Tag: nelson

Growing Zones Warm Up

  • The National Arbor Day Foundation's revised hardiness zone map. (Photo courtesy of the National Arbor Day Foundation)

If you’ve been thinking about landscaping your yard, you should know things have
changed. The climate is warming so quickly that one organization has changed the
plant hardiness zone map. That’s the little map you sometimes see on the back of
seed packets. Lester Graham reports… you might want to check out the new map
before you spend hundreds of dollars on a tree that might not live long in your
warmer zone:

Transcript

If you’ve been thinking about landscaping your yard, you should know things have
changed. The climate is warming so quickly that one organization has changed the
plant hardiness zone map. That’s the little map you sometimes see on the back of
seed packets. Lester Graham reports… you might want to check out the new map
before you spend hundreds of dollars on a tree that might not live long in your
warmer zone:


You know, I’ve talked to a lot of gardeners and homeowners who do their own
landscaping about this plant hardiness zone map change, and at first they’re
kind of astounded. The growing zones are changing? Because it’s getting warmer?


But then, they sort of pause and think for a moment… and usually say something like,
“That makes sense.”


The United States Department of Agriculture issues the plant hardiness zone map.
It’s basically a map of the annual average low temperatures that helps folks figure
out what they can plant and expect to survive. But the USDA hasn’t updated its map
since 1990.


The spokesman at the National Arbor Day Foundation, Woody Nelson – I kid you not,
the Arbor Day guy’s name is Woody – Woody says his organization issued a new
map because it really needed to be updated:


“You know, people were asking us to help out, you know, ‘This old USDA map just doesn’t
seem to work for us anymore. I don’t think it’s accurate. What can you do to help?’
So we took it upon ourselves to give tree-planters the most up-to-date information
that we could.”


So the National Arbor Day Foundation looked at the low temperature data gathered
by the National Oceanic and Atmospheric Administration since 1990, and the people
were right: things are warming up:


“And over that 15-year span that we used, much of the country had warmed a full
hardiness zone.”


And there’s a ten degree difference from one zone to the next. It shows a real on-
the-ground trend.


Richard Andres is with Tantre Farm. They grow organic produce for farmers’
markets like this one in Michigan. Andres didn’t know about the new Arbor Day
Hardiness Zone map, but it makes sense to him. He says he’s seeing more
extremes:


“You know, last winter was unusually warm. The winter before, unusually warm.
So, we really didn’t even get a decent freeze. We had a huge amount of bugs the
following spring. So we are noticing more extremes.”


But a farmer or gardener can adjust things for annual plants. Long term, you’re
probably wondering whether you can now plant that dogwood or whether you
should plant that spruce from up north.


(Sound of sprinkler)


Phil Walsh sells a lot of trees at Lodi Farms nursery. He knew about the new Arbor
Day Hardiness Zone map. But, he says there’s a lot more to think about than just
the annual average low temperature when you’re thinking about planting:


“Cold is not the only, or really the most, important factor when determining plant
hardiness. Questions like soil: is it well-drained; is it not; is it wet; is it dry; is it acid
or is it alkaline; do you have wind; do you have shade? Questions like this: is it high
in organic material or low in organic material? These tend to have more impact on
whether or not plants survive than strictly the zone rating.”


Walsh says the trees are pretty tough, and most of them can adapt:


“Yes, things have warmed up over the last 15 years and they may well continue or it may change and it may go down. Pick a good, hardy plant that’s well-suited for your soil
and typically one that’s native here, that’s gone through these temperature changes
in the past and I don’t expect anybody’s going to have any problems with them.”


That’s not to say that every kind of tree is taking this in stride. For example, black
spruce trees adapted to Canadian and upper New England cold might not be such a
good choice as far south as it’s been grown in the past.


Woody Nelson at the National Arbor Day Foundation says trees native to the North
are starting to be affected by the warming climate:


“There’s a whole lot of white pines that have been planted in Georgia, in the South
as a nice landscape tree over the years. And now those white pines are coming
under a little bit of stress. The native lodge pole pines, the native loblolly pines in the
deep South, again native species are something that we want to promote and stick
with.”


So, the basic rule is: if the plant hardiness zone map has shifted one growing zone
warmer in just 15 years, you’ll probably want to stick to trees native to your area, or
from just a little south of you just in case this warming trend sticks around for a while.


For the Environment Report, this is Lester Graham.

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Invasive Reeds Help Treat Wastewater

  • Phragmites, or "common reed," is being used to treat wastewater in Shelburne Falls, Massachusetts. (Photo by Adam Allington.)

Nature is often full of practical solutions to real-world problems. Take the case of sewage and wastewater treatment: for decades engineers have used mechanical means to process wastewater before disposing of the end product in landfills. It turns out that phragmites, a robust wetland reed, can do the job just as quickly and for a fraction of the cost. Adam Allington has more:

Transcript

Nature is often full of practical solutions to real-world problems. Take the case of sewage and wastewater treatment: for decades engineers have used mechanical means to process wastewater before disposing of the end product in landfills. It turns out that phragmites, a robust wetland reed, can do the job just as quickly and for a fraction of the cost. Adam Allington has more:


Brandee Nelson is wearing knee-high rubber boots. She’s wading out into a tiny patch of reeds gently swaying in the wind. They’re planted in a goopy substance that appears to be mud, but is actually…


“Sludge. We’re standing ankle deep in sludge. Sludge is the leftover solids from the conventional sewage treatment process. Things that are very organic in nature, but thin enough that you can’t really scoop it out with your hand. It’s not the consistency of yogurt, it’s more like a thin milkshake.”


That thin milkshake used to be the solid stuff that you flush down the drain. Brandee is an environmental engineer working for the village of Tivoli, New York. Today she is monitoring the growth of two recently planted reed beds. The reeds are an invasive wetland species called “phragmites,” or “common reed”. In most places these reeds are a problem because they crowd-out native plants, but here they’re doing a job.


“The whole reason to have the reed beds is really to get the largest volume reduction of your waste product. Because the sludge tends to have so much water in it, and phragmites sucks up an enormous amount of water. This bed, we’re standing in it now, this bed will be totally dry in one day.”


Even though Tivoli is relatively small at about 1000 residents, the village still produces 100,000 gallons of waste water every day. That waste water translates into a whole lot of sludge, which Tivoli then has to haul to landfills.


“We’ll probably be saving about $45,000 on hauling fees.”


Tom Cordier is deputy mayor for the village of Tivoli.


“At one point we had drying beds, and it took about a week for them to dry, and then we would come in with our backhoe and take out the dried material. But every time we got ready to do that, it would rain and we would have to start the whole process over again, and then in the wintertime it was always freezing, and finally we got to the point where we had to have it trucked away.”


Before they planted the reeds, Tivoli had to remove their liquid sludge once a month. When the reeds are fully grown, the village won’t need to haul anything away for over 10 years. But if reed bed technology is so efficient, why isn’t everyone using it?


The answer has a lot to do with the predictability of mechanics, versus the variables of biology.


“One of the issues with the reed beds is it’s a biological process. Engineers like to typically do things that are mechanical, things that fit into formulas.”


Dan Fleuriel is director of the wastewater treatment for the town of Shelburne Falls, Massachusetts. Shelburne Falls began experimenting with reed bed technology back in the early 1990’s. Unlike the short 3 foot reeds in Tivoli, the mature reeds in Shelburne Falls tower some 6 feet over us as we walk through them.


“We’ve been applying to these reed beds since 1993. It’s been very good for us because we’ve gone from a very time consuming process of de-watering sludge to something that we pretty much leave hands-off that we can rely on.”

Functionality and reliability: they’re fundamental to any civil engineering project. But Brandee Nelson notes that Tivoli’s reed beds also make sense from an environmental perspective.


“This waste product, 150,000 gallons of it, used to go to a landfill somewhere else and it wasn’t our problem any more. Now what we’re able to do is manage that waste product here on site in a relatively small footprint using a natural technology, a very low-energy technology, and in the end we’ll end up with a product that we can use for village landscaping projects.”


Tivoli’s reed beds are expected to reach full maturity by next summer. Success of the project is being followed closely by neighboring towns, who are also considering a switch to reed bed treatment plants.


For the Environment Report, I’m Adam Allington.

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Trees Under the Influence of Ozone and Co2

  • The circle of trees, as seen from the outside. The white pipe seen near the top delivers either normal air, one, or both of the experimental gasses to the trees. (Photo by Bob Kelleher)

In northern Wisconsin, they’re finding that gasses such as carbon dioxide and ozone will change the makeup of what survives in a future forest. An open air experiment called the Aspen FACE project has been testing trees in elevated levels of ozone and carbon dioxide for ten years. But they don’t know whether the forest can change as quickly as the climate does. The GLRC’s Bob Kelleher has more:

Transcript

In northern Wisconsin, they’re finding that gasses such as carbon dioxide and ozone will
change the makeup of what survives in a future forest. An open air experiment called the
Aspen FACE project has been testing trees in elevated levels of ozone and carbon dioxide
for ten years. But they don’t know whether the forest can change as quickly as the
climate does. The GLRC’s Bob Kelleher reports:


We’re standing inside a circle of trees: paper birch, aspen, and sugar maples, maybe 15
feet high. And they’re surrounded by a ring of large white pipes spraying the trees with
gasses – that’s the high pitched noise.


Among 12 different circles of trees, some get carbon dioxide, or ozone, or a
combination. These are the very gasses believed responsible for changing the climate –
they hold in the earth’s warmth, forcing surface temperatures higher.


Dave Karnosky, with Michigan Technological University, heads the Aspen FACE project,
near Rhinelander, Wisconsin. Karnosky’s trying to predict how these gasses will affect
the northern forest:


“Those species, with aspen and aspen mixed with birch and maple make up a huge
portion of our northern forests, and there was a lot of interest by industry as well as to
what’s going to happen in the future as these greenhouse gasses continue to build up in
the atmosphere.”


Even ten years ago, when this project started, it was clear that carbon dioxide and ozone
levels were on the increase.


Ozone is destructive. It’s bad for people and for plants. Carbon dioxide, on the other
hand, is what we exhale, and what green plants need to grow. Both gasses have been on
the increase, largely due to burning fossil fuels such as in coal-fired power plants and in
cars and trucks. Karnosky says he knew aspen were quite responsive to both CO2 and
ozone:


“We weren’t sure much about the interaction, but we were sure interested in what would
happen with that, because those two pollutants are both increasing at about the same rate
in the atmosphere.”


The Aspen FACE project has shown that most trees grow well when exposed to carbon
dioxide, and most do poorly in ozone. With the gasses combined, bad effects tend to
offset the good ones, but results vary greatly between the different kinds of trees, and
even within a single species of trees, like aspen.


Karnosky has found there’s a tremendous range of genetic variation even among the
relatively few trees they’ve tested. That variation makes clear predictions difficult:


“It’s very tough to make a single prediction for species or individuals within species,
there’s so much genetic variation. So that’s been one of the, I think, kind of the highlights
from what I see in terms of a bit of a surprise for us.”


That genetic variation could be the forest’s salvation. Karnosky thinks that if some
aspens, for example, die off from ozone, maybe others will do okay, and fill the forest
back in. Sugar maples, which seem more tolerant of ozone, could replace some aspen
and birch. Then, the mix of trees in the forest would change, but the forest would
survive.


But, there could be problems if the air changes the forest too quickly. Neil Nelson is a
plant physiologist with the US Forest Service. Nelson says the region’s paper and pulp
industries rely heavily on aspen trees. He’s uncertain how quickly the forest, and forest
industry, can respond if aspen begins to die off – and how long it might take for other
trees to grow in.


“One of my colleagues has said, you know, the key issue may be whether things change
too fast for our society and economy to adjust to, and I think that’s an open question.
There seems to be great plasticity, and we aren’t quite there in terms of predicting from a
forest management standpoint what these results mean.”


It takes time to grow trees, maybe too much time if the climate suddenly shifts. The
Aspen FACE project has already provided regulators preliminary data on ozone. It could
become the basis for future pollution law. But, even ten years into the Aspen Face
project, there’s still a lot more data to harvest among the aspen and hardwoods.


For The GLRC, I’m Bob Kelleher.

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Teachers Rap for Energy Conservation

  • Compact fluorescent light bulbs can save energy and money. (Photo courtesy of National Renewable Energy Laboratory)

They say that charity begins at home. So does energy conservation. At least, that’s the idea behind a new program designed to get children interested in saving energy, one light bulb at a time. The Great Lakes Radio Consortium’s Chris Lehman reports:

Transcript

They say that charity begins at home. So does energy conservation. At least,
that’s the idea behind a new program designed to get children interested in
saving energy, one light bulb at a time. The Great Lakes Radio Consortium’s
Chris Lehman reports:


All of German Valley Elementary School’s 100 students are gathered in the
gymnasium to learn about saving the world…


“You guys are the ones who are going to have to worry about this stuff down
the road as you become adults and go out into the world. We always want to
plan, don’t we fifth grade.”


“Yes.”


These kids are about to get a lesson in saving the planet. Although German
Valley Elementary is surrounded by farmland, the students are going to be
treated to a rap concert as part of that lesson. Their teachers are the rap stars,
trying to drive the message home…


(Sound of teacher rap skit)


The unusual school assembly is the kick-off event in a program called PEAK,
which stands for Preserving Energy for All Kids. It’s funded by a legal
settlement against one of the biggest power companies in Illinois: ComEd.
An audit found ComEd under funded its infrastructure. As part of a court
settlement, money was set aside to encourage energy conservation.


David Kolata is Executive Director of the Citizen’s Utility Board. The
consumer advocacy group is one of the agencies charged by the courts with
dispersing the 16 million dollar ComEd settlement.


“The mandate is simply to use that money to reduce our energy usage as
much as we can. We’ve taken the approach that there are multiple programs
out there that makes sense and we’re trying to see…basically pilot programs
to see what works and what doesn’t.”


So, German Valley Elementary is a testing ground. The school was
recommended by State Representative Jim Sacia. Sacia says educational
programs such as PEAK are crucial as younger generations face growing
questions about energy shortages in the future.


“I think it’s just so important that they learn at a young age the importance of
conserving energy and to consider alternative energy sources so that they can
make the world a far more energy-efficient place in years to come.”


The PEAK program includes more than school assemblies and teachers
mimicking rappers. The bulk of the lessons take place in the classroom…


(Sound of classroom presentation)


Teachers at schools participating in the PEAK program use teaching
materials generated by a California-based organization. One of the first
lessons is about the difference between standard light bulbs and compact
fluorescent light bulbs. Those bulbs use about one-third of the energy of a
standard incandescent light bulb, and can last up to ten years.


Students are given an assignment: to go home and count all of the light bulbs
in their house. Then they’ll figure out how much money their parents could
save by switching to compact fluorescents.


The PEAK program is in its beginning stages at German Valley Elementary,
but the message of energy conservation seemed to be hitting home with fifth
grader Brian Kraft:


“Because if we’re older and we don’t have any energy there will be nothing
to do and see.”


“How do you want to save energy yourself?”


“Turn lights off, play outside more than play inside.”


Playing outside means less TV watching and video game playing… and that
saves energy too.


Fifth grade science teacher Robert Nelson says the initial phase of the PEAK
program has generated positive feedback from children and their parents.


The school intends to sell compact fluorescent bulbs as a fundraiser later in
the school year.


For the GLRC, I’m Chris Lehman.

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Ten Threats: Coastal Development Pressures

  • Construction along the shorelines can put a strain on natural systems. (Photo by Carole Swinehart/Michigan Sea Grant Extension)

One of the more subtle but relentless threats to the Great Lakes is
coastal development. Condos, ever larger and nicer beach homes
and buildings and parking lots in the watershed all have an
impact on the Lakes. As the population grows and the suburban
lifestyle keeps spreading, the health of the lakes is compromised
in countless tiny ways. Reporter Peter Payette finds those tiny
ways all add up:

Transcript

We’re continuing our look at ‘Ten Threats to the Great Lakes.’
Lester Graham is our guide through the series. He says the
experts who were surveyed to determine the threats say rapid
development is among the problems affecting the lakes:


One of the more subtle but relentless threats to the Great Lakes is
coastal development. Condos, ever larger and nicer beach homes
and buildings and parking lots in the watershed all have an
impact on the Lakes. As the population grows and the suburban
lifestyle keeps spreading, the health of the lakes is compromised
in countless tiny ways. Reporter Peter Payette finds those tiny
ways all add up:


Greg Reisig is standing at the edge of a 20-acre construction site
just down the street from the shore Lake Michigan.


Below him is a man-made pond a few hundred feet long. It was a
dry summer around here, but the pond is full.


In fact, Reisig says the water level is always the same.


“And that indicates there’s a lot of ground water flowing
here…there’s a lot of water in this pond and you can see what
was a whole big wetland complex…there’s a lot of cedar and red
osier dogwood…all the wetland plants.”


There are no wetlands here now.


The site in northern Michigan was excavated for homes a few
years ago.


But now the Army Corps of Engineers says the wetlands that
were here need to be restored. A few acres likely will be
restored. But Reisig says almost the whole site was wetlands
once. He expects it will soon be a subdivision with not much
more than a drainage ditch connecting it to Lake Michigan.


“What will that do to the amount of flow of water going into the
bay? Because of hard road surfaces, hard driveways, roofs,
buildings and supposedly fertilized lawns. What will happen to
the water and how will that increase the flow to the bay?”


The developer’s attorney says this is nonsense. Matt Vermetten
says this land was heavily farmed and mined for clay.


“There are pockets of quote unquote wetland and those are there
because of excavation for clay. So is this a wetland complex of
the nature we speak of when we typically speak of such a thing? I
think not.”


Disputes like this are becoming more common around the Great
Lakes. John Nelson is the baykeeper with the Grand Traverse
Bay Watershed Center. The bay off Lake Michigan and attracts a
lot of people. But Nelson says development doesn’t have to be a
problem.


He says the problem is people don’t think about the ecology of
the lakes. For example, east of Traverse City, Michigan, resorts
dominate the coastline. Along the beach, thick stands of sedges
and rushes extend out a few hundred feet. But the sections of
dark green marsh alternate with stretches of clean sand and white
lawn chairs.


(birds calling on beach)


Nelson grew up here and says this part of the lake was never a
sugar sand beach.


“They’ve located in a coastal marsh. Instead of celebrating and
dealing with that they’ve chosen to see it as they would like to
have it and then change it.”


The impacts of the changes are cumulative. Fish and wildlife
habitat is fragmented. The natural filtering properties of the
wetlands are gone.


So every time the city gets a rain shower all the dust and grime
and pollution are washed right into the lake.


Census data show people are leaving many of the Great Lakes
coastal cities and spreading out along the coastline. But it’s not
clear how local governments should plan for the growth.


Mike Klepinger studies land use planning for the Michigan Sea
Grant program. He says it’s hard to make direct connections
between a healthy lake and particular land uses.


“We are getting more planning along the shoreline than we had
thirty years ago in the state. The number of counties and number
of townships that have a plan has gone up, for example. But we
don’t know whether those plans are really doing any good.”


And it’s hard to implement good planning on a broad basis. In
any area, dozens of different local governments might have
independent control over development.


Multiply that by the number cities, townships and counties along
the coasts of the Great Lakes… and it’s hard to see how it all can
be managed so that enough coastline habitat is preserved.


For the GLRC, I’m Peter Payette.

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