Using the information from the exert and figures below, answer the following que
ID: 168354 • Letter: U
Question
Using the information from the exert and figures below, answer the following questions: The effects of climate forcing on primary and secondary production of the short austral food webs may be integrated at higher levels thus amplified in top-level predators such as This has led to a strong interest in studying Antarctic and sub-Antarctic predators (especially penguins, which are of the Southern Ocean ecosystem) as sensitive indicators of environmental changes''. understand how variability in marine resources affects their demography over the timescale of years investigations of variation in breeding success and survival are and require long-term individual monitoring at the population scale. Most of our present knowledge on the population dynamics of penguins is based on large flipper banding schemes The key advantage is that bands can be identified from a distance, avoiding recapture stress for the birds. King Penguins from a breeding colony on Possession Island, (46 degree 23 degree S. 51 degree 35 E; Crozet archipelago) were monitored from 1998 - 2008 using automatic identification (RFID chips), One hundred birds were randomly sampled in their breeding area and 50 of them fitted were fitted with a metal flipper band. Describe what does Figure 1 shows? Summarize what Figure 2 shows were the results of the study statistically significant? What does Yvon lessthanorequalto Maho's study tell you about the use of bands to mark penguins? Describe how these findings could affect the results of mark-recapture studies that used banding?Explanation / Answer
10a.Cumulative survival was lower for banded birds than for non banded birds.
10b.There was no significant difference in the population growth rate of the banded as well as the non banded penguins.With Growth rate(0.27±0.01)SST(0.09±0.00)SST2, P<0.001 for both SST and SST2 , the results are not statistically significant.
10c.Though bands can be identified from distance and hence avoids recapture stress but the study suggests that banding impairs survival and reproduction,thereby bringing down population growth rate.
10d.This study would seriously challenge the use of flipper banding in controlling the penguin population dynamics which is itself polemical.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.