Phacus pyrum

From Black Sea Phytoplankton checklist

Phacus pyrum (Ehrenberg) F. Stein, 1878

Classification

Protozoa (Kingdom) > Euglenozoa (Phylum) > Euglenoidea (Class) > Euglenida (Order) > Phacaceae (Family) > Phacus (Genus)

WoRMS: 163341

Properties

Environment: freshwater

Occurrence

	References
Black Sea
Bulgaria
Geogria
Romania
Russia
Turkey
Ukraine	Zaitsev Y.P. & B.G. Alexandrov, 1998; Nesterova D.A., Terenko L.M., Terenko G.V., 2006 (NW); Ivanov A.I. 1959; Ivanov A.I. 1960;

Volume and surface area calculation

	Shape
Simple shape
K(flattening factor)
More accurate shape	-

Hillebrand et al., 1999 - elliptic prism
(The euglenoid algae are variable in shape and cross-section (Rott 1981). Most Euglena sp. are not round, but flattened in cross-section. Therefore the obtuse pole is calculated as a half ellipsoid, the acute pole as cone with an elliptical base (Siko-Goad et al 1977 propose a similar shape with a cylinder instead of a cone). The smaller and wider diameters have to be measured as well as the height of the cone and the length of the obtuse pole. Some Euglena sp. are so flat that they resemble a flat elliptic prism.) (Hillebrand, H., Dürselen, C. D., Kirschtel, D., Pollingher, D. and Zohary, T. (1999) Biovolume calculation for pelagic and benthic microalgae. J. Phycol., 35, 403–424)

Appearance in checklists

1886

1900

1950

2000

2010

1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	33	34	35	36	38	49	54	55	56	57
							x																			x ²⁷

58	63	67	68	72	73	74	75	77	78	84	85	86	87	88	89	92	93	94	99	100	101	102	103	105	108	109	110	116	117	118	119	120	123	125
															x	x

27 - as Phacys pyrum (Ehr.) Stein, 1831;

References

Ivanov A. I., 1959. About phytoplankton mass development in the Northern-Western part of the Black Sea in 1954 - 1956. Proceedings of Odessa Biological Station(1): 6 - 33.

Ivanov A. I., 1960. Characteristics of qualitative composition and quantitative distribution of phytoplankton in the north-western Black Sea. Transactions of the hydrobiological society of the USSR, Vol. X: 182 - 196.

Nesterova D.A., Terenko L.M., Terenko G.V., 2006. In: North-Western part of the Black Sea: biology and ecology, Naukova dumka, Kiev: 557-576.^*
* - as Phacys pyrum (Ehr.) Stein, 1831

Zaitsev_Y._P._&_B._G._Alexandrov,_1998. Black Sea Biological Diversity, Ukraine. Black Sea Environmental Series, Vol. 7, United Nations Publication, New York, 351 pp.

	List based on literature analysis
	List extracted from database
	List extracted from published paper, which is based on monitoring(scientific) research of scientist(s) and includes analysis of real collected data
	Personal list, based on monitoring(scientific research) of scientist (not published as article)
	Identification book

Last revision on 20-05-2013

ToDo: 27 is the ame species? misspelling??