Perrault Bog

This acidic environment was a hotspot for algal diversity.

Algal scum contained many desmids and cyanobacteria.

Batrachospermum was visible near the bank.

Perrault Lake

In contrast, the nearby lake contained a similar algal community to other lakes on the Keweenaw Peninsula.

Calumet Lake

Boston Pond

Keweenaw Waterway at MTU

Similar to these lakes, the plankton of this shipping canal was dominated by diatoms.

But submerged rocks along the bank supported various filamentous green algae and diatoms.

Dollar Bay

In contrast to the connecting Keweenaw Waterway, this inlet contained much higher algal diversity,

including several planktonic chlorophytes that were rarely encountered elsewhere.

Low abundances and moderate diversity was encountered in the open  waters.

Surprisingly, this large but shallow lake contained many desmids not found elsewhere.

pond at Moyle Concrete

Smaller ponds typically contained more distinct algal communities, unlike most of the larger lakes.

In this pond, Chara was observed near the bank with structures for sexual reproduction.

Swedetown Pond

Nitella was found in this pond.

pond adjacent to Osceola Rd

The plankton of these ponds were dominated by Dinobryon and not much of anything else,

regardless of which side of the road was sampled.

But new inhabitants were encountered in spring.

swampy area at Osceola ponds

Adjacent swampy areas contained higher diversity and some distinct forms,

among plant debris in shallow water.

pond on Peepsock Trail

Aquatic plants covered the bottom of this shallow and productive pond,

and a film of slimy Spirogyra accumulated  near the shore.

Peepsock drainage stream

Its discharge contained a characteristic community as well,

particularly an abundance of Trachelomonas and Peridinium among the aquatic plants.

Arnheim Sloughs

This location was another smaller water body with a characteristic community.

Moreover, nearby isolated puddles contained  some unique taxa that weren't seen elsewhere,

and even Mallards took refuge there.

Pilgrim River

Flowing waters generally lack phytoplankton,

but the brown scum on submerged rocks contained many diatoms,

and aquatic plants in the gradual flow of the lower reaches also contained algae.

Gratiot River

Clear water riffles of this river contained algae as well,

particularly tuffs of Spirogyra

and mats of Oscillatoria.

In the swifter moving waters of this creek,

Cladophora and Vaucheria were found attached to the rocky substrate and on logs.

ditch outside of Swedetown

The unique habitats of smaller water bodies sometimes supported distinct forms.

ditch at Superior Block

So I sampled tiny ditches and puddles, some ephemeral, as well as larger lakes and rivers.