St Stephen's School would like to acknowledge the contribution of
a Teacher Librarian at the Duncraig secondary campus from 2008 - 2020, and the original author of this guide.
This guide is now being maintained by another staff member.
Western Australia's Marine Environments - A Voyage of Discovery
From the depths of Ningaloo Marine Park to the remarkable and little known fringing reefs of the Kimberley Browse Marine Region; from the discovery of coral spawning to new species which hold potential cures for illnesses - marine scientists share their passion for the ocean and their quest to understand its secrets.
SOURCE: ClickView, Western Australia's Marine Environments - A Voyage of Discovery (2012) Rating: E, Duration: 34:23, URL: https://clickv.ie/w/Ynln
Use the key words highlighted below to create headings for your research notes, whether you choose to create notes by hand or digitally.
Task 2: Marine Ecosystems Extended Response
You will research and become an expert on one of Western Australia’s main marine ecosystems:
Abiotic factors: non-living characteristics of a habitat or ecosystem that affect organisms' life processes.
Adaptation: a genetically-based body feature or behavior that allows an organism to be better suited to its environment.
Anadromous: fish that live their adult lives in the ocean but move into freshwater streams to reproduce or spawn (for example: salmon).
Autotrophs: an organism that makes its own food from light energy or chemical energy without eating. Most green plants, many protists and most bacteria are autotrophs. Autotrophs are the base of the food chain and can also be called producers.
Benthos: bottom-dwelling flora and fauna; from tiniest microbenthos (bacteria) to medium-sized meiobenthos (nematode worms) to the highly visible macrobenthos (clams, polychaete worms).
Brackish: slightly salty water with a salinity between 0.5 ppt and 32 ppt.
Biotic factors: relationships among organisms that affect their survival.
Commensalism: form of relationship in which one species gains from the interaction and the other is neither positively nor negatively affected.
Consumer: individual that eats other organisms to obtain energy rather than producing its food through photosynthesis or chemosynthesis.
Decomposer: an organism that feeds on and breaks down dead plant or animal matter, thus making organic nutrients available to the ecosystem.
Diel: the daily cycle; a 24-hour period.
Groundwater: water contained below ground in soil and rock.
High marsh: the area of the marsh flooded infrequently by the high tides associated with new and full moon.
Hypoxia (hypoxic): very low oxygen levels.
Intertidal: estuary habitat flooded by high tide waters only.
Marshes: soft wet land usually characterized by grasses.
Migration (migratory): the movement of living organisms from one biome to another, commonly with changing seasons.
Mobile epibenthos: bottom-dwelling animals that move on top of sediments: crabs, shrimp, snails, amphipods, isopods.
Mudflat: part of benthic (bottom) zone exposed at low tide and comprised of extremely fine sediments.
Mutualism: form of relationship in which both species involved gain from the interaction (example: lichen).