Archipelagos Institute of Marine Conservation

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Presentation transcript:

Archipelagos Institute of Marine Conservation Michael Wiest and Regina Wang

Archipelagos: - marine conservation institute on a Greek island - about 30 interns at a time from many different countries

What we did in Greece: -Surveys (terrestrial & marine) -Necropsy (golden jackal) -Jackal surveys (Emily’s work) -Wildlife Library Main Project: -Microplastics!

Terrestrial Surveys: Chameleons!

And: hedgehogs and terrapins

Marine surveys: -Underwater visual census

Awesome Cuttlefish!

And finally: MICROPLASTICS!!!

What are microplastics? Plastic fragments <5mm (>500µm) Typically: polypropylene, polyethylene, polystyrene, polyethylene terephthalate, polyvinyl chloride plastic resin pellets, plastic products, plastic product fragments, fibres, rubber, Styrofoam, plastic sheets and sponges

Source and prevalence Macroplastics: fishing gear, industrial production, littering, and waste effluent Microplastics: result from photo, thermo-oxidative, bio, and physical degradation. Chemicals contain them. Shipping Found on all 6 continents Accumulate in high pressure areas (gyres)

Broader Implications Plastics resist biodegradation due to short biological timespan Can accumulate in organisms Microplastics accumulate Persistent Organic Pollutants (polychlorinated biphenyl, Dichlorodiphenyldichloroethylene (DDT), Biphenol A)

Archipelagos past research 18 H. forskali and 4 H. tubulosa sampled: 24 hour sampling period Plastics found in all samples (max 32 fibres) 114 beach sites in 2009, 49 sites in 2011. Plastics at all sites Max concentration was 112 fibres/sample

Methodology Sediment: Holothurians: Add saturated NaCl soln. Agitate and let settle Filter and analyze through microscope. Holothurians: Keep in filtered sea water 24 hrs. Return to sea. Agitate and filter sea water. Analyze

Ongoing research Altered methodology for mass measurements Take sediment samples at depth rather than distance from shore. Added sampling in proximity of Holothuria for concentration comparison Sampling sites on Samos and six sites on Oinousses Regina analyzed fish guts to study travel through trophic levels.

Sediment results Total plastics at depth Average plastics at depth Fibers Fibers

Holothuria results Fibers/gram sediment

Concentration difference (Holothuria)

Some pictures of fun times!

Some pictures of fun times!

Some pictures of fun times!

Some pictures of fun times!