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21 Cards in this Set
- Front
- Back
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Heal the bay |
dedicated to making southern california coastal waters and watershed (including stanta monica Bay), safe healthy, and clean |
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History |
-sick beachgoers and marine life -research: dead zones at Hyperion, -Action: pressured EPA to reovek waiver of CWA; watchdog group to make sure work was done. q |
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Hyperion Today |
-95% reduction in solid effluent released into bay -fish no longer have fin rot and tumors -marine mammals return -dead zones recolonized at end of effluent pipes
>education and outrach > community action >science, reserach >advocacy |
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What is watershed? |
-Area of land where all of water is under it or drains off of it goes into same place
-UCLA in santa monica bay watershed |
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Stream Team |
-determine and promote environmmnetal health of watershed -monitor program -promote stewardship -train volunteers -cost effective |
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Malibu Creek Watershed |
-part of Santa Monica Bay watershed -second largest watershed draining to santa monica bya. less than 25% devleoped |
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Stream ecosystems |
-threatened in southern california -estimated 90-95% of SoCal riparian habitat has been destroyed/degraded -home to many threatened and endangered species
e.g. La river, ballona wetlands |
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more about stream ecosystems |
-provide critical habitat for species -provide ecosystem services > reduce flooding >clean water -recreation
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Native Amphibains |
-california newt (terrestrial and aquatic, long lived) -poisonous: tetrodotoxin TTX -suffered population declines in SOCal due to habitat loss, alteration, invasive species
California red legged frog -federally endangedred -reintroduced to new locations |
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Threats to Streams |
-invasive species -pollutants -runoff -loss of habitat -channelization |
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invasive species |
-mosquitofish -new zealand mud snail -bull frogs -crayfish |
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Why we care about water quality in streams |
water quality affects humans -recreation: swimming, aesthetics -ecosystem services: food, flooding -impacts animals and plants that live in streams -drains to oceans |
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Water quality |
-clean water act (1972): restore and maintain chemical, physical, and biological integrity of nation's waters to protect beneficial uses >commercial, sport fishing >recreational body contact >wildlife habitat >agricultural water supply
if standards not met, considered IMPARIED and placed on list of impaired water bodies |
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If your water body is impaired |
-plan needs to be created to reduce pollution that is causing impairment -plan is called TOTAL MAXIMUM DAILY LOAD (TDML): amount of particular pollutant that a water body an handle and still support its designated benfiicial uses. |
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What impacts water quality? |
-land use > devfleopment-runoff >agirculture, equestrian facilities -spills/leaks >sewage lines, spetic tanks -wastewater treatment plant >tapia Water Reclamation Facility- discharges to Malibu Creek |
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how does development affect watersheds |
-pervious vs. impervious surfaceas -urban runoff |
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What is difference between storm drain and sewer system |
-sewer system goest through treatment facitlity \ -storm drain literally goest straight to ocean untreated. |
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Beach water quality |
-surfrider beach is at terminus of malibu creek watershed
-heal the bay conducts annual biological assessments of streams in the Malibu creek watershed > physical habitat >benthic macroinvertebrate sampling |
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Benthic Macroinvertebrates |
-popular and widely used method of bioassessment |
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bioassessment monitoring |
-use benthic macroinvertebnrate data to generate index of biogical integrity (IBI) southern california coastal IBI based on 7 metrics, score of 39 or lower indicates BIOLOGICAL IMPAIRMENT
IBI decreases from upper to lower watershed IBI influenced by percent Impervious area |
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Policy Outcomes: TDML |
-benthic macroinvertebrate TMDL to address biological impairments in Malibu Creek and tributaries -data integral in TDML which determiend that nutrients and sediment were cause of biological impairments and set lower limits for both |
