scroll to top
Stuck on your essay?
Get ideas from this essay and see how your work stacks up
Word Count: 399
Lepus americanus Lepus americanus snowshoe hare belongs to the Phylum Chordata Class Vertebrata and Order Mammalia Lepus americanus is common to the northern boreal forests of North America extending south into higher elevations of the Rocky and Appalachian Mountains Its main diet consists of plant shrubs in summer and in winter forage on ground vegetation by digging feeding craters into the ground Gilbert 1990 Experiments conducted by Krebs et al 1986 set out to determine responses of Lepus americanus to extra natural food supplemented during 1981 to 1984 in the period of a decline phase during the ten-year cycle It is not known if decline phase is driven by winter food shortage The experiment consisted of one experimental and two control grids set up to determine differences between survival growth and reproduction in areas supplied with freshly cut white spruce Picea glauca and aspen Populus tremuloides Similar trends were obtained in all three areas population size survivorship reproduction and growth Between critical winters of 1981-1982 the experimental grid area lost 77 of its population as compared to 79 and 96 loss for the control grids Determining the survival rates the authors used mark-recapture techniques it was found that probabilities for survivorship in experimental grid 079010 were similar to that of control grids 071007 056007 Results yielded that extra food intake and cover provided from branches may have not been helpful in increasing survivorship No differences were measured in reproduction of percentage in adult females caught lactating between control and experimental grids Based on experiments conducted by Keith and Windberg 1978 we should expect reduced weight loss during the winter months if natural feeding was effective in experimental grid Results gathered based on growth rates and size yield a reduced weight loss on experimental grid in 1981-1982 Experimental -004013 Controls -028007 -011030 Such data is not significant to rule that supplemented food is effective There is no indication to that decline phase of
@Kibin is a lifesaver for my essay right now!!
- Sandra Slivka, student @ UC Berkeley
Wow, this is the best essay help I've ever received!
- Camvu Pham, student @ U of M
If I'd known about @Kibin in college, I would have gotten much more sleep
- Jen Soust, alumni @ UCLA