WATER QUALITY? ASK THE BUGS! -...
Transcript of WATER QUALITY? ASK THE BUGS! -...
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WATER QUALITY?ASK THE BUGS!
PRESENTER: AUDREY HAERLE
ENVIRONMENTAL SCIENTIST, THE LIMTIACO CONSULTING GROUP
PRESIDENT, HAWAII WATER ENVIRONMENT ASSOCIATION
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https://pmm.nasa.gov/education/images/usgs-water-cycle-diagram
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THE IMPORTANCE OF STREAMS
• PREVENT FLOODS
• PROVIDE HABITAT FOR PLANTS AND ANIMALS
• PROVIDE WATER AND FOOD
• IRRIGATION
• TRANSPORT
• RECREATION
• AESTHETIC BEAUTY
• TOURISM
• OTHER ECONOMIC BENEFITS
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HAWAII'S STREAMS ARE UNIQUE
• AFFECTED BY HAWAII'S VOLCANIC, ISLAND TOPOGRAPHY
• STEEP WATERSHEDS DUE TO "YOUNG" MOUNTAINS
• SMALL AND SHORT COMPARED TO MANY OF THE LARGER STREAMS ON THE CONTINENTAL
US, DUE TO SMALL LAND AREA
• MORE WATERFALLS THAN MOST AREAS OF THE WORLD
• FREQUENT FLASH FLOODING
• UNIQUE ENVIRONMENT HAS RESULTED IN ENDEMIC SPECIES (ONLY FOUND HERE).
• HAWAIIAN STREAMS HAVE ONLY 5 NATIVE SPECIES OF FISHES (FOUR ENDEMIC, ONE INDIGENOUS,
I.E., NATIVE BUT FOUND ELSEWHERE TOO), TWO SPECIES OF CRUSTACEAN (ALL ENDEMIC) AND
THREE SPECIES OF MOLLUSK (ALL ENDEMIC).
‘O‘opu nōpili
http://dlnr.hawaii.gov/dar/habitat/streams/about-streams/
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ENVIRONMENTAL WATER QUALITY IN STREAMS
• DETERMINED BY VARIOUS FACTORS:• CHEMICAL PROPERTIES:
• TEMPERATUE• PH• DISSOLVED OXYGEN• NUTRIENTS ETC.
• PHYSICAL PROPERTIES:• STRAIGHT VS. MEANDERING• WIDTH AND DEPTH• BOTTOM SUBSTRATE (ROCKS, SEDIMENT OR CONCRETE?)
• BIOLOGICAL PROPERTIES:• PLANTS (NATIVE VS. INVASIVE)• ANIMALS (FISH, INSECTS, ZOOPLANKTON)
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ENVIRONMENTAL WATER QUALITY DEFINITIONSAQUATIC MACROINVERTEBRATES
• A GROUP OF ORGANISMS FOUND IN OR NEAR WATER THAT ARE LARGE ENOUGH TO BE SEEN WITH THE NAKED EYE, YET LACK A BACKBONE. THESE INCLUDE THE LARVAE OF DRAGONFLIES, MOSQUITOES, ETC.
BENTHIC
• THAT WHICH CAN BE FOUND AT THE BOTTOM OF A BODY OF WATER OR IN THE DEPTHS OF THE OCEAN.
BIOINDICATOR
• AN ORGANISM WHOSE PRESENCE IN AN ECOSYSTEM IS AN INDICATION OF THE ECOSYSTEM'S HEALTH
RAPID BIOASSESSMENT PROTOCOLS
• A STANDARDIZED SET OF RULES OR INSTRUCTIONS THAT PROVIDE DETAILED INFORMATION ON COLLECTING SPECIMENS FOR BIOLOGICAL SURVEYS AND OTHER DIRECT MEASUREMENTS OF LIFE IN SURFACE WATERS.
POLLUTION TOLERANCE INDEX
• A CLASSIFICATION SYSTEM USED TO DETERMINE THE QUALITY OF WATER WITHIN A NATURAL SYSTEM.
• MACROINVERTEBRATES ARE CLASSIFIED AS POLLUTION TOLERANT, MODERATELY POLLUTION TOLERANT AND POLLUTION INTOLERANT.
• CLASSIFYING COLLECTED SPECIMENS BY THEIR POLLUTION TOLERANCE GIVES A ROUGH BIO-INDICATOR OF THE WATER QUALITY.
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WHAT CAN DAMAGE STREAM HEALTH?
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WHAT CAN DAMAGE STREAM HEALTH?
http://bwsc.org/COMMUNITY/SWPP/SW_main.asp