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02 Chesapeake Bay Food Web Capture Sheet.pdf - Name: _...

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Name: ___________________________________________________ Date: __________ Period: _________Chesapeake Bay Food Web Capture SheetPart 1: Analyzing the PhenomenaExamine the two food webs for the Chesapeake Bay ((. The web titled “Before Large Scale Fishing” represents the timeperiod before the arrival of European settlers and large-scale fishing, approximately 300 years ago (1700s). The web titled“After Large Scale Fishing” represents today’s conditions.“Before Large Scale Fishing”“After Large Scale Fishing”Unique Features “Before”Common FeaturesUnique Features “After”Most of the animals were abundantbefore large scale fishingThe interactions were strong andweakEach animal had a interaction withanother animalMost of the animals become rareand extinctMost of the interactions were weakQuestions about “Before”Questions about “After”Why was there a equal amount of strong and weakinteractions?Why did most of the interactions become weak?Why did the animals become rare and extinct?Vocabulary Review:Based on your prior knowledge and the clues in the food web, propose definitions for the following terms:TermProposed DefinitionFood Weba system of interlocking and interdependent food chains.ProducerProducers are organisms that make their own energy from the sun likeplants and algaeConsumerPrimary consumers eat producers, and are herbivores like deer or squirrels.Secondary ConsumerSecondary consumers eat primary consumers and often are carnivores likewolves or cougars.Tertiary Consumera carnivore at the topmost level in a food chain that feeds on othercarnivores; an animal that feeds only on secondary consumers.DecomposersDecomposers are organisms that break down dead they show natural process ofdecomposition1 of 7
Detritusorganic matter produced by the decomposition of organismsPart 2: Digging Deeper - Chesapeake Bay Food Web BEFORE Large-scale Fishing1.Examine the food web before humans lived in the Chesapeake. Notice which species groups are abundant (darkcircles) and which species groups are rare (light circles). Color or check the squares on the chart below to indicatewhich species groups were rare or abundant.

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Term
Spring
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Tags
trophic level, Apex predator

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