Abundance and diversity of soil mites of fragmented habitats in a biosphere reserve in Southern Nigeria

Badejo, M. A.; Ola-Adams, Buny Amin

doi:10.1590/s0100-204x2000001100001

Cited by 16 publications

(6 citation statements)

References 14 publications

(9 reference statements)

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“…This suggests that soil pH might play a significant role in influencing the soil fertility; hence, the diversity and abundance of soil mesofauna are also affected. The result of this finding is similar to Badejo & Ola-Adams (2000) who reported that the soil pH of the Natural forest is higher than its surrounding plantations and cultivated land.…”

Section: Discussionsupporting

confidence: 90%

Effect of oil spillage on abundance and diversity of soil mesofauna in Bodo city, Niger Delta, Nigeria

Adeduntan¹,

Owokotomo²

2018

Trop. Plant Res.

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The abundance and species diversity of mesofauna were surveyed in the unpolluted site, remediated site and crude oil polluted sites to examine the effect of crude oil on the abundance and diversity of mesofauna. The samples were collected on a line transect. Soil samples were collected and taken to the laboratory to isolate and identify mesofauna found in the soil samples. The pH, moisture content and moisture content of the soil samples were also obtained, where the unpolluted site has the highest pH followed by remediated site while the crude oil polluted site recorded the least pH. During the research work 37 individuals of mesofauna were encountered (distributed in 15 species) in the entire studied sites. Mesofauna abundance was highest in the unpolluted site (31 individuals) followed by the remediated site (4) while crude oil polluted site recorded the least abundance (2 individuals). Highest species diversity of mesofauna was also recorded in the unpolluted site (11). The results further explained that the effect of crude oil is significant (P≥0.05) on the abundance of mesofauna). The relationship between pH and mesofauna abundance and diversity showed that there were no significant differences (P<0.05). It was further observed that the pH of the unpolluted site with the mean value of 6.79 is higher than those of remediated (6.33) and crude oil polluted site (6.12). This work showed that abundance and species diversity of mesofauna in the study habitats were significantly different. Soil moisture content of the polluted site (32.29%) is higher than those of remediated (20.17%) and unpolluted site (20.32%). Soil temperature in the remediated site is the highest value (31.03°C) followed by the unpolluted site (29.14°C) while the crude oil affected site recorded the least temperature value (23.11°C).

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Section: Discussionsupporting

confidence: 90%

Effect of oil spillage on abundance and diversity of soil mesofauna in Bodo city, Niger Delta, Nigeria

Adeduntan¹,

Owokotomo²

2018

Trop. Plant Res.

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“…[1] Grasse [2] reported that more than 2000 species of termites are currently known to exist, and a majority of them are commonly found in the tropics. In this region termite mounds are very common, especially on land under pasture or forest.…”

Section: Introductionmentioning

confidence: 99%

Properties of Termite Mound Soils and Responses of Rice and Bean to Nitrogen, Phosphorus, and Potassium Fertilization on such Soil

Fageria¹,

Baligar²

2004

Comm Soil Sci Plant An

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Termite mounds are very common in Oxisols of Cerrado region of Brazil where land is either under forest or long term pasture. The objective of this study was to characterize textural and chemical properties of soils derived from these termite mounds and to determine the growth response of rice and common bean to soil applied nitrogen (N), phosphorus (P), and potassium (K) fertilization. Soil samples were collected from 20 termite mounds located on . Average value of clay content was 354 g kg À1 , silt was 217 g kg À1 , and sand was 429 g kg À1 . Average soil pH was 5.7, P was 3.2 mg dm À3 , K was 150 mg dm À3 , and organic matter content was 32 g dm À3 . Average cation contents (mmol dm À3 ) for calcium (Ca), magnesium (Mg), aluminum (Al), and Al þ H were 36, 18, 1.7, and 78, respectively. Average micronutrient contents (mg dm À3 ) for copper (Cu), zinc (Zn), iron (Fe), and manganese (Mn) were 2.8, 3.2, 135, and 78, respectively. Average cation saturation was 45%, Al saturation 2.8%, Ca/K ratio 10.7, Ca/Mg ratio 2.1, and Mg/K ratio 5.1. On average, soil fertility of termite mounds was higher than that of the Oxisols soils surrounding the mound. Upland rice (Oryza sativa L. cv. Maravilha) and common bean (Phaseolus vulgaris L. cv. Perola) grown on a representative termite mound soil responded significantly to applied N and P. However, with the exception of grain yield of common bean, these crops did not respond to K fertilization.

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“…The diversity of communities was studied by calculating the mean species richness, cumulative species richness, Simpson index, Simpson diversity index, evenness, Berger Parker index, and the Jaccard dissimilarity index expressed in percentages. The community structure was characterized by using dominant, ubiquitous, and specialist species (Badejo and Ola-Adams, 2000). The relative dominance of each species was classified according to Yang et al (2015): Eudominant: species comprising over 30% of the total number of individuals, Dominant: 10-30% of individuals, Sub-dominant: 5-10% of individuals, Minor: 1-5% of individuals, and Rare: less than 1% of the total number.…”

Section: Discussionmentioning

confidence: 99%

Biomonitoring and Inter-Annual Variation of Soil Mite (Acari) Diversity and Community Structure in Lamto Guinean Savannah (Co´te d'Ivoire) Submitted to Different Fire Regimes

N'dri

Dosso

N’Dri

et al. 2018

JNS

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The objective of the study conducted in the Lamto Guinean savannah situated at 165 km northwest of Abidjan, Côte d'Ivoire consisted to assess the changes in soil mite abundance, diversity and community structure specific to the second fire cycle applied in 2015, as well as the inter-annual variation between the two fire cycles (2014 and 2015). Three study sites (Salty marigot, Plateau and North piste) were selected in shrub savannah, where on each, three adjacent stands of 100 m x 50 m formerly delimited were considered. The three fire regimes (early, mid-season, and late fire) were respectively applied on the three sites and stands. Thus, 135 soil cores (5 soil cores × 3 sampling periods × 3 fire regimes or stands × 3 sites) were used for mite extraction. 108 soil cores were taken at two upper layers (0-5 and 5-10 cm) for determination of the bulk density and water content. Whatever the fire regimes, the mean density of soil mites decreased after the fire application. The highest value of density was observed through the early fire (1,715 ± 327 ind.m -2 ) whereas the lowest value was recorded during the mid season fire (1,433 ± 153 ind.m -2 ). 41 species had been recorded along the three fire regimes and distributed as follows: early fire 34 species, mid season fire 20 species , and late fire 13 species. The mean species richness of soil mites changed significantly across the fire regimes, and reduced after the fire application, except for the mid season fire. The Simpson diversity index was significantly modified across the fire regimes, and increased after the fire application. Beyond to 24 specialist species, over 50% of the species observed before the burns were rediscovery after the fire application, and could explain this variation. The inter-annual variation of soil mites showed that the density (early fire, mid season fire, and late fire), mite richness (early fire), and diversity (early fire and late fire) increased whereas the mite richness (mid season fire and late fire), and diversity (mid season fire) decreased, respe ctively, during 2015-burn compared to the previous cycle (2014-burn). The rebound of soil mite parameters during the second fire cycle could be assigned (i) to litter and woody debris, which burn in a mosaic, reflecting local fire intensity, (ii) improving of stand complexity and canopy structure, and (iii) fire tolerance of mites.

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Abundance and diversity of soil mites of fragmented habitats in a biosphere reserve in Southern Nigeria

Cited by 16 publications

References 14 publications

Effect of oil spillage on abundance and diversity of soil mesofauna in Bodo city, Niger Delta, Nigeria

Effect of oil spillage on abundance and diversity of soil mesofauna in Bodo city, Niger Delta, Nigeria

Properties of Termite Mound Soils and Responses of Rice and Bean to Nitrogen, Phosphorus, and Potassium Fertilization on such Soil

Biomonitoring and Inter-Annual Variation of Soil Mite (Acari) Diversity and Community Structure in Lamto Guinean Savannah (Co´te d'Ivoire) Submitted to Different Fire Regimes

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