I'm reiterating and expanding on highlights from other answers and adding a cautionary anecdote.
First off, as noted in a comment, please confirm with local environmental protection agencies if you are permitted to enter these bogs. Regardless of their answer, know that these are inherently quite sensitive environments and your wading will disturb them. Will they bounce back? Certainly possible. Will whatever chemicals you inevitably introduce to them alter the ecosystem? Undoubtedly to some extent. How much / does it matter? Thus why I say ask the local agency.
Now regarding these areas being sensitive, that is part of their beauty (and their danger...we'll get into that in next paragraph), and for that reason I highly recommend Erik's advice about using a canoe to explore these areas. I read the comments there and recognize how canoeing could seem like a less intimate experience than wading around. However, as noted there, you can take the best of both worlds: canoe to explore a broader area, and park it on shore to wade around in shallower, safer spots you want to get more up close to. The added benefit of canoeing, as Erik noted, is it will cause less disturbance. You can cover quite a bit of ground, or simply float in place, and will not be making much noise or disturbing the water, soils, and various creatures. You will feel much more intimately connected to the place when it is in its usual state and not all turbulent, mucked up, and quieted down out of fear from disturbance.
Regarding disturbance and actually wading in northern bogs: Chris and Russel gave good advice about bringing a long sturdy stick, being prepared to drop any heavy items from you, and prepping your bag to float. Know what threatening creatures might live there; in that neck of the woods it's probably not much, but moose can be serious and you will be like a fish in a barrel if one wants to attack while you're wading. Not likely, but tragically possible. The main danger to you I want to emphasize is how "quicksand" like these bogs can be, and I speak from personal experience working in these areas. What appears as land is often thick mats of mossy material, perched on roots or floating. You can, and almost certainly will eventually, find your foot going through the mat and into the water below it. That hazard, and the hazard of muck (on shore and under water) getting your feet stuck, is exacerbated by the fact that struggling can make it harder to get unstuck. Worse yet, in some places bog muck can be deep enough for you to sink into mud so low that your head is no longer above water; that muck is like deep water but with such thick sediment that you can't easily move through or extract yourself from it. You can loose your other footing, and wiggling or trying to push free you can accidentally deepen and compact the hold the muck has on you. To escape the worst of that kind of situation, you'd need, as I once did, a rope to pull you out of it from above the surface while your legs remain relaxed. When I experienced that in muck on a surface near a bog (not even wading in water at the time!), I was rescued by a colleague and rope after calmly-then-not-calmly struggling to get myself out of the muck for a few minutes, and when being pulled out by rope I actually had to detach one of my hip-high waders and retrieve it after since it was stuck. Not all bog grounds are that bad, but they can be deceiving. Keep that kind of situation in mind as a possibility when you consider wading or even walking around in these areas.
All that aside, these are hauntingly beautiful places. I recommend canoeing again because it's simply a much more relaxing way to experience the serene environment. I do like bushwhacking and swamps make for great bushwhacking. When I do so I try to stay out of the water and take slow, careful steps, and try to be calmly prepared for the ground or tree I'm relying on to give out. That said, it can be a wonderful experience. I hope you enjoy, safely for you and the swamp creatures!