Embodied energy analysis and EMERGY analysis: a comparative view

Brown, Mark T.; Herendeen, Robert A.

doi:10.1016/s0921-8009(96)00046-8

Cited by 416 publications

(208 citation statements)

References 21 publications

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“…For an in-depth discussion of this issue and the differences between energy and emergy analyses, see Brown and Herendeen (1997). For our purpose it is important to note that in our calculations among solar energy, rain and wind only the highest of the three contributions to the total emergy flow will be considered, since they are co-products of the same phenomenon, i.e., the sunlight reaching the biosphere (Odum, 1996).…”

Section: Emergy Evaluationmentioning

confidence: 99%

Sustainability of poultry production using the emergy approach: Comparison of conventional and organic rearing systems

Castellini

Bastianoni

Granai

et al. 2006

Agriculture, Ecosystems & Environment

169

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The organic production system is an important strategy, compatible with sustainable agriculture, avoiding the use of chemical compounds, limiting the intensity of production and providing controls along the entire chain of production. The aim of this study is to compare conventional and organic poultry production in terms of emergy analysis. The main differences in the two systems were the emergy cost for poultry feed and for cleaning/sanitization of the buildings between successive productive cycles. In both production systems the poultry feed represented more than 50% of the emergy flow. Regarding the agronomic phase, it was shown that almost all the organic crops, avoiding chemical fertilizers and pesticides, saved around 60% emergy. The emergetic costs for housing of the birds were very similar in both systems. Relating the emergy results with productive performance it is possible to show that, although the annual productive performance was much lower in organic than in conventional (À206%), transformity of organic poultry was around 10% lower. Comparison of the organic poultry system with a conventional one from the viewpoint of sustainability showed that all the emergy-based indicators are in favour of the organic farming system with a higher efficiency in transforming the available inputs in the final product, a higher level of renewable inputs, a higher level of local inputs and a lower density of energy and matter flows. #

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Section: Emergy Evaluationmentioning

confidence: 99%

Sustainability of poultry production using the emergy approach: Comparison of conventional and organic rearing systems

Castellini

Bastianoni

Granai

et al. 2006

Agriculture, Ecosystems & Environment

169

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“…Excluding the extreme seagrass meadow outlier of $2.3 million ha -1 yr -1 (Vassallo et al 2013) determined using the abstract concept of emergy (Brown and Herendeen 1996), there is again considerable variation, from $78 ha -1 yr -1 ) to $141,094 ha -1 yr -1 (Engeman et al 2008), both of which measure provisioning ecosystem services only (table 5). A remarkably similar seagrass value to that of Unsworth and colleagues (2010) is cited by Samonte-Tan et al (2007), but the latter study purports to measure a much wider range of economic values and ecosystem services than those evaluated by the former.…”

Section: Resultsmentioning

confidence: 99%

Valuing and Evaluating Marine Ecosystem Services: Putting the Right Price on Marine Environments?

Clifton¹,

Cullen-Unsworth²,

Unsworth³

2014

Environment and Society

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Ⅲ ABSTRACT: Th e fl ow of ecosystem services from coral reefs, seagrass meadows and mangrove forests sustains the livelihoods of billions of people worldwide. Faced with the global degradation of marine and coastal ecosystems, policy makers are increasingly focusing on ecosystem service valuation techniques to encourage conservation and sustainable use of marine resources. Here we provide a review and synthesis of the available information on economic valuation techniques as applied to tropical marine habitats. Our study demonstrates the high variability and lack of consistency in outcomes from these studies. We conclude that, if the concept of ecosystem goods and services is to make a positive contribution towards managing the impacts of humans on the environment, then economic valuation approaches must refl ect the inherent limitations of economic theory whilst emphasizing the complexity and heterogeneity of the natural environment and human decision making.

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“…A fundamental principle of emergy analysis is the Maximum Empower Principle. It states that ''systems that will prevail in competition with others, develop the most useful work with inflowing emergy sources by reinforcing productive processes and overcoming limitations through system organization'' (Brown and Herendeen, 1996).…”

Section: Emergy Analysismentioning

confidence: 99%

Structural complexity analysis for industrial ecosystems: A case study on LuBei industrial ecosystem in China

Chen

Wang

Yang

et al. 2010

Ecological Complexity

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Embodied energy analysis and EMERGY analysis: a comparative view

Cited by 416 publications

References 21 publications

Sustainability of poultry production using the emergy approach: Comparison of conventional and organic rearing systems

Sustainability of poultry production using the emergy approach: Comparison of conventional and organic rearing systems

Valuing and Evaluating Marine Ecosystem Services: Putting the Right Price on Marine Environments?

Structural complexity analysis for industrial ecosystems: A case study on LuBei industrial ecosystem in China

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