FAO Fisheries Technical Paper No 217: Conservation of the Genetic Resources of Fish: Problems and Recommendations. = Report of the Expert Consultation on the Genetic Resources of Fish, Rome 9–13 June 1980. — 44 pp. Rome: FAO 1981. ISBN 92‐5‐101173‐7

Barthelmes, D.

doi:10.1002/iroh.3510680614

Cited by 2 publications

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“…This inbreeding threshold, however, should be viewed as a shortterm criterion, rather than the ultimate goal, as continuous inbreeding leads to a gradual attrition of genetic variation. A population with consistent Ne around 50 will lose about one-fourth of its genetic variation after 20 to 30 generations, and along with it, much of its capacity to adapt to the changing conditions (Barthelmes, 1983). The 50/500 concept was proposed as a benchmark when considering risk of extinction.…”

Section: Effective Population Sizementioning

confidence: 99%

Genomic descriptors of biodiversity – A review

Mészáros

2018

Die Bodenkultur: Journal of Land Management, Food and Environment

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Summary The characterization of livestock genetic diversity has experienced extensive changes with the availability of dense nucleotide markers. Among the various forms of markers, the single nucleotide polymorphisms (SNP) have arguably the largest influence. A wide range of indicators for the assessment of genetic diversity was developed, or the existing methods were improved, enabling us to make informed decisions on the management of livestock populations. This review discusses the selected aspects of diversity assessment, with special attention to the SNP based methods. One of the core concepts in genomics of diversity is the linkage disequilibrium (LD), as it was shaped by demographic events during the development of breeds and species. These events, either natural or artificial, left detectable signals within the livestock genomes. Further changes were induced by human activity when mating related animals, leading to fixing or improving the desired traits in the breed, but reducing their genetic variability. The assessment of relatedness is also pivotal to construct meaningful mating plans and to avoid the negative consequences of inbreeding depression that might be detrimental especially in small, endangered populations. Both LD and relatedness are of interest on their own, as well as in their follow-up applications deriving overall measures of effective population size.

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Section: Effective Population Sizementioning

confidence: 99%

Genomic descriptors of biodiversity – A review

Mészáros

2018

Die Bodenkultur: Journal of Land Management, Food and Environment

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“…The soils studied are loamy sand or sandy loam with sand percentage ranging from 53% to 83% except soil from Boro Dighir Par that has relatively low sand content (33%). High sand content of the soils in this region may be explained by their origin from sandstone parent materials [23]. Most sites were homogeneous in terms of their pH and organic matter content.…”

Section: Soil Propertiesmentioning

confidence: 84%

Assessment of Heavy Metal Contamination in Urban Soils of Chittagong City, Bangladesh

Alamgir

Islam

Hossain

et al. 2015

IJPSS

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In order to assess the distribution of heavy metals in the urban environment; concentrations of Cd, Cu, Pb, Mn, Ni and Zn were measured on 21 topsoil samples collected from roadside soils of Chittagong city. The heavy metal concentrations were determined by flame atomic absorption spectrometry after digesting the soils with nitric acid-perchloric acid. Mean Cd, Cu, Pb, Mn, Ni and Zn concentrations of the investigated urban soils are 2. 43, 32.63, 7.33, 160.79, 860.33, 139.30 mg kg -1 respectively. Compared to urban soils of some other cities in the world Cu, Cd, Pb, Mn and Zn concentrations were somewhat similar. Ni concentration largely exceeded the maximum allowable concentration (60 mg kg -1) indicating high contamination. Stepwise multiple regression indicated that soil properties was responsible for 37 to 42% variation in Cd, Cu and Pb content and in case of Ni it was only 16%. The main sources of Ni contamination in Chittagong city can be considered as anthropogenic sources.

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FAO Fisheries Technical Paper No 217: Conservation of the Genetic Resources of Fish: Problems and Recommendations. = Report of the Expert Consultation on the Genetic Resources of Fish, Rome 9–13 June 1980. — 44 pp. Rome: FAO 1981. ISBN 92‐5‐101173‐7

Cited by 2 publications

References 0 publications

Genomic descriptors of biodiversity – A review

Genomic descriptors of biodiversity – A review

Assessment of Heavy Metal Contamination in Urban Soils of Chittagong City, Bangladesh

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