Changing perspectives on the role of the soil seed bank in northern temperate deciduous forests and in tropical lowland rain forests: parallels and contrasts

Jankowska-Błaszczuk, Małgorzata; Grubb, P. J.

doi:10.1016/j.ppees.2006.06.001

Cited by 34 publications

(39 citation statements)

References 100 publications

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“…In the gaps, the environmental signals for germination (i.e., rPPFD, PPFD, R:FR ratio, temperature fluctuations) were approximately twice (or more) as high compared to the understory during the summer. Such enhanced environmental signals caused by canopy disturbance have been well documented in both tropical evergreen and deciduous broad-leaved temperate forests (reviewed by Jankowska-Blaszczuk and Grubb, 2006). Furthermore, our results show that the values of all environmental signals in the forest understory were high in early spring prior to the unfolding of canopy leaves and were nearly identical to those in the gaps.…”

Section: Effects Of Temporal Variation In Environmental Signals On Sesupporting

confidence: 81%

“…Jankowska-Blaszczuk and Grubb, 2006;Jankowska-Blaszczuk and Daws, 2007; but see Figueroa and Lusk, 2001). In forest communities, gap creation and thinning usually lead to an alteration of environmental signals for seed germination.…”

Section: Introductionmentioning

confidence: 99%

“…Greater irradiance also results in warmer soil during the day, causing greater fluctuations in soil temperatures (Thompson and Grime, 1983). Therefore, these increased environmental signals due to gap creation often enhance germination, particularly for gap-demanding pioneer species (Fenner and Thompson, 2005;Jankowska-Blaszczuk and Grubb, 2006;Vandelook et al, 2008). Recent studies further suggest that the relative importance of these environmental signals often differs among plant species with different environmental requirements, because the extent of changes along environmental gradients (e.g., soil and litter depth, gap size) varies across signal types (Daws et al, 2002;Pearson et al, 2002Pearson et al, , 2003JankowskaBlaszczuk and Daws, 2007;Vandelook et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Spatio-temporal variation of environmental signals inducing seed germination in temperate conifer plantations and natural hardwood forests in northern Japan

Seiwa

Ando

Imaji

et al. 2009

Forest Ecology and Management

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Section: Effects Of Temporal Variation In Environmental Signals On Sesupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Spatio-temporal variation of environmental signals inducing seed germination in temperate conifer plantations and natural hardwood forests in northern Japan

Seiwa

Ando

Imaji

et al. 2009

Forest Ecology and Management

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“…This may be due to the characteristics of seed shape, seed size, seed dispersal, seed germination etc. (Thompson et al 1998;Araki and Washitani 2000;Jankowska-Błaszczuk and Grubb 2006). Seeds of P. davidiana are light-weighted and dispersed mainly by wind.…”

Section: Discussionmentioning

confidence: 99%

Spatial distribution pattern of soil seed bank in canopy gaps of various sizes in temperate secondary forests, Northeast China

et al. 2009

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To promote the natural regeneration of secondary forests under gap disturbance is one of important approaches for realizing their restoration and sustainable management. However, soil seed bank, one of regeneration strategies, is poorly understood in gaps of secondary forests. Objectives of the study were to evaluate the effects of sizes of experimentally created gaps on seed distribution in soil, and of seed banks on vegetation recovery at early formation stage of gaps in temperate secondary forests, Northeast China. It was found that with increasing gap size, species richness in the seed bank significantly increased (r=0.691, P<0.05, n=10), but correspondence in species-composition of seed reservoir between gaps and canopies adjacent to gaps decreased (r=−0.83, P<0.01, n=10). Gap size and soil depth and their two-way interactions had significant differences on the distribution of seed bank density (F=4.101, P<0.05; F=34.483, P<0.01; F= 5.232, P<0.01, respectively). The Sokal and Sneath similarity indices in species-composition between extant and potential (seed bank) vegetation were generally low, ranging from 0.06 (interior of large gaps) to 0.24 (canopies adjacent to large gaps). From the view of seed bank to restore temperate secondary forests, establishment of medium-sized artificial gaps (i.e., gap size with 500-150 m 2 ) could be more feasible for seed invasion. To conclude, the regeneration potential out of soil seed banks is limited, and the restoration of gaps at early formation stage may be mostly dependent on other reproductive strategies (e.g., vegetative propagation of species).

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“…Bossuyt et al, 2007;Stark et al, 2008) or even more so for seed densities (e.g. Furthermore, while direct seed counts often present entirely different estimates of seed-bank characteristics compared to germination protocols (Gross, 1990;Price et al, 2010), seed-bank samples should be left to germinate for over 2 years (Kostel-Hughes et al, 1998) up to 4 years (Jankowska-Blaszczuk andGrubb, 2006) to tackle delayed germination, rather than the short periods currently applied. Second, sampling mode has also received some attention (Bigwood and Inouye, 1988;Ambrosio et al, 2004;Bossuyt et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Seed banking in ancient forest species: why total sampled area really matters

et al. 2012

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This study investigates how methodological aspects of seed-bank sampling affect seed-bank records in temperate deciduous forests. We focused explicitly on seed-bank records of ancient forest species, which are assumed to lack a persistent seed bank; a hypothesis suspected to be partly due to methodological shortcomings. Through a quantitative review of 31 seed-bank studies in temperate deciduous forests of central and north-west Europe, we quantified the role of sampling methodology in constraining total seed-bank records and seed-bank records of ancient forest species (gamma-diversity, average species' retrieval frequency and average seed density). A major methodological trade-off was established between sampled plot area and the number of plots: at an increased number of plots, the area sampled per plot decreased significantly. The total surface area sampled in a study was the primary determinant of gamma-diversity, both for overall species richness and for ancient forest species richness. A high retrieval frequency of ancient forest species indicated that few plots were intensively sampled. The parallel increase in total species richness and ancient forest species richness and the non-significance of their ratio in relation to methodological variables suggests that ancient forest species are not particularly rare in the seed bank compared to other species. These results imply that sampling methodology has a far-reaching impact on seed-bank records such as gamma-diversity, the detection of ancient forest species and ultimately seed-bank composition. We formulate a set of guidelines to improve the quality of seed-bank studies in temperate deciduous forests

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Changing perspectives on the role of the soil seed bank in northern temperate deciduous forests and in tropical lowland rain forests: parallels and contrasts

Cited by 34 publications

References 100 publications

Spatio-temporal variation of environmental signals inducing seed germination in temperate conifer plantations and natural hardwood forests in northern Japan

Spatio-temporal variation of environmental signals inducing seed germination in temperate conifer plantations and natural hardwood forests in northern Japan

Spatial distribution pattern of soil seed bank in canopy gaps of various sizes in temperate secondary forests, Northeast China

Seed banking in ancient forest species: why total sampled area really matters

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