Spring Break Hike

During spring break, I hiked through Hahamongna Watershed Park, which is located in the north side of Los Angeles County near Caltech and the Rose Bowl. I saw and identified more than 25 taxa. During my hike, I was surprised by how many plants and animals could live in the park despite its poisoned groundwater. Hahamongna Park is a NASA superfund site and is located adjacent to a NASA-Caltech facility, from which dangerously high quantities of poorly-contained perchlorate and volatile organic compounds seeped into the groundwater. Despite the high concentrations of toxic chemicals in the water, the area flourishes with native Californian plants and animals. In fact, because of the site's superfund status, development projects are prohibited within the park's boundaries. Perhaps this reason is why such biodiversity exists: a lack of suburban and urban development provides a safe haven for plant and animals species that would otherwise be pushed out by human encroachment. For the time being, the park serves as a wash for the nearby Devil's Gate Dam which, although mostly unused and archaic in comparison to the alternative plans to channelize the area, provides a primary function to the human communities downstream.

Posted on April 1, 2013 08:22 PM by ericandersen ericandersen

Observations

Photos / Sounds

What

Anna's Hummingbird (Calypte anna)

Observer

ericandersen

Date

March 20, 2013

Photos / Sounds

What

Mourning Dove (Zenaida macroura)

Observer

ericandersen

Date

March 20, 2013

Photos / Sounds

What

European Starling (Sturnus vulgaris)

Observer

ericandersen

Date

March 20, 2013

Photos / Sounds

What

Argentine Ant (Linepithema humile)

Observer

ericandersen

Date

March 20, 2013

Photos / Sounds

What

Coast Live Oak (Quercus agrifolia)

Observer

ericandersen

Date

March 20, 2013

Photos / Sounds

What

California Scrub Oak (Quercus berberidifolia)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Musk Stork's-Bill (Erodium moschatum)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Barleys (Genus Hordeum)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Coast Live Oak (Quercus agrifolia)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Mule Fat (Baccharis salicifolia)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Poplars, Cottonwoods, and Aspens (Genus Populus)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Barleys (Genus Hordeum)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Italian Thistle (Carduus pycnocephalus)

Observer

ericandersen

Date

March 13, 2013

Description

Can anyone identify the plant with the pointed leaves?

Photos / Sounds

What

Willows (Genus Salix)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Cabbages and Mustards (Genus Brassica)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Coast Live Oak (Quercus agrifolia)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Mule Fat (Baccharis salicifolia)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Pineapple-Weed (Matricaria discoidea)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

White Horehound (Marrubium vulgare)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Mule Fat (Baccharis salicifolia)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Distant Phacelia (Phacelia distans)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Western Sycamore (Platanus racemosa)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Western Sycamore (Platanus racemosa)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Dwarf Nettle (Urtica urens)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Desert Cottontail (Sylvilagus audubonii)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

California Towhee (Melozone crissalis)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Song Sparrow (Melospiza melodia)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Anna's Hummingbird (Calypte anna)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Buckthorns (Genus Rhamnus)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Knapweeds (Genus Centaurea)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Coffeeberry (Frangula californica)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Wild Buckwheats (Genus Eriogonum)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

High-latitude Oaks (Subgenus Quercus)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Chaparral Whitethorn (Ceanothus leucodermis)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

California Buckwheat (Eriogonum fasciculatum)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

California Sagebrush (Artemisia californica)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Laurel Sumac (Malosma laurina)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Willows (Genus Salix)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Distant Phacelia (Phacelia distans)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Suncups (Genus Camissoniopsis)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Shortlobe Phacelia (Phacelia brachyloba)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Sow Thistles (Genus Sonchus)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Poison Hemlock (Conium maculatum)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Castor Bean (Ricinus communis)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Dicots (Class Magnoliopsida)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Willows (Genus Salix)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Poplars, Cottonwoods, and Aspens (Genus Populus)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

River Redgum (Eucalyptus camaldulensis)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Barleys (Genus Hordeum)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Oaks (Genus Quercus)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Wall Barley (Hordeum murinum)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Distant Phacelia (Phacelia distans)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Mallows (Genus Malva)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

River Redgum (Eucalyptus camaldulensis)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

American Century Plant (Agave americana)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Queen Palm (Syagrus romanzoffiana)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Palms (Family Arecaceae)

Observer

ericandersen

Date

March 13, 2013

Photos / Sounds

What

Mule Fat (Baccharis salicifolia)

Observer

ericandersen

Date

March 13, 2013

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