Claim · model-written summary
Diversity and dominance indices of tree species were unrelated to forest fragment size.
- Taxon
- tree speciese1
- Treatment
- fragment sizee3
- Outcome
- diversity and dominance indicese3
- Direction
- no_changeinferrede3
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Verbatim
e1“A total of 45 tree species were recorded from all the fragments”
e3“Other measures such as stand density, basal cover, diversity and dominance indices were unrelated to fragment size”
Title
Prakash Tripathi Om; Rangdajied Reynald Khongjee Biodiversity Science 2010. doi:10.3724/sp.j.1003.2010.222
Other claims from this paper (12)
- Association Species richness of tree species was positively related to forest fragment size.
- Association Stand density and basal cover of tree species were unrelated to forest fragment size.
- Observation A majority of woody tree species were contagiously distributed, making the forest community highly patchy.
- Observation Between the fragments, low Sorensen similarity and high Whittaker beta-diversity indicate marked difference in tree species composition.
- Observation The maximum stand density, basal area and Shannon diversity index of tree species were recorded in the 5-ha fragment.
- Observation The maximum Simpson dominance index of tree species was recorded in the 5-ha fragment.
- Observation Trees in lower girth classes accounted for 52-86% of stand density in all fragments except the 0.5-ha fragments.
- Observation In the 0.5-ha fragments, middle girth class trees accounted for 47% of total stand density.
- Observation The overall density of seedlings, saplings and adult trees formed a pyramidal structure.
- Observation The sapling-to-adult period was the critical stage in tree life cycles, with maximum mortality during this period.
- Observation Tree regeneration was not limited, as shown by a high density of saplings.
- Mechanism Human activities may have decreased tree diversity in the smaller fragments.