Abstract
In A. capitata the protracted juvenile phase, the longevity of plants and their effective vegetative fire regeneration, are all possibly adaptively linked to poor sexual reproduction. After a fire-free period of more than ten years, averages of only 4.7 and 0.4 seedlings per plant were recruited following summer and winter burns, respectively. The positive correlation between the prevalence of fynbos fires from January to March and the germination response of soil-borne seeds when treated with smoke at different times of the year, suggest that the species has evolved in a fire-prone vegetation in a climate with a seasonal rainfall distribution similar to the present one. The vegetative vigour of shoots, the size and numbers of inflorescences, and seed set were increased by fire. The continuation of a policy of late autumn and winter burns may be fatal for survival of the species. Plants responded favourably to fire at a post-fire age of 11 years. Some populations, however, were still vigorous and sexually productive at a post-fire age of 20 years. Die uitgerekte jeugfase, die langlewendheid van plante en die effektiewe vegetatiewe vuurregenerasie in A. capitata, hou evolusionêr moontlik verband met gebrekkige geslagtelike voortplanting. Gemiddeld 4.7 saailinge per volwasse plant is na brande in die somer en gemiddeld 0.4 saailinge na ’n brand in die winter aangetref. Die positiewe verband tussen die natuurlike frekwensieverspreiding van fynbosvure vanaf Januarie tot Maart, en die ontkiemingspersentasie van saad in die grond wat op verskillende tye van die jaar met rook behandel is, dui daarop dat die spesie in ’n vuur-onderhewigeplantgemeenskap in ’n klimaat met ’n jaarlikse reënvalverspreiding soortgelyk aan die huidige een, ontwikkel het. Die vegetatiewe groeikrag van lote, die grootte en getalle van bloeiwyses, en saadset is deur vuur verhoog. Die voortsetting van ’n beleid van laatherfs- en winterbrande sal waarskynlik fataal wees vir die oorlewing van die spesie. Plante het gunstig op ’n brand 11 jaar na die vorige vuur gereageer. Sommige populasies was egter nog steeds groeikragtig en geslagtelik produktief op ’n na-vuurse ouderdom van 20 jaar.
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Claims 10
Claim · model-written summary
The juvenile phase, longevity and vegetative fire regeneration may be adaptively linked to poor sexual reproduction.
- Taxon
- A. capitata
Audouinia capitatae0 - Organ / stage
- juvenile phasee0
- Outcome
- poor sexual reproductione0
- Qualifier
- possibly adaptively linkede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In A. capitata the protracted juvenile phase, the longevity of plants and their effective vegetative fire regeneration, are all possibly adaptively linked to poor sexual reproduction.”
Claim · model-written summary
Summer burns recruited an average of 4.7 seedlings per plant after more than ten fire-free years.
- Taxon
- Audouinia capitataAudouinia capitatat0
- Treatment
- summere0
- Outcome
- seedlings per plant were recruitede0
- Value
- 4.7e0
- Qualifier
- fire-free period of more than ten yearse0
- Comparator
- winter burnse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After a fire-free period of more than ten years, averages of only 4.7 and 0.4 seedlings per plant were recruited following summer and winter burns, respectively.”
t0“Audouinia capitata”
Claim · model-written summary
Winter burns recruited an average of 0.4 seedlings per plant after more than ten fire-free years.
- Taxon
- Audouinia capitataAudouinia capitatat0
- Treatment
- winter burnse0
- Outcome
- seedlings per plant were recruitede0
- Value
- 0.4e0
- Comparator
- summere0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After a fire-free period of more than ten years, averages of only 4.7 and 0.4 seedlings per plant were recruited following summer and winter burns, respectively.”
t0“Audouinia capitata”
Claim · model-written summary
Seasonal prevalence of January–March fynbos fires correlated positively with smoke-treated seed germination response.
- Taxon
- Audouinia capitataAudouinia capitatat0
- Treatment
- smokee0
- Outcome
- germination response of soil-borne seedse0
- Direction
- positive correlatione0
- Qualifier
- fynbos fires from January to Marche0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The positive correlation between the prevalence of fynbos fires from January to March and the germination response of soil-borne seeds when treated with smoke at different times of the year”
t0“Audouinia capitata”
Claim · model-written summary
Fire increased vegetative vigour of shoots.
- Taxon
- Audouinia capitataAudouinia capitatat0
- Treatment
- firee0
- Outcome
- vegetative vigour of shootse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The vegetative vigour of shoots, the size and numbers of inflorescences, and seed set were increased by fire.”
t0“Audouinia capitata”
Claim · model-written summary
Fire increased the size and numbers of inflorescences.
- Taxon
- Audouinia capitataAudouinia capitatat0
- Treatment
- firee0
- Outcome
- size and numbers of inflorescencese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The vegetative vigour of shoots, the size and numbers of inflorescences, and seed set were increased by fire.”
t0“Audouinia capitata”
Claim · model-written summary
Fire increased seed set.
- Taxon
- Audouinia capitataAudouinia capitatat0
- Treatment
- firee0
- Outcome
- seed sete0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The vegetative vigour of shoots, the size and numbers of inflorescences, and seed set were increased by fire.”
t0“Audouinia capitata”
Claim · model-written summary
The authors warn that continuing late autumn and winter burns may be fatal for species survival.
- Taxon
- Audouinia capitataAudouinia capitatat0
- Outcome
- policy of late autumn and winter burnse0
- Qualifier
- may be fatal for survival of the speciese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The continuation of a policy of late autumn and winter burns may be fatal for survival of the species.”
t0“Audouinia capitata”
Claim · model-written summary
Plants responded favourably to fire at a post-fire age of 11 years.
- Taxon
- Audouinia capitataAudouinia capitatat0
- Treatment
- firee0
- Outcome
- responded favourablye0
- Qualifier
- post-fire age of 11 yearse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants responded favourably to fire at a post-fire age of 11 years.”
t0“Audouinia capitata”
Claim · model-written summary
Some populations remained vigorous and sexually productive at a post-fire age of 20 years.
- Taxon
- Audouinia capitataAudouinia capitatat0
- Outcome
- vigorous and sexually productivee0
- Qualifier
- post-fire age of 20 yearse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Some populations, however, were still vigorous and sexually productive at a post-fire age of 20 years.”
t0“Audouinia capitata”
The same questions in other papers
fire · growth · Audouinia capitataResults agree
1 paper in the same direction as this paper
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.