leaf to leaf

While fall colours quietly creep into woods and wetlands, one group of leaves remains vibrant green: the lily pads. In Bowmanville Marsh and Westside Marsh you may spot a sandpiper treading lightly from leaf to leaf while feeding on aquatic insects, or a beaver swimming from one lily patch to another while happily munching on a flower.

The herons, too, keep watch over lily pads for signs of movement from fish or frogs. Here a young black-crowned night heron hopes for a meal, at the edge of a dense stand of cattails which have lost nearly all their summer colour.

Toehold (click images for larger view)

The fall palette is reflected in the water as a beaver makes a swift passage across the marsh by setting sunlight.

 

Straight Ahead

The resident mute swans are often seen feeding among lily pads – and they leave their mark even when the birds themselves are nowhere in sight.

Feather Two

 

Feather One

 

Sandpipers prove that there are great advantages in being light of weight but wide of foot. On a quiet end-of-summer evening the surface of the marsh teems with insects, and the lily pads make even the deeper waters accessible to this wading bird.

Fast Forward

 

Afloat

In the vegetable garden, meanwhile, another nimble footed creature is springing from leaf to leaf – a grasshopper feasting on collard greens.

Copper Tack

Top photo: Sandpiper Buffet (click here for larger view)

season finale

On a chilly late August morning you may feel that your best-before date has come and gone, your colours have faded and your once-splendid wings are tattered. But by the warmth of the noon-day sun, when you’re sipping nectar from a silphium flower eight feet in the air, you can still make the most of the summer’s glories.

Ragged Red Admiral (click images for larger view)

Once-bright petals are curling and falling to the ground, but a new round of flowers is taking over in meadows and gardens.

Light-Emitting Dandelion

 

Aster

 

Meanwhile the marsh is alive with a profusion of dragonflies and damselflies.

Dark Dragon

 

Dragonfly Sky

 

Whether in the marsh, harbour or along the breakwater, the ducks are no longer skittish – they continue feeding while a kayaker drifts within a few feet.

Duck Diner 1

Duck Diner 2

An adult Black Crowned Night Heron is not a flashy bird, but this nearly full-grown juvenile shows real sartorial flare.

One Fine Heron

Several Great Blue Herons can often be seen in one small part of Bowmanville Marsh.

Wingspan

Along this coast there is another distinct sign of summer’s end: salmon are approaching the mouths of creeks, and that means fishing charters linger near shore while hopeful anglers line the breakwater.

Observation

 

Illustration at top of page: Red Dragon and Blue Dragon

Higher Ground

With Lake Ontario at record high levels, coastal marshes have now spilled over large areas which are normally more or less dry land.

Edges (click images for larger view)

To take pictures along the walking trail along Bowmanville Creek at the north side of Bowmanville Marsh, you need to add hip waders to your photography kit – mere knee-high boots will only get you around the edges of this wetland.

Mirror

Suspension

Though the bare ground has been well under the waters for weeks now, many of the moist woodland species appear to be thriving.

 

In the Catbird Seat

Layers

Mollusc II

The meadow at the east end of West Beach Road, just 100 meters from the Lake Ontario shoreline, also teems with activity.

With masses of rotting wood from generations of huge willow trees along the edge of this meadow, there are billions of ants – now all flushed out of the ground to find a dry perch. Anything sticking out of the water – a blade of grass, stem of last year’s goldenrod, or the odd passing photographer – soon acquires a population of ants. Myrmecophobes be forewarned.

Colonies

But there are bigger animals making the grass rustle – schools of carp now swim and splash through this meadow.

Velocity

Patterns

If you are a bottom feeder this is fine dining.

Mouth

Top photo: Return (click here for larger image)

Coastal Engineering

Lake Ontario and the coastal marshes are near record highs this spring. While this can lead to sleepless nights due to fears of flooding, the high water also makes for great kayaking and wonderful views at sunset and sunrise.

Port Darlington cottages (click image for larger view)

 

Channel Sunset (click image for larger view)

 

Drydock (click image for larger view)

 

Breakwater (click image for larger view)

 

Electricallusion (click image for larger view)

 

Top photo: Westbound Express (click here for larger view)

Marsh monoculture – invasive phragmites and the threat to wetlands

We’ve all seen those amazingly tall reeds with the feathery seed heads that glow in the autumn sunset and last right through the winter, and which have appeared in dense stands on roadsides wherever there’s a bit of water.

Those beautiful reeds are phragmites, and they’re deadly to nearly every other plant, bird, amphibian and predator in our wetlands.

That was the message in a sobering talk by Janice M. Gilbert on April 19. Since there are two big marshes in my neighbourhood, and phragmites are scattered widely in this area, I was keenly interested.

The species of phragmites (pronounced frag-mite-eez) that is causing so much concern is the European common reed. Though it is closely related to a native variety of phragmites, the European version has no natural controls in North America and quickly multiplies into a dense monoculture.

Dr. Gilbert has been researching phragmites and working in phragmites control efforts for the past 10 years. She spoke at the Purple Woods Conservation Area this week, in an event sponsored by Scugog Environmental Advisory Council in partnership with Central Lake Ontario Conservation, Kawartha Conservation, North Durham Nature, Scugog Lake Stewards and Nature Conservancy of Canada.

Gilbert explained that the European common reed is awesomely prolific because nearly every part of the plant will sprout and grow if dropped in wet soil.

It produces a large seed head, and the seeds can be carried for kilometers by the wind – but that’s just one of its strategies for dispersal. Its rhizomes shoot out for many feet in every direction. And if a live stalk is knocked down, it will send up new shoots all along its length.

Dispersal methods of phragmites. (From Invasive Phragmites – Best Management Practices in Ontario)

This explains why phragmites have spread so widely along highways and rural roads. Heavy equipment used in road construction and maintenance, particularly tracked machinery, carries mud from one site to another. If pieces of phragmites are carried in that mud, and it doesn’t completely dry before being dropped in a new location, a new outbreak of the reed will soon be growing.

Spread of phragmites in the Great Lakes area. (From Invasive Phragmites – Best Management Practices in Ontario)

Habitat destruction

Phragmites take over a location so rapidly because they suck up nutrients and water faster than nearly all competitor plants, and because they are allelopathic – their roots secrete chemicals which are toxic to other plants.

Native insect species have not evolved to feed on phragmites – and that means insect-eating birds don’t find food in a phragmites monoculture. Muskrats don’t like phragmites, so they don’t build their characteristic mounds, surrounded by a bit of open water, within phragmites-dominated marshes. Birds will nest right around the edges of phragmites stands, but not very far within – the stands are too dense. And since a fully-developed phragmites monoculture can have 200 stalks per square meter, the growth is so dense that turtles trying to fight their way through are sometimes trapped, succumbing to starvation.

In short, the entire food chain from bottom to top is disrupted when phragmites take over a wetland.

A tale of two marshes

This ecological horror story is of more than passing local concern. There are two important coastal wetlands in my neighbourhood. In one of them – Westside Marsh – there are already major stands of phragmites all along the west side.

Phragmites are established all along the west edge of Westside Marsh, next to the St. Marys Cement quarry. Photo from Nov 2015.

The other local marsh, Bowmanville Marsh, appears to be phrag-free so far – but there are stands of phragmites barely 100 meters away.

This stand of phragmites is along West Beach Road, just north of Bowmanville Marsh.

 

A stand of phragmites on the south side of Hwy 401, near the Liberty Street exit, extends to within a few meters of Soper Creek. This creek flows south and joins Bowmanville Marsh.

 

A long and difficult battle

The good news is that phragmites infestations can be controlled. The bad news is that the process is labour-intensive, it sometimes requires specialized equipment, efforts need to be repeated at least two or three years in a row, and it is almost impossible to get large stands of phragmites knocked back without application of concentrated glyphosate.

Dr. Gilbert described her own gradual conversion to advocating the use of glyphosate – as a wetland ecologist, her first reaction was to recoil at the thought of using herbicides around wetlands – and her frustration that the glyphosate formulations used to great success in phragmites-control programs in the US are not usually available or permitted in Canada.

In our local area, Diana Shermet of Central Lake Ontario Conservation Authority (CLOCA) confirmed that to date, there have been no phragmites-control programs in Westside Marsh or Bowmanville Marsh. High cost is a major barrier, though CLOCA has received funding and carried out phragmites-control programs in a few areas in Durham region.

As Gilbert noted, successful phragmites-control efforts are usually co-ordinated between several agencies. It does little good to get phragmites out of a marsh if there are stands a few meters away along roadsides. And it does little good to get phragmites out of a ditch along a municipal road, if there are stands along a regional or provincial highway nearby.

The Ontario Phragmites Working Group is providing information and expertise to agencies across the province, and we certainly hope that the provincial government, Durham Region, Municipality of Clarington and CLOCA will find a way to take up this effort in the near future.

Top photo: a stand of phragmites in Westside Marsh, photographed in April 2017. (Click here for larger version)

spectrum of motion

The swift coming of a cold front in recent days brought vibrant colour and motion to the lake shore.

 

‘Horizon’ – Bowmanville West Beach, Lake Ontario, March 10, 2017, 4:44 pm

 

‘Flight’ – Bowmanville West Beach, March 10, 2017, 4:46 pm

 

‘Rivulet’ – Bowmanville West Beach, March 11, 2017, 6:01 pm

 

‘Pier’ – St. Marys Cement docks, Lake Ontario, March 11, 2017, 6:18 pm

 

‘Speed of Light’ – Lake Ontario, Bowmanville, March 8, 2017, 5:31 pm

 

‘Slow Growth’ – Bowmanville Marsh, Lake Ontario, March 12, 2017, 9:36 am

 

‘Depth’ – Bowmanville Marsh, Sunday March 12, 9:45 am

Click photos above for larger versions.

Top photo: ‘Purple splash’ – Port Darlington Lighthouse, Lake Ontario, March 8, 2017, 5:20 pm (click here for larger version)

The autumn of winter

Red-wing blackbirds, finches and grackles are returning. Raccoons and skunks are making their rounds at night. How do they all know it’s spring? For the last few days it hasn’t been the warmth of the air – it must be the warmth of the light.

 

‘Stalks’ (click image for larger version)

 

‘River’

 

‘Light Curves’

 

‘Raccoon Road II’ (click image for larger version)

 

‘Contemplation’ (click image for larger version)

 

‘Alternation’ (click image for larger version)

 

Top photo: ‘From a to b’ (click here for larger version)

Sideways Glances

With sunlight in short supply in southern Ontario for the past month and spring greenery still at least six weeks away, it’s been a challenge to capture much colour in outdoor photos. But that makes every brief break in the clouds all the more precious.

These panoramas were composed in the old-school, 1990s way (pieced together in Photoshop from several shots) rather than the new-fashioned way (waving a smart-phone camera at the landscape and choosing the “create panorama” function).

 

Waterway, Saturday afternoon, February 4 (click here for large version)

 

Breakwater/Snowshower, Monday morning, February 6 (click here for large version)

 

Seating is limited, Monday afternoon, February 6 (click here for large version)

 

Top photo: Winter’s Dawn on Bowmanville Marsh, Saturday morning, February 4 (click here for large version)

the edge of cool

On a breezy Sunday morning in the marsh, the line between open water and thin ice sometimes disappears.

Ripple (click image for larger view)

 

Neon (click image for larger view)

 

Foot (click image for larger view)

 

Flight

Top photo: Reed (click here for larger image)

Down to the waterline

Water levels in Bowmanville Marsh were low in the fall and the water has dropped lower with each freeze/thaw cycle. That means there are new sights to see, and as long as the mud is frozen the whole marsh is easily accessible.

These photos are from Sunday morning, January 15.

 

Stripe (click for larger version)

 

All that glisters (click for larger version)

 

Shroom (click for larger version)

 

Raccoon Road (click for larger version)

 

Rift (click for larger version)


Top photo: Peaks (click here for larger version)