Abstract
The study reports the composition of the crop and growth pattern of important species in terms of height, density, diameter and basal area during the rotation period in some productive stands of the Matang Mangrove Reserve of Peninsular Malaysia. In all, seven stands representing areas before thinning J, thinning II, thinning III and before final felling were sampled. A II the sites were potential Rhizophora spp. stands belonging to Watson's inundation classes II and III. The crop was almost pure and uniform, dominated by Rhizophora apiculata. Brugiera parviflora, the most important associate was found to constitute less than 10 per cent of the crop in most of the sampled plots. On an average, there were 3236, 2107, 1321 and 830 stems per hectare before thinning I, II, III and final felling respectively. Mean DBH for the respective stages were 8.28 em, 9.65 em, 13.90 em and 17.45 em. When compared with earlier estimates, it appears that there is a large scale mortality between 2 and 15 years of crop. There is a need to study the mortality rate and its causes during this period which might have a bearing on the thinning schedules and rotation period.
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Claims 5
Claim · model-written summary
The crop was almost pure and uniform, dominated by Rhizophora apiculata.
- Taxon
- Rhizophora apiculata
Rhizophora apiculatae1 - Outcome
- composition of the crope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The study reports the composition of the crop”
e1“The crop was almost pure and uniform, dominated by Rhizophora apiculata”
Claim · model-written summary
Brugiera parviflora, the most important associate, constituted less than 10 per cent of the crop in most sampled plots.
Verbatim
e2“Brugiera parviflora, the most important associate was found to constitute less than 10 per cent of the crop in most of the sampled plots”
Claim · model-written summary
Stems per hectare fell from 3236 before thinning I to 830 before final felling, across the four stages.
- Taxon
- Rhizophora spp.
Rhizophorae4 - Organ / stage
- before thinning I, II, III and final fellinge3
- Outcome
- stems per hectaree3
- Direction
- decreaseinferrede3
- Value
- 3236, 2107, 1321 and 830 stems per hectaree3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“On an average, there were 3236, 2107, 1321 and 830 stems per hectare before thinning I, II, III and final felling respectively”
e4“potential Rhizophora spp. stands”
Claim · model-written summary
Mean DBH rose from 8.28 cm before thinning I to 17.45 cm before final felling, across the four stages.
- Taxon
- Rhizophora spp.Rhizophorae4
- Organ / stage
- before thinning I, II, III and final fellinge3
- Outcome
- Mean DBHe5
- Direction
- increaseinferrede5
- Value
- 8.28 em, 9.65 em, 13.90 em and 17.45 eme5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Mean DBH for the respective stages were 8.28 em, 9.65 em, 13.90 em and 17.45 em”
e3“before thinning I, II, III and final felling”
e4“potential Rhizophora spp. stands”
Claim · model-written summary
The authors infer a large-scale stand mortality between 2 and 15 years of crop age, from comparison with earlier estimates.
- Taxon
- Rhizophora spp.Rhizophorae4
- Outcome
- large scale mortalitye6
- Qualifier
- between 2 and 15 years of crope6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“there is a large scale mortality between 2 and 15 years of crop”
e4“potential Rhizophora spp. stands”