Impact of Savannization on Nitrogen Mineralization in an Indian Tropical Forest

Tripathi, Nimisha; Singh, R. B.

doi:10.4172/2168-9776.1000108

Cited by 6 publications

(5 citation statements)

References 78 publications

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“…According to Tripathi and Singh, (2012) harvesting of forest for mining and local demand for fuel leads to the development of grassland and increasing grazing pressure might have reduced the herbaceous ground cover (Singh, et al, 1991a, b, Reese et al 2001, West and Messmer 2006, Sanjari et al 2006). The grazing pressure might have affected soil properties due to forest degradation (Singh et.…”

Section: Figure 2 Frequency Of Ground Cover (%)mentioning

confidence: 99%

Impact of mining on herbaceous ground cover and wild fauna in Birsha- Damoh forest range a buffer zone of Malanjkhand Copper mines of India

Singh¹,

Singh²,

Bera³

2017

Eurasian Journal of Forest Science

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Mining is known to demolish adjacent natural ecosystem all over world with generating massive volumes of wastes dumped resulting in damage to the natural ecosystem, reducing herbaceous ground cover and wildlife. Hinustan Copper Mines (HCM) is the Asia's largest open cast copper mines and produces 70 % copper for the Indian market. The study was carried out at buffer zone of HCM in 31 forest sites of Birsha-Damoh forest range area of Balaghat district of Madhya Pradesh in India. The herbaceous ground cover (HGC) was estimated by line transect method. Results indicated that the total average herbaceous ground cover ranged from 11.2-77.44%, indicating least wildlife movement at site 14 and maximum at site 29. The dominant herbaceous plants were Cynodon dactylon followed by Lantana camara, Thysanolaena maxima covering across most of the sites. The rest of the herbaceous species were Vallaris heyne, Achyranthes aspera, Eragrostis tenella, Waltheria indica and Ocimum Gratissimum, found as casual constituents of the community. The maximum number (7) of wild animals presence in a day was observed at Cynodon dactylon and Thysanolena maxima dominated sites and minimum number (1) was observed at Lantana camera dominated forest sites.

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Section: Figure 2 Frequency Of Ground Cover (%)mentioning

confidence: 99%

Impact of mining on herbaceous ground cover and wild fauna in Birsha- Damoh forest range a buffer zone of Malanjkhand Copper mines of India

Singh¹,

Singh²,

Bera³

2017

Eurasian Journal of Forest Science

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“…), have also been reported in sites experiencing overgrazing by livestock and firewood collection. Furthermore, forest stands experiencing intense fodder extraction and small‐scale slash‐and‐burn agriculture usually experience soil degradation and biomass collapse as trees are replaced by shrubs and grasses (Tripathi and Singh , Silvério et al. ).…”

Section: Introductionmentioning

confidence: 99%

“…Disruptions of plant-animal interactions, such as seed dispersal ) and plant-protection against herbivores , have also been reported in sites experiencing overgrazing by livestock and firewood collection. Furthermore, forest stands experiencing intense fodder extraction and small-scale slash-and-burn agriculture usually experience soil degradation and biomass collapse as trees are replaced by shrubs and grasses (Tripathi andSingh 2012, Silvério et al 2013). Nevertheless, to our knowledge, the impact that chronic disturbances may have on the phylogenetic dimension of plant diversity has never been investigated.…”

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confidence: 99%

Phylogenetic impoverishment of plant communities following chronic human disturbances in the Brazilian Caatinga

Ribeiro

Santos²,

Arroyo‐Rodríguez

et al. 2016

Ecology

112

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Chronic disturbances, such as selective logging, firewood extraction and extensive grazing, may lead to the taxonomic and phylogenetic impoverishment of remaining old-growth forest communities worldwide; however, the empirical evidence on this topic is limited. We tested this hypothesis in the Caatinga vegetation--a seasonally dry tropical forest restricted to northeast Brazil. We sampled 11,653 individuals (adults, saplings, and seedlings) from 51 species in 29 plots distributed along a gradient of chronic disturbance. The gradient was assessed using a chronic disturbance index (CDI) based on five recognized indicators of chronic disturbances: proximity to urban center, houses and roads and the density of both people and livestock. We used linear models to test if mean effective number of lineages, mean phylogenetic distance and phylogenetic dispersion decreased with CDI and if such relationships differed among ontogenetic stages. As expected, the mean effective number of lineages and the mean phylogenetic distance were negatively related to CDI, and such diversity losses occurred irrespective of ontogeny. Yet the increase in phylogenetic clustering in more disturbed plots was only evident in seedlings and saplings, mostly because clades with more descendent taxa than expected by chance (e.g., Euphorbiaceae) thrived in more disturbed plots. This novel study indicates that chronic human disturbances are promoting the phylogenetic impoverishment of the irreplaceable woody flora of the Brazilian Caatinga forest. The highest impoverishment was observed in seedlings and saplings, indicating that if current chronic disturbances remain, they will result in increasingly poorer phylogenetically forests. This loss of evolutionary history will potentially limit the capacity of this ecosystem to respond to human disturbances (i.e., lower ecological resilience) and particularly their ability to adapt to rapid climatic changes in the region.

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“…A similar trend of seasonal variation was observed by Singh et al, (2001) in a moist tropical Sal forest located at Panchakanyaplateau of Sunsari district, eastern Nepal. Arunachalam and Arunachalam (2000) in the humid subtropical forest of Northeast India, Singh et al, (2010) in the tropical forest of Vindhyan Plateau India and Tripathi and Singh (2012) in Indian tropical forest have also reported same trends regarding the effects of seasonality on soil microbial biomass. The low value of soil MB-C, MB-N, and MB-P during the rainy season might also be due to sudden change in environmental conditions (drying, rewetting, and soil temperature fluctuations) that cause the death of a large amount of the microbial biomass (Singh et al, 2010).…”

Section: Discussionmentioning

confidence: 57%

Comparative Study on Soil Microbial Biomass in Tarai and Hill Sal (Shorearobusta Gaertn.) Forests of Tropical Region in Eastern Nepal

Bhattarai¹,

Mandal

2020

Nepal Journal of Science and Technology

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A comparative study was conducted to investigate the effect of altitudinal variation and seasonality on soil microbial biomass carbon (MB-C), nitrogen (MB-N), and phosphorus (MB-P) between Tarai Sal forest (TSF) and Hill Sal forest (HSF) of the tropical region in eastern Nepal. Soil microbial biomass was estimated by chloroform fumigation - extraction method in summer, rainy and winter seasons in the upper (0-15 cm) soil depth in both forests. Pre-conditioned soil samples were saturated with purified liquid chloroform, represented fumigated sample. Another set of soil samples without using chloroform, represented unfumigated samples and soil biomass was estimated from these samples. MB-C, MB-N, and MB-P were higher by 66%, 31%, and 9%, respectively, in HSF than TSF. Distinct seasonality was observed in soil microbial biomass. It was maximum in summer and minimum in rainy season in both the forest stands. The value decreased from summer to rainy season by 46 to 67% in HSF and by 32 to 80% in TSF. Higher soil microbial biomass in the summer season may be due to its accumulation in soil when the plant growth and nutrient demand are minimal. Analysis of variance suggested that MB-C, MB-N, and MB-P were significantly different for both sites and seasons (P < 0.001). Soil organic carbon, TN, and TP were positively correlated with MB-C, MB-N, and MB-P in both the forests. In conclusion, the higher value of soil microbial biomass in HSF may be due to the higher concentration of soil organic matter and decreasing turnover rate of microbial biomass due to higher altitude. On the other hand, the lower value of microbial biomass at TSF may indicate its fast turnover rate due to lowland tropics to enhance the nutrient cycling process.

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Impact of Savannization on Nitrogen Mineralization in an Indian Tropical Forest

Cited by 6 publications

References 78 publications

Impact of mining on herbaceous ground cover and wild fauna in Birsha- Damoh forest range a buffer zone of Malanjkhand Copper mines of India

Impact of mining on herbaceous ground cover and wild fauna in Birsha- Damoh forest range a buffer zone of Malanjkhand Copper mines of India

Phylogenetic impoverishment of plant communities following chronic human disturbances in the Brazilian Caatinga

Comparative Study on Soil Microbial Biomass in Tarai and Hill Sal (Shorearobusta Gaertn.) Forests of Tropical Region in Eastern Nepal

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