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Original scientific paper

Morphotype variations in subfossil diatom species of Aulacoseira in 24 Michigan Lakes, USA

Kalina M. Manoylov ; Department of Biological and Environmental Sciences, Georgia College and State University, Milledgeville, GA 31061 USA
Nadja Ognjanova-Rumenova ; Institute of Geology, Bulgarian Academy of Sciences, Acad. G. Bonchev str. 24, 1113 Sofia, Bulgaria
Robert Jan Stevenson ; Department of Zoology, Michigan State University, East Lansing, MI 48824 USA

Fulltext: english, pdf (656 KB) pages 401-419 downloads: 1.369* cite
APA 6th Edition
Manoylov, K.M., Ognjanova-Rumenova, N. & Stevenson, R.J. (2009). Morphotype variations in subfossil diatom species of Aulacoseira in 24 Michigan Lakes, USA. Acta Botanica Croatica, 68 (2), 401-419. Retrieved from https://hrcak.srce.hr/41438
MLA 8th Edition
Manoylov, Kalina M., et al. "Morphotype variations in subfossil diatom species of Aulacoseira in 24 Michigan Lakes, USA." Acta Botanica Croatica, vol. 68, no. 2, 2009, pp. 401-419. https://hrcak.srce.hr/41438. Accessed 2 Dec. 2021.
Chicago 17th Edition
Manoylov, Kalina M., Nadja Ognjanova-Rumenova and Robert Jan Stevenson. "Morphotype variations in subfossil diatom species of Aulacoseira in 24 Michigan Lakes, USA." Acta Botanica Croatica 68, no. 2 (2009): 401-419. https://hrcak.srce.hr/41438
Harvard
Manoylov, K.M., Ognjanova-Rumenova, N., and Stevenson, R.J. (2009). 'Morphotype variations in subfossil diatom species of Aulacoseira in 24 Michigan Lakes, USA', Acta Botanica Croatica, 68(2), pp. 401-419. Available at: https://hrcak.srce.hr/41438 (Accessed 02 December 2021)
Vancouver
Manoylov KM, Ognjanova-Rumenova N, Stevenson RJ. Morphotype variations in subfossil diatom species of Aulacoseira in 24 Michigan Lakes, USA. Acta Botanica Croatica [Internet]. 2009 [cited 2021 December 02];68(2):401-419. Available from: https://hrcak.srce.hr/41438
IEEE
K.M. Manoylov, N. Ognjanova-Rumenova and R.J. Stevenson, "Morphotype variations in subfossil diatom species of Aulacoseira in 24 Michigan Lakes, USA", Acta Botanica Croatica, vol.68, no. 2, pp. 401-419, 2009. [Online]. Available: https://hrcak.srce.hr/41438. [Accessed: 02 December 2021]

Abstracts
Diatom assemblages preserved in lake sediment records can provide proxy data of past environmental changes in biological conditions. In order to investigate past changes in the environment of north-central Michigan, diatom assemblages were studied in sediment cores retrieved from 24 lakes. Diatoms were analyzed from the 'top' and 'bottom' of each core to reconstruct land-use changes in this area. Aulacoseira taxa were identified and evaluated with light and scanning electron microscopy. Results of these observations showed the presence of some variability of the morphological features within North American species populations. Diatom species composition in surface sediments and differences between tops and bottoms corresponded to changes in land use surrounding the lakes, ranging from predominantly forest and rangeland to urban and agriculturally impacted. Diatom-inferred past conditions revealed that the observed morphotypes probably represent taxa with different ecological preferences. The main factors influencing the variability of these morphotypes are changes in the trophic status of the lakes.

Keywords
diatom; Aulacoseira; ultrastructure; sediment; distribution; morphotype; Michigan lakes

Hrčak ID: 41438

URI
https://hrcak.srce.hr/41438

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