Our Project In Hawai i s Intertidal. Picture by Emily Bayne
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1 Our Project In Hawai i s Intertidal Picture by Emily Bayne
2 Picture by Joanna Philippoff Picture by Ross Langston Opihi vs. OPIHI
3 Intertidal = Ecological Zone Image by Byron Inouye
4 High Tide Bay of Fundy, Canada Shell Beach Sonoma, California Images courtesy of Dylan Kereluk, Wikimedia Commons ng-tide-project/ Images by Alyssa Gundersen Low Tide
5 Tidal Range in Hawai i ~ 1 m (3 ft) High Tide Low Tide Ma ili Point, O ahu Images by Alyssa Gundersen
6 Tidal Range in Hawai i ~ 1 m (3 ft) Intertidal Intertidal Low Tide at Ewa Beach, O ahu y/?cparticle=2 Photo: Josh Fletcher
7 Some intertidal areas have zonation Diamond Head, O ahu Laurencia mcdermidiae Sargassum sp. Off shore Padina sp. Siphonaria normalis Nerita picea On shore Images by T. Erin Cox
8 Unique Ecosystem = Unique Organisms Pictures by OPIHI
9 What factors determine which organisms live at an intertidal site? Sandy Beach Wai ōpae Kalaupapa Sand Island Makapu u Turtle Bay ools-and-waimanalo-may / Pictures by OPIHI
10 Factors that structure the intertidal Abiotic Factors Tide (height, frequency) Waves & currents Sunlight (quantity & quality) Temperature (air and sea) Shoreline shape & substrate (bottom) type Freshwater (rainfall patterns & runoff) Water chemistry (nutrients, salinity, turbidity) Biotic Factors Predation Competition Organism range (dispersal & colonization) Pictures by T. Erin Cox
11 Cultural Importance of Intertidal Limu manauea Graciliaria cornopifolia Limu kala Sargassum aquifolium marinelifephotography.com Hawaiian Culinary, Medicinal, & Spiritual Practices Black-foot opihi Cellena exarata Kupe e shell lei Nerita polita
12 Ecological Importance of Intertidal Intertidal Coral Reef Picture by Ross Langston Nursery
13 Intertidal at Base of Watershed Intertidal is at base of watershed; affected by everything upstream Watershed: Area of land that collects rainwater into a common outlet (e.g., river, ocean) Ahupua a: Hawaiian land division (tracks of land from the mountains to the sea) that has historical & spiritual significance Illustration by Mele McPherson. Image courtesy of Hale Kuamo o, The Hawaiian Language Center, University of Hawai i at Hilo.
14 Human Threats to Intertidal Development Wikipedia Commons KeithH Species Introduction (may become invasive) Overharvesting 2-mouthwatering-tastes-of-maui/ Climate Change marinelifephotography.comhttp://mauitime.com/news/politics/state-of-hawaii-signs-onto-maj uro-declaration-on-climate-change/
15 Summary: Hawai i s Intertidal Culturally, economically, & ecologically important At base of watershed Affected by both land & sea issues Has not been well-studied in Hawai i Small tidal range Seasonal waves Small organisms (compared to areas like CA and nearby HI coral reef) But easy to get to for students! Image by T. Erin Cox
16 OPIHI Goals OPIHI is a real scientific research project to describe Hawai i s rocky intertidal Scientists need student help to collect information about this area Scientific Goals: Re-survey sites from 10 years ago Expand to new areas Pictures by OPIHI
17 OPIHI Locations as of Spring 2016 Sand Island (Cox. et al., 2013)
18 Our Site-Turtle Bay
19 In Class Learn methods for studying the abundance of organisms water quality Practice identifying intertidal organisms Images by A. Faucci, K. Longenecker, J. Philippoff, K. Seraphin
20 In the Field Follow OPIHI protocol to collect data that can be shared with other students and scientists Images by T. Erin Cox, K. Seraphin, R. Langston & OPIHI
21 Why is water quality important? Waipuilani Beach, Maui Pelekane Bay, Hawai i Images from presentations by T. Weigner & H. Spalding
22 Water quality is important Human health Ecosystem health Economies Culture OPIHI Focuses on: Temperature Salinity Dissolved Oxygen Turbidity The red algae Kappaphycus and Eucheuma overgrowing coral in Kane ohe Bay Images from presentation H. Spalding
23 Temperature: Measure of the average kinetic energy of molecules What factors might affect temperature in the intertidal? Image from K. Seraphin
24 Salinity: Measure of the amount of dissolved salt in water What factors might affect salinity in the intertidal? Image from K. Seraphin
25 Dissolved Oxygen: Oxygen gas dissolved in water What factors might affect dissolved oxygen in the intertidal? Image from K. Seraphin
26 Turbidity: A measure of the clarity of cloudiness of the water What factors might affect turbidity in the intertidal? Images from K. Seraphin
27 Measuring Water Quality at your Intertidal Site Where you do think levels will be high and low for each of these measurements? How will you collect data? Make sure you know how to use the tools you will be using in the field.
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