|
|
|
|
|
| Gowen, R. J.; Collos, Y.; Tett, P.; Scherer, C.; Bec, B.; Abadie, Eric; Allen, M.; O'Brien, T.. |
| The basin of Thau in southern France is a shallow, weakly flushed lagoon which is an important location for oyster cultivation. Phytoplankton analyses were carried out in 1975-1976 and then (almost) continuously since 1987. We report an investigation of 'the balance of organisms' in phytoplankton in relation to reductions in phosphorus loading, using two new tools based on phytoplankton lifeforms: the Plankton Index for Phytoplankton (PIp); Euclidean distance in state space. Our results show the utility of the tools for analysing changes in the ‘balance of organisms’ at the level of functional groups (in our study diatoms and dinoflagellates), but also illustrate the difficulties in demonstrating the reversal of human impacts resulting from eutrophication.... |
| Tipo: Text |
Palavras-chave: Eutrophication; Thau lagoon; Phosphorus; Lifeform; State-space; Euclidean distance. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00257/36817/35449.pdf |
| |
|
|
| Sousa,Angela Maria de; Oliveira,Maria do Socorro Padilha de; Farias Neto,João Tomé de. |
| Abstract: The objective of this work was to quantify the genetic divergence among accessions of white-type acai palm, through morpho-agronomic characters. The accessions belong to the active acai palm germplasm bank of Embrapa Amazônia Oriental. Thirteen characters were evaluated in 26 accessions, originated from six municipalities in the state of Pará, Brazil. The data were subjected to deviance and multivariate analyses, based on the average Euclidean distance, and were grouped by Tocher’s method and the unweighted pair group method with arithmetic mean (UPGMA). The accessions differed for eight characters. The distances among accessions ranged from 0.64 to 2.62, with an average of 1.36, and four groups were formed by Tocher’s method and two by the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Euterpe oleracea; Euclidean distance; Groupings.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000900751 |
| |
|
| |
|
|
| Darvishzadeh,Reza; Mirzaei,Leila; Maleki,Hamid Hatami; Laurentin,Hernan; Alavi,Seyyed Reza. |
| The objectives of this study were to assess genetic diversity and determine differences between several oriental tobacco genotypes by examining both agro-morphological traits and molecular markers. Simple lattice design with two replications was used to evaluate 100 oriental tobacco genotypes. Analysis of variance manifested that there is high level of genetic diversity in oriental-type tobaccos based on morphological traits including number of leaf, days to 50% flowering, leaf length, leaf width, leaf fresh weight, leaf dry weight, stem height and stem girth. Classification of genotypes using agro-morphological data by means of un-weighted pair-group method using arithmetic average (UPGMA) algorithm based on squared standardized Euclidean distances... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cluster analysis; Euclidean distance; Genetic diversity; Jaccard's similarity; Oriental tobacco. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000200018 |
| |
|
|
|
