Moose and Wolf populations 1995-2005. (Ecology)

FratBro23
Category:
Biology
Price: $5 USD

Question description

Researchers monitor, track, and count wolves and moose, and they collect parts of car- casses and fecal pellets for laboratory analysis. Carcasses provide information about the age, cause of death, and health characteristics of the animals. Biotic and abiotic data describing limiting factors are included in the population analyses.

Table 2 Table 3

Moose and Wolf Populations 1995–2005

Year

Wolves

Moose

Year

Wolves

Moose

1995

16

2422

2001

19

900

1996

22

1163

2002

17

1100

1997

24

500

2003

19

900

1998

14

699

2004

29

750

1999

25

750

2005

30

540

2000

29

850

Abiotic and Biotic Events 2002–2005

Abiotic

Biotic

  • severe winters

  • snow depth

    above average

  • thaw/freeze

    created crust on

    top of snow

  • springs and

    autumns warmer than normal

  • moosemarrow-fat levels low

  • balsam fir sources decreasing

  • wolfpopulationincreasing

  • large increase in winter

    moose ticks due to warm

    springs and autumns

  • current moose population

    predominantly old

2. Infer The greatest decline on record in the moose population occurred in 1996 and 1997. Was the limiting factor that probably caused the decline density dependent or density independent? What was the limiting factor? Explain.

3. Explain how three of these events are limiting factors that might have contributed to the continuing decline of the moose population.

4. Which of the limiting factors listed in Table 3 is probably an indirect effect of human activity? Explain. 


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