Natural Resources Conservation and Research
EISSN : 2578-1936
Published by: EnPress Publisher (10.24294)
Total articles ≅ 25
Latest articles in this journal
Natural Resources Conservation and Research, Volume 1; https://doi.org/10.24294/nrcr.v2i1.754
Climate change is an unequivocal fact and its impacts are already perceptible today. Climate change will profoundly alter the present conditions of agriculture in almost all countries with variable severity from region to region. On one hand unpredicted changes in climatic parameters are likely to threaten the production and productivity of economically important plant species particularly that of food crops, at the same time agriculture productivity requires significant increase to meet the expected growth in demand for food by the ever increasing world population. Conservation and sustainable use of diversity present in plant genetic resources and traditional knowledge of germplasm within and among plant species represent economic, scientific and societal value which has tendency to solve the food security problems erupt due to expanding global population. An advance made in biotechnology field such as in vitro culture technology, cryopreservation and molecular markers technology has generated significant contributions to improve the methods of conservation of rare and endangered plant genetic resources and traditional knowledge of germplasm and their valuable management in an effective way. A strategic and forward vision for conservation of plant genetic resources and traditional knowledge of germplasm and sustainable use of plant resources in the 21st century is of far reaching significance for sustainable development.
Natural Resources Conservation and Research, Volume 1; https://doi.org/10.24294/nrcr.v2i1.750
The current data on the ecological state of streams at the launch site of the Vostochny Cosmodrome with the use of biological indicators are presented. Recommendations on the surface water biomonitoring of the cosmodrome and the booster rocket drop zones are given. It is shown that the system of biological monitoring of the cosmodrome, as a part of the Roscosmos environmental monitoring, should be coordinated with the Roshydromet monitoring.
Natural Resources Conservation and Research, Volume 2; https://doi.org/10.24294/nrcr.v2i1.775
In order to compare effects of the of hormone type (Ovaprim and pituitary extracts) on survival and growth performances of African catfish Clarias gariepinus in recycled water; this study was conducted from April to August 2016, in the South Region Cameroon. The main results are as follows: The survival rate was higher in fish from females treated with pituitary extracts regardless of stage of development, without significant differences (P> 0.05) between treatments. The fish treated with Ovaprim, expressed higher mass and linear growth performances than those treated with pituitary extracts, but not significantly (P> 0.05) regardless the considered stage of development. The relative growth rate (TCR) showed that fish grow faster at the fry stage than at the juvenile stage for both hormone types. Growth was negative Allometric type and K factor was ˂ 1 during breeding. It was concluded that the use of the synthetic hormone is not essential for optimum production of Clarias gariepinus fingerlings.
Natural Resources Conservation and Research; https://doi.org/10.24294/nrcr.v0i0.984
Based on GIS data sets an add-on for a coastal classification system was developed which takes Ecosystem Services (ESS) into account. The coastal area is segmented and afterwards classified. The segmentation is based on Google Earth. Each segment can be characterized by 10 different features including ecosystem services perpendicular to the coastline. If one of the features is changing a new segment will be specified. Therefore, a world-wide application is possible. Tests show that the classification can be easily done. The included ESS can be used to develop a vulnerability index for future development, e.g. for the years 2050 and 2100, based on scenarios for climate and demographic land use change.
Natural Resources Conservation and Research, Volume 1; https://doi.org/10.24294/nrcr.v1i3.421
The year 2018 has been declared as the Year of Birds with the aim of celebrating and protecting them. Birds are mysterious, cheerful and a marvellous creation with some unique and peculiar features. They are ecologically crucial in maintaining the balance of many ecosystems by sustaining various food chains and energy cycles. With their colourful bright plumage they enrich the natural scenic beauty of earth. Their migration, foraging, singing, breeding and nesting behaviour is quite astonishing. Birds make a variety of calls, sounds and songs with a language as complex as any spoken words that have many meanings, purposes and uses. Birds are the indicators of climatic conditions, natural calamities and bio-indicators of potential human impact and environmental degradation. Birds are facing continuous natural and anthropogenic threats due to multiple problems in the environment. The unregulated and unsustainable tourism and poaching threatens the habitat of so many game birds. Climate change, chemical use, loss of food source, overharvesting are the other impacts on bird loss. Awareness about stopping of habitat destruction, indiscriminate poaching birds, and regulated bird watching is the need of the time. We need to use more resources and put more sincere efforts for their management and conservation in view of the changing environment. Climate change has already altered the biological life on this planet, it would be interesting to know how climate change threatens bird’s life and survival. That will enable us in true sense to fulfil the objectives of the year of birds.
Natural Resources Conservation and Research, Volume 1; https://doi.org/10.24294/nrcr.v1i3.792
The present research work aimed at analysing the time series and estimation of seasonal growth/ decay of heavy metals dynamics in the vertical subsurface flow constructed wetlands (VSSFCWs) planted with Typha, Phragmites, Vaccha, Arundo and Vetiver on gravel media. Monthly plant and wastewater samples were collected for 15 months from the VSSF CWs. Plant and water samples were pre-treated in the laboratory, digested using diacid and their heavy metal concentrations were determined using atomic absorption spectrophotometer after filtration. The Main results indicated that the maximum uptakes of metals by plant occurred in summer while the minimum plant uptakes were recorded in winter, regardless of metal concentrations applied and the trends showed a slightly stable profile irrespectively to the level of concentration applied. For the adsorption processes of Cr in the media (gravel) of the constructed wetlands, it appeared that this process was not significantly changing as function of time, except for Cr 1.5 ppm.
Natural Resources Conservation and Research, Volume 1; https://doi.org/10.24294/nrcr.v2i1.933
Safwan-Zubair area is located in the south –west part of Basrah Province in the south of Iraq, this area is involved within the Dibdibba plain which is considered as a part of Iraqi Western Desert. Dibdibba formation consists mainly from sand and gravel with some cementing materials like silt and clay, especially in the west of Zubair area. A linked simulation-optimization model for obtaining the optimum pumping rate of groundwater is presented in this paper. Processing Modflow for Windows (PMWIN v.5) is selected to simulate the aquifer behavior being studied. This model is integrated with an optimization model which is based on the simulated annealing (SA) technique. The calibrated values of hydraulic conductivity vary over the range (15-150) m/day; while, the calibrated values of specific yield vary over the range (0.125-0.45). The objective function converges to a maximum value of (0.636925E+8 m3/year). The percentage ratio of inactive wells is 10.9 %, many wells in the study area that occupy incorrect positions, these wells must be turn off for obtaining optimum pumping rate in the study area.
Natural Resources Conservation and Research, Volume 1; https://doi.org/10.24294/nrcr.v1i4.744
A trend analysis was performed for historic (1901-2002) climatic variables (Rainfall, Maximum Temperature and Minimum Temperature) of Uttarakhand State located in Northern India. In the serially independent climatic variables, Mann-Kendall test (MK test) was applied to the original sample data. However, in the serially correlated series, prewhitening is utilized before employing the MK test. The results of this study indicated a declining trend of rainfall in monsoon season for seven out of thirteen districts of Uttarakhand state. However, an increasing trend was observed in Haridwar and Udhamsingh Nagar districts for summer season rainfall. For maximum and minimum temperature, a few districts exhibited a declining trend in monsoon season whereas many districts exhibited an increasing trend in winter and summer season. Mountain dominated areas (as Uttarakhand state) are specific ecosystems, distinguished by their diversity, sensitivity and intricacy. Thus the variability of rainfall and temperature has a severe and rapid impact on mountainous ecosystems. Nevertheless, mountains have significant impacts on hydrology, which may further threaten populations living in the mountain areas as well as in adjacent, lowland regions.
Natural Resources Conservation and Research, Volume 1; https://doi.org/10.24294/nrcr.v1i2.498
The purpose of this study was to consider the present status and challenges of aquatic animals inhabiting low-lying plains and mountainous regions in Japanese rural areas and to propose future conservation measures. My conclusions are as follows. On low-lying plains where modernizing agriculture such as farmland consolidation is developed, the development project is pointed out the problems from the viewpoint of the conservation of aquatic animals. My preference is for the irrigation water system to be pipelined and the drainage water system to be open channel. As for the drainage network, year-round water flow and the use of natural materials for canal beds are very important. Mountainous regions have suffered from depopulation, and maintaining terrace paddy fields has been difficult. To use agriculture to fulfill multiple functions, I propose zoning into agricultural land management areas, grass and forest management areas, and native forest areas. Appropriate adaptive management is required both on low-lying plains and mountainous regions. Additionally, it is significant to conserve aquatic animals in the watershed. The components of the watershed include farm ponds, dam reservoirs, lakes, flood control basins, paddy fields, rice terraces, rivers, irrigation canals, and drainage canals. It is also important to ensure water flow in the artificial systems around the paddy fields throughout the year. Using springs and groundwater during non-irrigation seasons is effective and efficient both on low-lying plains and in mountainous regions.
Natural Resources Conservation and Research, Volume 1; https://doi.org/10.24294/nrcr.v1i3.800
The species currently listed as rare plants are roughly divided into two types. The populations of one type of rare plants (including Pellionia minima Makino) have decreased due to habitat changes (e.g., from a wet environment to a dry environment) by human-driven development. The populations of the other type of rare plants (including disturbance-dependent species) have decreased because they are unmanaged. The former type of plants is stress tolerance-strategy or competition-strategy species, whereas the latter is only ruderal-strategy species. The stress tolerance-strategy or competition-strategy species do not need management after the protection period ends, but the ruderal-strategy species require adaptive management even after the protection period expires. The protection period of P. minima (a stress-tolerant competitor) is estimated to be approx. 1 year after transplant because P. minima have sufficient ecological adaptability and resilience, and growth in these plants is confirmed roughly 1 year after transplant.