Species richness, distribution pattern, and conservation status of amphibians in Cross River National Park, south‐eastern Nigeria

Nneji, Lotanna M.; Adeola, Adeniyi C.; Adedeji, Babatunde E.; Omotoso, Olatunde; Onadeko, Abiodun B.; Eniang, Edem A.; Ayoola, Adeola O.; Adeniyi, A; Okeyoyin, Agboola O.; Oladipo, Segun O.; Usongo, John Y.; Rahman, M. M.; Bassey, Andem; Nneji, Ifeanyi C.; Ugwumba, O. A.; Ugwumba, A. A. A.; Adeyi, Akindele Oluwatosin; Olory, Caroline

doi:10.1007/s11756-021-00751-8

Cited by 6 publications

(10 citation statements)

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“…A growing body of studies (e.g. Blyth et al, 2002;Burgess et al, 2002Burgess et al, , 2007Chidumayo et al, 2011;Nneji et al, 2019;Plumptre et al, 2004) has reported adverse effects of habitat alteration on the temporal and spatial compositions of vertebrates. These considerations underscore the urgent need for improved conservation plans for endemic amphibians and their associated habitats in the GC region.…”

Section: Discussionmentioning

confidence: 99%

“…The data that support the findings of this study are available in the main text and supplementary material of this article. Scripts and datasets used are available on Dryad (Nneji et al (2019), patterns of species richness and turnover in endemic amphibians of the Guineo‐Congolian rain forest. Dryad, Dataset, https://doi.org/10.5061/dryad.8931zcrv9).…”

Section: Peer Reviewmentioning

confidence: 99%

Section: Peer R E V I E Wmentioning

confidence: 99%

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Patterns of species richness and turnover in endemic amphibians of the Guineo‐Congolian rain forest

Nneji

Azevedo

Oyebanji

et al. 2023

Diversity and Distributions

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Aim:The African Guineo-Congolian (GC) region is a global biodiversity hotspot with high species endemism, bioclimatic heterogeneity, complex landscape features, and multiple biogeographic barriers. Bioclimatic and geographic variables influence global patterns of species richness and endemism, but their relative importance varies across taxa and regions and is poorly understood for many faunas. Here, we test the hypothesis that turnover in endemic amphibians of the GC biodiversity hotspot is influenced mainly by the geographic distance between grid cells and secondarily by rainfall-and temperature-related variables.Location: West and Central Africa.Major Taxa Studied: Amphibians. Methods:We compiled species-occurrence records via field sampling, online databases, and taxonomic literature. Our study used 1205 unique georeferenced records of 222 amphibian species endemic to the GC region. Patterns of species richness were mapped onto a grid with a spatial resolution of 0.5° × 0.5°. We estimated weighted endemism and tested whether endemism was higher than the expected species richness (randomization test). We quantified species turnover using generalized dissimilarity modelling to evaluate the processes underlying observed patterns of species richness in GC endemic amphibians. We explored bioregionalization using agglomerative hierarchical clustering based on the unweighted pair group method with arithmetic averages. Results: We identified seven areas within the lower GC region -forests in Cameroon, Gabon, Southern Nigeria, Equatorial Guinea, Republic of Congo, Democratic Republic of Congo, and Cote d'Ivoire -as having high species richness of endemic amphibians. The randomization test returned four major areas of significant weighted endemism: Nigeria-Cameroon mountains, forest regions of the Democratic Republic of Congo, Cote d'Ivoire, and Ghana. Our analysis revealed five bioregions for amphibian

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Section: Discussionmentioning

confidence: 99%

Section: Peer Reviewmentioning

confidence: 99%

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Patterns of species richness and turnover in endemic amphibians of the Guineo‐Congolian rain forest

Nneji

Azevedo

Oyebanji

et al. 2023

Diversity and Distributions

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“…Appropriate anuran species conservation and management measures in protected and non‐protected areas rely on the knowledge of their biodiversity and habitat preferences (Boyd et al., 2008; Nneji et al., 2021; Rahman et al., 2020), therefore, understanding the consequences of habitat change for biodiversity is critical. Currently, protected area network is insufficient to safeguard the majority of species in the World (Stuart et al., 2004), and their persistence depends upon the effectiveness of conservation action plans (Daily, 2001; Onga'oa et al., 2013; Vandermeer & Perfecto, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…Nneji et al (2019) andDrayer and Richter (2016), and Muro-Torres et al (2020) also found that wetlands in protected reserves inhabits different anuran species. Their argument is based on the availability of healthy productive microhabitats providing diverse variabilities of food sources.…”

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confidence: 96%

Anthropogenic effects of habitat modification on anuran species diversity in a swamp forest area, Kenya

Kabanze,

Kimanzi,

Malonza

et al. 2023

Afr J Ecol

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Anuran species are some of the good environmental indicators of habitat quality and condition in ecosystems. This is due to their amphibious life modes and sensitivity to environmental change caused by rapid expansion of agricultural activities, advancement of forest destruction, climate change and emerging infectious diseases. Understanding their diversity and distribution patterns is crucial for the development and implementation of effective species and habitat conservation strategies. The study aimed at assessing and comparing anuran biodiversity and distribution patterns between a protected (North Nandi Forest Reserve) and a non‐protected area (Kingwal swamp) to provide additional baseline information, both being among the underexplored areas in Kenya. Data were gathered in both dry and wet seasons, between October 2022 and June 2023 by employing standard sampling techniques for anurans(Visual encounter and pitfall traps with a drift fence) to maximise detection. Three habitat types‐ farmland, intermediate land and forest were exploited. A total of 1649 individuals from 21 different species, belonging to nine different genera and nine different families were recorded. Ptychadenidae was the most abundant family from the recorded anurans, while Dicroglossidae, Arthroleptidae, Pyxicephalidae and Ranidae were the least. High biodiversity was observed in the forest habitat (Protected) and least in the farmland (non‐protected). The wet season had high species abundance, diversity and richness compared to the dry season. There was a significant difference (p < 0.05) in diversity between the habitats in wet season, but no significance difference during dry season (p > 0.05) except for forest and farmland (p < 0.05). There was a significant difference in species abundance between seasons (p < 0.05), and between habitats (p < 0.05) in all seasons except for farmland and intermediate (p > 0.05), as well as farmland and forest (p > 0.05) during the wet season. Habitat type and season had no influence (p > 0.05) on species richness. Anuran biodiversity is a function of habitat diversity and season, with the associated differences in microhabitat structure providing diverse niches and ways of exploring resources. The modest sampling indicates that Kingwal Swamp and North Nandi Forest Reserve are rich and support anuran species, and the differences in anuran biodiversity between the 3 habitats demonstrates that conservation efforts continue to be a priority.

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Microplastics as an emerging threat to amphibians: Current status and future perspectives

Rahman,

Kim,

Sung

2024

Heliyon

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Species richness, distribution pattern, and conservation status of amphibians in Cross River National Park, south‐eastern Nigeria

Cited by 6 publications

References 50 publications

Patterns of species richness and turnover in endemic amphibians of the Guineo‐Congolian rain forest

Patterns of species richness and turnover in endemic amphibians of the Guineo‐Congolian rain forest

Anthropogenic effects of habitat modification on anuran species diversity in a swamp forest area, Kenya

Microplastics as an emerging threat to amphibians: Current status and future perspectives

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