Abstract
Population densities of Phytophthora cinnamomi Rands were measured at 10-day intervals during a period of 13 months at three sites in the Brisbane Ranges. Statistical analyses of results and of simultaneous metereological measurements demonstrated that both low temperatures and dry soils were correlated with a significant decrease in pathogen population. Disease extension occurred uphill on a slope of 4" at 6 . 6 m per year, but only from recent infection. Population densities of older sites were significantly less than that of the new site and no measurable disease extension occurred uphill from them. Disease caused an immediate and continuing reduction in understorey in both the number of species and the ground cover and, in the long term, a reduction in both wood production and the number of trees as the dense dry sclerophyll shrubby forest was changed to an open woodland.
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Claims 9
Claim · model-written summary
Low temperatures correlated with a significant decrease in pathogen population.
- Taxon
- Native Forestst0
- Interactor
- Phytophthora cinnamomi
Phytophthora cinnamomie2pathogene0 - Outcome
- pathogen populatione0
- Direction
- decreasee0
- Setting
- Brisbane Rangest1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both low temperatures and dry soils were correlated with a significant decrease in pathogen population.”
t0“Native Forests”
t1“Brisbane Ranges”
e2“Phytophthora cinnamomi”
Claim · model-written summary
Dry soils correlated with a significant decrease in pathogen population.
- Taxon
- Native Forestst0
- Interactor
- Phytophthora cinnamomiPhytophthora cinnamomie2pathogene0
- Outcome
- pathogen populatione0
- Direction
- decreasee0
- Setting
- Brisbane Rangest1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both low temperatures and dry soils were correlated with a significant decrease in pathogen population.”
t0“Native Forests”
t1“Brisbane Ranges”
e2“Phytophthora cinnamomi”
Claim · model-written summary
Disease extended uphill at 6 . 6 m per year only from recent infection.
Verbatim
e0“Disease extension occurred uphill on a slope of 4" at 6 . 6 m per year, but only from recent infection.”
t0“Native Forests”
Claim · model-written summary
Older sites had significantly lower pathogen densities than the new site.
Verbatim
e0“Population densities of older sites were significantly less than that of the new site”
t0“Native Forests”
Claim · model-written summary
No measurable uphill disease extension occurred from older sites.
Verbatim
e0“no measurable disease extension occurred uphill from them.”
t0“Native Forests”
Claim · model-written summary
Disease immediately and continuously reduced understorey species number.
Verbatim
e0“Disease caused an immediate and continuing reduction in understorey in both the number of species and the ground cover”
t0“Native Forests”
Claim · model-written summary
Disease immediately and continuously reduced understorey ground cover.
Verbatim
e0“Disease caused an immediate and continuing reduction in understorey in both the number of species and the ground cover”
t0“Native Forests”
Claim · model-written summary
Disease reduced long term wood production.
Verbatim
e0“in the long term, a reduction in both wood production and the number of trees”
t0“Native Forests”
Claim · model-written summary
Disease reduced long term tree number.
Verbatim
e0“in the long term, a reduction in both wood production and the number of trees”
t0“Native Forests”