Abstract
Sustainable management of freshwater reptiles in West Africa Sahel is affected by great data scarcity, regional data gaps mostly about the crocodile’s species like Crocodylus suchus. Thus, this study addresses these gaps by determining the floristic diversity and characterizing the habitat of Crocodylus suchus in the Niger River in the Niamey region. We used a systematic random sampling for the floristic inventory using the Brun-Blanquet method. We recorded 58 plant species belong 22 families and 43 genera with a predominance of Eichhornia crassipes (12.32%) and Echinochloa stagnina (12.42%) which varies significantly across the area (P < 0.05). The others have a frequency of 5% or less. Approximately 40 species have a low frequency, with a percentage less than 1%. The macrophytes are 58.54% dicotyledons and 41.46% monocotyledons. The most represented families are Poaceae (29.76%), Convolvulaceae (16.10%), followed by Pontederaceae and Cucurbitaceae at 13.41% and 12.93%, respectively. Ecosystem classification based on species richness revealed two distinct groups of habitats, with similarities between the islands and the right bank. The results also showed that the observation frequency and cumulative mean cover of species vary very significantly across the area (P< 2.2e-16). Dominant species such as Echinochloa stagnina, Mimosa pigra and Eichhornia crassipes have high cover at 1.95%, 1.86%, and 1.33%, respectively. The dominant families are represented by stable and prolific species, with an abundance of prolific species in the Convolvulaceae family. This study has characterized the floristic diversity of the crocodile habitat, highlighting the dominant species and plant communities present. Further research would be useful to better understand the environmental factors and ecological processes that influence the floristic composition and structure of plant communities in this habitat. Management and conservation strategies could be developed to maintain biological diversity and prevent negative impacts on the ecosystem, taking these results into account.
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Claims 16
Claim · model-written summary
The habitat contained 58 plant species in 22 families and 43 genera.
Verbatim
e0“We recorded 58 plant species belong 22 families and 43 genera”
Claim · model-written summary
Eichhornia crassipes accounted for 12.32% of occurrences.
Verbatim
e0“Eichhornia crassipes (12.32%) and Echinochloa stagnina (12.42%) which varies significantly across the area”
Claim · model-written summary
Echinochloa stagnina accounted for 12.42% of occurrences.
- Taxon
- Echinochloa stagnina
Echinochloa stagninae0 - Outcome
- Echinochloa stagninae0
- Value
- 12.42%e0
- Setting
- the areae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Eichhornia crassipes (12.32%) and Echinochloa stagnina (12.42%) which varies significantly across the area”
Claim · model-written summary
Approximately 40 species had frequency below 1%.
Verbatim
e0“Approximately 40 species have a low frequency, with a percentage less than 1%.”
Claim · model-written summary
Macrophytes comprised 58.54% dicotyledons.
Verbatim
e0“The macrophytes are 58.54% dicotyledons and 41.46% monocotyledons.”
Claim · model-written summary
Macrophytes comprised 41.46% monocotyledons.
Verbatim
e0“The macrophytes are 58.54% dicotyledons and 41.46% monocotyledons.”
Claim · model-written summary
Poaceae represented 29.76% of families.
Verbatim
e0“Poaceae (29.76%), Convolvulaceae (16.10%), followed by Pontederaceae and Cucurbitaceae at 13.41% and 12.93%”
Claim · model-written summary
Convolvulaceae represented 16.10%.
- Taxon
- ConvolvulaceaeConvolvulaceaee0
- Outcome
- Convolvulaceaee0
- Value
- 16.10%e0
Verbatim
e0“Poaceae (29.76%), Convolvulaceae (16.10%), followed by Pontederaceae and Cucurbitaceae at 13.41% and 12.93%”
Claim · model-written summary
Pontederaceae represented 13.41%.
Verbatim
e0“Pontederaceae and Cucurbitaceae at 13.41% and 12.93%, respectively”
Claim · model-written summary
Cucurbitaceae represented 12.93%.
- Taxon
- CucurbitaceaeCucurbitaceaee0
- Outcome
- Cucurbitaceaee0
- Value
- 12.93%e0
Verbatim
e0“Pontederaceae and Cucurbitaceae at 13.41% and 12.93%, respectively”
Claim · model-written summary
Species richness separated habitat into two groups, with island and right-bank similarity.
Verbatim
e0“Ecosystem classification based on species richness revealed two distinct groups of habitats, with similarities between the islands and the right bank.”
Claim · model-written summary
Species observation frequency and cover varied across the area.
Verbatim
e0“observation frequency and cumulative mean cover of species vary very significantly across the area (P< 2.2e-16)”
Claim · model-written summary
Echinochloa stagnina had 1.95% cover.
- Taxon
- Echinochloa stagninaEchinochloa stagninae0
- Outcome
- covere0
- Direction
- highe0
- Value
- 1.95%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Echinochloa stagnina, Mimosa pigra and Eichhornia crassipes have high cover at 1.95%, 1.86%, and 1.33%, respectively”
Claim · model-written summary
Mimosa pigra had 1.86% cover.
- Taxon
- Mimosa pigra
Mimosa pigrae0 - Outcome
- covere0
- Direction
- highe0
- Value
- 1.86%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Echinochloa stagnina, Mimosa pigra and Eichhornia crassipes have high cover at 1.95%, 1.86%, and 1.33%, respectively”
Claim · model-written summary
Eichhornia crassipes had 1.33% cover.
Verbatim
e0“Echinochloa stagnina, Mimosa pigra and Eichhornia crassipes have high cover at 1.95%, 1.86%, and 1.33%, respectively”
Claim · model-written summary
Prolific species were abundant in Convolvulaceae.
- Taxon
- ConvolvulaceaeConvolvulaceaee0
- Outcome
- abundance of prolific speciese0
Verbatim
e0“an abundance of prolific species in the Convolvulaceae family”