Diatoma ehrenbergii
Kutzing, 1844
Common Name:
A pennate diatom
Synonyms and Other Names:
Diatoma vulgare var. ehrenbergii, Diatoma vulgaris var. ehrenbergii, Diatoma vulgaris var. grande
Identification:
The cells of this species are oblong-shaped with narrow knob-like poles. They somewhat resemble rolling-pins with shortened handles. Their outer surface exhibits horizontal, parallel markings. Description based on Pfister (1992). Also see Kelly et al. (2005).
Size:
30-120 microns in length, 6-9 microns wide (Kelly et al. 2005, Pfister 1992)
Native Range:
Unknown. Diatoma ehrenbergii is widespread. It has been recorded from Poland (Kawecka and Sanecki 2003), Antarctica (Kawecka and Olech 1998), Italy (Bona et al. 2007), France (Eulin and Le Cohu 1998), and Turkey (Dere et al. 2002).
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This map only depicts Great Lakes introductions.
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Great Lakes Nonindigenous Occurrences:
Diatoma ehrenbergii was recorded for the first time from Lake Michigan in the 1930s and in subsequent years from Lake Huron (Mills et al. 1993, Stoermer and Yang 1969).
Table 1. Great Lakes region nonindigenous occurrences, the earliest and latest observations in each state/province, and the tally and names of HUCs with observations†. Names and dates are hyperlinked to their relevant specimen records. The list of references for all nonindigenous occurrences of Diatoma ehrenbergii are found here.
Table last updated 4/23/2024
† Populations may not be currently present.
Ecology:
Diatoma ehrenbergii occurs in fresh to brackish water. It has been recorded in mesotrophic to eutrophic conditions and can occur in the plankton, epiphytically (on plants), and epilithically (on rocks). It is often considered somewhat alkaliphilic (prefers high pH). It may occur among other assemblages living in waters ranging from low to high oxygen concentrations, with moderately high to low levels of organic decomposition (oligosaprobic to beta-mesosaprobic ) (Bona et al. 2007, Dere et al. 2002, Eulin and Le Cohu 1998, Mills et al. 1993, Stoermer et al. 1971).
Means of Introduction:
Diatoma ehrenbergii was very likely introduced to the Great Lakes in ballast water (Mills et al. 1993).
Status:
Established where recorded.
Great Lakes Impacts:
There is little or no evidence to support that Diatoma ehrenbergii has significant environmental impacts in the Great Lakes.
Realized:
Diatoma ehrenbergii was recorded at a low abundance in eutrophic areas of Lake Michigan, Saginaw Bay, and Lake Huron (Mills et al. 1993, Stoermer and Yang 1969). As such, the extent of any impacts is likely to be limited.
There is little or no evidence to support that Diatoma ehrenbergii has significant socio-economic impacts in the Great Lakes.
There is little or no evidence to support that Diatoma ehrenbergii has significant beneficial effects in the Great Lakes.
Management:
Regulations (pertaining to the Great Lakes region)
There are no known regulations of this species.
Note: Check federal, state/provincial, and local regulations for the most up-to-date information.
Control
Biological
There are no known biological control methods for this species.
Physical
There are no known physical control methods for this species.
Chemical
Diatoma ehrenbergii was recorded in eutrophic waters in the Great Lakes (Stoermer and Yang 1969). The reduction of pollution and nutrient run-off could decrease the viable habitat for D. ehrenbergii.
Note: Check state/provincial and local regulations for the most up-to-date information regarding permits for control methods. Follow all label instructions.
References
(click for full reference list)
Author:
Kipp, R.M., M. McCarthy, and A. Fusaro
Contributing Agencies:
Revision Date:
9/12/2019
Citation for this information:
Kipp, R.M., M. McCarthy, and A. Fusaro, 2024, Diatoma ehrenbergii Kutzing, 1844: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, and NOAA Great Lakes Aquatic Nonindigenous Species Information System, Ann Arbor, MI, https://nas.er.usgs.gov/queries/greatlakes/FactSheet.aspx?Species_ID=1670&Potential=N&Type=0&HUCNumber=DHuron, Revision Date: 9/12/2019, Access Date: 4/23/2024
This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.