Pacific Coast Iris: low maintenance wildflowers

Written October 12, 2012, published November 2012

A showy group of irises are native to the West Coast from southern California to southwestern Washington. Called the Pacific Coast Iris (PCI), these species grow very well in our area. There are thirteen to fourteen species and hundreds of hybrids. PCI grow in well-drained soils with some compost and mulch, and prefer part sun to full sun along the coast. Otherwise they need little summer care. They flower from March to June, with peak bloom in May-June. In my garden, they peak just as the lilies start, so I have a continual blooming sequence from March to September, first of iris, then of lilies. The genus Iris is large, with more than one thousand species and many sections. The most well known Iris section is tall bearded (TBI), which are big plants with large rhizomes, very tough, and which grow well in humid wet conditions. The term “bearded” refers to tufts of hairs on the “falls,” the three large petals that hang down in each flower. The upright petals are called standards. There are more than a dozen sections of Iris in the non-bearded group, and PCI are one of those sections. 

PCI Rodeo Gulch, a registered orange with purple signal, from BayView Nursery, Santa Cruz, CA. Photo by Kathleen Sayce

The big yellow TBI that grows along the Columbia River is Iris pseudacorus, yellow flag, from Europe. Yellow flag is listed as a noxious weed in several states, and thrives in wetlands. 

PCI flowers are slightly smaller than TBI flowers; PCI plants are shorter with long, narrow evergreen leaves instead of wide leaves. One species is deciduous, Iris tenax, which lives in southwestern Washington and western Oregon. Plants range in height from less than ten inches to around thirty inches tall. 

PCI Cape Sebastian, an unregistered selection with white flowers and a very showy purple and gold signal. Photo by Kathleen Sayce 

PCI flower color range is wide, from white thru pink, rose, red, orange, yellow, lavenders, blues and purples, browns, to nearly black, which is seen in some very dark red and dark purple flowers. There are hybrids with showy signals (spots on the falls or lower petals), veining, halos, and ruffling. There are wide petal forms and narrow petal forms, bicolor and bi-tone forms. 

PCI Mission Santa Cruz, a lovely rich red-purple flower on a sturdy plant.  Photo by Kathleen Sayce 

Unlike bearded iris, PCI are not wetland plants and do not need much summer water. PCI tolerate wet winters and dry summers; in other words, our normal rainfall patterns are fine for them. They like mildly acidic soils, which is our normal soil condition. A little compost and mulch helps them in sand or clay soils, a little fertilizer promotes flowering. PCI also do well in meadows, where they thrive with an annual fall mowing, which is essential in our climate to keep woody shrubs and trees from growing into grasslands. Native bees, ants and hummingbirds visit PCI flowers, which provide both nectar and pollen. A few are mildly fragrant. 

I have not had deer, aphid, caterpillar, or disease problems in my garden, except when I first planted them. Deer tugged up, chewed on, and spit out all the PCI seedlings the night after they were planted. I found the seedlings the next day lying on the ground, somewhat battered from chewing. I put them back in the ground, and half of them lived. Since then, the deer leave them alone, except for an experimental mouthful every year or so by a fawn that is learning food plants for the first time.  

PCI Blue Plate Special, a registered blue from BayView Nursery, Santa Cruz, CA. Photo by Kathleen Sayce

I started growing PCI more than a decade ago, when I was first practicing dry gardening, and soon learned why PCI aren’t more widely grown: They can be successfully transplanted only for a few weeks in spring, and for a couple of months in fall. I move PCI in the fall, from late September to November, after waiting for wet weather to start, and typically water them only once, the day they are planted. Now I have six species and several dozen hybrids in my garden. Among irisarians, this is barely getting started; I know urban gardeners who grow more than 1,000 iris varieties on a city lot.  Every three or four years they should be divided; if I can’t get to my plants then, I give them more compost to tide them over. 

PCI Finger Painting, a registered blue and white form, from BayView Nursery, Santa Cruz, CA. Photo by Kathleen Sayce

Unlike bearded iris, PCI do not like to sit in hot containers in summer, with hot roots, or to lie on the ground for weeks waiting to be planted. They do not like soggy wet feet in summer, either, or hot humid weather; the latter keeps them from being grown in much of central to southeastern US. 

PCI Joy Creek Orchid, an unregistered selection from Joy Creek Nursery, Scappose, OR, with an orchid flower, and a multicolored signal on the falls. Photo by Kathleen Sayce

Out here on the Pacific Northwest Coast, PCI thrive in all but wetland soils, and in part sun to full sun, even in bright shade. My garden has silty sand with some compost mixed into the soil and mulch on top, and here they grow very well.  One species grows only along the immediate coast from southern Oregon to southern California, Douglas iris, Iris douglasiana. It thrives in salty, windy coastal soils, on sand and on seacliffs. Locally, Douglas iris grows in the Discovery Garden at Columbia-Pacific Heritage Museum, Ilwaco, Washington. These plants are typical: tall, with pale lavender to white flowers with a yellow signal, and usually flower in May-June. 

PCI Cape Ferrelo, a light blue form of Iris douglasiana, photo by Kathleen Sayce

With a huge range of PCI sizes, colors, and forms to chose from, there is a PCI for you, just waiting for a chance to grow in your yard. For more information, take a look at  HYPERLINK "http://www.pacificcoastiris.org" www.pacificcoastiris.org, the website for the Society for Pacific Coast Native Iris.  The society maintains the registry of hybrid PCI. Pages on each registered hybrid are posted in the American Iris Society’s Iris Encyclopedia, at  HYPERLINK "http://wiki.irises.org/bin/view" 
http://wiki.irises.org/bin/view in the PCN section. 

You can also find information about all the other sections of iris on the AIS website.  

Iris douglasiana, Douglas iris, Columbia Pacific Heritage Museum, Ilwaco, WA, a very pale lavender to white flower with a yellow signal on the falls. Photo by Kathleen Sayce.

Late Summer Red Tide: Myrionecta

Written September 17, 2012, published late September 2012

In late summer to early fall each year, water in the lower Columbia River, from Tongue Point to the entrance, turns purple to blood red. This so-called red tide is not toxic, and has been happening here for many decades. It’s caused by the rapid growth of a tiny ciliated protozoan (a single-celled animal with rows of tiny movable hairs, called cilia), Myrionecta rubra, which lives in brackish to salt water. It was formerly called Mesodinium rubrum. 

Aerial photo of Chinook Basin on Baker's Bay, during late summer when Myrionecta is blooming. Myrionecta patches are very dark; while waters with low levels of this protozoan are green. Photo by Kathleen Sayce

Myrionecta rubra looks like two balls stuck together, one slightly smaller than the other. It has two rows of cilia where the balls join, which move in rhythm like flexible, very fast beating galley oars. The whole animal is so small that in a water sample without magnification, all you can see is a red blur in the water. Under a light microscope, Myrionecta cells live only a few minutes before they overheat and die, rupturing the cell wall and spewing the intercellular contents out into the water. When healthy, they zip around as though jet propelled, bouncing off the edges of the slide, and rocketing from one side to another, fast, agile, tumbling, and changing directions with ease. 

Myrionecta cells look red because inside each cell, which is 50 µm long and 20 µm wide, are even tinier red algae, each one a few microns in diameter. Green plants have green plastids called chloroplasts, which were once free-living green photosynthetic bacteria. Myrionecta’s red plastids are red algae that have learned how to live inside cells; they can also live on their own as well. This relationship is often called a symbiosis, because the algae give the cells in which they live sugars for food, being photosynthetic, and gain a protective cell wall to live within. 

Myrionecta is around most of the year in brackish to salty water. In the years when I collected water samples to look at plankton species, I saw them in samples from the Columbia River, the Columbia plume offshore, in the ocean surf, in Willapa Bay, and also on rivers, including the Palix and Willapa Rivers. During August to October, they become very abundant. A few cells in the water don’t change the color, but billions of cells turn the water blood red. 

Sailboat ont the Columbia River near Desdemona Sands off Astoria, sailing through a dense red patch of Myrionecta. Aerial photo by Kathleen Sayce.

This color change is easily seen from the Astoria-Megler Bridge on Highway 101. The darkest colors can be seen as streaks and swirls, especially from the spans over the north and south channels, or from an airplane. The red color appears in August, first as a purplish tinge to otherwise blue waters, strengthens in September, and persists until fall storms begin, usually sometime in October. During this period, the number of Myrionecta cells in the water is easily in the millions of cells per cubic meter of water. The next time you are sitting in your car on the high span at the south end of the bridge in late summer or early fall in warm dry weather, watch the water and see if Myrionecta rubra is ‘blooming.’ 

Unlike many harmful algal blooms, this dramatic red bloom happens every summer and early fall with no bad side effects.  Myrionecta rubra doesn’t make biotoxins, does not make seafood poisonous, or cause illness or death in fish, birds or humans. It’s been going on for many decades. Not all blooms in local waters are so benign, but this particular one doesn’t seem to be a problem. 

Fossil mammoth teeth tell us about past climates and plant communities

Written August 7, 2012, published September 2012

There is a fossil Columbian mammoth tooth in the museum at the Pacific County Historical Society, South Bend, WA. The tooth was found in the 1930s, in floodplain sediments along the North River. Mammoth fossils from the Pleistocene Epoch are common throughout North America, and in Washington. During the Pleistocene, mammoths lived from Alaska and Canada to Nicaragua and Honduras. Two mammoth species wandered over from Asia into Alaska and Canada, and two species were indigenous to and widespread in North America, including the Columbian mammoth. 

Figure 3. Mounted composite skeleton of a Columbian-type mammoth made from skeletal elements recovered in the 1870s from the
‘swamps’ at the Copelin Ranch along Latah Creek in Spokane County (site 06). When assembled in 1886 in the Field Museum of Natural History in Chicago, Illinois, this ‘mammoth’ was considered to be the first fully mounted specimen, albeit a composite from several individuals, of a mammoth in North America. (Photo from Higley, 1886.)
From:
Washington Geology, vol. 27, no. 2/3/4, December 1999, page 25 “Some Notable Finds of Columbian Mammoths
from Washington State” Bax R. Barton

The Columbian mammoth, Mammuthus columbi, is the state fossil. Bax Barton wrote in Washington Geology (Vol. 27 (2/3/4), 1999, page 23) “Of the 39 counties in Washington, only heavily forested counties on the west side of the Cascade mountains (for example, Skamania and Wahkiakum) and less populated counties on the east side (for example, Ferry and Pend Oreille) have thus far failed to produce mammoth fossils.” The Columbian mammoth was up to 13 feet tall and just under 10 tons, eating around 500 pounds of vegetation per day. This mammoth had long tusks, and was not very hairy, unlike other mammoth species, and also unlike mastodons. 

Mammoth tooth on display at Pacific County Historical Society, South Bend, WA. It was collected from the floodplain of the North River in north Pacific County. Photo by Kathleen Sayce.

This single fossil tooth from the North River tells us what plant communities and climate were like during glacial maxima (when continental ice was most widespread) in the Pleistocene. Mammoths did not live in forests. They grazed on open grasslands, eating grasses and sedges, with sages, mosses, ferns and aquatic plants as minor foods. Grasses and sedges were extensive during glacial maxima because that climate was cooler and drier than today’s. These shifts promote a long-term seesaw between forests and grasslands. Forests shrink during glacial maxima, and expand during warm wet periods. Periods of cold dry weather promote grasslands and sedges. Warm wet periods promote forests, such as today’s climate. Today, the present climate promotes trees. 

Sea level also seesaws between ice ages and temperate periods. During glacial maxima, sea level was as much as 350 feet lower than today. The continental shelf was a wide rolling plain, dissected by rivers flowing from modern day estuaries in deep valleys, including Columbia, Willapa and Grays Harbor. These river valleys can still be seen on bathymetric charts as deep canyons, along with larger side channels; finer stream details are buried under marine sediments. 

Mammoths weren’t the only animals to flourish during the Pleistocene; freshwater river habitats for fish in those streams on the plains were extensive compared to present day. 

Mammoth teeth are common fossils for two reasons. One, teeth are hard, and generally persist with relative ease compared to other body parts. Two, over their lifetimes, each mammoth had six or more full sets of teeth. As grazers, they wore teeth down quickly, and replaced them in sets. Shark teeth are common marine fossils for the same reasons: teeth are hard, and sharks constantly grow new teeth to replace worn and damaged ones.  

As the climate warmed, forests expanded, grasslands shrank, and mammoths found their preferred food plants disappearing. Their teeth were designed for grasses and sedges, not conifer trees. The last mammoths died out around 10-11,000 years ago, based on dating the youngest known fossils from the Midwest. There are gold deposits buried on the continental shelf, and mammoth fossils are out there as well, along with a lot of shark teeth. 

Oceanic Gyres and Garbage Patches

Written June 27, 2012, published August 2012

The 2011 tsunami inadvertently provided ocean biologists with study material for pelagic drift for years to come. The word pelagic is from the Greek word for open sea, pélagos. Probably the best-known pelagic ecosystem in the world is the Sargasso Sea, in the Atlantic Ocean. This is a natural gyre, or eddy, where floating seaweed is common. It is a large oval around 700 statute miles wide and 2,000 statute miles long, and is near Bermuda on the west edge. The Sargasso Sea is bordered on all sides by currents. 

This sea is named for floating brown seaweed, in the genus Sargassum, which is common throughout the eddy area. While most Sargassum species are benthic and live associated with seabeds, Sargassums in the Sargasso Sea are holopelagic (free-floating throughout their lives). 

A local seaweed in this genus, Sargassum muticum, lives on shells, cobbles and wood on tidelands of Willapa Bay. Like other Sargassums, it has dense leafy brown fronds with numerous small air bladders, which help it to float up off the bottom and probably gives it more access to light. It is one of dozens of species that arrived with Pacific oyster spat in the early to mid 20^th Century from Japan, and now lives in many estuaries around the world. 

A recent expedition to the Sargassum Sea confirmed that numerous endemic species, which live nowhere else on earth, are found among this floating seaweed forest.  This floating reef structure is used by many species; likewise, the cover provided by Sargassum is attractive to many fish species in the otherwise open ocean.

Being a gyre, the Sargasso Sea is a watery trap for debris. This golden brown seaweed community is slowly being filled with plastics from the surrounding currents and shores of the Atlantic Ocean. The Sargasso Sea is becoming the Great Atlantic Garbage Patch. 

In the Pacific, there is no Sargasso Sea West, but there is a marine debris and plastics gyre in a similar location, in the North Pacific Gyre. It is called the Great Pacific Garbage Patch. The densest part of this gyre is between 135°W to 155°W and 35°N to 42°N, a long oval area that is 480 by 1400 statute miles wide. The exact size is difficult to measure, because the plastics in it gather in a floating belt in the water, not a raft lifted up out of the water. It is north of the Hawaiian archipelago, and stretches east and west for hundreds of miles. There are also several other gyres in the world’s oceans, in the south Pacific, Indian and south Atlantic Oceans. All of these are places where plastics accumulate. 

Locally, we know there is a plastics debris problem on our beaches, but compared to some Hawaiian beaches, our beaches approach pristine condition. Some beaches on the north side of the Hawaiian Islands accumulate huge amounts of plastic each year in drifts 5 to 8 feet thick, more than 20 feet wide, and miles long. 

When the energetics of plastic recycling are worked out, these floating garbage patches and plastics-rich beaches may become resource extraction areas, where harvesters gather plastics to make diesel fuel. The process is simple; it’s the energy to heat the plastics that makes this expensive as a process right now. 

Tsunami Debris and Pelagic Species

Written June 27, 2012, published July 2014

As massive amounts of floating debris begins to wash ashore from the tragic earthquake and tsunami in Japan, March, 2011, the possibility that species local to Japanese waters could be transported to our coast in debris went abruptly from speculation to reality when a floating dock and boats arrived on beaches from BC to Oregon. With it is an opportunity to track estuarine and pelagic drift species, to determine biologically how long a floating object has been in the water.

Growing on the dock were dozens of species native to Japan, including a few that might be considered invasive. Species found and removed from the dock’s surfaces included: brown, green and red seaweeds; gooseneck and encrusting barnacles; snails; crabs; clams; several worms; bryozoans; and starfish.  Likewise the small boat that washed up on our beach was well colonized with a number species. These were in Japanese waters before the earthquake. 

A brown plastic beverage bottle and a small float both were colonized by pelagic gooseneck barnacles, Lepis anatifer, a widespread oceanic barnacle. Photo by Kathleen Sayce

Land-based floating debris carries a different set of organisms; these are typically from oceanic waters. Open water species are called pelagic, from the Greek word for open sea. A very common animal on marine debris that arrives on our beach is Lepis anatifera, the Pelagic Gooseneck Barnacle. These barnacles are often seen in the company of bryozoans and filamentous diatoms on floating objects; these species are widespread, and are found on drifting objects all over the world. 

Gooseneck barnacles are so named because they have long pedicles, or necks, which attach to subtidal rocks, and to driftwood, floats, water bottles, docks, boat hulls and soccer balls. All barnacles are hermaphrodites with internal fertilization. Eggs are held inside the shell of the adult barnacle until the larvae hatch. As drift moves across the ocean, barnacle larvae swim with it, and like many marine invertebrates, the young animals settle near or on adults of the same species. Thus multiple generations of pelagic gooseneck barnacles live on drift that has been in the water for a year or more, and only one generation of barnacles lives on drift that recently entered marine waters. 

On a recent cleanup ride with Russ Lewis, a beachcomber and volunteer with Grassroots Garbage Gang, we picked up plastic debris from Oysterville Road into Leadbetter State Park. In three hours we gathered bags of debris from the 2011 tsunami:  Numerous foam pieces, white, orange-yellow and light blue to light green, some with black roofing on it; several water bottles with Japanese logos; and fishing floats, small to large. 

This closeup of a clump of gooseneck barnacles shows that several generations of barnacles have lived on this float, indicating that it has been in the water for many months. Photo by Kathleen Sayce

One fishing float had oysters more than two inches long, encrusting barnacles, filamentous diatoms and gooseneck barnacles; this float was probably in the water before the tsunami.  The largest gooseneck barnacles we found were more than four inches long, with shells one and a half inches long. Attached to these adults were tiny gooseneck barnacles less than one half inch long. 

We did not see the numerous coastal species associated with the floating dock. Most of the debris we found was probably colonized by pelagic species after it was dragged offshore.  

Normally the biggest beach cleanup of the year is the 5^th of July cleanup, when more than fifteen tons of fireworks and party debris is removed. This year and for several years to come, no one knows how much extra debris will be removed from local beaches due to the 2011 tsunami. We treasure our local beaches. If you do too, join the cleanup team on the 5^th, or better yet, pick out your own mile, half mile, or quarter mile section and keep it clean year round, as dozens of Grassroots Garbage Gang volunteers already do. 

After the Cretaceous: The Lincoln Creek Formation

Written May 7, 2012, published June 2014

Following the end-Cretaceous asteroid impact and subsequent dying off of dinosaurs and many large reptiles, 65.5 ma (million years ago), this area was a large shallow warm sea, dotted with volcanic islands, and filled with coral and oyster reefs. Along the east side of the sea, swamps grew on low slopes near the water, near present-day Centralia and Chehalis, WA. Plants grew in these swamps that later formed layers of coal.  In fossil-speak these are called coal swamps. This sea persisted for 50 my (million years), to around 20 ma, in the early Miocene. 

Many marine fossils are found in rocks from this period, including: snails, clams, corals, crinoids, brachiopods, barnacles, sharks’ teeth, fish, whales, seals and turtles. Burrowing shrimp from 45 ma were found in marine sediments; similar shrimp species live in Willapa Bay today.  

These geologic periods had wet warm climates and considerable volcanic activity due to a nearby subduction zone. Water-washed ash mixed with marine silts and sands makes a very good fossil-preserving combination. 

Three concretions and a fossil crab (inside a fourth concretion), were loaned by Karla Nelson for this article. She found these several decades ago while camping on Lincoln Creek in the east Willapa Hills with her family. Photo by Kathleen Sayce

A distinctive round rock called a ‘concretion’ often forms in marine sediments, where as fossilization proceeds, sediments cement together to make round rocks, with the fossil at the center. Concretions form easily with small shells and crustaceans, such as shrimp, barnacles and crabs. 

An outstanding sedimentary rock formation, the Lincoln Creek Formation, is from this period. The Lincoln Creek Formation is 2,000 to 9,000 feet thick, composed of tuffaceous (ashy) siltstone to fine-grained sandstone, and formed 37 ma.  It was originally described from a site on Lincoln Creek, off the Chehalis River in the Grays River Basin, Lewis County, WA, and covers about 1500 square miles in southwest Washington, including areas of Pacific and Wahkiakum Counties. This formation has a good exposure along the Willapa River east of Raymond.  

Mollusks and crustaceans are common in the Lincoln Creek Formation, as are microscopic foraminifera. Crabs are particularly common. Karla Nelson, Time Enough Books, and her family often camped on Lincoln Creek when she was a child, and collected concretions. When opened, these concretions typically contain fossilized crabs. 

Swampy shorelines persisted in lowlands along the west side of the Cascades during the Paleocene to early Miocene Period.  Trees in these swamps included palms and many conifers, mallows, species in the rose family (hawthorn, spiraea, amelanchier, sorbus, prunus, rubus), also gingko, banana, magnolia, and grasses. Specimens of many plant and animal fossils from this period can be seen at the Burke Museum ( HYPERLINK "http://www.burkemuseum.org/" www.burkemuseum.org/ ), Seattle, WA. 

The most similar modern analog to those ancient coal swamps is mangrove thickets in the tropics. For an analog of that ancient tropical shallow sea, the most similar area today is Indonesia, including earthquakes, tsunamis and active volcanoes. 

Lost Landscapes: Coastal prairies before beach grass 

Written May 31, 2012, published June 2012

One of these days I’m going to write a book about all the lost views and vanished landscapes in this area. Until that day comes, here’s a start on the changes:  Simply put, the plants that live on the dunes today are different from those of the past. This change in species also changed the appearance of the dunes.

Barbara Minard, Columbia-Pacific Heritage Museum, proffered this image of the Breakers Hotel in north Long Beach; the date is between December 1900 and 1904. This is a winter or early spring photograph, showing abundant driftwood on the beach, and on the dune, very low vegetation. There’s bare sand in the foreground, and some of it may be black sand. 

Image loaned from Columbia-Pacific Heritage Museum, of the Breakers Hotel, looking north. Note the extensive driftwood on the west (left side of the image), the fence near the middle left, and the treeline, well to the east of the beach and fore dune. 

The Breakers Hotel stood on the dune that formed after the last subduction zone earthquake, which was in 1700. When this photo was taken the dune was 200 years old.  Today, a row of houses stands in this spot, more than one thousand feet east of the present beach. Note that the vegetation is very low and like a patchy turf. American dunegrass is native here, and was growing in the dunes in 1900. It goes dormant in fall and dies back to the ground. Many other dune plants are also perennial and also die back to the ground in winter, so the ground would look partially bare in winter. 

In spring, an image taken at this same location would show wildflowers, including beach lupine, footsteps-of-spring, sea thrift, early blue violet, harsh paintbrush, western buttercup, checkered lily and gray beachpea. By midsummer, dune goldenrod and white brodiaea would be flowering. There may have been patches of tough-leaf iris and nodding onion. Two orchids, hooded maiden’s-tresses and coast piperia, flower in mid to late summer. Beach morning glory, yellow and pink sandverbena and beach carrot thrive in open sandy dunes.  Several other native grasses grew in small tufts and clumps. 

Today, many of these species have all but vanished from the dunes due to the arrival of introduced beachgrasses.  Pink sandverbena is so rare today that when it appeared at Leadbetter Point a few years ago, it had not been seen in Washington for more than 60 years.  Snowy Plovers, Streaked Horned Larks and Oregon Silverspot butterflies were among the animal species that thrived in these open sandy, wildflower-rich coastal prairies. 

Not all dune species have suffered. Still flowering on today’s dunes are beach strawberry, purple beachpea, and patches of yarrow, pearly everlasting and silver bursage.  Sandbur is doing very well, having made a transition from dunes to lawns, to the dismay of bare feet.  Kinnikinnick grows among shore pines, and is a good groundcover for home gardens, in both full sun and partial shade.  As for animals, native voles, shrews, and thatch ants thrive in the beachgrass dominated dunes. 

There are small fragments of coastal prairie scattered along the peninsula; they are no longer on the outer dune line, but well inland, usually more than one thousand feet from the present beach. The diversity of wildflowers in these small remnant patches is amazing.

The vanished landscape that this image hints at is a diverse coastal prairie, rich in colorful flowers, which thrived on summer drought, fire, salt, winter rain and strong winds. In comparison, today’s dunes are very nearly monocultures, dominated by two species of beachgrass.  Someone probably has summer pictures of the dunes from a century or more ago, showing those now-vanished wildflowers. I’d love to see the images of the wildflower prairie that used to flower along the ocean beach.  As for the introduced beachgrasses, these species make gorgeous green grasslands in the dunes, but these grasslands are completely different from the colorful dunes of past millennia. 

Photo courtesy Columbia-Pacific Heritage Museum