Plant and Soil

, Volume 374, Issue 1–2, pp 485–495 | Cite as

Effects of substrate type, moisture and its interactions on soil seed survival of three Rumex species

Regular Article

Abstract

Background and Aims

Seed bank persistence plays a highly relevant role for population dynamics. The impact of interacting environmental factors on seed longevity has only scarcely been investigated. We aimed to analyse the effects of varied soil substrate type and moisture on soil seed survival.

Methods

Seeds of three Rumex species native to different habitats were buried in pots placed in open-air basins. The factors substrate (sand, loam, mud), water table depth (WTD; high, intermediate, low), time, and their interactions were investigated. Viability was tested after 6, 12, and 18 months.

Results

Seeds of R. acetosella (dry habitat) were short-term persistent with highest survival in low WTD on sand. Survival in R. acetosa (moist habitat) was very strongly reduced after 6 months with highest survival under wet conditions. R. maritimus (wet habitat) had overall long-term seed survival, where ‘substrate type’ had the strongest impact. Significant interactions of ‘substrate type’ and WTD were detected.

Conclusions

Seed bank longevity is not a fixed species trait, but varies with environmental factors. Soil moisture, substrate type and their interactions have different effects on the studied species. Persistence-classifications ought to consider the impact of environmental factors.

Keywords

Soil seed bank persistence Rumex acetosella Soil substrate Water table depth Seed burial Longevity index 

Abbreviations

WTD

Water table depth

DFT

Diurnally fluctuated temperature

CAL

Calcium lactate

GLMM

Generalized linear mixed model

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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  1. 1.Institute of Botany, Faculty of Biology and Preclinical MedicineUniversity of RegensburgRegensburgGermany
  2. 2.Faculty of Natural Resources and Marine SciencesTarbiat Modares UniversityNoorIslamic Republic of Iran

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