Fire research abstracts and reviews Volume 13, 1971 (1971) / Chapter Skim
Currently Skimming:
Pages 154-163
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 154... ...
306 F I R E R E S E A R C H Statistics and Economics Buildmg Development and Regulations Structural and Material Fire Tests Extinguishmg Materials and Eqmpment Detection and Electrotechmcs Industrial and Toxic Hazards Technical Inquiries Overseas Activities Library and Pubhcations Lectures and Exhibitions Symposium General Committees Available from Her Majesty's Stationery Office, 49 High Holborn, London, England, Price 95 p TRANSLATION Trabaud, Louis (Phyto-^cologiste, docteiu- en ficologie, C E P.E, MontpeUier, France) "Some Measurements and Observation on the Phytodynamics of Burnt Areas m Bas-Languedoc (Southern France)
|
From page 155... ...
ABSTRACTS AND R E V I E W S 307 INTRODUCTION Fire IS a defimtive factor m the dynamics of plant life m the woods of the Mediterranean region In France numerous authors have studied the fire factor and its devastating effects, notably, for the Midi, Ribbe (1866, 1869) , Jacquemet (1907)
|
From page 156... ...
308 F I B E R E S E A R C H but having two different survival systems, resistant underground (live oak) or resistant aboveground (cork oak)
|
From page 157... ...
ABSTRACTS AND R E V I E W S 309 there with Aleppo pines about 4 m tall but of low coverage smce the kermfes oak occupied 95% of the surface Methods of Observing the Regeneration of Vegetation We used two methods to follow the process and regeneration (1) the first consisted of periodic observations made directly on the burnt areas, (2)
|
From page 158... ...
310 F I R E R E S E A R C H T A B L E 1 (CorUtnued) Pmewood Oak thicket 9/18/67 4/23/68 9/18/67 4/23/68 Type Type regeneration after fire Carex hallenana X X X X V R S AphyUanthes monspeliensts X X X X V R Quercus ilex X X X V R Lontcera tmplexa X X V R Aristolochia pistolochta X X X V R S Sonchus oleraceus X X A s Scorpiurus subtnllosus X X A s Argyrolobium hnnaeanum X X V s Thymus vulgaris X X V R s Crstus monspeliensis X X V s Psoralea httumtnosa X X V R Brachypodium phoenicoides X X V R Euphorbia serrata X V s Rubus vlmtfoltus X X V R Tonlis arvensis X A s Ononis mtnuhssirrui X V R s Rosmarinus officinalis X V s Pinus haleperms X V s Anagallts arvensis X A s Lagosens sancta X A s Eryngium campesire X V s Shoenus nigricans X X V R Sangmsorba minor X V s Crepis laraxacifoha X V s Gahum sp.
|
From page 159... ...
ABSTRACTS AND R E V I E W S 311 OBSERVATIONS MADE AT THE SAMPLING SITES -- TABLE 1 June 30, 1967 (14 days after the fire) no plants had resprouted or gerrmnated September 18, 1967, only a few perenmals -- those among the most abundant -- had resprouted I t is noteworthy that i t was the perenmals alone that reoccupied the free space On April 23, 1968, the pmewood had 50 species of perennials and the oak thicket only 30 species In Table 1 the symbols R and S represent the type of regeneration after the fire R, regrowth, in general from the stalk, S, seed I t appears of mterest to compare the two regions by keeping track of the type of regeneration of the species after the passage of the fire Three classes have been considered (a)
|
From page 160... ...
312 F I R E R E S E A R C H T A B L E 2 Number of seedhngs by species and by type (under glass) V=perennial, A=annual, and species normally absent in the plant population at the site Pinewood Oak thicket Ptnus Quercus Species halepensus coccifera Type Engeron naudim*
|
From page 161... ...
ABSTRACTS AND R E V I E W S 313 The remaining species, which are not common to the two groups, show that we have here two different plant communities. The coefficient of similarity of the two groups, determined by considering the species of seedhngs produced, is 28.6%, i t is thus fairly small The two lists of species produced from the soil samples do not have much in common In order to explam the germination, two possibihties can be considered The seeds of annuals as well as perennials could have been carried m durmg the four days between the date of the fire and the date of samplmg, or what is more likely, these seeds could have been stored in the soil (cf Guyot, 1968)
|
From page 162... ...
314 F I R E R E S E A R C H from the oak and the survey of the oak than between the samples of the oak and the survey of the pme (Table 3) T A B L E 3 Values of similarity coefficients between the experiments under glass and the surveys (Species reproducing by seed)
|
From page 163... ...
ABSTRACTS AND R E V I E W S 315 However, the proportion of perennial species reproducing vegetatively is so important in the two groups that a series of intermediate transition stages is not observed in the hwrni areas, although this would often be the case (Ahlgren, 1960, Floyd, 1966)
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.