Abstract
Background. The aim of this research is to identify plant species that constitute the vegetation and species abundance in ex-bauxite mining land in Tanjungpinang City, Riau Islands Province, Indonesia. Objective. To identify vegetation composition and species abundance on ex-bauxite mining land. Methodology A nested plot sampling method was used to randomly identify the species at two ex-bauxite mining sites (Dompak and Senggarang) and a non mining site in Senggarang. Each site, measuring 1x1 meter, with 12, 14, and 12 plots were also examined using the understory plant samples. Furthermore, observations were made on the morphological characteristics of plants to determine the herbarium preparation process, identify the species, and validate the scientific names of plants. Results. The research found that understory plants in the three sites consisted of 17 families with 24 species with the Cyperaceae family contributing five more species than any other families. The three species with the highest importance value indices at each site were: at Dompak namely, Poaceae (51%), Waltheria indica (26.50%), and Dicranopteris linearis (21.80%); at Senggarang, Palhinhaea cernua (37.10%), D. linearis (37.02%), and Poaceae (36.37%); and the not a former bauxite mine site in Senggarang is D. linearis (70,00%), Poaceae (64.00%), and Melastoma malabathricum (23.07%). The Sorensen similarity index values for the three locations were 46.7% for the Dompak and Senggarang sites, 41.7% for the Dompak site and the non-former bauxite mining site, and 50% for the Senggarang site and the non-former bauxite mining site, respectively. Implications. Morphological species identification and herbarium preparation were used to identify and validate the vegetation composition on the former bauxite mining land in Tanjungpinang. The data obtained is valuable for understanding the natural recovery patterns of the land and provides insight into species suitable for further rehabilitation in the Riau Islands. The result showed that invasive species such as Poaceae and Dicranopteris linearis should be prioritized in revegetation programs. The research also addresses a gap in scientific knowledge regarding critical species for the successful rehabilitation of degraded lands. Conclusion. The research found that understory plants in the three sites consisted of 17 families with 24 species. The importance value index at each site was 51% for Poaceae (at Dompak), 37.10% for P. cernua (at Senggarang), and 70% for D. linearis (at non-former bauxite mine site in Senggarang). The Sorensen similarity index values for the three sites were 46.7%, 41.7%, and 50% for the Dompak and Senggarang sites, Dompak, and the non-former bauxite mining sites.
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Claims 16
Claim · model-written summary
The sites contained 17 families and 24 understory species.
Verbatim
e0“understory plants in the three sites consisted of 17 families with 24 species with the Cyperaceae”
Claim · model-written summary
The sites contained 24 understory species.
Verbatim
e0“understory plants in the three sites consisted of 17 families with 24 species with the Cyperaceae”
Claim · model-written summary
Cyperaceae contributed five more species than other families.
- Taxon
- CyperaceaeCyperaceaee0
- Outcome
- speciese0
- Value
- five more speciese0
Verbatim
e0“the Cyperaceae family contributing five more species than any other families”
Claim · model-written summary
Poaceae had a 51% importance index at Dompak.
Verbatim
e0“at Dompak namely, Poaceae (51%)”
e1“importance value indices at each site”
Claim · model-written summary
Waltheria indica had a 26.50% importance index at Dompak.
- Taxon
- Waltheria indica
Waltheria indicae0 - Outcome
- importance value indicese1
- Value
- 26.50%e0
- Setting
- Dompake1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Waltheria indica (26.50%)”
e1“importance value indices at each site were: at Dompak”
Claim · model-written summary
Dicranopteris linearis had a 21.80% importance index at Dompak.
- Taxon
- Dicranopteris linearis
Dicranopteris linearise0 - Outcome
- importance value indicese1
- Value
- 21.80%e0
- Setting
- Dompake1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dicranopteris linearis (21.80%)”
e1“importance value indices at each site were: at Dompak”
Claim · model-written summary
Palhinhaea cernua had a 37.10% importance index at Senggarang.
- Taxon
- Palhinhaea cernua
Palhinhaea cernuae0 - Outcome
- importance value indicese1
- Value
- 37.10%e0
- Setting
- Senggarange0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at Senggarang, Palhinhaea cernua (37.10%)”
e1“importance value indices at each site”
Claim · model-written summary
D. linearis had a 37.02% importance index at Senggarang.
- Taxon
- D. linearisDicranopteris linearise0
- Outcome
- importance value indicese2
- Value
- 37.02%e0
- Setting
- Senggarange1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“D. linearis (37.02%)”
e1“at Senggarang, Palhinhaea cernua”
e2“importance value indices at each site”
Claim · model-written summary
Poaceae had a 36.37% importance index at Senggarang.
Verbatim
e0“Poaceae (36.37%)”
e1“at Senggarang, Palhinhaea cernua”
e2“importance value indices at each site”
Claim · model-written summary
D. linearis had a 70,00% importance index at the non-mine site.
- Taxon
- D. linearisDicranopteris linearise0
- Outcome
- importance value indicese2
- Value
- 70,00%e0
- Setting
- Senggarange1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“D. linearis (70,00%)”
e1“the not a former bauxite mine site in Senggarang is”
e2“importance value indices at each site”
Claim · model-written summary
Poaceae had a 64.00% importance index at the non-mine site.
Verbatim
e0“Poaceae (64.00%)”
e1“the not a former bauxite mine site in Senggarang is”
e2“importance value indices at each site”
Claim · model-written summary
Melastoma malabathricum had a 23.07% importance index at the non-mine site.
- Taxon
- Melastoma malabathricum
Melastoma malabathricume0 - Outcome
- importance value indicese2
- Value
- 23.07%e0
- Setting
- Senggarange1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Melastoma malabathricum (23.07%)”
e1“the not a former bauxite mine site in Senggarang is”
e2“importance value indices at each site”
Claim · model-written summary
Dompak and Senggarang had 46.7% Sorensen similarity.
Verbatim
e0“46.7% for the Dompak and Senggarang sites”
e1“Sorensen similarity index values for the three locations”
e2“understory plants in the three sites consisted of 17 families with 24 species with the Cyperaceae”
Claim · model-written summary
Dompak and the non-mine site had 41.7% Sorensen similarity.
Verbatim
e0“41.7% for the Dompak site and the non-former bauxite mining site”
e1“Sorensen similarity index values for the three locations”
e2“understory plants in the three sites consisted of 17 families with 24 species with the Cyperaceae”
Claim · model-written summary
Senggarang and the non-mine site had 50% Sorensen similarity.
Verbatim
e0“50% for the Senggarang site and the non-former bauxite mining site”
e1“Sorensen similarity index values for the three locations”
e2“understory plants in the three sites consisted of 17 families with 24 species with the Cyperaceae”
Claim · model-written summary
The authors recommend prioritizing Poaceae and Dicranopteris linearis for revegetation.
- Outcome
- prioritized in revegetation programse0
Verbatim
e0“invasive species such as Poaceae and Dicranopteris linearis should be prioritized in revegetation programs”