We developed an index of biotic integrity (IBI) based on cray®sh, ®sh, and amphibian assemblages to assess vernal ponds and palustrine wetland habitats of less than 5 ha along the southern shore of Lake Michigan. We found that the modi®ed IBI based on three cray®sh, twelve ®sh, and seven amphibian species collected during our surveys provided a more complete assessment than one based on any sin...

The present paper argues that the operational conditions for Ecologically Sustainable Economic Development (ESED) may be described by a traditional welfare criterion: ESED refers to a process of economic processes that ensure the environmental prerequisites for an efficient evolution of intergenerational welfare. Under the premise of an unknown and unknowable structure of future generations’ we...

Increasingly on a worldwide scale, legislation has been adopted to determine the ecological integrity of surface waters including streams, rivers, lakes, estuaries and coastal waters. An integral part of determining ecological integrity is the measurement of biological integrity, typically emphasizing analyses of plankton, benthos, macroalgae and fish. In the development of protocols for evalua...

Generally, aquatic communities reflect the effects of anthropogenic changes such as deforestation or organic pollution. The Cerrado stands among the most threatened ecosystems by human activities in Brazil. In order to evaluate the ecological integrity of the streams in a preserved watershed in the Northern Cerrado biome corresponding to a mosaic of ecosystems in transition to the Amazonia biom...

The plant cell wall is involved in different biological processes like cell morphogenesis and response to biotic/abiotic stress. Functional integrity of the wall is apparently being maintained during these processes by changing structure/composition and coordinating cell wall with cellular metabolism. In S.cerevisiae a well-characterized mechanism exists that is maintaining functional integrity...

The debate over the ethics of radically, technologically altering the capacities and traditional form of the human body is rife with appeals to and dismissals of the importance of the integrity of the human species. Species-integrist arguments can be found in authors as varied as Annas, Fukuyama, Habermas, and Agar. However, the ethical salience of species integrity is widely contested by autho...

the astonishing advance of medical science in recent decades has had endless advantages for humans, including improved level of health, prevention of disease and advances in treatment. these advances depend to a great extent on conducting continuous research. however, besides its enormous advantages, the sole interest of medical science undermines the principles of respect for human vulnerabili...

the aim of this investigation was to assess the effect of different antioxidants on the motility andmembrane integrity of the ram semen during storage at 5ºc for 0, 12, 24, 48 and 72 hrs after collection anddilution. a total of 57 ejaculates from 12 bakhtiary rams was collected by artificial vagina and were extended1 : 3 with egg yolk-citrate buffer, which was containing one of the following an...

in this study, the relationship between components of knowledge management on the basis of m. mc olrvy model and social capital has been studied, statistical population consisted of employees of ministry of energy, who were selected among employees of hamedan regional power and were 420 subjects. research tool is a questionnaire and spss statistical software is used for data analysis and struct...