Seed banks: ecological definitions and sampling considerations

Csontos, Péter

doi:10.1556/comec.8.2007.1.10

Cited by 53 publications

(45 citation statements)

References 76 publications

(42 reference statements)

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“…On the other hand, Scleria sp., the most important species in the standing vegetation had a frequence of only 13% in the seed bank. This lack of correspondence has been found numerous times (Korb et al 2005, Sakai et al 2005, Hopfensperger 2007, Lang & Halpern 2007, Zobel et al 2007, Bossuyt & Honnay 2008 and has been attributed to biological differences among species (seed viabilidad and/or likelihood to be predated) or to methodology (germination technique, time of sampling, number or volume of soil samples) which may limit quantification of the soil seed bank (Brown 1992, Malo 2000, Csontos 2007). …”

Section: Discussionmentioning

confidence: 99%

“…Viable seeds stored in the soil at a given time make up the soil seed bank, a source of propagules that contributes to the long term permanence of individual species, and the plant community as well, and to the processes of succession and restoration after disturbances (Harper 1977, Gurevitch et al 2006, Csontos 2007. Soil seed bank studies are of great importance for the understanding of the secondary succession and it is considered as a necessary first step for the design of ecological restoration plans (Baskin & Baskin 1998, Bossuyt & Honnay 2008.…”

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confidence: 99%

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Soil seed bank and the effect of needle litter layer on seedling emergence in a tropical pine plantation

Bueno¹,

Baruch²

2010

RBT

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Abstract:The soil seed bank is the basis for community establishment and permanence and plays a primary role in natural restoration of degraded or altered ecosystems. As part of a restoration project, this study aimed to quantify the soil seed bank and to evaluate the effect of the needle litter layer on seedling emergence. Soil samples from a pine plantation were collected at random in the field and set to germinate in a greenhouse. Half of them were covered by a 6cm layer of dead pine needles simulating field conditions. in the field, 20x20cm plots were established, half were left intact and half were cleaned from the litter needles. All four treatments had 15 replicates and seedling emergence was recorded during six months. Soil seed bank density was 1 222/m 2 from 17 morphotypes. in the field, the number of morphotypes and seedlings was only 9% and 6% respectively, of those emerged in the greenhouse, possibly due to watering and lack of predation in the latter. in both cases, herbs and graminoids were the dominant emerging seedlings, making up to 70-90% of the total. The needle layer didn't prevent seeds from reaching the soil but strongly reduced (>50%) seedling emergence, although high variability within treatments resulted in no statistically significant differences. These results show that the needle layer hinders germination and/or emergence of seedlings from the seed bank. its removal may be a recommended technique to accelerate natural restoration in pine plantations. Rev. Biol. Trop. 59 (3): 1071-1079. Epub 2011 September 01.

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Section: Discussionmentioning

confidence: 99%

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confidence: 99%

Soil seed bank and the effect of needle litter layer on seedling emergence in a tropical pine plantation

Bueno¹,

Baruch²

2010

RBT

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“…5). The extremely high seed density ratios (shown by the two outlier data) was probably due to local disturbances caused by forest animals or human activities, that by turning up lower soil layers resulted in a local »seed bank profile inversion« (CSONTOS 2007).…”

Section: Discussionmentioning

confidence: 97%

“…Consequently, these values can be regarded as the outgrowths of a 12,000 cm 3 sample volume, which amount exceeds 2-3-fold the required minimal volume, which is generally 4000-6000 cm 3 in climax forest vegetation (CSONTOS 2007). MORIMOTO et al (2010) collected a 12,500 cm 3 sample volume from the upper 5 cm soil layer for investigation of the R. pseudoacacia seed bank.…”

Section: Methodsmentioning

confidence: 99%

Soil seed bank of the invasive Robinia pseudoacacia in planted Pinus nigra stands

Cseresnyés¹,

Csontos²

2012

Acta Botanica Croatica

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-Pinus nigra and Robinia pseudoacacia are exotic trees used for afforestation in Hungary. Pinus nigra was non-invasive, however R. pseudoacacia escaped from cultivation and invaded several vegetation types including pine plantations. It has recently been planned to cut P. nigra plantations and replace them by native tree stands, especially in nature reserves. The scattered presence of R. pseudoacacia specimens in pine stands might place constraints on planned tree replacement because of their vegetative resprouting and recolonization from an established seed bank. The aim of this study was to investigate the soil seed bank under the canopy of solitary R. pseudoacacia specimens found in P. nigra plantations. Altogether 250 soil samples were collected from the 0-6 and 6-12 cm soil layers under solitary Robinia trees of varying ages (with basal areas between 62.4 and 1089.3 cm 2 ). Seeds were separated by sieving then scarified and germinated. Seed bank density ranged between 640 and 2285 seeds m -2 with an average distribution of 82.7% and 17.3% in the upper and lower soil layer, respectively. Total density of the seed bank and also the seed bank ratio of the lower soil layer increased with tree age. The accumulated seed bank of R. pseudoacacia should be considered in the careful planning of tree replacement operations in Pinus nigra stands.

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“…At each site and grazing management combination, a representative macro-plot of 3 ha was used for 9 soil samples and grow-out tests were carried out to identify the shrub species and their abundances. The details of the procedures are described by [20] [21]. …”

Section: Study Locationsmentioning

confidence: 99%

Bayesian Estimation of Shrubs Diversity in Rangelands under Two Management Systems in Northern Syria

Niane¹,

Singh²,

Struik³

2014

OJE

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The diversity of shrubs in rangelands of northern Syria is affected by the grazing management systems restricted by the increase in human and livestock populations. To describe and estimate diversity and compare the rangeland grazing management treatments, two popular indices for diversity, the Shannon index and the Simpson index, were studied for the four combinations of two sites, Hammam and Obeisan, and two grazing methods, Closed and Open, using frequentist and Bayesian approaches. We simulated the a priori and a-posteriori distributions of the Shannon and Simpson diversity indices, where from a range of values for a constant in the a priori distribution the best value normalizing the distribution of the diversity indices was chosen. The Bayesian diversity estimates were higher than their frequentist counterparts and had lower standard errors. The grazing methods at each site and sites under each grazing method delivered significant diversity of shrub species. The Bayesian estimates resulted in lower p-values than the frequentist approach for two cases reflecting in Bayesian method's higher power. Bayesian approach is recommended as it has a wider framework for inference on diversity studies.

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Seed banks: ecological definitions and sampling considerations

Cited by 53 publications

References 76 publications

Soil seed bank and the effect of needle litter layer on seedling emergence in a tropical pine plantation

Soil seed bank and the effect of needle litter layer on seedling emergence in a tropical pine plantation

Soil seed bank of the invasive Robinia pseudoacacia in planted Pinus nigra stands

Bayesian Estimation of Shrubs Diversity in Rangelands under Two Management Systems in Northern Syria

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