Snow Goose Overpopulation Essay

1852 words - 7 pages

The Overpopulation of the Snow Goose in North America
Abstract
     The purpose of this paper is to explore available research on the overpopulation of the Snow Goose on the North American continent. The snow goose has been rising in population since the middle of the century and has been escalating so much it is destroying their natural habitat. Wildlife managers have just recently begun to implement strategies to combat this problem. Mainly through the use of hunters the managers are trying to curb the population growth.
Introduction
     There are three main species of Snow Goose of primary concern. The Lesser Snow Goose (LSGO) is the must abundant and at the same time most troublesome. Ross’ Goose (ROGO) is very similar to the Lesser and can only be distinguished by close observation. Both the Lesser and the Ross nest in salt marshes along Hudson Bay and then migrate down to the gulf coast states such as Texas and Louisiana. Their populations number in the millions. The third sub species is the Greater Snow Goose. They nest in the same marshes as the others except they migrate down the Atlantic Coast into the Carolinas and that vicinity. All three species have exploded in numbers since the 1950’s. Researchers have done a lot of study on the numbers and the degradation but may need to do more studies on the impact to other species and look for other options to control the populations.
Population Trends
     The numbers of all "light" colored geese has been on the rise since data was first collected. The Lesser Snow Goose (LSGO) has drastically increased in number since data was first taken. Numbers range from around 800,000 in 1969 to as many as 6 million in 1996 (CWS 1999). While the Greater Snow Goose (GSGO) has risen in numbers from a few thousand to almost 500,000 (CWS 1999). This brief article did not provide much insight into actual numbers. Abraham and Jeffries in their report dig deeper and provide more significant and detailed population counts. Their numbers add in the Mid-winter index, which is the number of geese counted during mid-winter and referred to as MWI. Their numbers also have a count for Ross’ Goose (ROGO) which primarily flies with the (LSGO) and is very hard to distinguish (Abraham and Jeffries 1998). They too suggest the LSGO population to be around 800,000 in 1969 and in 1994 about 2.4 million. Although it is suggested that the number is low due an undercount during the winter and a more precise count may be taken when nesting in spring. The population of Greater Snow Goose has reached 612,000 from around 50,000 in the mid 1960’s. Ross’ Goose has increased from 8,000 in 1957 to nearly 500,000 in 1995 (Abraham and Jeffries). The Texas Department of Fish and Wildlife states that the population of wintering snow geese has remained constant. They imply this is due to the fact that the geese have spread their winter range into other...

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