Raleigh Nature

December 27, 2009

The Most Dangerous Species Grudgingly Groks Predators

Filed under: About & reflection, Exotica, Greenways & Parks, Nature Lore, green initiatives — Tags: , , — raleighnaturalist @ 9:40 pm

The wolf and bear are perfect bookends for a volume-sized summary of Ken Burns’ enormous film series about the national parks.  We came to this country and decimated the vibrant diverse native human population, mostly through disease, and then scoured the country for dangerous animals, paying bounties to cleanse the land of wicked ferocious predators.

When it came to the emerging national parks, it was no different.  Only until Alaska provided a landscape  huge and truly untamable did wildlife inside the parks begin to hold equal sway with the natural landscapes.  Many park officials recognized the vital role of wildlife all along, but wolves and bears were removed nonetheless.  Now we are slowly coming around to a national policy that recognizes the irreplacable contribution large predators make to an ecosystem.

The wolf –  free, wild and dangerous – is portrayed as the symbolic epitome of our estrangment with nature in the final segment of Ken Burn’s film on the national parks.  Wallace Stegner’s ideas frame the parks as a survival necessity – not just  for “the trumpeter swan and bison… but us.”  Stegner knew we needed “sanctuary from a world paved over with concrete by the raw engineering power of the 20th century.”  The ultimate sanctuary, in park terms, was Alaska, where park superintendent Adolf Murie championed the wolf as the crowning jewel of “a glimpse of the primeval.”  From Alaska came the research and experiences that brought about re-introduction of large predators into the continental U.S. parks.

 Murie wrote a pro-coyote report concerning Yellowstone that almost got him fired – and did get him packed off to Alaska, where he helped establish the greatest U.S. nature preserves of all. In 1867 “Seward’s Folly” was derided as too remote to be valuable.   111 years later, Morris Udall and Jimmy Carter culminated Alaska preservation by signing off on 17 national monuments comprising 56 million acres (in Alaska communities, all hell broke loose about the feds stealing the state). The Alaska Coalition that facilitated the legislation represented the largest grassroots conservation effort in history.

Denali National Park in Alaska

The final segment of National Parks: America’s Best Idea folded an eclectic concoction of historical and policy facts around Alaska and our large mammals.  The crucial theme of preservation balanced against use is applied to various projects as well as the pure numbers.  By 1950, National Park visitors reached 32 million in number: by just the mid-50’s that number hit 62 million – 98% by car. These numbers would have crushed any system, eventually even Alaska, but for the strong atmosphere and policies created by National Park Service professionals, developing park policies based on scientific research from the emerging academic discipline of ecology. Aside from limiting roads and managing tourist hordes, one of the toughest policies to implement was the simple directive:  Don’t feed the bears!  Though wolves were extirpated from Yellowstone, the “cute” black bears were fed and habituated to tourists for years.  We can minimize our contact and effect, but we can’t really avoid interactions with wildlife, and interactions with dangerous predators require intense management.  The thorny problems inferent in the situation are not least of why Dayton Duncan emphasizes that “each generation must re-protect these lands.”

Burns and Duncan are stalwart in offering breathtaking proof of the value of such work.  They also did yeoman’s work in coverage of the National Park Service’s vast mission, which now includes hundreds of National Monuments and National Historic Sites.  This final segment also continued the thread of appealing human interest stories, from fish guiding Biscayne Bay to home movies of Echo Park.  But I was ready for the end, which came beautifully with the 1995 release of wolves into Yellowstone.  The elk are all the better off for it, and the creekside willows they eat are again thriving.  We can get it right sometimes in this great country, and the national parks are a great example.

All Raleigh Nature posts on the Ken Burns film

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Wildlife in Raleigh is regaining some small aspects of full-fledged wilderness with top-of-the-chain predators.  “Black bears are here to stay,”.  a NandO story just proclaimed.  “Coyote Pyrotechnics at RDU airport” was the title of the WRAL story relating that 2 regional jets carrying about 50 passengers each struck coyotes in a recent week.  Raleigh Eco News has thoroughly documented the establishment of coyotes in the Triangle, including some good professional advice.  Can we co-exist with coyotes? Probably so, because they are quite discreet. Can we, through the 21st century, co-exist with wolves, mountain lions, and bears of all kinds?  It remains to be seen.

coyote

The Daily Coyote 

is an amazing record of human co-existence with a very personable “domesticated” coyote.  Very thought-provoking!

December 8, 2009

Lassiter Mill Shows Crabtree at Strength

 

 The previous post talked about Crabtree Creek’s tendency to flood – last week again brought heavy rains over the Crabtree watershed that brought the creek up to the edge of  its large channels.  This also sends an impressive load of water over Lassiter Mill Dam, as seen above.  I shot a video clip of the rushing water from below the tailrace, as linked below.

video- Lassiter Mill dam at high water

What happens at Lassiter Mill vividily and intensely demonstrates what happens lots of places more gradually – the deposition of new soil by spreading flood waters.  This is an essential part of the natural systems of the Piedmont, and our flood control measures prevent the process from periodically enriching the soil with a layer of mud and silt – though the process continues to work just fine in the “waste” lowlands that remain in Raleigh.  An astounding number of these lowlands have become major thoroughfares – roads built relatively later in Raleigh’s long history, on land left undeveloped due to the floodplain.  The Beltline follows the low contours of Walnut Creek, House Creek, Crabtree Creek, Big Branch, Marsh Creek and then Walnut Creek quite precisely as it curves from Cary’s Buck Jones to Glenwood, over the crest of North Hills, and around southeast to Poole Rd and then Lake Wheeler Road.  The water is piped and rushed away from underneath these elevated roadways, carrying its minerals with it.

The suburbs and businesses near these roads certainly don’t need the sediments!  But the stuff has to go somewhere, and these days there is a lot of stuff.  When streams are buffered by a healthy band of water-loving trees and shrubs, erosion material is reduced greatly. In central Raleigh, Crabtree is clogged with lots of dislodged soil, construction materials and unnaturally exposed red clay.   But the deposition process is a vital one, and it gets exaggerated at Lassiter Mill, where the water brings its load of suspended minerals hurtling over the dam and then slows and spreads its course below.  As it slows, it drops much of its sediment load.  The area below Lassiter Mill changes yearly as the creek alternately erodes and builds up materials.  Check out the new load of sand deposited by the recent high waters.

There are several caveats and complications to consider.  This is a large load of sand!  Eight or nine inches at a dose, and not the silt and mud that the plants would prefer. But nature adapts, and the Lassiter “beach” is fun to browse, with a wide variety of weeds incubated from the loads of  soil and debris.  The silt and sand that currently washes down Crabtree is terribly unhealthy for the filtering mussels and other delicate aquatic life.  The red clay that paints Crabtree brown is such a strong pigment that Crabtree often changes the color of the Neuse where it conjoins.

Crabtree builds itself “shoulders”  as it repeatedly overflows, dropping the heaviest particles first as the water disperse into the floodplain.  This is why Crabtree presents such a tall ditched appearance as above at Hodge Road.  The plants arrange themselves in an orderly sequence beside or on top of these embankments according to their tolerance for flooding.

The next time Crabtree rises over it’s banks, put on your rubber boots and check out the glistening mica-rich silt that covers the greenways before the city sends its scrapers to clear it off to the side, where it enriches the plants as well as any landscaper’s mulch.  You are walking in the stuff that makes our floodplain soils, a rich muck delivered by the yearly floods.

Nature.org floodplain info

BBC floodplain story

 

October 4, 2009

Walnut Creek Wetland Center opening

Walnut Creek Wetland Center_1_1

Numerous city and parks officials joined a large crowd of citizens for the ribbon-cutting ceremony celebrating the opening of  The Walnut Creek Wetland Center.

Mr West and Dr. Camp listen to Mayor Meeker

Mr West and Dr. Camp listen to Mayor Meeker

 Dr. Norman Camp listened to Mayor Charles Meeker, city councilman James West and park officials speak about the new center.  Then the founder of Partners for Environmental Justice , and the man who sheperded this project into being, got up and spoke of the center as a shining new gem in Raleigh’s crown,” as quoted on Raleigh Eco News.

Walnut Creek crowd_1_1

The crowd listened attentively as the benefits for Southeast Raleigh as well as the ecosystem were described and the many supporters and participants were thanked.  Then they were rewarded with a magnificent poem written for the occasion, by Christopher Rowland, a Southeast Raleigh native who wows the crowds at Artspace’s Stammer under the name Langston Fuze.

Chris Rollins reads_1_1

Click here for a 1 minute video clip of the poem 

for the full text of the poem, see the post at

Raleigh Eco News

wetland musicians_1_1

Musicians entertained on the “longest back porch in the Southeast,” and Erin Sterling, architect of record for the project from Frank Harmon Architecture, explained the details of the green design.  The building is 230 feet long and narrow so that all rooms get light from two sides and often three.  It is sloped up to the north and shelters its southern exposure with the long low porch roof.  Raleigh’s final budget did not allow for the planned rainwater cisterns, but they can come later and the gutters now direct into bioretention areas – long rain gardens that surround the space.  The building is on stilts and allows natural water flow under it – important in this floodplain.  Recycled lumber and building materials were used when possible, and native plantings surround the site.

Walnut Creek Wetland center flower bed

Walnut Creek Wetland center flower bed

On the other hand, several of us gazed from the wonderful porch at a huge stand of Microstegia (bamboo or stilt grass) just at the edge of the construction clearing and bemoaned a bit the vast future work entailed in continued future protection of this site and may others in Raleigh.  The educational center will raise awareness of those issues, and provide a much needed amenity and attraction in this part of Raleigh.

Thanks for all your work, Dr. Camp!

Thanks for all your work, Dr. Camp!

 

The longest porch in the Southeast

The longest porch in the Southeast

Walnut Creek  sign_1_1

April 10, 2009

Marsh Creek Meanders

Filed under: Nature Lore, Northeast Raleigh, waterways — Tags: , , — raleighnaturalist @ 3:33 pm

   I had the most nature fun OFF the greenway in a long time, searching the headwaters of Marsh Creek.  This prototypical Piedmont creek – running due Southeast and carrying red clay hills down to sandy flats – ends up dumping its large steady flow of water into a huge wetland at the Yonkers Road section of the Beltline – thus its name.  This lower section is full of treats, and will constitute part two of this post.  Recently I browsed through North Raleigh sewer cuts and subdivisions, climbing up Marsh Creek as I did.  My destination – the headwaters – came as a surprise, and emphasized the fascinating cross section of Northeast Raleigh this creek travels through on its way to Crabtree.

upper-marsh-creek-on-google-map

upper reaches of Marsh Creek on Google Maps

   Marsh Creek actually starts just above the blue line showing the creek on this map - at Sutton Square of Falls of the Neuse, its twin springs cradling one of the busiest - and for pedestrians, one of the most dangerous – stretches of four lane in Raleigh. This major creek, which runs for just over five miles from Spring Forest to its intersection with Crabtree, begins on the west side of Falls of the Neuse as a tiny landscaped pond (next to Northbend), and on the east side as the  rocky ditch seen below.

The little brook picks up size quickly as it travels downhill through Northeast Raleigh neighborhoods – alternating older large-lot subdivisions with newer townhouse projects.  It reaches a large natural area just above Old Wake Forest Road, and that’s where I had such fun.  A wide sewer cut gave access to a scrubby but rich haven tucked between neighborhoods, and I was able to see the deer tracks seen at the top of the post, a deer bedroom of crushed broomstraw, cute little coon prints on a sandbank, and a glimpse of a solemn woodchuck, who quickly scrambled into his hole.

Above, a mossy bank just north of Old Wake Forest Road.  Below is the sewer cut, which travels through several acres of undeveloped lowland.

After crossing Atlantic Avenue, where I found another hillside natural area covered with large, iron-rich boulders, the creek parallels that thoroughfare southward for a couple of miles – once again, touching on large older homes and much denser new developments. Before crossing New Hope Church Road it accepts the run-off from Mini-City to the east, and then enters Brentwood.  Here, the creek is the centerpiece of a long, narrow neighborhood park that runs down the center of the venerable and “transitioning” Brentwood subdivision.  It accepts the water from a neighborhood pond on Huntleigh (doubtless called a lake by the residents), and dives under Capital Boulevard, where we will pick it up the next time we visit Marsh Creek.

upper stretch of Marsh Creek

upper stretch of Marsh Creek

Photo album of upper Marsh Creek

 

March 19, 2009

Look down, look closely, at Spring’s lovely weeds

Filed under: Central Raleigh, Gems & Surprises, Nature Lore — Tags: — raleighnaturalist @ 2:17 am

 wildflowers-and-dandelion

   Weeds are just plants someone thinks are out of place.  As the season arrives, we can all get some pleasure from these signs of a diverse ecosystem  in your yard.  Take the time to look down and closely!

snowflakes, an early bulbous wildflower

snowdrops, an early bulbous wildflower

 

snowflake-patch_1_1

 

blue-wildflowers_1_1

February 22, 2009

News, Notes, and Promises

Walnut Creek greenway at Wetland Center

Walnut Creek greenway at Wetland Center

 Walnut Creek Wetland Park is approximately 59 acres in size and is located between Garner Road and South State Street and south of Peterson Street in Southeast Raleigh. This site contains extensive wetlands that are located near the downtown urban center and offer an opportunity for the public to easily explore and learn about the value and significance of wetlands for water quality and wildlife habitat.     Raleigh City website

      Construction has begun on  the  Walnut Creek Wetland Center, as reported in NandO on February 11.   The center is the culmination of efforts led by Norman Camp to rehabilitate and protect the wetlands of Raleigh’s Southeast.   This topo map shows the area. The new building, shown below, was designed by Frank Harmon, and will stand six feet above the ground and have a minimal ecological footprint.  An earlier post describes some amenities of this section of greenway.

                         walnut-center-side_1_1                         walnut-wetlands-center-front_1_1

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henbit-on-hodge-rd_1_1

    The groundhog definitely saw his shadow, but early signs of spring abound in Raleigh.  Above is henbit between Hodge Road and Crabtree.  Below are red maples blossoms in Oakwood.  There is some cold air coming, so there will be some casualties – though our well-mulched garden parsley and “spinach under glass” on the deck are doing great!

winter-maple-buds_1_1

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     One of the exciting things about Raleigh Nature is the wonderful reader input, and I need to follow up and post about more of it.  There’s always a tension between getting around to it and doing it justice.  Here are a few smoldering issues on my draft posts:

First and most behind: responding to the multiple inputs about Lassiter Mill and Raleigh mill history.  From David’s great pics of the upper water, to the amazing Lassiter mill drive wheel images sent by Jimmy, and the history and memories in the comments, we need to return to this subject soon!  I recently got a fascinating inquiry from Carol about the infilled Lake Boone, and the natural springs that fed it, and I want badly to follow that up.  I very much appreciated the mistletoe tips from Meredith, and dream of my “pecans and mistletoe” map of Raleigh!  Scott, a well-known author, my old friend Joe, and Tommy, a songwriter from my past, all greatly helped my still-unfinished exploration of the Pigeon House Branch system and the expensive new Fletcher Water Park that feeds into it.  We’ve been blessed with an explanation of Raleigh Swamp’s waters by Mark, who engineered it, and we’ve been sobered by the plea for resolution from Deborah concerning Ward Transformer’s lifetime of ecological crimes against our area.    I look forward to sharing Patti’s wonderful hawk story, and keeping Michiel in the Netherlands all caught up on Raleigh’s natural scene.  Mentioning these highlights, many thanks to all who have written or commented.  It really helps the work!

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Oakwood maple

Oakwood maple

     Chris Crew and Matthew Brown just wrote a wonderful article about Oakwood wildlife for our neighborhood newsletter.They are neighbors at the bottom of the slope at whose crest I reside. Between my house and theirs almost every inch is controlled by humans, and the water flowing downhill is piped or culverted.  Below their house, toward Brookside and Glascock, the land opens up just a bit and has some natural edges. As a matter of fact, Chris is uncovering  the section of Grassy Branch in his backyard, and that’s another topic on my to-do list.  Just across the road, though, is Oakwood Cemetery, a significant oasis for many living things.  According to their article, our neighborhood boasts a huge variety of species. Among many bird species they describe, the cedar waxwing invasion for berries and the long-standing nest of red-tail hawks stood out.  Foxes, possums, and a substantial population of raccoons are described.  There are excellent nature lore tips regarding the colors of 5-lined skinks and owl sounds.  I wish the newsletter were online, but if you have a friend that’s a resident, check it out.  Way to go, Matthew and Chris!

PS:  Hope ya’ll like the revised sidebar.

PPS: Matthew very kindly posted the article referred to above HERE.

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