Prabhakar Bhat | Indian Institute of Science (original) (raw)

Papers by Prabhakar Bhat

RePEc: Research Papers in Economics - RePEc, 2004

Sorghum (Sorghum bicolor (L.) Moench) is the major nutritional coarse grain cereal crop grown for... more Sorghum (Sorghum bicolor (L.) Moench) is the major nutritional coarse grain cereal crop grown for food, feed, fodder and bioenergy in India and around the world. Drought and heat are the most important abiotic stresses limiting crop productivity around the world primarily in the semi-arid tropical regions, where rainfall is unpredictable, low with its erratic distribution. In India, sorghum is grown (Lat. 9°N-21°N) over an area of ~ 7.65 m ha in rainy (~3.00 m ha) and postrainy (4.05 m ha) seasons, and subjected to both aboitic (drought and temperature (both high and low)) and biotic stresses during pre-and post-flowering periods resulting in decreased productivity. Average yields are ≤1.0 t ha-1 due to negative impacts of these stresses. Further, climate change factors especially short episodes of high temperature (above optimum) are projected to impact the sorghum yields considerably. The objective s of the current research are 1) characterize and identifying the key drought and h...

Current science

... GT Hegde, KS Murali*, DM Bhat, PR Bhat and NH Ravindranath Centre for Ecological Sciences, In... more ... GT Hegde, KS Murali*, DM Bhat, PR Bhat and NH Ravindranath Centre for Ecological Sciences, Indian Institute of Science, Bangalore 560 012, India ... Species present in different villages in the study sites Goran-Halli-Illi-Nida-Species mane baila Hukli mane Kadle god ...

A study was undertaken to evaluate the flow of non - timber forest products (NTFPs) in Uttara Kan... more A study was undertaken to evaluate the flow of non - timber forest products (NTFPs) in Uttara Kannada district, Western Ghats. NTFPs are being collected in different forest zones of the district. The div ersity, however, varies with availability and local knowledge, with communities gathering about 50% of the species available in the evergreen zone to about 40% in the semi evergreen and dry deciduous zones and only 13% in the moist deciduous zone. Significant quantities of NTFPs are gathered in all the four zones and the est i- mated value of NTFPs realized per household varies between Rs 3445/household in the evergreen zone and Rs 1233/household in the dry deciduous zone. Similarly, the financial value realized per hectare also varies across the four forest zones studied and it ranged from Rs 634 in the dry deciduous zone to Rs 1801 in the evergreen zone, with a mean of Rs 1159/ha/yr. NON-timber forest products (NTFPs) are an integral part of development and survival of people livi...

Mitigation and Adaptation Strategies for Global Change, 2000

International Journal of Environment and Sustainable Development, 2006

Energy for Sustainable Development, 2001

In the Western Ghats part of Uttara Kannada district in Karnataka, sixteen non-timber forest prod... more In the Western Ghats part of Uttara Kannada district in Karnataka, sixteen non-timber forest product species were monitored for yield and yield attributes during the years 1997, 1999 and 2000. Average fruit number per tree was computed and yearly variation in fruit number was compared. Correlation coefficients were computed for yield with its attributes such as girth, crown size and height. Further, the correlation coefficients among yield attributes were also computed.

Five villages undertaking joint forest management (JFM) were chosen in Uttara Kannada district, K... more Five villages undertaking joint forest management (JFM) were chosen in Uttara Kannada district, Karnataka for assessing regeneration in plantations and nearby natural forests of the village. Species number, stem density, diversity index, similarity in species composition in less disturbed and disturbed forests and plantations in the village were compared. Stem density was low in all the disturbed forests; however, the species number was low in disturbed forests of three villages and high in two villages. Plantations showed lower diversity values compared to the adjacent natural forests. Regeneration in all less disturbed forests was better compared to the disturbed counterparts. Villages were ranked based on number of landless families, per capita forest available and number of cut stems. Assessment of village forests using ranks indicates that parameters such as per capita availability, cut stems in the forests may determine the success of JFM.

Journal of Land Use Science, 2010

Knowledge of recent changes in land use, driving forces and implications of changes in the contex... more Knowledge of recent changes in land use, driving forces and implications of changes in the context of sustainable development is limited. This study analyses the changes in spatial patterns of land use including crop diversity, the drivers and implications of changes in 11 village ecosystems of southern India. Data obtained from existing maps, land survey, participatory survey and field measurements were integrated to quantify changes. Land-use dynamics at the village ecosystems level are highly interlinked to the livelihoods and anthropogenic forces as well as natural causes leading to major changes. Among the trends observed, urban influence was a major driver causing large area changes, natural causes being less significant. Other drivers included rainfall deficit, human population increase and management decisions. The impacts of changes were both short- and long-term. Implications and trade-offs were linked to the extent of land, type of change and dependence of the communities for livelihood and provisional services.

RePEc: Research Papers in Economics - RePEc, 2004

Sorghum (Sorghum bicolor (L.) Moench) is the major nutritional coarse grain cereal crop grown for... more Sorghum (Sorghum bicolor (L.) Moench) is the major nutritional coarse grain cereal crop grown for food, feed, fodder and bioenergy in India and around the world. Drought and heat are the most important abiotic stresses limiting crop productivity around the world primarily in the semi-arid tropical regions, where rainfall is unpredictable, low with its erratic distribution. In India, sorghum is grown (Lat. 9°N-21°N) over an area of ~ 7.65 m ha in rainy (~3.00 m ha) and postrainy (4.05 m ha) seasons, and subjected to both aboitic (drought and temperature (both high and low)) and biotic stresses during pre-and post-flowering periods resulting in decreased productivity. Average yields are ≤1.0 t ha-1 due to negative impacts of these stresses. Further, climate change factors especially short episodes of high temperature (above optimum) are projected to impact the sorghum yields considerably. The objective s of the current research are 1) characterize and identifying the key drought and h...

Current science

... GT Hegde, KS Murali*, DM Bhat, PR Bhat and NH Ravindranath Centre for Ecological Sciences, In... more ... GT Hegde, KS Murali*, DM Bhat, PR Bhat and NH Ravindranath Centre for Ecological Sciences, Indian Institute of Science, Bangalore 560 012, India ... Species present in different villages in the study sites Goran-Halli-Illi-Nida-Species mane baila Hukli mane Kadle god ...

A study was undertaken to evaluate the flow of non - timber forest products (NTFPs) in Uttara Kan... more A study was undertaken to evaluate the flow of non - timber forest products (NTFPs) in Uttara Kannada district, Western Ghats. NTFPs are being collected in different forest zones of the district. The div ersity, however, varies with availability and local knowledge, with communities gathering about 50% of the species available in the evergreen zone to about 40% in the semi evergreen and dry deciduous zones and only 13% in the moist deciduous zone. Significant quantities of NTFPs are gathered in all the four zones and the est i- mated value of NTFPs realized per household varies between Rs 3445/household in the evergreen zone and Rs 1233/household in the dry deciduous zone. Similarly, the financial value realized per hectare also varies across the four forest zones studied and it ranged from Rs 634 in the dry deciduous zone to Rs 1801 in the evergreen zone, with a mean of Rs 1159/ha/yr. NON-timber forest products (NTFPs) are an integral part of development and survival of people livi...

Mitigation and Adaptation Strategies for Global Change, 2000

International Journal of Environment and Sustainable Development, 2006

Energy for Sustainable Development, 2001

In the Western Ghats part of Uttara Kannada district in Karnataka, sixteen non-timber forest prod... more In the Western Ghats part of Uttara Kannada district in Karnataka, sixteen non-timber forest product species were monitored for yield and yield attributes during the years 1997, 1999 and 2000. Average fruit number per tree was computed and yearly variation in fruit number was compared. Correlation coefficients were computed for yield with its attributes such as girth, crown size and height. Further, the correlation coefficients among yield attributes were also computed.

Five villages undertaking joint forest management (JFM) were chosen in Uttara Kannada district, K... more Five villages undertaking joint forest management (JFM) were chosen in Uttara Kannada district, Karnataka for assessing regeneration in plantations and nearby natural forests of the village. Species number, stem density, diversity index, similarity in species composition in less disturbed and disturbed forests and plantations in the village were compared. Stem density was low in all the disturbed forests; however, the species number was low in disturbed forests of three villages and high in two villages. Plantations showed lower diversity values compared to the adjacent natural forests. Regeneration in all less disturbed forests was better compared to the disturbed counterparts. Villages were ranked based on number of landless families, per capita forest available and number of cut stems. Assessment of village forests using ranks indicates that parameters such as per capita availability, cut stems in the forests may determine the success of JFM.

Journal of Land Use Science, 2010

Knowledge of recent changes in land use, driving forces and implications of changes in the contex... more Knowledge of recent changes in land use, driving forces and implications of changes in the context of sustainable development is limited. This study analyses the changes in spatial patterns of land use including crop diversity, the drivers and implications of changes in 11 village ecosystems of southern India. Data obtained from existing maps, land survey, participatory survey and field measurements were integrated to quantify changes. Land-use dynamics at the village ecosystems level are highly interlinked to the livelihoods and anthropogenic forces as well as natural causes leading to major changes. Among the trends observed, urban influence was a major driver causing large area changes, natural causes being less significant. Other drivers included rainfall deficit, human population increase and management decisions. The impacts of changes were both short- and long-term. Implications and trade-offs were linked to the extent of land, type of change and dependence of the communities for livelihood and provisional services.