Wetland Vegetation at Shea Parkside

Last updated July 30, 2006


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Introduction

I have been exercising my public prescriptive rights of access to conduct regular weekly photosurveys of the Shea Parkside property since October 2002 in order to document ponding and wetland vegetation that was somehow missed by the Parkside EIR.  I share my findings on a regular basis with Coastal Commission staff and Ron Metzler of Shea Homes.

Cumulative Wetland Vegetation Map

When you digitally merge all of the vegetation maps on this page, it appears that large portions of this property may be unbuildable due to the presence of wetland vegetation.  It doesn't take a rocket scientist (or a biologist) to know that something is going on here when you have so many different wetland species present on this property:


Keep in mind that the city parcel is under intensive agricultural use.  Parts of the city parcel are rarely fallow for long, and the margins of the farm area are routinely weed-whacked and herbicided.  And yet wetland plants seem to pop up quickly when given a chance.  Just imagine what this map would look like if the entire city parcel were left fallow for only one rainy season.  :-)


Wintersburg Channel vs. Shea Parkside -- It's all the same to the vegetation!




The image at the top of this page summarizes my findings -- every significant wetland plant species that can be found down inside the Wintersburg Channel can also be found on the adjacent Shea Parkside property.  Hmmm... if you can classify the channel as a wetland based on vegetation alone, then it seems pretty easy to classify Parkside as a wetland too!

Before we go into the details about the plants I've seen, a little education is needed on how wetlands are determined and vegetation is classified.

Wetland Indicator Parameters

Federal agencies require the following 3 parameters to all be present for a piece of land to be considered wetlands:
  1. Hydrophytic (water-loving) vegetation; and
  2. Surface ponding or soil saturation to within 12 inches below ground surface that persists for a consecutive number of days greater than or equal to 5% of the local growing season.  Since the growing season is year-round in Southern California, that means 18 consecutive days; and
  3. Hydric soils indicative of saturated moisture conditions
California state agencies such as the Coastal Commission only require the presence of any ONE of the above parameters in order for land to be considered a wetlands.

The Shea Parkside property contains ample amounts of 1) hydrophytic vegetation and 2) surface ponding.  :-)

Wetland Vegetation Categories

Wetland vegetation species are classified into a spectrum of categories that indicate the probability of the species being found in wetlands, ranging from seldom (FACU) to almost always (OBL).  These categories are as follows:

Code
Wetland Type
Comment
OBL
Obligate Wetland
Occurs almost always (estimated probability 99%) under natural conditions in wetlands.
FACW
Facultative Wetland
Usually occurs in wetlands (estimated probability 67%-99%), but occasionally found in non-wetlands.
FAC
Facultative
Equally likely to occur in wetlands or non-wetlands (estimated probability 34%-66%).
FACU
Facultative Upland
Usually occurs in non-wetlands (estimated probability 67%-99%), but occasionally found on wetlands (estimated probability 1%-33%).
UPL
Obligate Upland
Occurs in wetlands in another region, but occurs almost always (estimated probability 99%) under natural conditions in non-wetlands in the regions specified. If a species does not occur in wetlands in any region, it is not on the National List.

Furthermore, each category code can be followed by a plus (+) or minus (-) modifier.  A plus indicates the particular plant species can be found in wetlands with a probability towards the higher end of the given range.  A minus indicates that the species can be found in wetlands with a probability towards the lower end of the given range.

For more information, please see http://plants.usda.gov/wetinfo.html.

Parkside Wetland Vegetation by Category

Click on each entry in the following table to jump to the appropriate species section on this web page.

OBL
(in wetlands >= 99%)
FACW+
(in wetlands 83-99%)
FACW
(in wetlands 67-99%)
Broadleaf Cattail
Curlytop Knotweed
Curved sicklegrass
Pickleweed
Salt Sandspurry
Seaside Heliotrope
Water Speedwell
Alkali Seaheath
Annual Rabbitsfoot Grass
Brass Buttons
Toad Rush
Hyssop Loosestrife
Poison Hemlock
Saltgrass
Slim Aster
Spreading Alkaliweed
Tall Flatsedge
Verrucose Seapurslane
FACW-
(in wetlands 67-82%)
FAC
(in wetlands 34-66%)

Annual Bluegrass
Curly Dock
Alkali Mallow
American Black Nightshade
Australian Saltbush
Bermudagrass
Birdfoot Deervetch
Bristly Oxtongue
Canadian Horseweed
Fivehorn Smotherweed
Horehound
Italian Ryegrass
Lambsquarters
Little Hogweed
Mojave Seablite
Nuttall's Povertyweed
Prickly Lettuce
Scarlet Pimpernel
Southern Tarplant
Tree Tobacco
Yellow Sweet Clover


OK... now it's time for some incriminating vegetation pictures!  Click on thumbnail images for full-res versions, and click on the scientific species name to view the USDA plant record.


Broadleaf Cattail (Typha latifolia, OBL)



New species for the summer of 2006, favoring the "AP" wetland area.



Bloom and leaves.



Bloom height detail.



Bloom width detail.



Leaf width detail.



Stem detail.


Curlytop Knotweed (Polygonum lapathifolium, OBL)


New for the epic 2004-2005 rainfall season.


Note that each leaf has a distinctinve inkspot-like blotch in the center.


Stem detail.


Curved Sicklegrass (Parapholis incurva, OBL)



Curved sicklegrass can be found in the upper county parcel.  This species is tolerant of moderately salty conditions.



Detail shot of a small sprig.  Those pointy ends are sharp!



Note the green and purplish coloration.



Clumps will grow to about a foot and a half wide.  This is obviously a dead clump.



Detail shot of a large sprig plucked at the root.



Sicklegrass distribution in the tire rut wetland area of the upper county parcel.  I only have 10 marker sticks, and all 10 were used in this photograph.



Sicklegrass distribution up against the county/city border fence.  I only have 10 marker sticks, and all 10 were used in this photograph.


Pickleweed (Salicornia virginica, OBL)



Pickleweed is a major saltmarsh indicator species and is found primarily in the lower county parcel.  But also note that a few scattered individuals can be found in the upper county parcel where Shea wants to build houses.

Note that pickleweed can be found in plentiful quantities down inside the Wintersburg Channel along the northern bank.  If a wetland plant species is happy growing down inside the Wintersburg Channel (an obvious wetland), and that same species is also happy growing on the adjacent Parkside property, then it seems likely that Parkside is also a wetland.



One or two individual plants on the upper county parcel with a ruler for scale.



A ladybug in the pickleweed.



A western pygmy blue butterfly in the pickleweed.  These butterflies are really really tiny (as their name implies).



The scattered pickleweed individuals of the upper county parcel.  This area was largely bare earth after the December 2002 grading incident.  Several of these pickleweed individuals are newly sprouted since then.



Pickleweed in early summer bloom with extremely tiny yellow flowers.


Salt Sandspurry (Spergularia marina, OBL)

Salt sandspurry is found in simply huge numbers on both the city and county parcels.  The big, big story is that very large numbers of salt sandspurry were hidden within the unirrigated winter oats planted on the city parcel.  Several treks through the middle of the waist-high oats turned up salt sandspurry at nearly every place where enough sunlight could still reach the ground.

I did not start tromping through the oats until mid-February 2003 when the northern half of the oats was plowed under without being harvested.  Once that happened, the southern oats became fair game for my explorations.  My limited treks through the oats imply fairly even distribution of salt sandspurry all the way from the northernmost salt sandspurry line on the map down to the city/county border.  But my map only reflects my limited treks, not the presumed distribution.  I did not make any treks through the northern oats prior to them being plowed under, so therefore that part of the map is blank.  Based on the heavy southern distributions, I would expected to have found them in the north had I looked there.

Another important observation is that salt sandspurry can be found in large quantities down inside the Wintersburg Channel along the northern bank, with some even growing below the high tide line.  If a wetland plant species is happy growing down inside the Wintersburg Channel (an obvious wetland), and that same species is also happy growing on the adjacent Parkside property, then it seems likely that Parkside is also a wetland.

On February 7, 2004, salt sandspurry started sprouting in all of the "hotspot" locations seen during the 2002-2003 season.



Salt sandspurry features tiny lavender flowers.



You can generally find salt sandspurry (left) in all of the same places you can find brass buttons (right), including deep within the city parcel oats where this photograph was taken.  Salt sandspurry and brass buttons both started sprouting all over the property once the first significant storms of the rainy season arrived.



Salt sandspurry growing in a pond on the county parcel.  Now is this a wetland indicator species or what?  ;-)



As the county parcel vernal pool receded, it left a ring of salt sandspurry around the maximum area of the pool.



Dead sandspurry (brownish/green above the tire) still tells a tale of county parcel wetlands during the dry season when it contrasts nicely with the red/orange iceplant.



By February 2005, sandspurry was the dominant vegetation in the fallow southwestern section of the agricultural zone.  The 13,500sq ft shown in the above photo is merely the size of the dominance zone, where 99% of the vegetation consisted of carpet-like sandspurry with scattered brass buttons.  However, please note that sandspurry can be found throughout the entire fallow zone in the above photo, a total area of perhaps 50,000 - 75,000 sq ft.



Ground-level photo showing the 13,500sq ft carpet of sandspurry as seen in February 2005, with brass buttons and a scattered unknown chenopod vegetation species.


Seaside Heliotrope (Heliotropium curassavicum, OBL)



Seaside heliotrope is clustered in two zones on the property -- the county parcel and the northeastern area of the city parcel.  The plants are much denser and more numerous on the county parcel whereas on the city parcel the plants are distributed over a larger range.

Seaside heliotrope can also be found growing down inside the Wintersburg Channel underneath the Graham Street bridge.



A mature plant on the city parcel that has finished blooming.



Closeup of a bloom.  Note how the center is purplish and the outer flowers are yellowish.



The motherlode on the county parcel.


A monarch butterfly feeding on the county heliotrope.


Growing underneath the Graham Street bridge.


Water Speedwell (Veronica anagallis-aquatica, OBL)


New for 2004-2005, this species can be found scattered about in the southwestern portion of the agricultural zone.


Context shot with ruler for scale.


Bloom detail shot.


Alkali Seaheath (Frankenia salina, FACW+)



Alkali seaheath, a major saltmarsh wetland indicator, is primarily found on the lower county parcel.  But scattered individuals can also be found on the upper county parcel where Shea wants to build houses.



Alkali seaheath in spring bloom.



Showing the distribution of the northernmost scattered individuals on the upper county parcel.  This area was largely bare earth after the December 2002 grading incident.  Most of these seaheath plants are newly sprouted since then.  There are additional scattered individuals on the upper county parcel  beyond the left frame of this image.



The red ruler indicates the northern most individual extremely close to the county/city border fence.


Annual Rabbitsfoot Grass (Polypogon monspeliensis, FACW+)



Rabbitsfoot grass sprouted in large quantities on the county parcel in the spring.  Scattered individuals can be found on the city parcel where the irrigation pipes were leaking during the dry season.

Rabbitsfoot grass can also be found growing down inside the Wintersburg Channel along the northern bank.  If a wetland plant species is happy growing down inside the Wintersburg Channel (an obvious wetland), and that same species is also happy growing on the adjacent Parkside property, then it seems likely that Parkside is also a wetland.



Stalk detail with ruler for scale.



Lots of rabbitsfoot grass growing right up against the county/city border fence.  Similar clusters exist in multiple locations throughout the upper county parcel.



The beauty shot of the county parcel vernal pool's backlit rabbitsfoot grass at sunset.


Brass Buttons (Cotula coronopifolia, FACW+)


Brass buttons is found in simply huge numbers on both the city and county parcels.  The big, big story is that very large numbers of brass buttons were hidden within the unirrigated winter oats planted on the city parcel.  Several treks through the middle of the waist-high oats turned up brass buttons at nearly every place where enough sunlight could still reach the ground.

I did not start tromping through the oats until mid-February 2003 when the northern half of the oats was plowed under without being harvested.  Once that happened, the southern oats became fair game for my explorations.  My limited treks through the oats imply fairly even distribution of brass buttons all the way from the northernmost brass buttons line on the map down to the city/county border.  But my map only reflects my limited treks, not the presumed distribution.  I did not make any treks through the northern oats prior to them being plowed under, so therefore that part of the map is blank.  Based on the heavy southern distributions, I would expected to have found them in the north had I looked there.

Anoither important observation is that brass buttons can be found in large quantities down inside the Wintersburg Channel along the northern bank.  You can find many thousands of brass buttons a couple of miles upstream from here between Edwards Street and Goldenwest Street.  If a wetland plant species is happy growing down inside the Wintersburg Channel (an obvious wetland), and that same species is also happy growing on the adjacent Parkside property, then it seems likely that Parkside is also a wetland.

The "M" on this map indicates the presence of the motherlode; see below.

On February 14, 2004, brass buttons started sprouting in the vicinity of the "mother lode" on the city parcel.


Individual plants can grow to be about a foot wide and have distinctive yellow flowers about 1cm in diameter.


Brass buttons hiding deep within the city parcel oats in this view looking northward from the Wintersburg Channel levee.  Each marker stick indicated by a purple arrow denotes one or more brass buttons.  I only brought 10 marker sticks with me, and all 10 are visible here.  My photo archives contain many additional pictures showing brass buttons distributions on the city parcel.


Brass buttons are also quite common in the county parcel as indicated by the marker sticks.  The plants started sprouting both here and on the city parcel after the first storms of the rainy season.  Brass buttons can be found throughout the upper county parcel and on the portion of the lower county parcel identified as a potential Coastal Commission wetland.


Brass buttons can be found year-round on the city parcel where the irrigation pipes are leaking.  I swear I did not intentially frame this photograph to say it, but "Notice of Ending (Coastal Development) Permit" is definitely what I hope to achieve.  ;-)

 

The motherlode on the city parcel.  This area is approximately 10 feet long and 4 feet wide.  It is indicated on the above map by the letter "M".


The oats reveal their secret -- brass buttons hiding in the sunnier locations.


Detailed closeup of a blooming brass buttons.  Check out the geometric patterns in the flower when viewing the full-res version of this photograph.


Toad Rush (Juncus bufonius, FACW+)



This species is newly identified during 2004-2005 and has a range similar to annual bluegrass.


Whole plant shot.


Detail shot.


Hyssop Loosestrife (Lythrum hyssopifolia, FACW)


Hyssop loosestrife (who names these things anyway?) is found exclusively in ponding zones.  This species is also present in ponding zones in the State Lands Commission property to the southwest.


Juvenile form growing in a ponding zone.


Mature form.


Bloom detail.


Poison Hemlock (Conium maculatum, FACW)



Poison hemlock can be found in a well-defined area in the county parcel.  This same species infests Shipley Nature Center.



The juvenile stage before blooming has started.  Clearly hemlock is the dominant vegetation at this location.



Mature plants more than 6 feet tall.



Closeup of a bloom.


Saltgrass (Distichlis spicata, FACW)



Saltgrass is mostly found on the lower county parcel except for one small area of the city parcel.

But you can also find saltgrass growing down inside the Wintersburg Channel along the northern bank.  If a wetland plant species is happy growing down inside the Wintersburg Channel (an obvious wetland), and that same species is also happy growing on the adjacent Parkside property, then it seems likely that Parkside is also a wetland.



The yellow ruler marks the city saltgrass before it got disked in December 2002 by the farming operation.



Saltgrass detail shot.


Slim Aster (Symphyotrichum subulatus, FACW)








Spreading Alkaliweed (Cressa truxillensis, FACW)


Spreading alkaliweed is primarily found on the city parcel adjacent to the northern levee of the Wintersburg Channel.  But note that you can also find the same species along the northern bank inside the channel.  If a wetland plant species is happy growing down inside the Wintersburg Channel (an obvious wetland), and that same species is also happy growing on the adjacent Parkside property, then it seems likely that Parkside is also a wetland.

If you look really closely on this map, you will find an "A" on the northeast corner of the intersection of Hillgate & Glenstone.  Yes, spreading alkaliweed is growing in somebody's lawn there.


Individual plants are fairly small, but they can aggregate into large clumps.


Small white flowers bloom in the late spring.


Spreading alkaliweed dominating in this southwestern view of the city parcel adjacent to the northern levee of the Wintersburg Channel.


Tall Flatsedge (Cyperus eragrostis, FACW)


Tall flatsedge can be found in widespread locations on the city parcel, as well as down inside the Wintersburg Channel (where it is found with 1 or 2 other species of sedges).

The flatsedge locations on the above map were unirrigated areas at the time the flatsedge plants were observed.  It should be noted that in September 2003 large quantities of flatsedge (not shown on map) can be found intermixed with the irrigated bean crop in the northern portion of the city parcel.


Flatsedge was first noted in April 2003 growing in large quantities in a fallow area of the city parcel.


The entire city parcel lay fallow in April 2004, and positively huge quantities of flatsedge were noted.  With the exception of two lone oat stragglers, all of the green you see in the above image is flatsedge.  Click on the image to view the full-res version to better appreciate the flatsedge density at this location.


The farmers are VERY aggressive about disking/weeding/herbiciding flatsedge.  I had been trying to find a blooming flatsedge since April 2003, and I did not succeed until late August 2003 when I found this specimen the farmers had missed by the Kenilworth back wall.  If you look closely at the left background in this shot, you can see some American black nightshade, another wetland indicator species.


Scale shot of the Kenilworth flatsedge specimen.


Detail shot of the blooming Kenilworth flatsedge specimen.


Verrucose Seapurslane (Sesuvium verrucosum, FACW)



Verrucose seapurslane is found in large quantities on the lower county parcel.  Some scattered individuals can be found outside of this zone, including the city parcel.



Detail shot showing scale and flowers.



Growing on the city parcel at the edge of the oats.  Some spreading alkali weed is in the lower left corner.



The red ruler marks a rogue individual growing in the county parcel vernal pool area.


Annual Bluegrass (Poa annua, FACW-)



Huge quantities of bluegrass were found across the northern portion of the agricultural zone during the winter fallow season of 2004-2005.








Curly Dock (Rumex crispus, FACW-)

May 1, 2005: Hmm... it turns out that multiple Rumex species are present, including Rumex obtusifolia.  Further research will be required to pin down all of the species identifications.  Stay tuned!


This species was first observed by me in February 2005.





Alkali Mallow (Malvella leprosa, FAC)


Alkali mallow is found primarily adjacent to the northern levee of the Wintersburg Channel but can also colonize deep into the city parcel during fallow periods.


But it can also be found in large quantities on fallow portions of the city parcel.  The area shown above had only been fallow for 2 or 3 weeks.



This plant has pale yellow flowers.



It is clearly the dominant vegetation in some areas adjacent to the channel.



American Black Nightshade (Solanum americanum, FAC)

American black nightshade can be found in large quantities wherever the farmers allow it to persist.


The largest quantity of nightshade in 2003 was found in a large, unirrigated fallow area on the city parcel in mid-April.  The fallow area appears in the above photograph as a large rectangle of somewhat patchy vegetation in between cabbage to the north and oats to the south.


Another good quantity of nightshade could be found in the patchy cabbage near Graham Street during May 2003.


Nightshade was extremely common on the fallow city parcel in April 2004.  Click the above image to view the full-res version to see the many nightshade plants present at this location.


An individual nightshade plant.


Flower detail shot.


Australian Saltbush (Atriplex semibaccata, FAC)


Australian saltbush is found primarily in the county parcel.  A small secondary population can be found within the city parcel to the north of the abandoned bunker.


This species has distinctive red berries in the late summer and early fall.


The berries are quite small as you can see from this scale shot.


This species can cover large areas of the ground.  Note the red ruler for scale.


Bermudagrass (Cynodon dactylon, FAC)

Numerous patches of bermudagrass can be found along the periphery of the farming area as well as in a few locations in the county parcel.

Detail shot.


The biggest expanse of bermudagrass on the property.  The city parcel saltgrass is in the far background of this picture.


Quite a bit of bermudagrass can be found along the Kenilworth back wall.


Birdfoot Deervetch (Lotus corniculatus, FAC)



New for 2005, this species popped up shortly before the main agricultural area got disked.




Bristly Oxtongue (Picris echioides, FAC)


This species is very similar to the common non-wetland garden weed sow thistle (Sonchus oleraceus) but differs in the following areas:


Flower detail.  Note the black structures in the middle of the flower.  Sow thistle lacks these black things.


Leaves and stems detail.  Note the bristles in the full-res picture.


Width scale.


Height scale.


Canadian Horseweed (Conyza canadensis, FAC)


So far just one location up against the Kenilworth back wall.


This particular plant was 3 or 4 feet tall.


Fivehorn Smotherweed (Bassia hyssopifolia, FAC)



Fivehorn smotherweed was found in good quantities in the county parcel and along the southern edges of the city parcel oats.



The juvenile form of the plant.



The mature form of the plant.



The juvenile form as seen in ground-level profile.


Horehound (Marrubium vulgare, FAC)


This species tends to favor shady areas under eucalyptus trees, but if you look carefully you can find a few plants out in the open.  It can also be found growing between PCH and Inner Bolsa Bay.


The red ruler indicates some horehound growing in the northwestern corner of the lower city parcel.


A few plants were still blooming in December 2003.


Detail shot of spent blooms.


Italian Ryegrass (Lolium multiflorum, FAC)


This species was noted primarily in the county parcel but also in a few locations in the city parcel in April 2003.  Detailed mapping has commenced as of March 2004..


Stalk detail.


Lambsquarters (Chenopodium album, FAC)


This species was observed sprouting in the fallow city parcel during December 2003.  It is also quite common in the lower county parcel (will be mapped during 2004).


The larger plant is lambsquarters.  The smaller plant is dwarf nettle (Urtica urens).


Mojave Seablite (Suaeda moquinii, FAC)


Mojave seablite is found exclusively on the county parcel.  There is some confusion over the wetland indicator status of this plant, so I will use the average of FAC.


An exceptionally large individual.


Detail shot.


Fruits will turn red under saline conditions.


Nuttall's Povertyweed (Monolepis nuttalliana, FAC)

This species was mentioned in the EIR but was not identified by me until 2005.  Mapping is still in progress.


Leaf detail.  The white/yellow flowers in the background are a different species -- dog mayweed (Anthemis cotula).


Little Hogweed aka Purslane (Portulaca oleracea, FAC)



Purslane can be found along the northern border of the city parcel (as well as in the cracks of my driveway).



Purslane grows pretty big in the wild compared to that puny stuff in my driveway cracks.



Closeup of the little yellow flowers.


Prickly Lettuce (Lactuca serriola, FAC)


This species is new for 2005; mapping is still in progress.  Unfortunately this species was not identified until after the main agricultural field had been disked, so the resulting map will not capture the full range that existed prior to disking.


Full plant shot.


Leaf detail shot showing the spines on the underside of each leaf.


Scarlet Pimpernel (Anagallis arvensis, FAC)



A few widely scattered individuals have been found so far.  This is a HUGE pest growing in my front yard.  It would happily take over my entire yard if I allowed it to.



The middle of the county parcel in combination with salt sandspurry and rabbitsfoot grass.



Adjacent to the cabbage on the northern border of the city parcel.  Some nightshade is also visible along the top edge of this photograph.


Southern Tarplant (Centromadia parryi ssp. australis, FAC)

Southern tarplant is more noted for its rarity rather than its wetland indicator status.  Note that the Hearthside Brightwater project on the adjacent Bolsa Chica mesa had to be reconfigured in order to protect this CNPS List 1B rare plant

At least a dozen specimens of this plant are growing on the Shea Parkside property as of June 2005.  Due to the sensitive nature of this plant, I am not publicizing the exact locations.  However, both the Coastal Commission and Shea Homes have been notified in detail.



One specimen just starting to bloom.



Bloom detail.


Tree Tobacco (Nicotiana glauca, FAC)


A few individuals widely scattered throughout the eucalyptus areas of the property.  More numerous on the adjacent Goodell mesa.

As the "tree" part of the name implies, this is a fairly large plant, topping out between 6 and 10 feet tall.

Bloom detail.


Male Allen's hummingbird for scale.


Yellow Sweet Clover (Melilotus indica, FAC)



Large quantities of this all over the agricultural zone.



Detail shot.

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