Interspecific Competition Quiz

• Where was the study conducted? 

• George Washington Memorial Park

• Font Hill Nature Preserve

• Rocklands Bird Sanctuary

• Royal Palm Nature Preserve

• Which of the 3 additional conditions for interspecific competition is NOT addressed in the study? 

• Resource use of one species must affect resource use of another

• The fitness of one species must be reduced by the presence of another

• The distribution or abundance of one species is reduced by the presence of another

• Which of the following is the correct definition of INTRAspecific competition? 

• Competition between two organisms of different species

• Competition between two organisms of the same species

Were Redstarts ever seen chasing Yellow Warblers?

• Yes

• No

• Which of the following is NOT a stated possible reason that yearling Redstarts experience fewer effects of interspecific competition?

• Adult male redstarts defend higher quality territories that have more resources and subsequently experience more Yellow Warbler aggression

• Their plumage, which indicates their subordinate/immature status, leads to less targeting by both adult redstarts and yellow warblers

• They are smaller and faster than their adult counterparts and are better able to escape acts of aggression from Yellow Warblers

• Which of the following groups of organisms may have benefited from interspecific competition between the Yellow Warblers and Redstarts? 

• Yearling male redstarts

• Yellow Warblers

• Yearling female redstarts

• Adult male redstarts

• What is the best reason for why Yellow Warblers and American Redstarts were the focus of this study? 

• They are the most common and territorial species in the mangrove forests; they exhibit high rates interspecific aggression

• The two species are easier to track than the other species in the forest, such as the white-eyed Vireo and the Prairie Warbler

• Both species defend large territories

• Neither species reproduce during the winter season, so the researchers can focus on other aspects of their fitness

Male redstarts tend to obtain better habitats than female redstarts or yearlings. Why are individuals that inhabit mangrove habitats better off than logwood inhabitants? (multiple correct answers)

• • They are in better physical condition and lose less mass over the course of the winter season 

• • They depart earlier on spring migration 

• • They return at a higher rate in following winters

• • They have a higher annual survival rate

• Why can migrants and residents of the forest survive in the winter with increased competition when there is less food of poorer quality? (2 answers) 

• The competition motivates the birds to find more food so they can show off

• The temporary nature of migrant resident competition; adaptability and resilience to the resource limitations

• Molting and breeding don't take place in the winter, and these activities require a lot of energy

• Other organisms in the forest that compete for the same resources either migrate to a different forest or go into hibernation in the winter

Which program did the researchers use to analyze (some of) their data?

• Excel

• Google sheets

• R

• By hand :(