Abstract
The Queens Domain, Hobart, is an area of grassy woodland that has been surrounded by urban development for over 70 years. Floristic and structural data were collected from 70 quadrats in both 1974 and 1984 to test whether the relatively high fertility, large size and compact shape of the reserve allowed it to avoid the dramatic deterioration of native vegetation that has been recorded for less favoured reserves in other Australian cities. Over the decade an increased incidence and spread of fire was associated with increased quadrat species richness, increases in tree density, especially of Casuarina stricta, and a decrease in the density of the larger size classes. However, despite large increases in exotic species richness in two out of three communities defined for the Domain its nature conservation value did not decline, as many of the species that increased in frequency over the decade were native herbs that are now rare in Tasmania. A high fire frequency or the reintroduction of large native herbivores may be necessary to encourage these species and to help prevent a thickening of the tree stratum.
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Claims 7
Claim · model-written summary
Increased incidence and spread of fire was associated with increased quadrat species richness over the decade.
Verbatim
e5“the dramatic deterioration of native vegetation that has been recorded for less favoured reserves in other Australian cities”
e1“Over the decade an increased incidence and spread of fire was associated with increased quadrat species richness, increases in tree density, especially of Casuarina stricta, and a decrease in the density of the larger size classes”
Claim · model-written summary
Tree density increased over the decade, especially of Casuarina stricta.
- Taxon
- Casuarina stricta
Casuarina strictae1 - Outcome
- tree densitye1
- Direction
- increasese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Over the decade an increased incidence and spread of fire was associated with increased quadrat species richness, increases in tree density, especially of Casuarina stricta, and a decrease in the density of the larger size classes”
Claim · model-written summary
The density of the larger size classes decreased over the decade.
Verbatim
e5“the dramatic deterioration of native vegetation that has been recorded for less favoured reserves in other Australian cities”
e1“Over the decade an increased incidence and spread of fire was associated with increased quadrat species richness, increases in tree density, especially of Casuarina stricta, and a decrease in the density of the larger size classes”
Claim · model-written summary
Exotic species richness increased in two out of three communities of the reserve.
Verbatim
e2“However, despite large increases in exotic species richness in two out of three communities defined for the Domain its nature conservation value did not decline, as many of the species that increased in frequency over the decade were native herbs that are now rare in Tasmania”
Claim · model-written summary
Despite increases in exotic species richness, the nature conservation value of the reserve did not decline.
Verbatim
e5“the dramatic deterioration of native vegetation that has been recorded for less favoured reserves in other Australian cities”
e2“However, despite large increases in exotic species richness in two out of three communities defined for the Domain its nature conservation value did not decline, as many of the species that increased in frequency over the decade were native herbs that are now rare in Tasmania”
Claim · model-written summary
Many native herbs that are now rare in Tasmania increased in frequency over the decade.
Verbatim
e2“However, despite large increases in exotic species richness in two out of three communities defined for the Domain its nature conservation value did not decline, as many of the species that increased in frequency over the decade were native herbs that are now rare in Tasmania”
Claim · model-written summary
A high fire frequency or reintroduction of large native herbivores may be necessary to encourage native herbs and prevent thickening of the tree stratum.
Verbatim
e2“as many of the species that increased in frequency over the decade were native herbs that are now rare in Tasmania”
e4“A high fire frequency or the reintroduction of large native herbivores may be necessary to encourage these species and to help prevent a thickening of the tree stratum”