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001-es BibID:	BIBFORM061809
Első szerző:	Kováts Dávid (környezetgazdálkodási agrármérnök)
Cím:	Morphological classification of conspecific birds from closely situated breeding areas : A case study of the Common Nightingale / Kováts Dávid, Harnos Andrea
Dátum:	2015
ISSN:	1215-1610 2061-9588
Megjegyzések:	In this paper, a complex morphological comparison of four Common Nightingalegroups (Luscinia megarhynchos) is demonstrated. In total, 121 territorial nightingales were mist-netted andmeasured individually on four study areas called 'Bódva', 'Felső-Tisza', 'Szatmár-Bereg' and 'Bátorliget' in theNorth-Eastern part of Hungary in 2006-2013. To distinguish groups by morphology, Classification and RegressionTrees (CART), Random Forest (RF) and Linear Discriminant Analysis (LDA) methods were used. Comparisonof the four studied Common Nightingale groups shows substantial morphological differences in the length of thesecond, the third and the fourth primaries (P2, P3, P4), in bill length (BL) and bill width (BW), while other characteristicsshowed greater similarities. Based on the results of all the applied classification methods, birds originatedfrom Szatmár-Bereg were clearly distinguishable from the others. The differences in morphology can be explainedby interspecific competition or phenotypic plasticity resulting from the change of ecological, environmental parameters.Our case study highlights the advantageous differences of the classification methods to distinguish groupswith similar morphology and to choose important variables for classification. In conclusion, broad application ofthe classification methods RF and CART is highly recommended in comparative ecological studies.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény hazai lapban Luscinia megarhynchos classification and regression trees random forest linear discriminant analysis morphological classification
Megjelenés:	Ornis Hungarica. - 23 : 2 (2015), p. 20-30. -
További szerzők:	Harnos Andrea
Internet cím:	Szerző által megadott URL Intézményi repozitóriumban (DEA) tárolt változat
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