Comment on “Rate of species introductions in the Great Lakes via ships’ ballast water and sediments”

2008 ◽  
Vol 65 (3) ◽  
pp. 549-553 ◽  
Author(s):  
Janet W Reid ◽  
Patrick L Hudson
Keyword(s):  
Great Lakes ◽  
Ballast Water ◽  
Native Species ◽  
Laurentian Great Lakes ◽  
Great Lakes Region ◽  
Species Introductions ◽  
Neoergasilus Japonicus ◽  
Brackish Water Species ◽  
Current List ◽  
Water Species

The four species of freshwater copepod crustaceans found in ballast water or sediments in ships and characterized as “nonindigenous” to the Laurentian Great Lakes region by Drake and Lodge (Can. J. Fish. Aquat. Sci. 64: 530–538 (2007)) are all widespread, North American natives. Drake and Lodge’s use of these native species to estimate the size of the “source pool” of the richness of potential invasive species resulted in an overestimation of its size. We list the fresh- and brackish-water species of copepods found in or on ships in the Great Lakes and discuss taxonomic and other questions pertaining to some of them. We suggest that Skistodiaptomus pallidus, Cyclops strenuus, Salmincola lotae, Nitokra incerta, and Onychocamptus mohammed be removed from the current list of nonindigenous copepod and branchiuran species established in the Great Lakes system, leaving seven species: Eurytemora affinis, Megacyclops viridis, Neoergasilus japonicus, Heteropsyllus nunni, Nitokra hibernica, Schizopera borutzkyi, and Argulus japonicus.

Notholca laurentiae and N. michiganensis, New Rotifers from the Laurentian Great Lakes Region

1976 ◽  
Vol 33 (12) ◽  
pp. 2814-2818 ◽  
Author(s):  
Richard S. Stemberger
Keyword(s):  
Great Lakes ◽  
Early Spring ◽  
Laurentian Great Lakes ◽  
Great Lakes Region ◽  
Inland Lakes ◽  
Northern Portion ◽  
Lower Peninsula ◽  
Planktonic Rotifers ◽  
Brackish Water Species ◽  
Water Species

The descriptions of two new planktonic rotifers, both cold stenotherms, is presented. Notholca laurentiae n.sp. is a predominant winter rotifer of the Laurentian Great Lakes, but to date has not been found in inland lakes of the region. Morphologically its closest relative is the European brackish water species, N. salina Focke.Notholca michiganensis n.sp. has been recorded only in the oligotrophic inland lakes of the northern portion of Michigan’s lower peninsula during winter and early spring (water temperatures 0.5–5.2 C). Morphologically, N. michiganensis is similar to, but distinctly smaller than N. frigida Jaschnov.

A 900-year record of effective moisture in the Laurentian Great Lakes region

2021 ◽  
Vol 270 ◽  
pp. 107174
Author(s):  
R.M. Doyle ◽  
Z. Liu ◽  
J.T. Walker ◽  
R. Hladyniuk ◽  
K.A. Moser ◽  
...  
Keyword(s):  
Great Lakes ◽  
Laurentian Great Lakes ◽  
Great Lakes Region ◽  
Effective Moisture

scholarly journals Climatic-change implications from long-term (1823-1994) ice records for the Laurentian Great Lakes

1995 ◽  
Vol 21 ◽  
pp. 383-386 ◽  
Author(s):  
R.A. Assel ◽  
D.M. Robertson ◽  
M.H. Hoff ◽  
J.H. Selgeby
Keyword(s):  
Great Lakes ◽  
Climatic Changes ◽  
The Other ◽  
Laurentian Great Lakes ◽  
Great Lakes Region ◽  
Lake Mendota ◽  
Air Temperatures ◽  
The 1960S ◽  
Different Parts

Long-term ice records (1823-1994) from six sites in different parts of the Laurentian Great Lakes region were used to show the type and general timing of climatic changes throughout the region. The general timing of both freeze-up and ice loss varies and is driven by local air temperatures, adjacent water bodies and mixing, and site morphometry. Grand Traverse Bay and Buffalo Harbor represent deeper-water environments affected by mixing of off-shore waters; Chequamegon Bay, Menominee, Lake Mendota, and Toronto Harbor represent relatively shallow-water, protected environments. Freeze-up dates gradually became later and ice-loss dates gradually earlier from the start of records to the 1890s in both environments, marking the end of the “Little lce Age”. After this, freeze-up dates remained relatively constant, suggesting little change in early-winter air temperatures during the 20th century. Ice-loss dates at Grand Traverse Bay and Baffalo Harbor but not at the other sites became earlier during the 1940s and 1970s and became later during the 1960s. The global warming of the 1980s was marked by a trend toward earlier ice-loss dates in both environments.

Toxicological significance of mercury in yellow perch in the Laurentian Great Lakes region

2012 ◽  
Vol 161 ◽  
pp. 350-357 ◽  
Author(s):  
James G. Wiener ◽  
Mark B. Sandheinrich ◽  
Satyendra P. Bhavsar ◽  
Joseph R. Bohr ◽  
David C. Evers ◽  
...  
Keyword(s):  
Great Lakes ◽  
Yellow Perch ◽  
Laurentian Great Lakes ◽  
Great Lakes Region ◽  
Toxicological Significance

7. Examining the Impacts of Zebra Mussels as an Invasive Species in the Great Lakes Region and the Role of Stakeholders in Effective Mitigation Strategies

2018 ◽  
Author(s):  
Shuang Liang
Keyword(s):  
Great Lakes ◽  
Native Species ◽  
Public Awareness ◽  
Management Strategies ◽  
Zebra Mussels ◽  
Mitigation Strategies ◽  
Trophic Levels ◽  
Light Transmittance ◽  
Great Lakes Region ◽  
The Impact

Zebra mussels were first introduced into the Great Lakes region in 1988, via the ballast water of international ships traveling through the St. Lawrence River. Since then, the aggressive colonization of zebra mussels have had devastating effects on the native aquatic biodiversity in the Great Lakes region. The continued proliferation of zebra mussels have led to increased filtering, high light transmittance through water and growth of benthic (lowest level of a body of water) plants. Due to the intensive filtration of zebra mussels, rapid bioaccumulation of botulinum toxin in their systems have caused high levels of mortality for waterfowl predators. As zebra mussels continue to dominate in predator-prey interactions and interspecies competition, a shift in the ecosystem equilibrium is occurring on varying trophic levels. These changes have not gone unnoticed. Zebra mussels have cost Canadian industries, businesses and communities over $5 billion in a single decade in clogged pipes and turbine damages. The associated economic repercussions from infrastructural damages and native species declines necessitate engagement from a multitude of stakeholders. Public awareness is absolutely vital in minimizing the impact of zebra mussels and preventing their distribution across freshwater in North America. In this presentation, I will discuss the ecological, economic and societal impacts of zebra mussels since their introduction to the Great Lakes region. In addition, I will examine a multitude of management strategies and recommendations to government, private sector and public stakeholders to reduce future impacts of mussels in the Great Lakes region.

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