Research@Lincoln
Research@Lincoln is an open access institutional repository collecting the research produced by Lincoln University staff and students. You may also be interested in Data@Lincoln or Lincoln University Living Heritage.
Students wishing to submit a thesis or dissertation should see the Depositing theses and dissertations guide.
Recent Submissions
Item Open Access Diversity of mammalian species in the Kangchenjunga Landscape of eastern Nepal(Springer Nature, 2024-12)The Himalayas, including Nepal, are a biodiversity hotspot. However, records on mammalian richness remain incomplete due to resource limitations, inadequate training, and the remote location of study areas. The unprotected forest area of the Panchthar-Ilam-Taplejung region in eastern Nepal is a vital corridor connecting India and Nepal. Using a structured methodology we aimed to increase our knowledge of mammalian diversity in this area. Camera traps were deployed throughout the Panchthar-Ilam-Taplejung area in 53 locations in winter and 54 in spring, accumulating 3014 camera trap days and generating 93,336 images, with a positive trigger rate of 29.8%. The survey revealed 17 species of medium to large-sized mammals and an additional six species of smaller unidentified mammals, including two melanic variations and two previously undocumented species. Activity patterns were calculated for species with more than five image records in both seasons. The findings contribute essential information about the Kangchenjunga Landscape, which can be used to further conservation efforts in this critical ecosystem corridor.Publication Open Access The merit sire test of the Corriedale Sheep Society (Incorporated.)(Lincoln College, 1949-04)The evolution and consolidation of the Corriedale breed of sheep in the South Island must be regarded as one of the major achievements in sheep farming in New Zealand.Item Open Access Agricultural waste manual(Lincoln College. New Zealand Agricultural Engineering Institute, 1984-12)Agricultural waste management is a rapidly changing technology. It is subject to government regulation and sensitive to population growth patterns, community attitudes and land use changes. It is influenced by variables such as soil type, topography, climate, crop and livestock production practices. The trend towards larger and more concentrated livestock operations has accentuated the problems of waste management. This has necessitated better management methods, not only to hold down labour requirements and cost, but also to minimise detrimental effects on the environment.Item Open Access Spatio-temporal analysis of net anthropogenic phosphorus inputs (NAPIs) and their impacts in Ningxia Hui Autonomous Region using Monte Carlo simulations and sensitivity analysis(MDPI AG, 2024-11)This study employed the Net Anthropogenic Phosphorus Inputs (NAPI) model to assess the impact of human activities on phosphorus input in a watershed, analyzing county-level statistical data and NAPI model parameters from 1991 to 2020. The Monte Carlo method was used for a quantitative analysis of the model parameters’ effects on each NAPI component and the overall simulation results. The sensitivity index method identified each component’s sensitive parameters. The study found that the lowest NAPI value was 454 kg/(km²·a) in 1991 and the highest was 1336 kg/(km²·a) in 2003. NAPI in Ningxia showed an overall upward trend from 1991 to 1999, a slight decrease from 1999 to 2003, and a slight increase from 2003 to 2020, with fertilizer being the main contributing factor, accounting for 77.4% of the total input. On a spatial scale, NAPI in Ningxia was significantly correlated with land use patterns, showing higher values in the northern and southern regions compared to the central part. The NAPI values derived from Monte Carlo simulations with appropriate parameters ranged from −24.83% to 31.49%. The study highlighted the net food and feed imports component as having the highest uncertainty, impacting simulation results within a range of −23.89% to 53.98%. It was observed that the larger a component’s proportion in the NAPI model, the more sensitive its parameters, with the phosphorus fertilizer (Pfer) component’s parameters being notably more sensitive than those of the food/feed phosphorus input and the non-food phosphorus input (Pnf) components. These findings can inform phosphorus pollution control policies in Northwest China, while the selection of sensitive parameters provides a useful reference for future NAPI research in other regions.Item Open Access Guide to subsurface land drainage(Lincoln College. New Zealand Agricultural Engineering Institute, 1988-05)The NZAEI Guide to Subsurface Land Drainage is intended to be a readily available source of design information for farm advisors, contractors, farmers, and others involved in agricultural and horticultural drainage. The emphasis is on subsurface drainage because this is an area where the available information is often difficult to locate and can be confusing. The technical standards required in subsurface work are higher than for surface drainage, and mistakes are not only costly but also not easily rectified. This guide is not a comprehensive treatise on subsurface drainage, and for this kind of information on New Zealand conditions the reader is referred to Hudson, Hopewell, Bowler and Cross (1962), and Bowler (1980). It is presumed that the need for drainage has been established and that a suitably skilled drainage contractor is available. The information presented herein is an attempt to link these two. Drainage is by no means an exact science. Wherever possible, the physical reasons for particular recommendations are given so that the designer can make a judgement on the consequences of departing from the guidelines. In some drainage situations, local experience and practice may appear to conflict with methods presented in this guide. In such cases, proven successful practice must be allowed to reign with due regard for the physical reasons behind the apparent anomaly.
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