Why Animals Die Is Vital For Understand The Population

Faith and Surovell referenced many figures and extinction mechanism studies employed in previous influential papers. In Multispecies Overkill Simulation of the End-Pleistocene Megafaunal Mass Extinction, Alroy creates a computer simulation modeling human permeation and large mammal population interactions by assuming slow human expansion rates, random hunting patterns, and very low hunting efficiency (Alroy, 2001). The model closely matched empirical extinction rates as well as population densities for humans, animals, and their overlapping regions (Alroy, 2001). Faith and Surovell references this paper's overkill mechanism as a possible explanation for the "abrupt and catastrophic" extinction. In Late Pleistocene Mammalian Extinctions in North-America - Taxonomy, Chronology, and Explanations, Grayson refutes the overkill method by stating only "two of the extinct genera" can be

In recent years, the Clovis migration model has been challenged by a wide range of discoveries (Hadingham, E. America's First Immigrants). For one, Hadingham says that, “the latest studies show that the ice-free corridor

Migration: Animals migrate during certain times of the year, for reasons like food, temperature, or breeding. One example of migration is the migration of Canadian Geese. They migrate to the south in large numbers, for the warmer climate. Once it gets warmer, they begin returning to colder

Native bird species will be forced to fly further north during migrating season, causing problems with repopulating.3

The existence of the Florida panther is threatened by extinction processes because their current habitat is simply too small and fragmented for

the landscape and the heat to their advantage. As a result, migrants often die in in horrific ways in the backcountry. The anthropologist Jason de Leon,

The audience is left horrified by such glaring numbers, and now understands why there needs to be more enforcement - to eliminate the many deaths of our precious birds. By citing evidence, the author is able to establish that his concerns are true, strengthening his line of argumentation in the

The adaptability and evolutionary history of Raptors is remarkable and a learning opportunity for humans.

A total of 116 subjects monitored by weekly airplane transects from February 2002 to March 2008 generated data for mortality due to predators, disease, or natural causes. Independent temperature data of daily maximum and minimums corroborated closely with NOAA temperature data throughout November 2002 to February 2008. Categorizing temperature data into four seasonal groups, a metric heat stress index (HSI) reflected variance in temperature, which correlates alongside increased energy expenditure for moose to maintain thermal equilibrium. Calculation of survival using non-parametric estimation partitioned 6 annual and 24 seasonal periods for regression analysis between temperature and survival. Dependent variables for seasonal survival and independent variables for HSI calibrated a linear model to predict magnitude of temperature variance on survival.

The American Crow (Corvus brachyrhynchos) is a large bird found throughout the United States and parts of North America. All species are “two-legged, thick-necked birds with heavy, straight bills” (Vuilleumier 465). The American Crow is the largest crow in North America and is most well known for its call. Their caw is “lower than other subspecies” (465). Distribution of the American Crow differs from season to season. In the summer during breeding season, they can travel as far as the northern territories of Canada. In the fall, they are likely to spend their time in the lower 48 states and migrate as far south as the Mexico-United States border.

An example of a pro with assisted migration involves a Mexican pine species, Pinus leiophylla and its relocation to a habitat that involved changes to the altitude in anticipation of the expected shift in altitudinal range due to climate change. “Scientists predict an upward shift in altitude of 300m is required to compensate for the expected 1.5C increase in average temperature” (Castellanos-Acuña, Lindig-Cisneros, & Sáenz-Romero, 2015). The research demonstrates that the Pinus leiophylla exhibited similar growths at all altitudes and would not result in a severe maladaptation, allowing survival at this altitude.

Countless lives locked away in cages and forgotten about have overwhelmed our society, it has left blood stains on our history as a species and if history has taught us anything, it’s that we have a choice to change our ways of adjusting to situations. A war which was fought in pursuit of ending such criminal means, yet we as human beings do little to nothing to end the horrific crimes of animal deaths in shelters. It is no secret that this world has become infused with problems that have extended from one side of the globe to the other. Amongst these problems lies a terrible truth: nearly every year, sums of almost eight million cats and dogs have been placed in shelters around the world. Out of these vast numbers, half will be

Environmental factors such as the decrease in day length, cooler temperature and aging milkweed trigger the monarch to begin its migration, although the precise environmental trigger that initiates migration is not well understood. When spring arrives, they become reproductively active, mate and leave Mexico to re-migrate north. During the remigration northward the females lay fertilized eggs on newly emerged milkweeds in the southern parts of the United States (Reppert and others 2010). Their offspring’s will also continue the migration up northward to repopulate the northern section of the monarch habitat range. Even though the monarch migration is repetitive and cyclic in nature, their migration cycle is multigenerational. It takes about two generations of spring and summer butterflies that are following the progressive northward emergence of milkweeds to repopulate the entire range and therefore completing the migration cycle (Reppert and others 2010).

There have been five well known extinctions on this earth. The one most well known is the mass extinction that ended the dinosaurs. Mass extinction is often described as the elimination of a large number of species in a short period of time. Despite what many think, the elimination of species is almost commonplace at this point. The Earth is currently in the middle of a sixth mass extinction, and it’s been caused by the human race.

Fun fact:There is also different types of migration. “Economic migration” is when people are migrating to a country that has a higher percent rate of getting a job. “Social migration” is when you are migrating to start a new life or to live closer to your family. “Political migration” is when people are moving to escape corrupted government or civil war. “Environmental migration” is when natural disasters destroy homes and people try to start a new life in a new country.