Influence of a low-intensity fire on a Pinus halepensis Mill. forest seed bank and its consequences on the early stages of plant succession

2001 ◽  
Vol 49 (2) ◽  
pp. 105-114 ◽  
Author(s):  
PABLO FERRANDIS ◽  
JORGE DE LAS HERAS ◽  
JOSÉ M. HERRANZ ◽  
JUAN J. MARTíNEZ-SÁNCHEZ ◽  
JOSÉ M. HERRANZ
Keyword(s):  
Seed Bank ◽  
Pinus Halepensis ◽  
Plant Succession ◽  
Low Intensity ◽  
Early Stages

scholarly journals Topsoil Seed Bank as Feeding Ground for Farmland Birds: A Comparative Assessment in Agricultural Habitats

Land ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 967
Author(s):  
Aikaterini Voudouri ◽  
Evgenia Chaideftou ◽  
Athanassios Sfougaris
Keyword(s):  
Seed Bank ◽  
Food Supply ◽  
Chenopodium Album ◽  
Amaranthus Retroflexus ◽  
Comparative Assessment ◽  
Farmland Birds ◽  
Polygonum Aviculare ◽  
Low Intensity ◽  
Southern Mediterranean ◽  
Agricultural Areas

The topsoil seed bank was studied in four types of agricultural bird habitats: fields with cereals, maize, clover and tilled fields of a Mediterranean plain to determine the potentially richest habitat based on food supply for the wintering farmland birds. The diversity and abundance of topsoil seeds differed between seasons but did not differ significantly between habitats. The cereal habitat was the richest in food supply for the overwintering of farmland birds. The topsoil seed bank was dominated by Chenopodium album, Polygonum aviculare and Amaranthus retroflexus. The findings of this study provide insight for low-intensity management of higher-elevation mount agricultural areas of southern Mediterranean by preserving seed-rich habitats for farmland avifauna.

The role of the permanent soil seed bank in early stages of a post-agricultural succession in the Inland Pampa, Argentina

Vegetatio ◽  
1988 ◽  
Vol 74 (1) ◽  
pp. 39-45 ◽  
Author(s):  
Evelina D'Angela ◽  
Jos� M. Facelli ◽  
Elizabeth Jacobo
Keyword(s):  
Seed Bank ◽  
Soil Seed Bank ◽  
Early Stages

The Role of Soil Seed Bank in the Early Stages of Plant Recovery After Fire in a Pinus Pinaster Forest in SE Spain

1996 ◽  
Vol 6 (1) ◽  
pp. 31 ◽  
Author(s):  
P Ferrandis ◽  
JM Herranz ◽  
JJ Martínez-Sánchez
Keyword(s):  
Seed Bank ◽  
Pinus Pinaster ◽  
Soil Seed Bank ◽  
Se Spain ◽  
Plant Recovery ◽  
Early Stages ◽  
Fire Effect ◽  
Species Establishment ◽  
Mediterranean Pine

The implication of the viable soil seed bank in the early stages of the plant recovery after fire was studied in a recently burnt Mediterranean pine forest of Pinus pinaster. Seed number contained in soil samples taken inmediately after fire and emergent seedling number recorded in the field during the subsequent year were compared. Although the fire effect was important, available seed density in the soil after fire was relatively high (around 2,200 seeds/m2). A small group of species containing the main shrub species in the unburnt community predominated both in the viable seed bank and field germination after fire. However, these species showed low germination rates in the field, as opposed to species with the lowest presence in the seed bark. The predominance of woody obligate seeders in the seed bark after fire and the high specific correspondence between seed bank and germination in the field, emphasize the important role of the seed bank contained in the soil before fire in the postfire species establishment.

Aleppo Pine (Pinus Halepensis) Postfire Regeneration: the Role of Canopy and Soil Seed Banks

1996 ◽  
Vol 6 (2) ◽  
pp. 59 ◽  
Author(s):  
EN Daskalakou ◽  
CA Thanos
Keyword(s):  
Seed Bank ◽  
Rainy Season ◽  
Seedling Recruitment ◽  
Pinus Halepensis ◽  
Soil Seed Bank ◽  
Large Fraction ◽  
Seed Banks ◽  
Aleppo Pine ◽  
Postfire Regeneration ◽  
Canopy Seed Bank

Pinus halepensis (Aleppo pine), is the dominant tree of a large fraction (26%) of the Greek coniferous forests; this species is an endemic pine of the Mediterranean Rim and well adapted to fire. Its regeneration is accomplished exclusively through seeds, thus its soil and canopy seed banks are of paramount importance for postfire resilience. Cone opening and seed dispersal were investigated in unburned forests of Attica (Greece) and it was found that Pinus halepensis trees maintain a significant percentage of the yearly cone crop (40-80%) closed, thus creating a persistent, canopy seed bank. Full viability of enclosed seeds was maintained for at least three years in canopy storage; moreover, preliminary results concerning the viability of seeds enclosed within the cones for four to more than 50 years showed a gradual reduction of both final percentage and rate of germination. Nevertheless, cones of up to 20 years of age contained a considerable fraction of germinable seeds. On the other hand, Aleppo pine forms only a short-lived (transient) soil seed bank; this bank was particularly abundant after a fire, as a result of the fire-induced cone opening. The germinable seed portion, although quite important prior to the start of the rainy season, was rapidly depleted, and at the end of the rainy season it was virtually absent in both burned and unburned forests. It is therefore concluded that postfire Aleppo pine seedling recruitment takes place almost exclusively during the first year after the fire and depends upon the germination of seeds in a transient soil bank which is produced by the postfire dispersal of pine seeds stored in the canopy seed bank.

Early Stages of Plant Succession Following Forest Fires

Ecology ◽  
1929 ◽  
Vol 10 (2) ◽  
pp. 177-190 ◽  
Author(s):  
Alexander F. Skutch
Keyword(s):  
Forest Fires ◽  
Plant Succession ◽  
Early Stages

Effects of Four Low-Intensity Burns Over 14 Years on the Floristics of a Blackbutt (Eucalyptus pilularis) Forest in Southern Queensland

1996 ◽  
Vol 44 (3) ◽  
pp. 315 ◽  
Author(s):  
MJ Russell ◽  
BR Roberts
Keyword(s):  
Prescribed Burning ◽  
Lantana Camara ◽  
Imperata Cylindrica ◽  
Plant Succession ◽  
Grass Species ◽  
Data Sets ◽  
Prescribed Burn ◽  
Low Intensity ◽  
Eucalyptus Pilularis ◽  
Observation Period

A grassy open forest of Eucalyptus pilularis Smith, E. saligna Smith, and other eucalypts, with an understorey of Allocasuarina torulosa (Aiton) L.A.S.Johnson and Acacia spp., was studied by belt transect for 14 years. The forest, north of Toowoomba in Queensland, was divided by a fire break into a non-burned section and a section that had a low-intensity prescribed burn through it four times over the observation period. Cover of herbaceous species, measured with the intercept method, and density of perennial species were recorded six times in the burned section and seven times in the non-burned section over the observation period. There was no difference between burning treatments in cover or density of the species sampled nor in their diversity (Shannon index) over this period. Classification analysis of data sets of the whole transect did not show clear groups and ordination of these data sets produced axes related to distribution of major species. These analyses indicated spatial variability along the transect as was apparent in the field. Total cover of the main grass species confirmed this variability, but also showed changes in parts of the transect over the period that were ascribed to changes in cover of the shrub layer. Data suggested that low-intensity burning stimulated ecesis of Acacia spp. but did not affect density of Allocasuarina torulosa (Aiton) L.A.S.Johnson and young eucalypts in this forest. Burning kept Lantana camara L. bushes small compared with not burning. Covers of the major grasses, Microlaena stipoides (Labill.) R.Br., Themeda triandra Forssk and Imperata cylindrica (L.) Rauschel, were not different between burning treatments. It appears that low-intensity prescribed burning produced less change over the 14 year period than did no burning. Change in the non-burned section may be attributed to encroachment of the exotic species Lantana camara. This situation is discussed in relation to recent plant succession theory.

scholarly journals The implications of seed rain and seed bank patterns for plant succession at the edges of abandoned fields in Mediterranean landscapes

2006 ◽  
Vol 115 (1-4) ◽  
pp. 6-14 ◽  
Author(s):  
Elise Buisson ◽  
Thierry Dutoit ◽  
Franck Torre ◽  
Christine Römermann ◽  
Peter Poschlod
Keyword(s):  
Seed Bank ◽  
Seed Rain ◽  
Plant Succession ◽  
Abandoned Fields ◽  
Mediterranean Landscapes

Soil Seed Bank of a Jack Pine (Pinus Banksiana) Ecosystem

1998 ◽  
Vol 8 (2) ◽  
pp. 67 ◽  
Author(s):  
CA Whittle ◽  
LC Duchesne ◽  
T Needham
Keyword(s):  
Seed Bank ◽  
Pinus Banksiana ◽  
Soil Depth ◽  
Soil Seed Bank ◽  
Mineral Soil ◽  
Jack Pine ◽  
Plant Succession ◽  
Pteridium Aquilinum ◽  
Soil Cores

The soil seed bank (seed and vegetative propagules) of a jack pine (Pinus banksiana Lamb.) ecosystem was investigated using direct propagule emergence from soil cores in greenhouse experiments, and visual examination of rhizome/rooting systems in situ. Of the 985 emergents observed from soil cores 643 (65%) originated from seeds whereas 342 (35%) arose from rhizomes. Grasses and sedge comprised 89% of the seed emergents while shrubs comprised 75% of the vegetative emergents. In situ examination of root systems revealed that Linnaea borealis L., Carex houghtonii Torr., Gaultheria procumbens L., and Maianthemum canadense Desf. had rhizomes buried at or above the duff/mineral interface while Lycopodium obscurum L., Lycopodium complanatum L. and Pteridium aquilinum L. (Kuhn) were predominately buried within the upper- layers of mineral soil. All other vegetatively reproducing species examined, with the exception of Rubus alleghaniensis Porter, had rhizomes buried deeper than 25 cm into mineral soil. Rubus allegheniensis (reproductive roots) had no discrete area of burial and were located in duff, upper mineral, and deep mineral soil. Depth of burial of reproductive material is used to explain plant succession after disturbance.

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