by direct foliar uptake of water retained by the plant crowns following interception. Foliar uptake occurs when water diffuses through leaf surfaces via the cuticle ( Slatyer, 1960 ;Vaadia and Waisel, 1963 ;Su á rez and Gloser, 1982 ;Yates and Hutley, 1995 ;Gouvra and Grammatikopoulos, 2003 ), absorbent trichomes ( Franke, 1967 ;Benzing et al, 1978 ), or hydathodes ( Martin and von Willert, 2000 ). Unlike root uptake of water that occurs only when signifi cant fog or cloud inundation causes drip to the soil, foliar uptake allows plants to immediately capture any atmospheric water subsidy that wets foliage but may otherwise never reach the ground ( M ú nne-Bosch, 2009 ).…”

Foliar water uptake: a common water acquisition strategy for plants of the redwood forest

“…Therefore, foliar uptake capacity may increase with moderate plant drought stress until the pathway for absorption at the leaf surface is restricted by dehydration from increased levels of drought stress. While the specific pathway of water entry into the leaves of our species remains unknown, research into water uptake pathways in other plant taxa shows that water can diffuse into leaves through the cuticle (Slatyer 1960 ; Vaadia and Waisel 1963 ; Suarez and Gloser 1982 ; Yates and Hutley 1995 ; Gouvra and Grammatikopoulos 2003 ), particularly in species without specialized uptake channels like hydathodes (Martin and von Willert 2000 ) or absorbent trichomes (Franke 1967 ; Benzing et al 1978 ). Assuming that the cuticle is a viable pathway for water entry in our study species (none of these plants are known to possess hydathodes or absorbent trichomes) extreme water stress could limit foliar uptake due to the contraction of the epidermis and cuticle from dehydration.…”

Measurements and ecological implications of non‐rainfall water in desert ecosystems—A review

“…Numerous publications reports on the ability of plants to absorb dew (Andrade, 2003;Babu & Went, 1978;Baier, 1966;Boucher, Munson, & Bernier, 1995;Caird, Richards, & Donovan, 2007;Duvdevani, 1957Duvdevani, , 1964Foster, Pribush, & Carter, 1990;Gouvre & Grammatikopoulos, 2003;Hill et al, 2015;Katz, Oren, Schulze, & Milburn, 1989;Kim & Lee, 2011;Long, 1958;Monteith, 1957;Stone, Shachori, & Stanley, 1956;Stone, Went, & Young, 1950;Suárez & Gloser, 1982;Waisel, 1958;Zhuang & Ratcliffe, 2012) and fog (Leyton & Armitage, 1968;Suarez and Glosser, 1982;Katz et al, 1989;Smith & McClean, 1989;Yates & Hutley, 1995;Hutley, Doley, Yates, & Boonsaner, 1997;Berry & Smith, 2013;Burges & Dawson, 2004;Fischer et al, 2009;Eller, Lima, & Oliveira, 2013;Goldsmith, 2013). Numerous publications reports on the ability of plants to absorb dew (Andrade, 2003;Babu & Went, 1978;Baier, 1966;Boucher, Munson, & Bernier, 1995;Caird, Richards, & Donovan, 2007;Duvdevani, 1957Duvdevani, , 1964Foster, Pribush, &a...…”