Factors influencing seedling emergence and survival inCercidiphyllum japonicum

Kubo, Masako; Sakio, Hitoshi; Shimano, Koji; Ohno, Keiichi

doi:10.1007/bf02804779

Cited by 20 publications

(11 citation statements)

References 14 publications

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“…Field germination may vary considerably between soil types (Ohlson 1999;Schutz et al 2002;Kubo et al 2004;Villagra and Cavagnaro 2005), with available soil moisture being the most critical factor for seed germination in our system. However, when we compared moisture levels between the local and standard soils, we found higher moisture content in the local (and not the standard) soil across all sowing locations.…”

Section: Discussionmentioning

confidence: 99%

Germination behaviour of annual plants under changing climatic conditions: separating local and regional environmental effects

Petrů

Tielbӧrger

2008

Oecologia

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The role of local adaptation and factors other than climate in determining extinction probabilities of species under climate change has not been yet explicitly studied. Here we performed a field experiment with annual plants growing along a steep climatic gradient in Israel to isolate climatic effects for local trait expression. The focus trait was seed dormancy, for which many theoretical predictions exist regarding climate-driven optimal germination behaviour. We evaluated how germination is consistent with theory, indicating local adaptation to current and changing climatic conditions, and how it varies among species and between natural and standardised soil conditions. We reciprocally sowed seeds from three or four origins for each of three annual species, Biscutella didyma, Bromus fasciculatus and Hymenocarpos circinnatus, in their home and neighbouring sowing locations along an aridity gradient. Our predictions were: lower germination fraction for seeds from more arid origins, and higher germination at wetter sowing locations for all seed origins. By sowing seeds in both local and standard soil, we separated climatic effects from local conditions. At the arid sowing location, two species supported the prediction of low germination of drier seed origins, but differences between seed origins at the other sites were not substantial. There were no clear rainfall effects on germination. Germination fractions were consistently lower on local soil than on standard soil, indicating the important role of soil type and neighbour conditions for trait expression. Local environmental conditions may override effects of climate and so should be carefully addressed in future studies testing for the potential of species to adapt or plastically respond to climate change.

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Section: Discussionmentioning

confidence: 99%

Germination behaviour of annual plants under changing climatic conditions: separating local and regional environmental effects

Petrů

Tielbӧrger

2008

Oecologia

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“…This can explain that most seedlings emerge from the bare soil on the alluvial flats. But frequent flooding prohibits their survival there (Kubo et al, 2004). Therefore, seedling establishment of the two species is strongly chance-determined and regrowth from seedlings is scarce in both species.…”

Section: Ecology Of Riparian Relictual Plant Communitiesmentioning

confidence: 98%

Relationships between environment and mountain riparian plant communities associated with two rare tertiary-relict tree species, Euptelea pleiospermum (Eupteleaceae) and Cercidiphyllum japonicum (Cercidiphyllaceae)

Wei

Jiang

Huang

et al. 2010

Flora - Morphology, Distribution, Functional Ecology of Plants

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“…Consequently, C. japonicum can create colonies by producing sprouts of various ages, which changes the age make-up of a stand. C. japonicum juveniles are more rare than those of coexisting tree species in riparian forests (Sakio et al, 2002), because most seedlings die in the current year as a result of desiccation or washing away despite their shade-tolerance (Kubo et al, 2000;Kubo et al, 2004). However, C. japonicum can maintain its populations by sprouting over long periods, thereby compensating for sparse seedling regeneration.…”

Section: Traits Of C Japonicum Sproutsmentioning

confidence: 99%

Age structure and dynamics of Cercidiphyllum japonicum sprouts based on growth ring analysis

Kubo¹,

Sakio²,

Shimano³

et al. 2005

Forest Ecology and Management

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We investigated the factors that encourage sprouting by Cercidiphyllum japonicum, as well as its ability to sprout after cutting, by analyzing the age structure, distribution, and growth of sprouts in one stool of this species. C. japonicum produced numerous sprouts in various age classes, ranging from 7-92 years old; the main stem was 226 years old.Sprouts that were relatively close in age (e.g., 30 or 80 years old) tended to form clusters.Based on an increase in the width of annual growth rings, we estimated that gap formation occurred about 30 years ago. This encouraged existing sprouts to grow more, and many sprouts were produced on the periphery of the stand to take advantage of the improved light conditions. After cutting, larger stems produced more simultaneous sprouts; therefore, sprout occurrence probably depends on the biomass of parent stems, although smaller stems were also able to produce some simultaneous sprouts. In the absence of physical damage, C. japonicum produced more sprouts as a function of increased age as a means of self-maintenance. C. japonicum sprouted simultaneously in response to external disturbances, such as gap formation and cutting, and it sprouted sequentially with increasing age. Therefore, although C. japonicum seedlings are rarely found in forests, C. japonicum can maintain its populations over long periods by sprouting, which compensates for sparse seedling regeneration.

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Factors influencing seedling emergence and survival inCercidiphyllum japonicum

Cited by 20 publications

References 14 publications

Germination behaviour of annual plants under changing climatic conditions: separating local and regional environmental effects

Germination behaviour of annual plants under changing climatic conditions: separating local and regional environmental effects

Relationships between environment and mountain riparian plant communities associated with two rare tertiary-relict tree species, Euptelea pleiospermum (Eupteleaceae) and Cercidiphyllum japonicum (Cercidiphyllaceae)

Age structure and dynamics of Cercidiphyllum japonicum sprouts based on growth ring analysis

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