scholarly journals Role of serotiny on Pinus pinaster Aiton germination and its relation to mother plant age and fire severity

2019 ◽  
Vol 12 (6) ◽  
pp. 491-497 ◽  
Author(s):  
O Cruz ◽  
J García-Duro ◽  
M Casal ◽  
O Reyes
Keyword(s):  
Pinus Pinaster ◽  
Fire Severity ◽  
Plant Age ◽  
Mother Plant

scholarly journals Fire Severity Drives the Natural Regeneration of Cytisus scoparius L. (Link) and Salix atrocinerea Brot. Communities and the Germinative Behaviour of These Species

Forests ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 124 ◽  
Author(s):  
Óscar Cruz ◽  
Juan García-Duro ◽  
Sheila F. Riveiro ◽  
Candela García-García ◽  
Mercedes Casal ◽  
...  
Keyword(s):  
Natural Regeneration ◽  
Forest Restoration ◽  
Dominant Species ◽  
Fire Severity ◽  
Plant Age ◽  
Mother Plant ◽  
Individual Species ◽  
Cytisus Scoparius ◽  
Different Levels

Research Highlights: Data indicated that fire severity modulates natural regeneration of Cytisus scoparius and Salix atrocinerea communities and drives much stronger effects on the germination of the dominant species. Background and Objectives: Previous studies demonstrated that fire severity induces different behaviours in plant species. Mother plant age is an important feature that must also be considered in plans of forest restoration. The objectives were to determine, in field studies, the effect of fire severity on the natural regeneration of C. scoparius and S. atrocinerea communities, to know the role of mother plant age on the germination of seeds of C. scoparius and S. atrocinerea, and to quantify their germination response at different levels of fire severity, in laboratory settings. Material and Methods: We have analysed the role of fire severity on the natural regeneration of C. scoparius and S. atrocinerea communities considering cover and height. Forty 30 × 30 m plots were randomly located in C. scoparius and S. atrocinerea communities. Fire severity on the germination of dominant species was tested through different levels of smoke, charcoal, ash, and heat. Results: High severity reduced the vertical cover and growth in height of the two communities and favoured the increase of cover of woody species in the C. scoparius community and herbaceous species in the S. atrocinerea community. Mother plant age determined germination percentages of C. scoparius seeds. Germination of C. scoparius was increased by moderate heat, and heat and smoke; and fire severity greatly reduced germination of S. atrocinerea. Conclusions: The regeneration responses after fire were largely controlled by interactions between the fire severity and the individual species regeneration strategies. For restoration purposes, C. scoparius seeds should be treated with 80 °C and smoke for 10 min, in order to increase germination; however, Salix seeds should be used without treatment and immediately after dispersion.

scholarly journals Fire severity as a key factor in post-fire regeneration of Pinus pinaster (Ait.) in Central Portugal

2012 ◽  
Vol 69 (4) ◽  
pp. 489-498 ◽  
Author(s):  
Paula Maia ◽  
Juli G. Pausas ◽  
Ana Vasques ◽  
Jan Jacob Keizer
Keyword(s):  
Pinus Pinaster ◽  
Fire Severity ◽  
Pinus Pinaster Ait ◽  
Key Factor ◽  
Central Portugal

scholarly journals The Role of Population Origin and Microenvironment in Seedling Emergence and Early Survival in Mediterranean Maritime Pine (Pinus pinaster Aiton)

PLoS ONE ◽  
2014 ◽  
Vol 9 (10) ◽  
pp. e109132 ◽  
Author(s):  
Natalia Vizcaíno-Palomar ◽  
Bárbara Revuelta-Eugercios ◽  
Miguel A. Zavala ◽  
Ricardo Alía ◽  
Santiago C. González-Martínez
Keyword(s):  
Pinus Pinaster ◽  
Seedling Emergence ◽  
Maritime Pine ◽  
Population Origin ◽  
Early Survival

scholarly journals Fire Severity Influences Ecophysiological Responses of Pinus pinaster Ait

2019 ◽  
Vol 10 ◽  
Author(s):  
Francesco Niccoli ◽  
Assunta Esposito ◽  
Simona Altieri ◽  
Giovanna Battipaglia
Keyword(s):  
Pinus Pinaster ◽  
Fire Severity ◽  
Pinus Pinaster Ait ◽  
Ecophysiological Responses

Implications of changing climate for global wildland fire

2009 ◽  
Vol 18 (5) ◽  
pp. 483 ◽  
Author(s):  
Mike D. Flannigan ◽  
Meg A. Krawchuk ◽  
William J. de Groot ◽  
B. Mike Wotton ◽  
Lynn M. Gowman
Keyword(s):  
Wildland Fire ◽  
Fire Severity ◽  
Global Studies ◽  
Future Trends ◽  
Fire Occurrence ◽  
General Increase ◽  
Area Burned ◽  
Fire Activity ◽  
Linear Interactions

Wildland fire is a global phenomenon, and a result of interactions between climate–weather, fuels and people. Our climate is changing rapidly primarily through the release of greenhouse gases that may have profound and possibly unexpected impacts on global fire activity. The present paper reviews the current understanding of what the future may bring with respect to wildland fire and discusses future options for research and management. To date, research suggests a general increase in area burned and fire occurrence but there is a lot of spatial variability, with some areas of no change or even decreases in area burned and occurrence. Fire seasons are lengthening for temperate and boreal regions and this trend should continue in a warmer world. Future trends of fire severity and intensity are difficult to determine owing to the complex and non-linear interactions between weather, vegetation and people. Improved fire data are required along with continued global studies that dynamically include weather, vegetation, people, and other disturbances. Lastly, we need more research on the role of policy, practices and human behaviour because most of the global fire activity is directly attributable to people.

Effect of mother plant age on germination and size of seeds and seedlings in the perennial sedge Carex secalina (Cyperaceae)

Flora ◽  
2011 ◽  
Vol 206 (2) ◽  
pp. 158-163 ◽  
Author(s):  
Marlena Lembicz ◽  
Paweł Olejniczak ◽  
Waldemar Żukowski ◽  
Agnieszka M. Bogdanowicz
Keyword(s):  
Plant Age ◽  
Mother Plant

Seed Bank Dynamics of Three Co-Occurring Banksias in South Coastal Western Australia: the Role of Plant Age, Cockatoos, Senescence and Interfire Establishment.

1991 ◽  
Vol 39 (4) ◽  
pp. 385 ◽  
Author(s):  
ETF Witkowski ◽  
BB Lamont ◽  
SJ Connell
Keyword(s):  
Western Australia ◽  
Seed Bank ◽  
Quadratic Function ◽  
Seed Storage ◽  
Plant Age ◽  
The Other ◽  
Age Cohorts ◽  
Seed Bank Dynamics ◽  
Order Of Magnitude

Seed bank dynamics of three co-occurring, non-sprouting Banksia species (B. baxteri, B. speciosa and B. coccinea) in patch-burnt scrub-heath (aged 10 and 21 years) were studied in the southern sandplains of Western Australia. In the younger plants, canopy seed storage was highest in B. coccinea. However, 21-year-old B. coccinea stored an order of magnitude fewer seeds than the other species and no more than young B. coccinea. Seed storage per year increased exponentially with plant age in B. speciosa and B. baxteri, whereas a quadratic function, peaking at 16 years, best described seed storage in B. Coccinea. Degree of serotiny was lowest in B. coccinea. Seed abortion did not vary between age cohorts but was highest in B. coccinea. Granivory ranged from 18 to 42% and was highest in the older plants and in B. baxteri. Cockatoos removed about 20% of cones in B. baxteri and B. coccinea and 10% in B. speciosa. Experimental cone removal accelerated follicle opening, especially in B. coccinea, irrespective of whether cones were placed on the ground (simulating cockatoo removal) or reattached to the plant (simulating plant death). Half the 21-year-old B. coccinea were dead and the remainder were considered senescent, as most branches showed dieback and cone fertility had fallen to 8%. Death of the other species was negligible, with cone fertility rising to a mean of 45% (B. speciosa) and 66% (B. baxteri). Interfire establishment was significant only in B. coccinea. The build-up of a viable seed bank with time occurred at a slower rate than for non-sprouting banksias in the northern sandplains.

scholarly journals Seed germination in sedges: a short review

2010 ◽  
Vol 19 (1) ◽  
pp. 15-22 ◽  
Author(s):  
Waldemar Żukowski ◽  
Agnieszka Bogdanowicz ◽  
Marlena Lembicz
Keyword(s):  
Seed Germination ◽  
Low Temperature ◽  
Seed Size ◽  
Short Review ◽  
Plant Age ◽  
Mother Plant ◽  
Controlled Conditions ◽  
Mother Plants ◽  
High Or Low Temperature

Seed germination in sedges: a short reviewFive patterns of seed germination in the sedges of the genusCarexare presented, based on the literature data and the results of the authors' own research. They include the pattern ofC. acutiformis, C. arenaria, C. remota, C. flavaandC. communis. These patterns were constructed on the basis of seed specific requirements for development, such as stratification, temperature, dormancy and time of germination. Majority of sedges follow the pattern ofC. acutiformisorC. remota. In both cases, stratification and either high or low temperature are essential for seed germination. Seeds that start to germinate early (C. remotapattern) are characterized by the absence of the distinct peaks of germination, as opposed to theC. acutiformispattern with the germination peak in March. Our long-term investigations, conducted on the group of individuals in controlled conditions, revealed significant differences in seed size and the ability of seeds to germinate depending on the age of mother plants. We postulate that mother plant age is a new factor that should be considered in the construction of seed germination patterns.

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