GEOG 307 Exam 1 Questions And Answers 2024
Landscape ecology - ANS-" interaction between spatial pattern and ecological process—that is, the
causes and consequences of spatial heterogeneity across a range of scales. "
Landcape - ANS-a mosaic of connected ecosystems
an area that is spatially ...
GEOG 307 Exam 1 Questions And Answers 2024
Landscape ecology - ANS-✔✔" interaction between spatial pattern and ecological process—that is, the
causes and consequences of spatial heterogeneity across a range of scales. "
Landcape - ANS-✔✔a mosaic of connected ecosystems
an area that is spatially heterogenous in at least one factor of interest
What is ecology? - ANS-✔✔The study of interactions between organisms and their environment
land mosaic model - ANS-✔✔in this model, landscapes are viewed as spatially complex, heterogeneous
assemblages of patch types, which can not be simply categorized into discrete elements such as patches,
matrix, and corridors Rather, the landscape is viewed from the perspective of the organism or process of
interest.
mosaic: little pieces of some homogeneous pieces within a matrix that makes up a larger heterogenous
landscape
Scale largely influences our interpretation of the landscape
Generalizes the landscape into 3 components: Patch, corridor, matrix
Makes quantitative analysis and comparison possible
patch - ANS-✔✔surface area that differs from its surroundings in nature or appearance
,corridor - ANS-✔✔strips of natural habitat that connect populations
A relatively narrow strip of a particular type that differs from the areas adjacent on both sides
roads, paths, rivers, game trails, etc
Matrix - ANS-✔✔The background cover type(s) in a landscape, characterized by extensive cover and
high connectivity; not all landscapes have a definable matrix
scale - ANS-✔✔Measure of the grain and extent of your landscape
large scale - ANS-✔✔A relatively small ratio between map units and ground units.
higher resolution
cover smaller regions
grain is fine so you can pick up detail
small scale - ANS-✔✔A map scale ratio in which the ratio of units on the map to units on Earth is quite
small.
usually depict large areas.
coarse resolution
, grain - ANS-✔✔the size of the individual units of observation.
fine: more detail, patches are smaller
course: less detail, patches are larger
extent - ANS-✔✔overall size of the landscape or area encompassed by the observation.
limits the potential of your cover types
broader extent helps us see more detail
Finding the right scale - ANS-✔✔Grain should be 2-5 times smaller than the element of interest
Extent should be 2-5 times larger than the largest patch
gradient analysis - ANS-✔✔Represents causes of vegetation patterns on 2 axes representing controlling
environmental variables
Take complex vegetation patterns, put it on a graph and boil it down to the two most important
environmental variables
Usually uses soil moisture (access to water sources) and elevation (temperature) as the 2 variables
fractal dimension - ANS-✔✔a measure of the complexity of an object or pattern
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