Life and Death of a Barrier Island -- Vocabulary List



Barrier Island - tidewater landforms that protect the mainland from the effects of sea storms, characterized by an ever-changing beach, sand dunes, maritime forest and salt marsh.

Beach – a sandy shore

Detritus - disintegrated matter made up of 95% dead Spartina grass, 5% algae, bacteria, fungi, and animal wastes.

Dichotomous Key – a key for identification that uses sets of statements that are divided into 2 usually contradictory parts.

Dune – a ridge of wind-blown sand.

Marsh – a low-lying wetland affected by the tides.

Shoals – shallow areas located offshore where eroded sand builds up.

Maritime Forest – a forest located by or near the sea.

Erosion – the gradual eating into or wearing away of soil or sand.

Accretion – the gradual build-up of soil or sand.

Species – the basic unit of classification, made up of a population of closely related or similar organisms.

Adaptation – any feature of a living organism that allows it to deal with its environment efficiently, and so improves its chance of survival.

Habitat – a place or a kind of place where a plant or animal naturally occurs.

Intertidal Zone – the area on the beach located between the high and low tide lines.

Alongshore Current – a current that flows along the shore.

Niche – the place occupied by a species in its ecosystem – where it lives, what it eats, its foraging route, season of activity.

Litter- carelessly discarded waste.

Producer – an organism that synthesizes its own food.

Consumer – an organism that cannot synthesize its own food and must obtain it from another source.

Decomposer – an organism that synthesizes food by breaking down another organism.

Predator – an animal that preys upon another.

Prey – an animal hunted or caught for food.

Competition – contest between living organisms to get essential commodities such as space, food or light, which are in limited supply.

Succession – the orderly and progressive replacement of one ecosystem by another until a stable community occupies the area.

Quadrat – a square of habitat chosen at random to study the composition of vegetation and animal life in a survey of the selected area.

Symbiosis – different species living together for the benefit of one or both.

Food chain – the chain of events where a plant is eaten by an herbivore, the herbivore is eaten by a carnivore and so on..

Food web – a network combining several food chains, where one plant or animal may be eaten by a range of consumers.

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