ID: 55432
Title: Environmental factors influencing the distribution of marine zooplankton in Buguma Creek, Niger Delta, Nigeria
Author: Anthony E Ogbeibu and Blessing J Oribhabor
Editor: B. Gopal, P S Pathak, A Raman, S Y Lee
Year: 2011
Publisher: National Institute of Ecology, Vol 37, No 1-2, March-June 2011
Source: Centre for Ecological Sciences
Reference: None
Subject: International Journal of Ecology and Environmental Sciences
Keywords: Environmental factors, zooplankton, diversity, density, Buguma creek, Nigeria
Abstract: The composition, abundance, distribution, diversity and seasonal variation of marine zooplankton of Buguma Creek were investigated between November 2004 and October 2006 at five stations, to assess the influence of environmental factors. Thirtyseven taxa comprising 6554 individuals were recorded during the study. Station 3 had the largest number of taxa (22) and individuals (3837) whereas station 4 had the lowest number (14 and 358, respectively). Arthropods were the most important at all the stations, contribution > 95% to the totoal fauna. The rest of the fauna belonged to Coelenterata, Ctenophora, Annelida, Chaetognatha and Chordata. Hutcheson ' s t-test showed that stations 4 and 5 had significantly higher diversity (P<0.05) than stations 1,2 and 3, which were not significantly different (P>0.05). High densities of copepod and decapod crustaceans at station 3 could be attributed to increased nutrients resulting from domestic wastes dump and decay of mangrove leaves from regular cutting of mangrove. Some environmental factors which affected the distribution of zooplankton were dissolved oxygen, water level, pH, alkalinity and EdTA hardness.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 55431
Title: Saline water and agroforestry systems on degraded land: an evaluation
Author: G S Solanki
Editor: B. Gopal, P S Pathak, A Raman, S Y Lee
Year: 2011
Publisher: National Institute of Ecology, Vol 37, No 1-2, March-June 2011
Source: Centre for Ecological Sciences
Reference: None
Subject: International Journal of Ecology and Environmental Sciences
Keywords: Acacia nilotica, Zizyphus jujuba, Pithecellobium dulce, Cenchrus grass, Napier grass, Goats, Feed composition, Nutrition, Digestibility
Abstract: Agroforestry improve the potential of degraded land, enrich life support system. Silvipastoral systems, one of the categories of agroforestry systems, grow a combination of grasses and multipurpose trees. The systems were developed in combination with plants viz; deshi babul (Acacia nilotica L.), ber (Zizyphus jujuba L.) and jungal jalebi (Pithecellobium dulce Roxb) and napier and Cenchrus grasses on riverine land and maintained with saline water of different salinity, ECe 5.7 to 13.2 dSm-1 and pH 8.2-8.5.
Grasses were analysed for nutritive values and tested for digestibiltiy on goats. Crude protein (7.4% and 8.1%), crude fibre (39.3% and 30.1%) and organic matter (87.1% and 93.5%) were estimated in napier and Cenchrus grass, respectively. Dry matter intake was 58.8 g kg-1 BW0.75 adn digestibility coefficient was lowest for ether extract and highest for curde fibre for napier. Dry matter intake was 52.7 g kg-1 BW0.75 and digestibility coefficient was lowest for ether extract and highest for crude fibre for napier. Dry matter intake was 52.7 g Kg-1BW0.75 and the digestibility coefficient was lowest for protein and highest for crude fibre in case of Cenchrus. Silvipastoral system can improve goat production and can increase the productivity of degraded land.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 55430
Title: Hydrographic conditions and the macrozoobenthos of a coastal wetland in Ghana
Author: I Okyere, J Blay and J Aggrey-Fynn
Editor: B. Gopal, P S Pathak, A Raman, S Y Lee
Year: 2011
Publisher: National Institute of Ecology, Vol 37, No 1-2, March-June 2011
Source: Centre for Ecological Sciences
Reference: None
Subject: International Journal of Ecology and Environmental Sciences
Keywords: Marsh, pools, hydrographic parameters, benthic macroinvertebrates, composition, density
Abstract: The prevailing aquatic environmental conditions and their effects on the composition of the benthic macro-invertebrate community were investigated in a few ephemeral pools in coastal Ghana along the Kakum Estuary (about 2 km west of Cope Coast: 506 ' N, 10 18 ' W). Water and benthic sediments were sampled every month from five pools in the wetland from July 2009 to February 2010, and were analysed for six hydrographic parameters as well as the species composition and mean density of benthos.
Significant changes occurred in hydrographic conditions during the year. Water temperature, salinity, conductivity, turbidity, dissolved oxygen and pH were relatively low in July 2009 (27.90C, 0.7%, 1,503 MicroScm-1, 78 mg L-1, 3.5 mg L-1 and 6.9 respectively) but increased progressively to 46.60C, 5.7%, 12,777 MicroScm-1, 304 mg L-1, 5.7 mg L-1 and 8.62, respectively, in January 2010. Chironomid larvae (Diptera) and oligochaetes were the only benthic fauna encountered. These organisms were abundant in the wet season (July-September 2009), with mean density of 258 to 1,375 individuals m-2 for diptera, and 81 to 203 individuals m-2 for oligochaetes. Their abundance and density however declined progressively during the dry season (November 2009 - January 2010) after which they were not found.
The increase in salinity stressed the macrozoobenthic fauna during the dry season leading to their extermination. The ephemeral nature of the environment conceivably resulted in the poor diversity of macro-zoobenthic fauna, and this could limit the development of the fish community.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 55429
Title: Population ecology of Menelik ' s Bushbuck (Tragelaphus scriptus meneliki, Neumann 1902) from Denkoro Forest proposed National Park, Northern Ethiopia
Author: Dereje Yazezew, Yosef Mamo and Afework Bekele
Editor: B. Gopal, P S Pathak, A Raman, S Y Lee
Year: 2011
Publisher: National Institute of Ecology, Vol 37, No 1-2, March-June 2011
Source: Centre for Ecological Sciences
Reference: None
Subject: International Journal of Ecology and Environmental Sciences
Keywords: Activities, Denkoro forest, food items, habitat association, population status
Abstract: Population status, structure, habitat association and feeding behaviour of Menelik ' s Bushbuck (Tragelaphus scriptus meneliki) were studied in Denkoro Forest Proposed National Park, Ethiopia from August 2008 to March 2009. Transect and silent detection methods were employed for population assessment. A total of 230 individuals was estimated with a population density of 11.75 km2. The population was female biased. Male to female ratio was 1.0:1.5 and the ratio of young to female was 1.0:7.5. The age structure was 59.26% adult, 33.33% sub-adult and 7.41% young. Group size varied within seasons. They were highly associated to forest habitat and more distributed in the Erica woodland than the Festuca grassland. Menelik ' s Bushbuck consumed 46 plant species which consisted of 19 herbs, 13 shrub, 12 trees and two lianas. Leaves and young shoots comprised the largest proportion of the food items consumed. Peak activities were observed early morning and late afternoon hours with resting peak during the mid-day.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 55428
Title: Improving the productivity of floodplain through fishery management
Author: Robin L Welcomme
Editor: B. Gopal, P S Pathak, A Raman, S Y Lee
Year: 2006
Publisher: National Institute of Ecology, Vol 35, No 4, 2009
Source: Centre for Ecological Sciences
Reference: None
Subject: International Journal of Ecology and Environmental Sciences
Keywords: Floodplain, wetlands, fisheries, stocking, rice-fish culture, environment flow
Abstract: Fisheries are in decline in many of the world ' s rivers. This is because of the way in which the form and function of rivers are changing in reponse to the pressures palced upon them by a number of other human uses and because of a failure to manage the fisheries themselves. It is unlikely that many of the human induced changes to rivers will be reversed, so in the future fisheries management will have to respond to the altered conditions of rivers and their floodplains if the production of fish for human consumption and recreation is to continue. In some cases this can be achieved by improving conventional management to reationalise current fishing practices in the river and on floodplains. The altered state of many rivers will, however, require innovative approaches to the amplification of production. Several traditional methods such as cage culture, brushy parks, drain in fisheries and controlled flooding of floodplain water bodies can be extended to river basins outside their original range. Modern approaches to stocking and rice-fish culture can be further developed for the management fo floodplains and oxbows. Interventions on the environment to mitigate the impacts of changes to the river-floodplain system, particularly by setting environmental flows will also be necessary. Changes in the way the fishery is managed will involve considerable social adjustment on the parts of riparian peoples and need to incorporate mechanisms through whcih their interests can be expressed. These measures can also only be effective if a holistic approach to fisheries management is adopted, whereby the land and water resources necessary to the fishery are negotiated with other users of rivers resources.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 55427
Title: Integrating agriculture, fisheries and ecosystem conservation: Win-win solutions
Author: V V Sugunan, M Prein and M M Dey
Editor: B. Gopal, P S Pathak, A Raman, S Y Lee
Year: 2006
Publisher: National Institute of Ecology, Vol 35, No 4, 2009
Source: Centre for Ecological Sciences
Reference: None
Subject: International Journal of Ecology and Environmental Sciences
Keywords: Agro-biodiversity, floodplain, rice-fish culture, deepwater rice, sub-Saharan Africa, wetlands
Abstract: Integrated agriculture-aquaculture (IAA) is essentially diversification of agriculture, leading to synergisms among sub-systems resulting in a higher productivity from land/water area under the farmers ' control. One method of achieving this is adding a pond culture component to a farm system, basically to receive and utilize the nutrient inputs from the latter. The second method is physically integrating aquaculture into the other system by modifying the farm design and operations. More than 30% of the total geographical area in 40 countries coverign 9.2 million km2 in sub-Sharan Africa is suitable for some form of integrated aquaculture. Based on the present production scale fish farmers using IAA in just 0.5% of the total potentially available area.
The main motivations that enable farmers in adopting IAA are to i) reduce risk from cropping , ii) accumulate capital, iii) provide draught animal power and manure for fertilizer/fuel (in case of livestock), iv) satisfy cultural needs, v) enhance prestige/status vi) provide food, and vii) generate income. An opportunity for further increased production in the flood-prone ecosystem is the integration of capture fisheries and fish culture with rice farming on a community management basis. However, a key requirement for win-win situation is the development and operation of a good governance system based on community approach in managing the IAA operations. This helps to ensure equity, minimize conflicts among stakeholders and ensure easy resolution of conflicts, should they arise. This has been shown to work very well in a floodplain rice-fish culture system, where in spite of individual ownership of rice plots, fish culture is done on a community basis. Rice-fish systems foster ecologica conservation through a number of means such as use of natural organic inputs, least alteration in the physical habitat, safeguarding agro-biodiveristy (both rice and fish), allowing free movement of wild stock (in flooded system), efficient recycling of farm wastes, utilizing all possible synergisms in various farm sub-systems, encouraging community and participatory approach in managing the resources, which can facilitate mass awareness on conservation.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 55426
Title: Leaf litter decomposition, abiotic factors and population of micro-arthropods in a sub-tropical forest ecosystem, Manipur, North East India
Author: Kh. Sunanda Devi and Th . Binoy Singh
Editor: B. Gopal, P S Pathak, A Raman, S Y Lee
Year: 2009
Publisher: National Institute of Ecology, Vol 35, No 4, 2009
Source: Centre for Ecological Sciences
Reference: None
Subject: International Journal of Ecology and Environmental Sciences
Keywords: Litter decomposition, microarthropod, litter bag, population, elevation
Abstract: Microclimatic variation can influence litter decomposition rates directly, or indirectly through changes in microarthropod population. This study examines the rates of leaf litter decomposition of two dominant species viz., Quercus serrata adn Castanea sativa at two elevational plots which have varied microclimatic in sub-tropical forest ecosystem. One year litter bag experiment was performed to determine the rate of leaf litter decomposition and microarthropod population. The remaining mass for leaf litter in the litterbags was found more for Q. serrata-33.2% at lower elevation and 37.6% at upper elevation. The population of microarthropods ranges from 12.8 to 68.4 per g of leaf litter at upper elevation and 16.3 to 71.2 per g of leaf litter at lower elevation. The moisture content and litter accumulation were comparatively higher at the lower elevation. In both sites, the rate of decomposition and microarthropods population were found positively correlated with moisture content and rainfall.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 55425
Title: Response of Anabaena PCC 7120 to Nickel and Cadmium stress
Author: Harish and S Sundaramoorthy
Editor: B. Gopal, P S Pathak, A Raman, S Y Lee
Year: 2009
Publisher: National Institute of Ecology, Vol 35, No 4, 2009
Source: Centre for Ecological Sciences
Reference: None
Subject: International Journal of Ecology and Environmental Sciences
Keywords: Absorption/adsorption, Anabaena, cadmium, nickel
Abstract: Anabaena PCC 7120 strain is sensitive to Ni2+ and Cd2+ and growth rates at various concentrations of these metals were assessed in terms of protein level. Tolerance limits for Ni2+ and Cd2+ are 1.2 mgL-1 (39% level in growth kinetics) and 1.2 mg L-1 (48.99% level in growth kinetics), respectively. Absorption/adsorption kinetics was estimated after 240 hrs of heavy metal treatments. For both the heavy metals, absorptions were higher than adsorption. Metal concentration and absorption were linearly related (r = 0.99; p>0.001). Sugar and pigment exhibited reduction due to heavy metal stress.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 55424
Title: Monsoon-related flux in inter-tidal foraminiferal diversity in the West coast of India
Author: Subhadra Devi Gadi and Rajashekhar K Patil
Editor: B. Gopal, P S Pathak, A Raman, S Y Lee
Year: 2009
Publisher: National Institute of Ecology, Vol 35, No 4, 2009
Source: Centre for Ecological Sciences
Reference: None
Subject: International Journal of Ecology and Environmental Sciences
Keywords: Diversity flux, biodiversity indices, morphogroups, species assemblage, sediment, hydrology
Abstract: Studies on paleomonsoons rely on fossil foraminifera (forams) of sea bed core samples. While the stable isotopes of carbon and oxygen of foram shells are predominantly analysed, fluxes in foraminiferal assemblage in response to monsoons are not well recorded. To asses such fluxes at the level of the taxon as well as individual species, a study of inter-tidal foraminiferal diversity was undertaken over a perid of 18 months, from October 2004 to March 2006, at an estuarine and a non-estuarine site on the west coast of Inida. Well-defined seasonality was seen both in live (LFN) and total foraminiferal number (TFN). The LFN and TFN reached a peak after SW monsoons with a lag of about three months. Population density, species richness and Shannon diversity indices of forams decline during summer and are lowest during monsoon. Several dominant species show seasonal fluxes with decrease in density during monsoon and peaks following post-monsoon. The density of angular, asymmetric forams increases during post-monsoon period. Fluxes in foram diversity correlate significantly with hydrological and sediment characteristics affected by monsoon. Forams showed significant (0.01 level) positive correlation with calcium and pH levels. It is likely that organic matter and phosphate enrichment due to monsoon and ocean upwelling increases foram density. These observations are useful in proxy validation of core sample data aimed at deducing paleomonsoons and paleoclimate.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 55423
Title: Biodiversity inventory as a tool to determine forest degradation : a case study from tropical forests of Bodamalai, Eastern Ghats, India
Author: L Arul Pragasan and N Parthasarathy
Editor: B. Gopal, P S Pathak, A Raman, S Y Lee
Year: 2009
Publisher: National Institute of Ecology, Vol 35, No 4, 2009
Source: Centre for Ecological Sciences
Reference: None
Subject: International Journal of Ecology and Environmental Sciences
Keywords: Tree diversity, forest stand structure, Above-grouind biomass, topography, forest land degradation, Bodamalai, Eastern Ghats
Abstract: This study aims to assess the status of forest degradation through inventory of tree species in the tropical forests of Bodamalai, Indian Eastern Ghats. The Bodamalai complex was divided into ten 6.25 km grids. Within each grid a 0.5 ha transect (5 m x 1 km) was inventoried for tree diversity. A total of 64 tree species ( > 30 cm girth at breast height ) representing 50 genera and 32 families were recorded from the total 5 ha area inventoried. The stand density, basal area and AGB for the total 5 ha area were 1449 stems, 27.72 m2 and 3125. 91 Mg, respectively. A positive correlation was obtained between altitude and stand density, species richness, basal area and AGB, and also with density of evergreen species. While a negative correlation was obtained between altitude and the density of dominant species Euphorbia antiquorum (one of the indicator species of scrub/degraded forests). This reveals that tropicl forests of Bodamalai located at low altitudes are porne to high degradation. Although, Bodamalai is included under reserve forest category, the human population has unlimited and unspecified right of firewood collection, felling, lopping adn herding cattle for grazing , browsing, etc. Further, illegal extraction of Santalum album (Sandal wood), one of the valuable bioresources is also witnesses . We recommended the following for developing the degraded forest ladn of Bodamalai: (i) to create awareness on forest degradation among the local people, (ii) planting some important indigenous trees and (iii) to organize a village committee for maintenance of afforested landscape.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 55422
Title: An assessment of Rangeland soils on the Saiq Plateau, Jebel Akhdar, Oman
Author: Michael D Robinson and Suad Al Nabhani
Editor: B. Gopal, P S Pathak, A Raman, S Y Lee
Year: 2009
Publisher: National Institute of Ecology, Vol 35, No 4, 2009
Source: Centre for Ecological Sciences
Reference: None
Subject: International Journal of Ecology and Environmental Sciences
Keywords: Oman Range Ecology, Grazing Land Degradation, Monitoring programme
Abstract: Variables indicating the stability and hydrologic function of rangeland soils of the Saiq Plateau have never been assessed. We used standard soil analytical methods to quantify soil texture, stability, organic matter and water holding capacity at 14 sites across the width of the Plateau. The soils were mainly loams. Three-fourths of the 756 transect samples were unstable, indicating the landscape is vulnerable to erosion. Although the quantity of organic matter (1.7-7.6%) is similar to North American grasslands, the soils were often azonal and lacked a dark humic layer, suggesting low rates of decomposition. Soil organic matter and water-holding capacity are significantly correlated (P<0.00012) and both variables are significantly greater under trees and shrubs than on open rangeland (P<0.0001). This pattern of higher concentrations of organic matter around perennial vegetation and notably less in the plant interspaces characterizeds heavily grazed rangelands. A livestock management plan is suggested that could allow soils and vegetation to recover.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 55421
Title: An assessment of the rangeland vegetation on the Saiq Plateau, Jebel Akhdar, Oman
Author: Michael D Robinson and Badriya Al Busaidi
Editor: B. Gopal, P S Pathak, A Raman, S Y Lee
Year: 2009
Publisher: National Institute of Ecology, Vol 35, No 4, 2009
Source: Centre for Ecological Sciences
Reference: None
Subject: International Journal of Ecology and Environmental Sciences
Keywords: Range ecology, Jebel Akhdar, Grazing, vegetation cover
Abstract: Rangeland vegetation of the Saiq Plateau, Sultanate of Oman was assessed at 14 sites using line-point intercept transects. This research is the first to quantify variables relevant to the rangeland ' s ecological condition and its ability to sustain a livestock industry. Canopy cover by perennial species was generally low (2.7 to 7.3%). The dominant cover species were : a coarse grass (Cymbopogon sp), a small thick-leafed shrub (Helianthemum lippii), a large spiny shrub (Sideroxylon muscatense), an aromatic prostrate perennial (Teucrium mascatense) and Dodonaea viscosa, a chemically defended invasive shrub. More palatable grasses and forbs were rare and had very low coverage. Large areas of bare, unprotected ground commonly occupied from one-third to over half of a 50-meter transect. Most canopy gaps between perennial plants were greater than 200 cm. Exposed bedrock covered a considerable area, perhaps one-third of the rangeland. Together, the variables indicate that most of the sites are badly degraded and at risk to increasing loss of soil and vegetation. We conclude that the range is overstocked, and this is supported by the fact that many herders must by costly supplemental feeds to provide sufficient energy and nutrients to their animals.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 55420
Title: Characterisation of the Wadi Wurayah catchment basin, the first mountain protected area in the United Arab Emirates
Author: Christophe Tourenq, Ali Khassim, Maral Khaled Shuriqi, Emma Smart, Michele Ziolkowski, Mike Brook, Rhea Selwan, Lisa Perry
Editor: B. Gopal, P S Pathak, A Raman, S Y Lee
Year: 2009
Publisher: National Institute of Ecology, Vol 35, No 4, 2009
Source: Centre for Ecological Sciences
Reference: None
Subject: International Journal of Ecology and Environmental Sciences
Keywords: United Arab Emirates, Mountain Protected Area, Biodiversity, Arabian Tahr
Abstract: Wadi Wurayah, in the Emirate of Fujairah, United Arab Emirates, lies within a priority WWF Global 200 Ecoregion (Ecoregion 127, Arabian Highlands adn Shrublands), sheltering a rich diversity of rare and endangered mountainous and freshwater habitats and species, and providing opportunities for the sustenance and revival of local livelihoods. Emirates Wildlife Society-World Wide Fund for Nature in collaboration with the Fujairah Municipality initiated a project to declare the whole catchment basin as officinally protected with the aims to help establish a sustainable protected area integrating local tradition and lifestyle with the conservation of inimitable biodiversity and habitat by providing a model of unique economical incentives to the region. Over 300 species of plants grow in the area, including the country ' s unique orchid, Epipactis veratrifolia, as well as wetland species. Twelve species of mammals were observed, including the Arabain Tahr, Mountain Gazelle, Blanford ' s Fox and, possibly, Arabian Leopard, all considered Threatened by the International Union for Conservation of Nature (IUCN). So far, 74 species of bird (of which 25% are considered of national conservation interest) have been recorded, including the Bonelli ' s Eagle, Barbary Falcon, Asian Houbara Bustard and probably Hume ' s Tawny Owl. The wadi hosts thirteen reptile and amphibian species of which five are endemic to UAE and northern Oman mountains: Blue-tailed Lizard, Jayakar ' s Oman Lizard, Bar-tailed Semaphore Gecko, Banded Ground Gecko, and Oman Carpet Viper. Endemic to the Arabian Peninsula and considered endangered by IUCN, the Garra fish is found in the wadi. The collection of insect samples revealed 74 invertebrate families, including 19 arthropod species new to science. So far, 29 heritage sites have been recorded and mappped, including bedu settlements, ancient Islamic graveyards, pre-Islamic tombs, 15th to 18th centuries AD porclain and pottery fragments and one petroglyph (rock carving) site. Social surveys of resident and non-resident local people were conduced as well showing a positive response to the creation of a protected area. Because of its unique hydrogeological system with permanent pools and streams, the Wadi Wurayah area has a strong potential in the Fujairah Emirate for (1) management and conservation of fresh water resources, (2) conservation of its unique fauna and flora, (3) conservation of its cultural heritage, (4) opportunity of local capacity building and involvement of several departments of Fujairah Municipality around the same project (5) involvign local communities in the management and (6) proposing an alternative and complementary tourism activity to the coastal development in progress in the Emirate.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 55419
Title: Cattle-carnivore conflict: A case study of Pakke Tiger Reserve in Arunachal Pradesh, India
Author: Awadhesh Kumar and G S Solanki
Editor: B. Gopal, P S Pathak, A Raman, S Y Lee
Year: 2009
Publisher: National INstitute of Ecology, Vol 35, No 1, 2009
Source: Centre for Ecological Sciences
Reference: None
Subject: International Journal of Ecology and Environmental Sciences
Keywords: Tiger-cattle Conflict, season of conflicts, Pakke Tiger Reserve, Conservation
Abstract: A case study on cattle-carnivores conflict was carried out at Pakke Tiger Reserve (PTR) in Arunachal Pradesh, Northeast India during 2001-2003. Number of villages on the eastern periphery of PTR are 14, comprised of the total number of 395 household, 2322 human population and 1392 domestic cattle propulation. A total of nineteen incidences of conflicts were recorded on the eastern part of buffer zone of PTR. Out of nineteen, in four incidences of conflict cattle were injured and on fifteen incidence cattle were killed adn eaten by large carnivores. The incident rate was not related to proximity of village with protected area. The livestock number was the factor for higher number of conflicts. The maximum six incidences of conflict were reported from Jolly Village. 79% conflicts were recorded during dry season, September -February, when agricultural land are occupied by crops. The most villagers (75%) agreed on the presence of tigers in the periphery of PTR during the period.
Location: 241
Literature cited 1: None
Literature cited 2: None
ID: 55418
Title: Impact of land use changes on species structure, biomass and carbon storage in tropical deciduous forest and converted forest
Author: Lalji Singh, Dhiraj Kumar Yadav, Priyata Pagare, Lekha Ghosh, and B S Thakur
Editor: B. Gopal, P S Pathak, A Raman, S Y Lee
Year: 2009
Publisher: National INstitute of Ecology, Vol 35, No 1, 2009
Source: Centre for Ecological Sciences
Reference: None
Subject: International Journal of Ecology and Environmental Sciences
Keywords: Tropical deciduous forest, converted forest, biomass, carbon storage, species diversity
Abstract: Impacts of land use change on species structure, biomass and carbon storage were studied in a tropical deciduous forest and a converted forest. Total of 2740 trees representing 23 species and 18 families were recorded in the study area. Density and basal area of trees in different forest plots ranged from 480 stems ha-1 (32 years old converted forest) to 920 stems ha-1 (natural forest) and 12.04 m2ha-1 (15 years old converted forest) to 25.16 m2ha-1 (natural forest). Diversities in these forest plots were 0.79 to 2.72 (Shannon index), 1.77 to 4.03 (Species richness), 0.44 to 1.18 (equitability), 0.78 to 1.0 (concentration of dominance) and 8.21 to 12.53 (beta diversity). The beta diversity was highest at disturbed forest plot, respectively.
The total biomass recorded among the different forest plots was 192.933 Mg ha-1 in natural foest followed by 95.64 Mg ha-1 in 32 years old converted forest, 85.78 Mg ha-1 in 23 years old converted forest and 92.05 Mg ha-1 in 15 years old converted forest. The total above ground biomass in different forest plots ranged from 71.94 to 162.91 Mg ha-1 with highest in natural forest and lowest in 23 years old converted forest. The below ground biomass varied from 13.97 to 30.02 Mg ha-1 with the highest in natural forest and lowest in 23 years old converted forest. Carbon storage was also maximum in natural forest (96.44 Mg ha-1) followed by 32 years old converted forest (47.801 Mg ha-1), 15 years old converted forest (46.25 Mg ha-1) and 23 years old converted forest (42.88 Mg ha-1). The higher proportion of above ground carbon was allocated to bole followed by branch and root in different forests. The above ground carbon in different forests ranged between 35.88 to 81.43 Mg ha-1 with highest in natural forest and lowest in 23 years old converted forest. The below ground carbon in different forest varied from 6.98 to 15.01 Mg ha-1 and was highest in natural forest and lowest in 23 years old converted forest. Study revealed the changes in structure, diversity, biomass and carbon storage due to changes in land use practices in tropical deciduous forest.
Location: 241
Literature cited 1: None
Literature cited 2: None