Joshua Rabideau 11/10/2016 BIOL 380 – Lab: Monday Black-Capped Chickadee Foraging Habits There are numerous organisms and interactions occurring within any ecosystem. Many times, the interactions between organisms and habitats are based on the energy needs of the organisms. In this experiment, a null hypothesis that the Black-capped Chickadee forages on various trees at random. Upon data analysis of the gathered information, it can be determined that the Black-capped chickadee were not choosing foraging sites at random. The results of a chi square test gave a value of 19,890 which is significantly larger than the 16.812 value needed to void the null hypothesis with six degrees of freedom; the probability that this variation was due to chance is less than .01.
The probability of this is uncertain, as there is a possibility that loggerhead turtles will select different nest sites as warming increases, or rapidly adapt to the changed climate (Deeming and Ferguson 1989). However, a shift in nest site preference is not the most likely option for loggerhead sea turtles, which show strong nest site fidelity. In addition, because nesting females generally return to their natal beaches and there is a low gene flow between nesting assemblages, these populations that are genetically distinct are at risk for extirpation (Ehrhart et al. 2003). Additionally, the potential for loggerheads to choose suitable nest sites is limited by human activity.
Chalfoun, Daniel F. Doak, and Leah H. Yandow to test how different climate and habitat changes affect the American Pika (Chalfoun. Doak, and Yandow). The abundance of the Pika was tested by measuring the scat density in two mountain ranges, the Wind river and Bighorn mountain ranges (Chalfoun. Doak, and Yandow). The 43 sites for sampling contained different forage availability and throughout time, nine different climate changes that aligned with summer heat and winter snowpack temperatures (Chalfoun.
Most populations live in clumps because the resources a species needs vary greatly in availability from place to place, so the species tends to cluster where the resources are available. Second, individuals moving in groups have a better chance of encountering patches or clumps of resources, such as water and vegetation, than they would searching for the resources of their own. Third, living in groups protects some animals from predators. Fourth, hunting in packs gives some predators a better chance of finding and catching prey. Fifth, some species form temporary groups for mating and caring for young.
The separation in gall characteristic in the two biomes is due to different selection systems exerted by natural enemies of the gall fly. Each natural enemy used similar coevolution patterns this predicts that geographic variation in species interactions will lead to opposing selective pressures on interacting species, producing geographic variation in the traits of interacting species (Craig et al. 2007). This study reinforces the idea that gall fly characteristics have many different factors effecting them such as habitat, geography and the predators that they are more likely to encounter in each different biome. Also this shows that natural selection has different roles on the galls depending on the
To where have all the black-footed ferrets disappeared? The black-footed ferrets have been endangered since 1967 in the southwestern corner of North Dakota due to loss of habitat and a depletion of their prime food source. First of all, the prairie dogs and the other animals that lived in their homes were the ferrets prime source of food. Secondly, the ferrets, like many other animals, used the prairie dogs’ burrows as homes.
Tradeoffs are a frequent occurrence in Nature. They describe the compromise between two optimal but frequently incompatible traits for an organism. Andrea Pomeroy and her team applied this concept of tradeoffs to the western sandpipers, Calidris mauri, of British Columbia Canada, with the trade off of their ability to forage for food against the costs of potential predation. The main idea examined by Pomeroy was to study the spatial usage (The measure of how intensely a site is used for foraging by the sandpipers) at Boundary Bay, to determine how the birds chose their stop over sites during migration based on the tradeoffs between food abundance and predation risks.
A. Maryland has fewer trees B. Nevada had more fish C. Maryland had more open waters * D. Nevada has less small animals • Why would the habitats of Maryland and Michigan support more breeding pairs than habitats in other states? A. Grasslands provide homes for large animals. B. Mountains provide fewer places to hunt. C. Large lakes and rivers provide food. * D. Croplands provide grain for food.
There was silence, then… BOOM! My father and I finally shot the antelope that cost us day's of determination and perseverance. It took four days of sneaking through bushes, trees and rocks jutting into our skin, hiking around for hours trying to find herds of antelope, and consistently calling, with the intentions to find something, yet failing around every turn. This brutal hunt wasn’t for nothing though, in fact, let me introduce the story that changed my life forever. Welcome to the great antelope hunt.
The United States of America abounds with beautiful scenery, amazing natural resources, and fascinating animals. Each state can boast of its unique natural resources. The state of Alaska provides an abundant habitat for numerous species of mammals, fish, and birds. Many species of mammals reside in Alaska. One is of the bear species, the black bear.
A mutualistic relationship is one in which both organisms benefit. An example of a mutualism relationship is between the Eastern Chipmunk and the Red Oak Tree. The scientific names for the Eastern Chipmunk and the Red Oak Tree are Tamias Striatus and Quercus Rubra. When the chipmunk is in the tree, the tree protects the chipmunk. In return, the chipmunk disperses the tree's seeds.
The European fox was introduced to Australia so that people could hunt foxes. There were no foxes in Australia until their introduction in 1855 by the European settlers. It is estimated that there are about 7.5 million foxes in Australia. Natural habitat: Foxes live in multiple habitats such as our suburbs, lightly wooded areas, forests and deserts. During the day foxes sleep in dens, logs, and other sheltered areas.