Chapter 3.2 Flashcards
What makes Sea Otters a keystone species?
a. It eats invasive species of kelp.
b. It keeps destructive Sea Lions out of the area.
c. It eats Sea Urchins, which can destroy kelp forests.
d. It was introduced from the coast of Florida and placed in Oregon.
c. It eats Sea Urchins, which can destroy kelp forests.
The variety of life on Earth; it includes species, genetic, and ecological diversity
Biodiversity
Essential ecological processes that make life on Earth possible is known as
Ecosystem Services
An object’s or species’ worth based on its usefulness to humans is known as
Instrumental Values
An object’s or species’ worth, based on mere existence; is has an inherent right to exist is known as
Intrinsic Value
The heritable variation among individuals of a single population or within a species as a whole is known as
Genetic Diversity
The source of variation inbreeding depression is known as
genetic diversity
How do we measure biodiversity?
Count what we find and estimate
The variety of species, including how many are present (richness) and their abundance relative to each other (evenness) is known as
Species Diversity
The variety within an ecosystem’s structure, including many communities, habitats, niches, and trophic levels is known as
Ecological Diversity
What describes a species that is native to a particular area and is not naturally found elsewhere is known as
Endemic species
An area that contains a large number of endangered endemic species is known as
Biodiversity Hotspots
Species at high risk of becoming extinct is known as
Endangered Species
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The destruction of part of an area that creates a patchwork of suitable and unsuitable habitat areas that may exclude some species altogether can be defined as
Habitat Fragmentation
Patterns of diversity express species that that travel on a latitude-latitudinal gradient. What species falls in this category?
Birds
Which level of biodiversity would be most impacted if the population of a key predator sharply decreased?
A) Ecosystem Diversity
B) Species Diversity
C) Genetic Diversity
D) A and B
E) B and C
E) B and C
Why is it believed that lower latitudes have higher biodiversity?
A) The weather is more helpful for having a higher mammal diversity.
B) The average rainfall is lower than higher latitudes.
C) There are more available niches than higher latitudes.
D) The lower latitudes do not have higher biodiversity
C) There are more available niches than higher latitudes.
What are the human provisions that add value to biodiversity?
Food
Fiber Products, cotton and wool
Fuel
Pharmaceuticals
What are the cultural benefits that add value to biodiversity?
Aesthetic
Spiritual
Educational
Recreational
What are the ecosystem regulations and support that add value to biodiversity?
Nutrient cycling
Pollination
Seed Disposal
Air/water pollution
Flood control
climate regulation
soil formation
erosion prevention
pest control
wildlife habitat
genetic resources
waste treatment
What are some examples of ecosystem services?
shelter
food
genetic resources
cultural benefits
purify air and water
High levels of biodiversity stability of communities and resilience is known as
Ecosystem Function
