نتایج جستجو برای: indicator species

تعداد نتایج: 618489  

The peel components of Mandarin, Sour lemon and Sour orange were analyzed. Peel flavorcomponents were extracted using cold-press method and eluted using n-hexane. All compoundswere analyzed using GC-FID and GC-MS. Twenty-seven, Twenty-four and Twenty-nine peelcomponents were identified in Mandarin, Sour lemon and Sour orange respectively. They includealdehydes, alcohols, esters, monoterpenes an...

2005
PETER B. LANDRES

Plant and animal species have been used for decades as indicators of air and water quality and agricultural and range conditions. Increasingly, vertebrates are used to assess population trenak and habitat quality for other species. I n this paper we review the conceptual bases, assumptions, and published guidelines for selection and use of vertebrates as ecological indicators. We conclude that ...

2009
David Sewell Richard A. Griffiths

Although amphibians have been widely promoted as indicators of biodiversity and environmental change, rigorous tests are lacking. Here key indicator criteria are distilled from published papers, and a species that has been promoted as a bioindicator, the great crested newt, is tested against them. Although a link was established between the presence of great crested newts and aquatic plant dive...

2013
Takeshi Osawa Kazunori Kohyama Hiromune Mitsuhashi

Human-driven land-use changes increasingly threaten biodiversity. In agricultural ecosystems, abandonment of former farmlands constitutes a major land-use shift. We examined the relationships between areas in which agriculture has been abandoned and the distribution records of threatened plant species across Japan. We selected 23 plant species that are currently identified as threatened but wer...

Journal: :Telematics and Informatics 2015
Ajay Kumar Ravi Shankar Roma Mitra Debnath

The purpose of this research paper is to develop a framework to understand the consumer’s preference affecting variables and consumer’s perception choice in telecommunication service providers in India. The present study use a hybrid approach to access the relative efficiency based on fuzzy AHP and DEA model. The fuzzy AHP is used to determine weights of the consumer’s preference as criteria an...

Journal: :Conservation biology : the journal of the Society for Conservation Biology 2006
Melodie A McGeoch Steven L Chown Jesse M Kalwij

"Trends in invasive alien species" is one of only two indicators of threat to biodiversity that form part of the Convention on Biological Diversity's (CBD) framework for monitoring progress toward its "2010 target" (i.e., the commitment to achieve by 2010 a significant reduction in the current rate of biodiversity loss). To date, however, there is no fully developed indicator for invasive alien...

2000

Discusses the interaction between socio-economic systems and their natural environment, by examining the indicators of sustainable development. Areas covered by the operationalization of sustainable development indicators; Details on the global nature of environmental problems; Important strategy of the operationalization of sustainable development; Link between economic data and ecological ind...

ژورنال: ایمنی زیستی 2019
Abyar, hajar, lamoochi, razieh, Mojodi, Fatemeh, Safahieh, Alireza, Salamat, Negin, shahaliyan, fatemeh, Zaredoost, Mostafa,

Today's most of microorganisms are used for purification of hazard waste such as municipal and industrial waste water and oil contaminants. In this study 2 bacterial species were isolated and purified in hydrocarbon (anthracene) containing media from oil polluted sediment of Imam Khomeini port. Bacillus pasteurii and Amphibacillus xylanus species were identified as indicator degrading bacteria ...

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