für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray One of the fundamental issues in spatial ecology is how explicit considerations of space alter the prediction of population models, or what insights they may give into the cause of broad-scale patterns. Classical theories, such as diffusion- driven instability and metapopulation dynamics which are developed via simple spatial population models, have profoundly increased our understanding of the issue. In this work these theories are scrutinized under more general framework within which mechanistic processes of spatial interaction of populations are considered. A number of models are derived to study the interplay of migration and local population dynamics in a discrete spatial grid. The potential readers of this work are graduate students or researchers in the area of theoretical ecology, especially those who are interested in deriving models mechanistically. ····· 10361102291
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The End of Inequality covers the global arena in the quest for a diagnosis and a cure of the problems confronting mankind, the magnitude of which is enormous and vast. It is also not possible to address all issues in one go. Nevertheless, an attempt has been made in this book in compiling some such issues under one umbrella. Facts have been presented with comments. Some ideas like Trauma (engineering) centers need to be set up to help those who have gone through traumatic circumstances- war, sexual abuse, and natural disasters. As far as the world s underprivileged is concerned, emphasis should be given on education for children, economic rehabilitation for the middle aged and social rehabilitation for aged people. The book also speaks about ways of fostering world peace and co-operation. Thought provoking and challenging, it suggests that we share responsibility for the planet. Much remains to be done, as a major challenge for all actors governments, civil society and the private sector. THIS CALLS FOR COMMON SOLUTIONS TO EMERGING GLOBAL CONCERNS. Finally, the book has no solutions or remedies as such. But it offers HOPE for mankind. ····· 10361102276
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The ability of intertidal species to navigate through the shallow waters of estuaries and orient themselves in such a featureless environment is a continuing area of interest for many researchers. The New Zealand Eagle Ray, Myliobatis tenuicaudatus, is one of these intertidal species that has developed the ability to utilize these highly productive intertidal habitats and stay safe from stranding. It has been suggested that the use of tidal information and particularly orientation to water currents may be one cue that is used to avoid stranding on an outgoing tide. The movements of M. tenuicaudatus in relation to the tides were tracked and analyzed using GPS data-loggers, telemetry transmitter/receivers, and software for behavioural modelling. The models show a definitive use of the tides for transiting movement in and out of the estuary during rising and falling tides, while also showing their resting/feeding behaviour in the channels in the lower part of the estuary at low tide, and across the mudflats in different areas at times of high tide. There is much work to be done but this data provides great insight into the movement and behaviour of intertidal species. ····· 10361102248
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Nepal`s biodiversity is regarded as being of tremendous importance for supporting the livelihood of the people. There are different national policies in place for the conservation and management of biodiversity. However, there are constant threats to biodiversity due to the inadequacy of these policies and regulations, and deficient local implementation practices.An actor-oriented conceptual framework approach was used to analyse national policies and local practices. This analytical framework has been used to assess functional roles and linkages between the actors responsible for national policies and the local practices. The sustainable livelihood analysis with a particular focus on the livelihood asset building processes was used for studying forest based livelihood issues. Even though some special policy objectives were formulated to address the livelihood issues of the people dependent on forest biodiversity, there are inadequate responses to implement them. ····· 10361102243
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Antioxidants or free radical scavengers are very important in protecting the living cells against any damage induced by free radicals which are produced continuously in cells either during phagocytosis or accidentally as by-product metabolites. Each biological system has certain antioxidant mechanisms against the aggregations of such free radicals. Products from freshwater and marine sources have recently become attractive as nutraceutical and functional foods as well as a source material for the development of drugs and specific health foods. Since, the red swamp crayfish, Procambarus clarkii (Girard, 1852) and Erugosquilla massavensis, (Koossmann,1880) are rich in taurine and other sulphur containing amino acid, we aim to throw the light for the first time in Egypt on their antioxidant activity and subsequently their curative effect against CCl4 induced hepatotoxicity and nephrotoxicity as well as erythrocytes toxicity in rats. ····· 10361102233
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Household well-being is directly linked with the conservation program launched in buffer zone community, which is also reflected in Pithauli Buffer Zone VDC of Chitwan National Park. The study was conducted in randomly sampled 70 households, 30 vegetation plots. The forest patches in Pithauli VDC decreased by 37.52% between 1978 and 1992. But there is appreciable increase in forest area in 2000 by 61.8% after the delineation of buffer zone and handing over the forest to the community. In spite of this success, the Buffer Zone forest can sustainably fulfill 31.32% and 1.02% of household annual fuel wood and fodder demand. The deficit is largely met through the Park and private lands. However people extract 66.75% of fuel wood and 17.65% of fodder demand from buffer zone forest indicating the over harvesting of resources may exist. A great majority of households were indifferent to the Buffer Zone activities carried out and the budget they share. Rhinos were considered the most destructive animal creating crop damage to the villagers. The damage of agriculture products in each year caused by rhinos made the local people behave adversely on park and park management. ····· 10361102117
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The capacity of diatom species to survive gastrointestinal passage through algivorous minnows was examined. In order to determine whether diatom taxa varied in digestibility, live/dead ratios of cells taken from the minnows` feces were compared with live/dead ratios of cells taken from immersed rocks. With the use of Cluster analyses and Student`s t tests, it was concluded that certain diatom species and genera were more resistant to digestion than others. Diatom species that are readily available to grazers are more resistant to digestion, and vice versa. Diatoms that are less available to grazers are less resistant to digestion. Interspecific variation among diatoms in vulnerability to ingestion and digestion may affect community structure and the functioning of benthic algae. ····· 10361102109
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray PROTECTED AREA AND LOCAL LIVELIHOOD The prospective of synergism between Protected Areas (PAs)and local livelihoods depend on the dynamic nature of people-protected area interaction, which are further influenced by various broader socio-economic and political variables as well as household and community characteristics. In developing countries with history of centralized PAs management, the change of political governance emphasizing decentralization might further affect the interaction between people and protected area. The Protected Area and Livelihood identifies major factors influencing the above linkages and analyzes how the decentralization policies of the government affected conservation and local livelihood. ····· 10361102016
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This book is an advancement of the Age-Structured Matrix by introduced by Leslie P.H. in 1945. It gives an Extension that was not foreseen by Leslie, where individuals exhibit Migration characteristics. The text is ideal in the study of population structures for any Undergraduate or Graduate studies both in the areas of Mathematical Biology and Population Ecology. An application has been made to estimation of population size and structure of whale sharks. Only one application has been discussed, but the model is sufficient for wide applications in population dynamics. ····· 10361101985
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Eco(logical /nomic) efficiencies of agroecosystem, wildlife role, and impact of tourism in an interface of food production system and livelihood were viewed in a mid-Himalayan landscape of east Nepal. 20 tree species in forest, maize and potato mix cropping in agroecosystem. Manual labour and farmyard manure energy input source. Natural resource poor area higher energy efficiency ratio compared to resource rich area. 10 earthworm species from 4 families 8 endemic and 2 exotics reported. Local food production sufficient to support about 60% of the households at satisfactory level. Total 97 bird species observed 20 Common and 3 Occasional. Grain and insect-eaters are in majority. Forest have high mammalian diversity, serve habitat corridor for 3 more nature reserves. Cultivation areas lying across the corridor lose 25% of the produce through depredation. Site is of ecotourism importance. Communicable indicators, e.g, decrease in epiphyte density in forests, and shift to cash crops in agroecosystems show declining carrying capacity. Campsite and water availability can support the tourist flow, however, food production is insufficient. ····· 10361101970
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Seabirds are increasingly being used as biological indicators since they are largely influenced by changes associated with the marine environment. At present the New Zealand populations of Little Blue Penguins (LBP: Eudyptula minor) are classified as Threatened` and in Gradual Decline` by the Department of Conservation. Effective conservation management of the North Island sub-species requires an understanding of the factors affecting their survival and breeding success. There is little information on the breeding ecology of the E. minor, especially in the North Island of New Zealand. The overall goal of this study was to establish baseline data on a North Island population of LBP in New Zealand. The aims of this study were to 1) identify population demographics, 2) quantify breeding success and identify abiotic and biotic parameters influencing nesting success, 3) identify feeding ecology based on diet and trophic level assessment, and 4) identify cause of death and underlying patterns associated with mass mortalities of the LBP species. By acknowledging the different parts of the penguins lifecycle as a whole, we can greater understand the links between the land and the sea. ····· 10361101942
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Poor or failed crop establishment may require resowing, or lead to reduced or zero crop yield and is a serious problem for crop production especially under SAT conditions. A complex interaction of factors involving seed, soil, climate, management, and soil flora and fauna determine the final field establishment. This book details new methods and studies on how to detect variations in seed vitality and how seed factors affect crop establishment under different soil conditions. It discusses: the effect of changes in the matric suction of seed test filter-paper on seed germination and water uptake the effect of seed vigour on seedling response to the matric suction of filter paper and soil mechanical impedance the effect of root-shoot interaction on establishment of seedlings subjected to mechanical impedance and the effects of different amounts of planting rain on crop establishment. It is an essential reading to: seed testing laboratories authorities involved in setting seed quality assurance standards professionals and students in seed technology, crop science and production. Seed producers, distributors and those involved in any kind of crop research will find it useful. ····· 10361101902
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The growing evidence of climate change resulting from the continued increase of Green House Gases concentration in the atmosphere has made it a powerful political, social and trade issue. Now, the world is suffering from the impact of climate change on natural resources, agriculture production and so on. Hence, the reduction of Green House Gases emission and their continuously emission monitoring is essential constituent for reducing the global warming. So, to expand the forest area is the best alternative to mitigate the impact of climate change. Accordingly, the estimation of carbon sequestration rate is the crucial component for monitoring the forest carbon. Again, the present world is also talking about the REED, REED+ which also emphasis on the monitoring of forest carbon by estimating carbon stock. Hence this book provides an opportunity to share the knowledge about the calculation procedure of carbon sequestration rate of forest as in the form of biomass carbon and soil organic carbon. Furthermore, this book is useful for those researchers and organization that are involved in the estimation of biomass and soil organic and forest carbon monitoring. ····· 10361101868
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The study found that community livelihood has dependent on the traditional subsistence agriculture and use of forest resource. Dependency on the natural resource was found to be high and use of alternative source of energy is low which had adverse impact on the forest.Bufferzone programme appears to not to decrease need pressure. Distributions of Bufferzone forest resources were found to be unequal among the households.Information on 70 household was gathered to tie up with vegetation study. For the tree species 12 sample plots, 24 plots for shrubs and herbs were studied. Of these 2 tree species, 22 shrubs and 20 herbs were studied. Density, species diversity, IVI, basal area, volume, biomass and annual yield of plant were low. Regeneration of plant species was low because anthropogenic pressure on forest of Bufferzone found to be high. ····· 10361101861
für 50.31€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Phycotoxin Okadaic acid can cause Diarrhetic shellfish poisoning syndrome, accumulates in bivalves, are potent phosphatase inhibitors produced by Dinophysis species, in acute cases killer but its carcinogenic in chronic cases. impacts health and economy, many conditions effect our Coastal and Marine Environment which coast a lot of Money in every year in many parts of world. Harmful algal bloom HABs which concerned internationally and considered as wide world phenomenon is main Main source of these types of marine biogenic toxins and other types not less than of its gravity, also cause fish mortality and bad smell of water. pollution and adding large quantity of pollutants Such as Nitrogen N and Phosphorous P also materials as minor nutrition`s. OA and its isomers Dinophysistoxins (DTX1, DTX2 DTX3) are Detected in many parts of world. and Dinophysis saculus is one of (OA) producers, which is one of phytoplankton species,Distribute in North Adriatic Sea, Portugal, North Atlantic Ocean, Most often observed in semi-enclosed basins, estuaries and lagoons and Mediterranean Sea, cold and temperate waters. ····· 10361101811
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This is simply the best book you can buy if you want to understand the dynamics of households in the context of tree planting activities on their farms within a threatened watershed of River Njoro in Nakuru District-Kenya. The book takes on recent methodologies of quantitative data collection, analysis and skillful interpretation of the responses given by households in regard to the watershed`s rampant degradation. River Njoro watershed is an important resource to the households in the watershed due to its environmental resources sourced from it. However, the wanton destruction and continued threat to the watershed still remains a paradox, which this book endeavors to highlight. It presents a true reflection of the households` perceptions, status of tree planting and the implication of the existent scenarios of tree planting on farms on the overall environment, Lake Nakuru Park and River Njoro. Fundamental strategies that form the pillars of this book have been highlighted to ensure the watershed is conserved so as to guarantee communities and wildlife continued enjoyment of environmental resources offered by this crucial watershed ····· 10361101731
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The Maasai landscapes have been changing since colonial times. The drivers of change have been numerous from time to time and in recent years there have been significant changes in the land use and cover. The changes have brought alarming effects to the lives of pastoralists but have also affected crop cultivators and the ecosystem in general. Change is inevitable but what the changes mean for the ecosystems and communities is of great interest. Will the Maasai steppe be able to support animals and human beings in the next fifty years if we continue with the business as usual path and taking into account the impacts of climate change ····· 10361101712
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Honeybees are notably the most important insect species playing role on plant pollination and producing the hive products. Bee populations are declining because of the ecological and managerial problems. These problems and challenges are threatening the bee industries there by bio diversity, crop productivity and the production of the quality hive products. This book, therefore, provides information on the behavior of native wild and domesticated honeybees and the exotic honeybee adopted. This book also digs out the need of conservation of the wild honeybees, in its indigenous habitat, opportunity of beekeeping, associated problems and challenges and needed conservation activities or improved management practices. This information should be especially useful to professionals who are working in the field of beekeeping, crop pollination, biodiversity conservation, value addition and marketing of the hive products and on the related fields. ····· 10361101677
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Simulation and generalisation of agricultural resource use is problematical for three reasons. First, it is important how- and to which extent research results are generalised, because the choice of boundary conditions for research interferes with the conclusions. Second, the availability and accuracy of data interferes with the significance of the conclusions. Third, the combination of research from different disciplines is difficult, and requires communication across mindsets and institutional barriers. A framework of hierarchy and scale was defined with the aim to support and evaluate generalisation processes and the conveyance of information between sciences and between science and decision-makers. Within this framework, the four case studies of agricultural resource use in the form of fossil energy and nitrogen, respectively, were performed. The weaknesses of the generalisation procedures were related to the three points, stated above: the boundary definition, the data availability and the degree of interdisciplinarity. Further research in these questions is recommended. ····· 10361101648
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In the Yarqon River during 2003-2006 we identified 313 taxa of algae and cyanobacteria belonging to eight taxonomical divisions. 85.6% of species were indicators of environmental conditions that characterized the river water as alkaline with medium mineralization. In rainy and dry seasons the algal taxonomic compositions were very different with prevailing diatoms in the winter and cyabobacteria and greens in summer. Bio-indication and experiments shows that self-purification process was more intensive during the rainy season, while the low level of river water in the dry season stressed out the algal community and take 2-3 weeks. By employing CCA analysis some indicators of highly mineralized water with high pH, anthropogenic pollution, and euthrophication were revealed as well as biosensor species sensitive to the advent of anthropogenic pollution. We therefore conclude that the combination of bioindicational and bio-test methods with statistics is effective in the determination of the main factors influencing algal diversity. The obtained results can be used for water quality assessment and in monitoring systems of Israeli and other Mediterranean coastal rivers. ····· 10361101601
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This work updates the distributional records of more than 200 intertidal species inhabiting the rocky Portuguese coast. Results suggest that abundance and diversity of epifaunal invertebrates are most likely linked to physical factors rather than to the identity of the host algal species. A novel analytical tool to locate multivariate boundaries in one-dimensional and unevenly distributed data is also presented. Several species are identified as sensitive indicators of climate change. Many are warm-water species shifting their ranges towards the north, most likely driven by the recent increase in temperature and associated changes in coastal sea circulation. Surprisingly, no consistent pattern was observed among cold-water species. Thus, data here presented suggest that modifications in distributional ranges are complex and highly variable in intensity, direction and causal factors, and thus generalizations about poleward range shifts due to increasing temperature should be made with caution. ····· 10361101590
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray It is known that microorganisms (especially bacteria) that are under constant exposure to the synthetic chemicals can be used against industry polluted waters. Accordingly, reactive and disperse group of dyes have been screened for decolorization by two groups of novel isolates from two industrial estates. A few bacteria from the isolates were identified to be potent enough for commercial application. The textile industrial effluent was treated by novel isolates and the treated effluent was used for the irrigation of Brassica nigra and Cyamopsis tetragonolobus as sample studies and their growth parameters were compared with the chemically treated and raw effluent. The raw effluent and the sludge of the chemical treatment had adverse effect while the biologically treated effluent water promoted normal growth of the plants as that of the control ground water. The present study suggests that ecofriendly alternatives are available to combat the anthropogenic pollution and that, it is the need of the hour to explore those possibilities to prevent further deterioration of our environment. ····· 10361101575
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This work describes a study of diving behaviour of harbour seal from Anholt. It constitutes a part of the larger project Et Vindue til sælerne` (A window to the seals) aiming at monitoring the whereabouts and ecology of harbour seals from Anholt in relation to human disturbance and to increase the public awareness on seals and the problem of disturbance at the seals` haul-out site. This study includes a general introduction describing in detail the background of the studied animals, study site and methods used to estimate foraging areas of the studied individuals. Furthermore, it includes a draft manuscript showing the results and discussion of the collected data, entitled Diving behaviour of harbour seals (Phoca vitulina) in Kattegat, Southern Scandinavia`. ····· 10361101488
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray At the mouth of Ganga - Brahmaputra river system,Sundarbans represents one of the largest single chunk of mangrove forests. The mangrove ecosystems are the hot spots of biological diversity and very productive with its food chain and nutrient cycle. The mangrove vegetation is greatly influenced by soil properties along with salinity. The soil structure and soil salinity control the distribution of mangroves in Indian Sundarbans. This book highlights the nature and properties of mangrove soil, importance of soil properties on occurrence of different mangrove species, nature of habitats of mangroves of Sundarban Tiger Reserve, India and generates information for the development of eco-friendly conservation of mangrove species. This book will fill the gap of information on chemistry of mangrove ecosystem of 71 Compartments under 15 Blocks of Sundarban Tiger Reserve and will be helpful for those studying biology, environmental science and researchers as well as policy makers. ····· 10361101414· 1 · ::::: · 11 ·· 12 ·· 13 ·· 14 ·· 15 ·· 16 ·· 17 · ::::: · 30 ·
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