18,874 research outputs found
Is God the Necessary Being?
This paper briefly presents and engages with four competing hypotheses as to the most plausible explanation for the beginning of the universe. After clarifying some terminology, I will first establish both scientific and philosophical reasons for accepting the notion of an absolute beginning over a past eternal universe. Next, I will interact with Lawrence Krauss’ two versions of “nothing” and speculation of a multiverse as possible suggestions for what that first cause might be. In response, I will demonstrate the logical inadequacy of this approach, and by extension all other non-metaphysical theories. Ultimately, I will determine that, due to the logical contradictions inherent in physical explanations, one is epistemically justified in postulating a metaphysical deistic God as the Necessary Being responsible for the material cause of the universe
Evaluation of satellite imagery as an information service for investigating land use and natural resources (Skylab)
There are no author-identified significant results in this report
Evaluation of Skylab imagery as an information service for investigating land use and natural resources
There are no author-identified significant results in this report
Evaluation of Skylab imagery as an information service for investigating land use and natural resources
There are no author-identified significant results in this report
Evaluation of satellite imagery as an information service for investigating land use and natural resources (Skylab)
There are no author-identified significant results in this report
About the relationship between the zooplankton and fluctuating water levels of Lago Camaleão, a Central Amazonian várzea lake
A two-year study of the composition and abundance of the zooplankton was conducted in an Amazonian vãrzea lake, Lago Camaleão. Rotifers were dominant in terms of both species numbers and density. The extremely low standing-stock observed during the high water period is attributed to prevailing poor oxygen conditions and, during extreme floods, current. The species associations of rotifers also reflect the flooding regime and its consequences
Evaluation of ERTS-1 imagery for land use/resource inventory information
This investigation was to develop a low cost, manual technique for enhancing ERTS-1 imagery and preparing it in suitable format for use by users with wide and varied interests related to land use and natural resources information. The goals were: to develop enhancement techniques based on concepts and practices extant in photographic sciences, to provide a means of allowing productive interpretation of the imagery by manual means, to produce a product at low cost, to provide a product that would have wide applications, and one compatible with existing information systems. Cost of preparation of the photographically enhanced, enlarged negatives and positives and the diazo materials is about 1 cent per square mile. Cost of creating and mapping a land use classification of twelve use types at a scale of 1:250,000 is only $1 per square mile. The product is understood by users, is economical, and is compatible with existing information systems
Management of Phytophthora cinnamomi for biodiversity conservation in Australia: Part 2. National best practice guidelines
Disease in natural ecosystems of Australia, caused by the introduced plant pathogen Phytophthora cinnamomi, is listed as a key threatening process under the Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act). The Act requires the Australian Government to prepare and implement a threat abatement plan for nationally coordinated action to mitigate the harm caused by P. cinnamomi to Australian species, particularly threatened flora, fauna and ecological communities. The .National Threat Abatement Plan for Dieback Caused by the Root-Rot Fungus Phytophthora cinnamomi. (NTAP) was released in 2001 (Environment Australia, 2001). The NTAP is designed to promote a common understanding of the national threat P. cinnamomi poses to biodiversity in Australia.
This project, funded by the Australian Government Department of the Environment and Heritage (DEH), is one of the most significant actions to be implemented from the NTAP to date. The project has two major components:
* to review current management approaches and identify benchmarks for best practice
* the development of risk assessment criteria and a system for prioritising management of assets that are or could be threatened by P. cinnamomi.
The project outputs are presented in a four-part document entitled Management of Phytophthora cinnamomi for Biodiversity Conservation in Australia:
Part 1 - A Review of Current Management
Part 2 - National Best Practice Guidelines
Part 3 - Risk Assessment for Threats to Ecosystems, Species and Communities: A Review
Part 4 - Risk Assessment Models for Species, Ecological Communities and Areas.
A model of best practice was developed which encompasses all the components necessary for an informed and integrated approach to P. cinnamomi management, from strategic through to on-ground management. The current document (Part 1 . A Review of Current Management) thoroughly reviews the approaches to P. cinnamomi management in Australia within the context of the best practice model
A review of California sea otter, Enhydra lutris, surveys
Recent surveys (1977 to 1983) of the sea otter, Enhydra lutris, in California were summarized and compared to past surveys, to evaluate the adequacy of current survey design and to-make inferences about current population status.
Ground counts within selected index areas provided the best
indicator of population trends. These data suggest a rather
remarkable stability in the long-term occupied range. Rangewide aerial surveys with ground truth stations provided the best available data for estimating total population size. The most recent (1979) survey yielded a population estimate of approximately 1500 sea otters. Comparisons with past surveys suggest there have been no demonstrable changes in population size since at least 1976. (34pp.
A simulated translocation of sea otters, Enhydra lutris, with a review of capture, transport and holding techniques
A number of techniques and pieces of equipment judged necessary for the translocation of sea otters were field
tested. Captures were accomplished with either a scuba diver operated capture device (Wilson trap), a surface set tangle net or a dip net. A portable floating pen proved very
satisfactory for simultaneously holding at least ten otters for several days. Commercially available pet transport kennels, with the capability of holding water, were adequate for maintaining the otter's pelage in good condition during a transport of approximately five hours duration. Subsequent observations indicated no apparent stress related dispersal. (17pp.
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