MARQUETTE, Mich.—Four biology seminars are scheduled this week at Northern Michigan University. All will be held in Mead Auditorium in the West Science Building. They are free and open to the public.  

Paul Clark from the department of zoology at the Natural History Museum in London, England, will present “Chinese Mitten Crabs and Chips: Invasive Species Control in UK Rivers” at 10 a.m. Wednesday, Oct. 23. At 4 p.m. that same day, master’s degree candidate Julie Howard will present “Diet Comparison of Native and Introduced Salmonids in a Tributary to Lake Superior.”

The remaining two seminars are scheduled on Friday, Oct. 25. Master’s degree candidate Rachael Guth will address “Urbanization Effects on Overwintering Brook and Brown Trout: Fist Condition and Movement” at 2 p.m. Clark will present “Crabs, Eels and Rubbish: Long-Term Studies on London’s River Thames” at 4 p.m.

The two seminars featuring Clark are co-sponsored by the departments of biology and earth, environmental and geographical sciences.