Archive for the ‘Study Nature’ Category
Streams ranked from best to worst: Where does your favorite fall?
On October 3, HRWC volunteers spread across Oakland, Livingston, Washtenaw, and Wayne Counties and looked for the aquatic insects and crustaceans that indicate the water and habitat quality of our river and creeks.
Using this and other environmental data collected by HRWC volunteers over the past 20 years, I have developed a ranking of the various streams in the Huron River Watershed. Streams listed at the top of this list have the best aquatic life and habitat in the Huron, and streams at the bottom of list are extremely impaired with little aquatic life and highly disturbed habitat.
Volunteer-collected data directly contributes to our knowledge of the conditions of the watershed and is a key component in directing management and restoration activities.
If you want more details on the ranking below, HRWC will present it and other data findings on January 12, 2016, 6 pm at our office (1100 N Main Street, Ann Arbor). All are welcome and no registration is required.
Ranking of Aquatic Life and Habitat (from best to worst)
1. Huron Creek (Dexter)
2. Woodruff/Mann Creeks (Brighton)
3. Honey Creek (Pinckney)
4. Huron River (Upstream of Proud Lake)
5. Woods Creek (Belleville)
6. Boyden Creek (west of Ann Arbor)
7. Pettibone Creek (Milford)
8. Fleming Creek (Ann Arbor)
9. Huron River (from Proud Lake downstream to Zeeb Road)
10. Portage Creek (Multiple townships to the northwest of Ann Arbor and north of Dexter)
11. Mill Creek (Dexter and Chelsea)
12. Hay Creek (east of Pinckney)
13. Arms Creek (Webster Township)
14. Huron River (Ann Arbor and downstream)
15. Davis Creek (South Lyon)
16. South Ore (Brighton)
17. Honey Creek (west of Ann Arbor)
18. Chilson Creek (west of Brighton)
19. Horseshoe Creek (Whitmore Lake)
20. Downriver Tributaries (Port Creek, Bancroft-Noles Drain near Flat Rock)
21. Traver Creek (Ann Arbor)
22. Malletts Creek (Ann Arbor)
23. Norton Creek (Wixom)
24. Swift Run (Ann Arbor)
25. Millers Creek (Ann Arbor)
Full River Roundup report is available for download.
HRWC recently hosted the first Michigan Aquatic Restoration Conference (MARC) with partners at the U.S. Fish and Wildlife Service, Forest Service, Michigan Departments of Environmental Quality and Natural Resources, as well as business sponsors Stantec, North State Environmental, Inter-Fluve, and Spicer Group. Located at the retreat setting of the Kettunen Center, the MARC brought together over 120 agency and academic scientists and engineers and industry professionals from all over Michigan as well as several other Great Lakes states. Much of the conference focused on geomorphology, or the study of the processes that shape a river channel and produce the habitat that exists in its present state.
The MARC was led off with a workshop on “Woody Debris Management” by one of the founding fathers of geomorphology, Dr. David Rosgen from Wildland Hydrology. He also provided a keynote presentation on lessons he has learned from more than two decades of stream restoration work. National restoration expert Will Harman from Stream Mechanics discussed a popular conceptual framework he developed — the “Functional Pyramid” — and discussed how restoration practitioners should seek to provide rivers and streams with “functional lift.”
Other presentations and discussions focused on the various and sundry nuances of stream restoration in practice throughout Michigan, the Great Lakes region, and parts south and west. There was a genuine excitement in the air throughout the conference as participants engaged in vibrant discussion about how to apply principles (some theoretical at this point) to stream restoration, in what is a relatively new applied science.
If you missed the conference this year, check out the MARC website for a sampling of the presentations and discussions, and keep your eye out for an announcement of the next iteration.
What is something that birds, bats, butterflies, and dragonflies all have in common?
Well, yes, they do fly. But something that doesn’t occur to the typical person not well-versed in these animal types is that all of these creatures migrate. Now that summer is done, the days are getting shorter, and the air is a bit cooler out there, we can expect to see these animals on the move soon.
This blog is the 4th part of a short series on migrating animals. The final topic: dragonflies!
Of all four topics I am covering in this series, scientists seem to understand dragonfly migration the least. This is likely because not much effort has been put into the subject: dragonflies are of not great economic importance, and the best known species that migrates, Common Green Darner, is widespread and abundant and so there is little concern about its future. In general, dragonflies are not very sensitive to water pollution, and can thrive in man-made or naturals wetlands. This is in contrast to some bat species and the Monarch butterfly, which are very specific in their over-wintering habitat selection.
Of the 326 species of dragonflies in North America, about 18 are regular migrants. Besides the Common Green Darner (Anax junius), other migrating dragonflies include the Wandering Glider (Pantala flavescens), Spot-winged glider (Pantala hymenaea), Black Saddlebags (Tramea lacerata) and Variegated Meadowhawk (Sympetrum corruptum).
The dragonfly life cycle
Dragonflies are fascinating creatures, with strange mating, flying, and territorial behaviors. This complexity applies to migration as well, which certainly contributes to the sense that scientists have yet to unravel dragonfly migration.
For example, work done by entomologist R. Trottier in 1971 revealed Common Green Darner could adopt two distinct life-cycles. One group of darners had the standard dragonfly life-cycle: nymphs emerged as adults in June, laid eggs in the summer, and died by late August. The eggs would hatch into nymphs that would overwinter locally in the bottom of streams and ponds and then emerge again the next June. (Side note: Dragonflies spend 1-3 years in the nymph stage, depending on the species).
The other group of the darners did not emerge until late-August, and rapidly disappeared from local ponds and wetlands as they began a migration south. Their children would be the ones to return in early April and continue the generational cycle. In this population, migration is a normal part of the life cycle. In other words, just like the Monarch butterflies, dragonfly migration is a one-way ticket for any given individual. The first generation will travel south, reproduce and die, and the children will head north. They will reproduce and die and their children will go south.
However, not all dragonflies migrate, even within the same species. This is a complication that is not well understood.
Timing and Destination
In 2006, researchers attached micro-radio transmitters to Green Darners and followed them along their migration for 12 days. On average, they traveled 30-40 miles in a 5-7 day period, eventually going an average of 400 miles. Another study recorded a maximum observed distance of 2200 miles.
Like the other animals we have studied, dragonflies rest for several days at a time while on the migration route, so the total migration time can last many weeks. From the Mid-West and Northeast United States, they are able to reach the Gulf Coast states and occasionally Mexico.
Cold nights seems to trigger dragonfly migration, just like with birds. Dragonflies will began their journey south in mid-August, and will continue through the end of October. The dragonflies use northerly winds that follow from cold fronts to speed them on their way, and can be seen traveling in swarms of hundreds of thousands, though they also travel as individuals and small groups.
Like birds and butterflies, it seems like they navigate using some type of internal magnetic compass and using topographic features like lakeshores and coastlines. Another interesting observation in the 2006 study is that dragonflies can alter their migration route considerably (in this case, by 120 degrees) in order to avoid flying over large bodies of water.
Check out this webpage: Migratory Dragonfly Partnership. This partnership is a collaborative effort between universities, dragonfly experts, the federal government, and nongovernmental programs with the goal of learning more about dragonfly migration.
The Partnership welcomes dragonfly observations from citizen scientists!
Thanks for reading!
It has been great fun for me to research these migrations and learn about new things (for me) that I had been wondering about for some time. I hope you enjoyed the series too!
-Paul Steen, HRWC Aquatic Ecologist.
Advanced volunteer Larry Sheer led our pilot Road Stream Crossing this year. This project is helping us in numerous ways: developing our Norton Creek Management Plan, expanding our data collection options, expanding our volunteer opportunities, and creating more leadership in our organization. Kudos to Larry!
See Larry’s article on the Road Stream Crossing program, published as part of his participation in MSUE’s Michigan Lake and Stream Leaders Institute.
Find insects, crayfish and other small river creatures as a part of the River Roundup!
Join a small team with your friends and family for a unique activity and (hopefully) some time in gorgeous spring weather! Collect a sample of the bugs and other creatures that live in our streams. Like canaries in a coal mine, these creatures indicate the health of our creeks and rivers. In healthy places, the amount of life in these fresh water systems is amazing!
All volunteers first meet in Ann Arbor, and then trained volunteer leaders take you to two stream sites, where you help them search through stones, leaves, and sediment. Only trained volunteers have to go in the water. Dress to be in the field for a couple hours. Please register.
Children are welcome to attend with an adult.
WHERE: Meet at the HRWC office in Ann Arbor. Then car pool to two streams in Livingston, Oakland, Wayne and/or Washtenaw Counties.
WHEN: Two times: October 3, 2015 from 9:00 AM to 3:30 PM, or 10:30 AM to 5 PM
DEADLINE: Registration closes on September 30, 2015.
NEXT STEPS: Fill out the registration page for the time and general area that you desire to work in.
MORE INFO: Please email Jason at firstname.lastname@example.org.
PHOTOS and STORY: Get a sense of what this event is like from a HRWC volunteer here.
What is something that birds, bats, butterflies, and dragonflies all have in common?
Well, yes, they do fly. But something that doesn’t occur to the typical person not well-versed in these animal types is that all of these creatures migrate. Now that summer is ending, days are getting shorter, and the air is just a bit cooler out there, we can expect to see these animals on the move soon.
This blog is part one of a short series on migrating animals. First topic: birds!
In southeast Michigan, August marks the beginning of the migration season and migrations continue throughout the fall. Summer residents leaving our area soon will be the Green Herons, Killdeer, Spotted Sandpipers, flycatchers, Chimney Swifts, and the Ruby-throated Hummingbird (along with many others).
Obviously not every bird species leaves for warmer weather. Mourning Doves, Black-Capped Chickadees, White-Breasted Nuthatches, and the Tufted Titmouse (along many others) are found in southeast Michigan year round. Great Blue Herons stay as long as there is open water.
For other species, Michigan is a warm winter destination, as long as they can find open water. Without open water, they keep on heading south. Several water fowl species like the Ring-necked Duck, Common Merganser, and the Common Goldeneye are found in Michigan during the fall, winter, and spring but migrate north in the summer. The Dark-Eyed Junco and American Tree Sparrow also fit in this category.
And finally, other species only use Michigan as a stop along their migration path. Warblers in particular are known for this; examples include the Cape May Warbler, the Magnolia Warbler, the Canada Warbler, and the Palm Warbler.
For tips on identifying birds, where to look for birds in the watershed, how to make bird migration easier and some great local resources, see Bird Migration, Finding feathered friends in the watershed, Huron River Report, Spring 2014.
Enjoy the most recent video produced by the Huron River Watershed Council that displays the benefits of a unique partnership!
“Osprey Return to the Huron” details the Huron River Watershed Council’s efforts to increase osprey populations in Southeast Michigan by installing two nesting platforms along the Huron River. The video features the Osprey history in Michigan, how diverse groups came together to support this project, footage from the actual construction, and a successful Osprey family on the river.
Early in the 20th century, osprey – a fish-eating bird of prey – lived throughout Michigan. The osprey population was depleted during the mid-20th Century due to overuse of harmful pesticides. Over the last 30 years, organizations have worked to re-establish the osprey population in Michigan. The number has risen from 81 pairs in 1975 to 166 by 1988, and has been on the rise ever since.
The Huron River Watershed Council worked in concert with ITC Holdings Corp, the nation’s largest independent electricity transmission company, Osprey Watch, the Audubon Society, and the City of Ann Arbor Parks & Recreation Department.
Thanks to Jennifer Poteat, Mike Staebler, and Jon and Kathy Bowdler for their support.
Hungry for more? You’re in luck! HRWC has produced three other RiverUp! videos featuring stunning aerial and underwater footage of the river, transformation of Dexter’s waterfront, and fly fishing with local expert Schultz Outfitters in Ypsilanti. You can view them all on HRWC’s Youtube Channel here.
The Michigan Conservation Stewards program has been brought back to Washtenaw County by a collaboration of HRWC and peer organizations. We hope you, as a supporter of the Huron, will take the opportunity to strengthen your knowledge and thus ability to advocate for our natural resources. This 6-week course covers all the basics of conservation, introduces participants to a wide-array of topic experts, and is a great networking opportunity.
In News to Us this edition, HRWC receives a grant to teach students about the river and a new app allows citizen scientist to record invasive species locations. Also, Great Lakes Echo produces a podcast reviewing the month in Great Lakes environmental news. Finally, the oil and gas industry makes headlines again in our area.
Grant Will Help Huron River Watershed Council Take Classroom Learning Outdoors HRWC’s Volunteer and Stewardship Coordinator, Jason Frenzel contributes to a piece highlighting a recent grant we received to work with K-12 students throughout the watershed to get them out in the rivers, learning how to sample and building an understanding of the condition of our creeks and streams.
To catch a predator: Citizens enlisted to track invasive species Here at HRWC we are proud of our citizen scientists. They do much to help support our mission and protect the natural resources of our area. Now there is another way you can contribute right through your smartphone. MISIN, or the Midwest Invasive Species Information Network, has developed an app that lets you report locations of non-native species. With a lot of eyes on the ground (and in the water), MISIN can gain insights into the spread of invasives and how to stop them.
Great Lakes in review: mayors on algae, restoration update This great podcast series recently came to our attention. Great Lakes Echo is producing monthly podcasts summarizing the month in environmental stories from around the Great Lakes. If you want to stay up to date on regional environmental issues, tune into this series. The most recent podcast covers September including the Summit on Water Resources lead by the region’s mayors and spurred on by the Toledo drinking water ban, and updates to the Great Lakes Restoration Initiative which now require projects incorporate climate change adaptation.
We continue to see a lot of news on oil and gas issues both within the Huron River watershed and the broader Great Lakes region. Here are two recent articles on a proposed pipeline that would be built through Washtenaw and Livingston Counties and how local communities are responding.
While doing a habitat assessment on the Huron River, I was lucky enough to see a pocketbook mussel in the process of attracting a fish host and managed to get some pictures and a video of it.
Please excuse the poor video quality- it looks like a bubble got trapped on our underwater camera lens! But you can make it out. The mussel is buried in the sediment, positioned so that its opening is facing up. The mussel is extending a part of its mantle into the current to use it in its reproduction process.
Mussels reproduce by releasing their glochidia (microscopic larvae) in the presence of fish. The glochidia latch onto the fish’s gills and fins where they dwell for days or weeks, depending on the species and water conditions. During this time the glochidia develop into microscopic juveniles and eventually drop off the fish. If they land in a suitable place, they can create a new mussel bed.
Therefore, since fish are integral to a mussel’s life cycle, the mussels have developed ways to get a fish’s attention. By extending the colorful mantel into the current, the mussel acts like an angler’s fish lure! When a fish gets closer- the mussel shoots out the glochidia!
Special acknowledgments go to Ryan and Marty of ECT, for experiencing this really cool find with me.