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Papers by poonam mehrotra
The present study was centred on selected historical ponds in Mahoba district to monitor the surf... more The present study was centred on selected historical ponds in Mahoba district to monitor the surface water quality. For two to thirty years, the different types of effluent coming from household in adding to farming runoff have had a harmful impact on surface water quality. This work was carried out from January 2016 to December 2016 to study physico-chemical characteristics, viz. temperature, pH, EC, TDS, TH, Cl – , Ca++, Mg++, Na+, DO and BOD to evaluate the surface water quality and the parameters’ statistical correlations. The values of WQI (Water Quality Index) were 36.43, 36.07 and 35.60 at Keerat Kalaya and Madan Sagar, respectively and it was compared with Indian Standard Drinking Water (IS 10500: 2012). The assessment of the surface water quality of Mahoba district are in the scale of polluted (BAD), which is not acceptable in respect to potable water with no proper treatment of polluted water, however it is acceptable meant for agricultural and other household purposes. Th...
CURRENT SCIENCE-BANGALORE-, 1998
Poonam Mehrotra*, Pawan Mehrotra and YS Rawat. ... Hence grass forms a sizeable part of ground ... more Poonam Mehrotra*, Pawan Mehrotra and YS Rawat. ... Hence grass forms a sizeable part of ground vegetation in the chir-pine forests of this region and the soil here is residual brown earth derived from limestones, quartzite, shales and sandy loam. ...
African Journal of Environmental Science and Technology, Sep 30, 2008
Unorganized land disposal of industrial wastes contaminates land and ground water. The Wazirpur I... more Unorganized land disposal of industrial wastes contaminates land and ground water. The Wazirpur Industrial area of Delhi, a metropolitan city, generates highly acidic (pH 2-3.8) and toxic waste, and disposal remains a perpetual problem. This waste contains a high quantity of macronutrients as well as heavy metals because major industries are involved in metals finishing. Wastes of these industries were mixed with municipal waste at roads. Hence a study was undertaken to verify the suitability of land disposal of this toxic waste. The waste was first treated with three doses of lime (0, 0.5 and 1%) and then mixed with two types of soils from two different locations in three different proportions viz. 10, 20 and 30%, maintaining soil moisture level at 50% of water holding capacity. These samples were incubated for 120 days. All three waste amendments resulted in an increase in available phosphorus (AP) in both waste-amended soils as compared to the control soils. It is statistically significant at p = 0.05 level. During the 120 days of incubation highest value (36.41 ± 0.01 ppm for site 1 soil and 30.40 ± 0.03 ppm for site 2 soil) of available phosphorus had been found at 20 th day of incubation for both the soils. Lime treatment at the rate of 0.5% gave in 10 and 20% treatments significantly positive result as compared to 0 and 1% treatment. Only in 30% waste amendment 1% lime treatment gave better amount of available phosphorus (27.77 ± 0.01 ppm and 24.84 ± 0.03 ppm for site 1 and site 2 soils respectively). The finding of the study evident that 0.5% lime treated 10% industrial waste can be used as manure for soil. The result is of further interest from a plant nutrition standpoint since the amount of potentially mobile-P measured in this study could be related to the amount of available phosphorous required for crop growth.
Abstract: Taxonomic diversity of understorey vegetation (herb species) was studied in two evergre... more Abstract: Taxonomic diversity of understorey vegetation (herb species) was studied in two evergreen forests, viz. oak and pine in the Kumaun Himalaya. In terms of taxonomic diversity, Asteraceae and Lamiaceae were the two dominant families in the sampling forest types. Maximum number of species was found at hill base and minimum at hill top in both the forests. The number of families, genera and species ratio observed for pine forest was of course higher with compared to the oak forest showed about the higher taxonomic diversity. Perennials form had higher contribution as compared to annuals forms indicated better ability to store up soil. Very few species (9 species) were found to be common indicates higher dissimilarity in both type of forests. Species richness (per m2) was higher in the pine forest than the oak forest. A high value of beta-diversity in the oak forest point out that the species composition varied from one stand to another. However, low concentration of dominance v...
Journal of Ecobiology, 1999
Oecologia Montana, 1999
The morphology of forest herbs was examined to determine how variation in growth form could relat... more The morphology of forest herbs was examined to determine how variation in growth form could relate to growth and survival in the forest. The four common herb species in both oak and chirpine forests were totally excavated in old growth forest in the Kumaun Himalaya. Both aboveground and belowground parts were measured oven dried and weighed. The different growth forms allow there species flexibility in exploiting the forest environment. The four species were different in rate of extension, growth and rooting depth in both forests. A. vulgaris, G. gossypina, A. concinnum and O. contiguum have difference in above and below ground growth within the species pairs and these differences in above and belowground growths often greatly effects the plant habitat, tolerances and competitive ability. The difference in growth form among the species help to explain their ability to survive and coexist in the heterogeneous forest floor environment and may be causal in determining distribution patt...
The study work was carried out in Leucaena plantation sites located in and around Jhansi. Three s... more The study work was carried out in Leucaena plantation sites located in and around Jhansi. Three sites of Leucaena plantation were selected i.e. Leucaena plantation at seasonal standing water (SSW site), Leucaena plantation (LP site) at forest site, and Leucaena plantation along the perennial water stream (PWS site). The study showed that density of Leucaena was maximum at PWS site
Journal of Forestry Research, 2010
The study focuses on the dynamics and biomass production (g•m-2) of understory (herbaceous) plant... more The study focuses on the dynamics and biomass production (g•m-2) of understory (herbaceous) plant community under broad-leaf forests consisting of Quercus leucotrichophora (Banj-oak), Quercus floribunda (Tilonj-oak) and Quercus semicarpifolia (Kharsu-oak), respectively in central Himalaya, India. With increasing altitudes, the density and biomass decreased significantly across the three types of forests. Banj-oak forest harboured the maximum density and biomass among the other sampling sites. The mean density of herb species in two contrasting orientation differed significantly (p<0.05), showing relatively higher density on slope orientation (west). Across the sites, total production declined significantly with increasing altitude of the sites (p<0.05), and Banj-oak forest presented the highest production.
Science, 2009
Taxonomic diversity of understorey vegetation (herb species) was studied in two evergreen forests... more Taxonomic diversity of understorey vegetation (herb species) was studied in two evergreen forests, viz. oak and pine in the Kumaun Himalaya. In terms of taxonomic diversity, Asteraceae and Lamiaceae were the two dominant families in the sampling forest types. Maximum number of species was found at hill base and minimum at hill top in both the forests. The number of families, genera and species ratio observed for pine forest was of course higher with compared to the oak forest showed about the higher taxonomic diversity. Perennials form had higher contribution as compared to annuals forms indicated better ability to store up soil. Very few species (9 species) were found to be common indicates higher dissimilarity in both type of forests. Species richness (per m2) was higher in the pine forest than the oak forest. A high value of betadiversity in the oak forest point out that the species composition varied from one stand to another. However, low concentration of dominance value in the pine forest with compare to the oak forest point towards the dominance, which is shared by many species.
Current science, 2005
Species richness, diversity and composition of herb species in oak forests, viz. Banj oak(Quercus... more Species richness, diversity and composition of herb species in oak forests, viz. Banj oak(Quercus leucotrichophora) A. Camus, Tilonj oak(Quercus floribunda) Rehder and Kharsu oak(Quercus semecarpifolia) Smith were evaluated. The total number of species, ...
Journal of American …, 2010
Abstract: Presently, the crisis of enormous amounts of fly ash has been sorted out by using it si... more Abstract: Presently, the crisis of enormous amounts of fly ash has been sorted out by using it significantly in stabilization and escalating crop growth. In present study pot-culture experiment was performed to observe the influence of fly ash amendments on the growth and ...
Current science, 2005
In this study, we examined plant species richness at altitudes between 200 and 5800 m asl, consid... more In this study, we examined plant species richness at altitudes between 200 and 5800 m asl, considering altitudinal gradients (200 and 1000 m asl altitudinal differences) in the Indian Central Himalaya. The low elevation appears to be drier than higher, although precipitation varies inconsistently with elevation. Low temperature and greater cloudiness at higher elevations might increase precipitation. In this study, a total of 2487 species were recorded, of which 276 were trees, 355 shrubs, 112 climbers and 1744 herbs. The deciduous trees were maximum at 600-800 m asl elevation and evergreen trees were maximum at 1200-1400 m elevation. Shrub species occurred in the altitude range of < 200 to 4800 m asl. The total number of shrub species varied from 2 (4600 m asl) to 35 (1400 m asl). The total number of climber species was maximum at an altitudinal range of 800-100 m asl for deciduous as well as evergreen species. Along the altitude, the geographic and climatic conditions change sharply. The total number of species, including all growth forms was maximum near low altitude to mid altitude of tropical/subtropical belt due to overlapping of climatic conditions, but with further increase in altitude it decreased consistently, probably due to decrease in atmospheric temperature with increase in altitude. The number of deciduous species was relatively more than evergreen species irrespective of the plant form, i.e. trees, shrubs, and climbers, which may be due to spatial fluctuation in climatic conditions. The study concludes that the distribution and species richness pattern in this region largely depend on the altitude and climatic variables like rainfall, temperature.
Andrographis paniculata Nees contains a bitter compound called andrographolide is commonly used f... more Andrographis paniculata Nees contains a bitter compound called andrographolide is commonly used for medicinal purposes. The herb has been revered for treating infectious diseases and highly regarded also as having a preventive effect from many diseases, due to its powerful immune strengthening benefits. Scientists today, however, are focusing on the herb's application in treating the 'killer' diseases that blight modern life, such as heart disease and cancer. Therefore to investigate whether sand amendments to soil could improve both soil properties and A. paniculata performance. We report the results of a research carried out in India to determine the effectiveness of different levels of sand amendments to soil and water patterns using A. paniculata. The present study was conducted with the objectives to determine optimum water requirements and impact of potting media on the growth behavior A. paniculata. Four different growing media including 1:0 soil + sand, 1:1 soil + sand , 1:3 soil + sand and 0:1 soil + sand were used to observe the growth medium that is most suitable for the growth of A. paniculata. The overall best performance was recorded in medium 1:1 soil + sand that were watered daily followed by soil alone and 1:3 soil + sand amendment. The least performance was observed in sand alone with alternate water pattern. But during the first thirty days, root length was observed highest in plants grown in sand alone.
A Ab bs st tr ra ac ct t.. Natural selection generally favors plants whose forms and physiology t... more A Ab bs st tr ra ac ct t.. Natural selection generally favors plants whose forms and physiology tends to maximize their net rate of growth, because plant uses resource to reproduce and compete for additional space. Above ground characteristics of a plant often greatly affect its competitive abilities and population dynamics rather than below ground because drymass of a plant depends on leaf strategy, where as root in the top soil is responsible for exploitation, competition through depletion of a common pool of resources so fine roots are also important. The use of root/shoot ratios to describe allocation of dry weight to structures for capturing soil resources and light is limited due to other functions of the root and shoot such as storage and support. Dry matter allocation, specific leaf area, root length and different ratios were determined for 17 herb species by extraction of soil cores from an intact forest. Interspecific values of RLA were considered. It has been hypothesized that the co-variation among species in leaf trait and other morphological adaptations particularly leaf and growth rate reflects a set of mutually supporting traits that interact to determine plant identity in similar climatic conditions.
The present study was centred on selected historical ponds in Mahoba district to monitor the surf... more The present study was centred on selected historical ponds in Mahoba district to monitor the surface water quality. For two to thirty years, the different types of effluent coming from household in adding to farming runoff have had a harmful impact on surface water quality. This work was carried out from January 2016 to December 2016 to study physico-chemical characteristics, viz. temperature, pH, EC, TDS, TH, Cl – , Ca++, Mg++, Na+, DO and BOD to evaluate the surface water quality and the parameters’ statistical correlations. The values of WQI (Water Quality Index) were 36.43, 36.07 and 35.60 at Keerat Kalaya and Madan Sagar, respectively and it was compared with Indian Standard Drinking Water (IS 10500: 2012). The assessment of the surface water quality of Mahoba district are in the scale of polluted (BAD), which is not acceptable in respect to potable water with no proper treatment of polluted water, however it is acceptable meant for agricultural and other household purposes. Th...
CURRENT SCIENCE-BANGALORE-, 1998
Poonam Mehrotra*, Pawan Mehrotra and YS Rawat. ... Hence grass forms a sizeable part of ground ... more Poonam Mehrotra*, Pawan Mehrotra and YS Rawat. ... Hence grass forms a sizeable part of ground vegetation in the chir-pine forests of this region and the soil here is residual brown earth derived from limestones, quartzite, shales and sandy loam. ...
African Journal of Environmental Science and Technology, Sep 30, 2008
Unorganized land disposal of industrial wastes contaminates land and ground water. The Wazirpur I... more Unorganized land disposal of industrial wastes contaminates land and ground water. The Wazirpur Industrial area of Delhi, a metropolitan city, generates highly acidic (pH 2-3.8) and toxic waste, and disposal remains a perpetual problem. This waste contains a high quantity of macronutrients as well as heavy metals because major industries are involved in metals finishing. Wastes of these industries were mixed with municipal waste at roads. Hence a study was undertaken to verify the suitability of land disposal of this toxic waste. The waste was first treated with three doses of lime (0, 0.5 and 1%) and then mixed with two types of soils from two different locations in three different proportions viz. 10, 20 and 30%, maintaining soil moisture level at 50% of water holding capacity. These samples were incubated for 120 days. All three waste amendments resulted in an increase in available phosphorus (AP) in both waste-amended soils as compared to the control soils. It is statistically significant at p = 0.05 level. During the 120 days of incubation highest value (36.41 ± 0.01 ppm for site 1 soil and 30.40 ± 0.03 ppm for site 2 soil) of available phosphorus had been found at 20 th day of incubation for both the soils. Lime treatment at the rate of 0.5% gave in 10 and 20% treatments significantly positive result as compared to 0 and 1% treatment. Only in 30% waste amendment 1% lime treatment gave better amount of available phosphorus (27.77 ± 0.01 ppm and 24.84 ± 0.03 ppm for site 1 and site 2 soils respectively). The finding of the study evident that 0.5% lime treated 10% industrial waste can be used as manure for soil. The result is of further interest from a plant nutrition standpoint since the amount of potentially mobile-P measured in this study could be related to the amount of available phosphorous required for crop growth.
Abstract: Taxonomic diversity of understorey vegetation (herb species) was studied in two evergre... more Abstract: Taxonomic diversity of understorey vegetation (herb species) was studied in two evergreen forests, viz. oak and pine in the Kumaun Himalaya. In terms of taxonomic diversity, Asteraceae and Lamiaceae were the two dominant families in the sampling forest types. Maximum number of species was found at hill base and minimum at hill top in both the forests. The number of families, genera and species ratio observed for pine forest was of course higher with compared to the oak forest showed about the higher taxonomic diversity. Perennials form had higher contribution as compared to annuals forms indicated better ability to store up soil. Very few species (9 species) were found to be common indicates higher dissimilarity in both type of forests. Species richness (per m2) was higher in the pine forest than the oak forest. A high value of beta-diversity in the oak forest point out that the species composition varied from one stand to another. However, low concentration of dominance v...
Journal of Ecobiology, 1999
Oecologia Montana, 1999
The morphology of forest herbs was examined to determine how variation in growth form could relat... more The morphology of forest herbs was examined to determine how variation in growth form could relate to growth and survival in the forest. The four common herb species in both oak and chirpine forests were totally excavated in old growth forest in the Kumaun Himalaya. Both aboveground and belowground parts were measured oven dried and weighed. The different growth forms allow there species flexibility in exploiting the forest environment. The four species were different in rate of extension, growth and rooting depth in both forests. A. vulgaris, G. gossypina, A. concinnum and O. contiguum have difference in above and below ground growth within the species pairs and these differences in above and belowground growths often greatly effects the plant habitat, tolerances and competitive ability. The difference in growth form among the species help to explain their ability to survive and coexist in the heterogeneous forest floor environment and may be causal in determining distribution patt...
The study work was carried out in Leucaena plantation sites located in and around Jhansi. Three s... more The study work was carried out in Leucaena plantation sites located in and around Jhansi. Three sites of Leucaena plantation were selected i.e. Leucaena plantation at seasonal standing water (SSW site), Leucaena plantation (LP site) at forest site, and Leucaena plantation along the perennial water stream (PWS site). The study showed that density of Leucaena was maximum at PWS site
Journal of Forestry Research, 2010
The study focuses on the dynamics and biomass production (g•m-2) of understory (herbaceous) plant... more The study focuses on the dynamics and biomass production (g•m-2) of understory (herbaceous) plant community under broad-leaf forests consisting of Quercus leucotrichophora (Banj-oak), Quercus floribunda (Tilonj-oak) and Quercus semicarpifolia (Kharsu-oak), respectively in central Himalaya, India. With increasing altitudes, the density and biomass decreased significantly across the three types of forests. Banj-oak forest harboured the maximum density and biomass among the other sampling sites. The mean density of herb species in two contrasting orientation differed significantly (p<0.05), showing relatively higher density on slope orientation (west). Across the sites, total production declined significantly with increasing altitude of the sites (p<0.05), and Banj-oak forest presented the highest production.
Science, 2009
Taxonomic diversity of understorey vegetation (herb species) was studied in two evergreen forests... more Taxonomic diversity of understorey vegetation (herb species) was studied in two evergreen forests, viz. oak and pine in the Kumaun Himalaya. In terms of taxonomic diversity, Asteraceae and Lamiaceae were the two dominant families in the sampling forest types. Maximum number of species was found at hill base and minimum at hill top in both the forests. The number of families, genera and species ratio observed for pine forest was of course higher with compared to the oak forest showed about the higher taxonomic diversity. Perennials form had higher contribution as compared to annuals forms indicated better ability to store up soil. Very few species (9 species) were found to be common indicates higher dissimilarity in both type of forests. Species richness (per m2) was higher in the pine forest than the oak forest. A high value of betadiversity in the oak forest point out that the species composition varied from one stand to another. However, low concentration of dominance value in the pine forest with compare to the oak forest point towards the dominance, which is shared by many species.
Current science, 2005
Species richness, diversity and composition of herb species in oak forests, viz. Banj oak(Quercus... more Species richness, diversity and composition of herb species in oak forests, viz. Banj oak(Quercus leucotrichophora) A. Camus, Tilonj oak(Quercus floribunda) Rehder and Kharsu oak(Quercus semecarpifolia) Smith were evaluated. The total number of species, ...
Journal of American …, 2010
Abstract: Presently, the crisis of enormous amounts of fly ash has been sorted out by using it si... more Abstract: Presently, the crisis of enormous amounts of fly ash has been sorted out by using it significantly in stabilization and escalating crop growth. In present study pot-culture experiment was performed to observe the influence of fly ash amendments on the growth and ...
Current science, 2005
In this study, we examined plant species richness at altitudes between 200 and 5800 m asl, consid... more In this study, we examined plant species richness at altitudes between 200 and 5800 m asl, considering altitudinal gradients (200 and 1000 m asl altitudinal differences) in the Indian Central Himalaya. The low elevation appears to be drier than higher, although precipitation varies inconsistently with elevation. Low temperature and greater cloudiness at higher elevations might increase precipitation. In this study, a total of 2487 species were recorded, of which 276 were trees, 355 shrubs, 112 climbers and 1744 herbs. The deciduous trees were maximum at 600-800 m asl elevation and evergreen trees were maximum at 1200-1400 m elevation. Shrub species occurred in the altitude range of < 200 to 4800 m asl. The total number of shrub species varied from 2 (4600 m asl) to 35 (1400 m asl). The total number of climber species was maximum at an altitudinal range of 800-100 m asl for deciduous as well as evergreen species. Along the altitude, the geographic and climatic conditions change sharply. The total number of species, including all growth forms was maximum near low altitude to mid altitude of tropical/subtropical belt due to overlapping of climatic conditions, but with further increase in altitude it decreased consistently, probably due to decrease in atmospheric temperature with increase in altitude. The number of deciduous species was relatively more than evergreen species irrespective of the plant form, i.e. trees, shrubs, and climbers, which may be due to spatial fluctuation in climatic conditions. The study concludes that the distribution and species richness pattern in this region largely depend on the altitude and climatic variables like rainfall, temperature.
Andrographis paniculata Nees contains a bitter compound called andrographolide is commonly used f... more Andrographis paniculata Nees contains a bitter compound called andrographolide is commonly used for medicinal purposes. The herb has been revered for treating infectious diseases and highly regarded also as having a preventive effect from many diseases, due to its powerful immune strengthening benefits. Scientists today, however, are focusing on the herb's application in treating the 'killer' diseases that blight modern life, such as heart disease and cancer. Therefore to investigate whether sand amendments to soil could improve both soil properties and A. paniculata performance. We report the results of a research carried out in India to determine the effectiveness of different levels of sand amendments to soil and water patterns using A. paniculata. The present study was conducted with the objectives to determine optimum water requirements and impact of potting media on the growth behavior A. paniculata. Four different growing media including 1:0 soil + sand, 1:1 soil + sand , 1:3 soil + sand and 0:1 soil + sand were used to observe the growth medium that is most suitable for the growth of A. paniculata. The overall best performance was recorded in medium 1:1 soil + sand that were watered daily followed by soil alone and 1:3 soil + sand amendment. The least performance was observed in sand alone with alternate water pattern. But during the first thirty days, root length was observed highest in plants grown in sand alone.
A Ab bs st tr ra ac ct t.. Natural selection generally favors plants whose forms and physiology t... more A Ab bs st tr ra ac ct t.. Natural selection generally favors plants whose forms and physiology tends to maximize their net rate of growth, because plant uses resource to reproduce and compete for additional space. Above ground characteristics of a plant often greatly affect its competitive abilities and population dynamics rather than below ground because drymass of a plant depends on leaf strategy, where as root in the top soil is responsible for exploitation, competition through depletion of a common pool of resources so fine roots are also important. The use of root/shoot ratios to describe allocation of dry weight to structures for capturing soil resources and light is limited due to other functions of the root and shoot such as storage and support. Dry matter allocation, specific leaf area, root length and different ratios were determined for 17 herb species by extraction of soil cores from an intact forest. Interspecific values of RLA were considered. It has been hypothesized that the co-variation among species in leaf trait and other morphological adaptations particularly leaf and growth rate reflects a set of mutually supporting traits that interact to determine plant identity in similar climatic conditions.