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Herpetology:

What is a food chain/web? What role do herpetofauna play in food chains/webs? Provide an example of a specific herp of such a relationship?

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Nelly Stracke
Nelly StrackeLv2
28 Sep 2019

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Related questions

Please respond to the following questions throughout the week.

Provide an example of a food chain in the area where you live.

Humans are parts of food chains and food webs, too. Where on a food web would you typically find humans (near the bottom with the producers, at the top with carnivores, or somewhere in between)? Explain.

What are some advantages of being part of a food web rather than a food chain?

For Questions 4รขย€ย“6, use the following food web for Lake Michigan:

Lake Michigan Food Web. (2016). Retrieved fromhttps://www.glerl.noaa.gov//pubs/brochures/foodweb/LMfoodweb.pdf

To see this PDF, you will need to download the free Adobe Reader.

In the Lake Michigan food web, is it possible to identify the most important producer? Why or why not?

Provide at least two types of impacts that humans could have on this food web.

Read the description of the sea lamprey on page 2 of the food web. This species is described as non-native. They reached the lake through canals and locks built in the 1800s.

What challenges could occur within a food web when a new predator like this is introduced into an ecosystem?

Do you think steps should be taken to eradicate this species from the food web? Explain why or why not? If so, what steps can be implemented?

discussed food webs and food chains. Please compare AND contrast the two. Using examples from Hawk Mountain, please Provide and example of a feed web. To do this I want you to first pick a habitat at Hawk Mountain and then write it down. Then I want you to pick an organism and write it down. Then I want you to list 5 organisms that might eat this organism and list 5 organisms that might be eaten by this organism. Then what I want you to do is to pick a second habitat that at Hawk Mountain and describe it. Compare and contrast these two habitats and discuss how your food web might be different in this new habitat.

Food web studies have come a long way since the early 1900s when ecologists began developing these tools to understand species interactions and ecosystem level processes (2-5). From that point forward, food web ecology grew rapidly developing into its own sophisticated, technical sub-discipline of ecology (2-5). Tools involved in tracking species interactions, as well as the quantitative tools to analyze food webs, improved and diversified (6-11). These technological innovations were accompanied by the construction of several high quality food webs from diverse biomes (7). The wide diversity of food webs provided the opportunity to explore some of the fundamental properties pertaining to the structure and function of ecosystems (7). However, there is still much about food webs that remains unexplored, particularly investigations of understudied taxonomic groups like the parasites that are typically not included or aggregated in food webs (12-17). Here you have the opportunity to investigate a food web of your choice and explore some of the implications related to food web construction and analysis.

Conduct a literature search and find a peer-reviewed scientific article describing an original, empirical food web and answer the following questions.

Questions

What biome and scale does the food web represent? For example, was it a lake, a pond, a desert? How was the extent of the food web determined? Was it based on the physical characteristics, biological community or arbitrarily by the researchers based on their specific question?

What taxonomic groups were included in the food web? What level of taxonomic identification (species, family, order, etc.) was used for those groups? Was it the same for all or did it vary?

What groups were excluded or aggregated in the food web? What are some of the characteristics of these groups? How might the characteristics of these organisms contribute to this issue?

How did the researchers determine the types of interactions taking place in their food web? What general approaches were used and how did this differ among taxonomic groups?

Overall, how might excluding or aggregating different groups have influenced the results of the study? How might the researchers address these issues?

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