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Food preferences by spring migrating Pink-footed geese (Anser brachyryhnchus) in Central Norway

Ødegaard, Pål-Iver
Master thesis
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URI
http://hdl.handle.net/11250/132253
Date
2013
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  • Master i anvendt økologi / Master of applied ecology MAOK [84]
Abstract
The spring migrating Svalbard population of Pink

-

footed geese

(Anser brachyrhynchus)

stages in Central

-

Norway

from mid

-

April to mid

-

May. They feed on agriculture fields

mainly on a menu of grain and grass. These nutrients do they find in fields with stubble,

sown barley and on grassland.

In the present

study it is hypothesized that

P

ink

-

footed geese adapt to the

available food

resources depending on the availability. It is predicted that there may be yearly variances in

the availability and that the preferences will depend on the time in the season, the location

and seasonal climatic development.

The results from

goose

registrations

in 2008 and 2009

show a difference between the

years

in preferences for

food

. This was

basically

caused by the harvest success of

the

previous year, which

depend

s

on

the current

climate

condition

. The results

of the pre

sent

study

also indicate differences in climate within the study area

, determining the

choices

of

food source by the

P

ink

-

footed geese

It is

conclude

d in this study

that

P

ink

-

footed geese have different

food

-

preference

s

determined by the climatic situation

s. A more detailed study is

recommend

ed

in order

to

fully understand the dynamic

s

of spring staging

P

ink

-

footed geese

staging

in the cultivated

landscape of Central

-

Norway
Description
Master in applied ecology. Evenstad 2013

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