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BI 301 Global Ecology and Biogeography > Global Diversity (Week 5 Lecture 7) > Flashcards

Global Diversity (Week 5 Lecture 7) Flashcards

1
Q

Who named over 9000 terrestrial plant species?

A

Carl Linnaeus

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2
Q

90% of plants are ______.

A

Angiosperms

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3
Q

Tropical regions are ______ with species while polar regions are ______ with species.

A

Rich, poor

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4
Q

Who described a global latitudinal gradient in species diversity?

A

Alexander von Humboldt

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5
Q

Who has the most plant species between asia europe and north america?

A

Eastern asia, north america, europe

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6
Q

In Canada, where is the most species richness?

A

Central Canada

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7
Q

In the temperate zone, a peak of within-community species richness occurs between approximately what latitudes?

A

Between 35 and 60 degrees.

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8
Q

Understanding patterns of diversity is important for ______.

A

Conservation

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9
Q

Between tropical, polar and temperate regions, arrange them in species richness.

A

Tropical, temperate, polar

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10
Q

An example of a the dry- and wet-adapted species - sorted into uplands and wetlands respectively.

A

Rice

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11
Q

Adaptation, isolation, speciation and extinctinction are examples of?

A

Evolutionary processes

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12
Q

True or False: evolutionary processes can happen quick or slow.

A

True

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13
Q

True or False: Humans and their effects on the environment have greatly accelerated these processes for some species.

A

True

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14
Q

What are the 5 spatial scales in the hierarchical framework for processes influencing biodiversity?

A

LoLaRCG

Local
Landscape
Region
Continent 
Global
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15
Q

What are the 3 examples of important factors for local?

A

Microenvironment, biotic interactions, disturbance

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16
Q

What are the 4 examples of important factors for landscape?

A

Soil type, topography, elevation, metapopulation dynamics, disturbance

17
Q

What are the 4 examples of important factors for region?

A

Climatic gradients, recent glacial history, migration

18
Q

What are the 4 examples of important factors for continent?

A

Climatic cycles, mountain building, speciation, extinction

19
Q

What are the 2 examples of important factors for global?

A

Plate tectonics, sea level changes

20
Q

At local scales, what 2 processes influence biodiversity on a spatial scale?

A

Physical complexity of habitat and interactions among species

21
Q

At landscape scales, what 2 processes influence biodiversity on a spatial scale?

A

Migration among communities and extinction within communities

22
Q

At global scales, what 2 processes influence biodiversity on a spatial scale?

A

Migration and extinction in response to climate change

23
Q

If you increase productivity then…

A

more energy is available for growth and reproduction and therefore more individuals can live in the same area

24
Q

______ hypothesis is tropics are more species rich because the total tropical land area is greater than total temperate land area.

A

Area

25
Q

Available ______ affects species richness, and most consistently showing the relationship

A

Energy/productivity

26
Q

Area hypothesis contains both an ______ component and ______ component.

A

Ecological and evolutionary

27
Q

______ component is as area increases, spatial heterogeneity also increases

A

Ecological

28
Q

______ component is over evolutionary time, a larger area affords greater opportunity for geographic isolation and therefore, greater rates of allopatric speciation.

A

Evolutionary

29
Q

What is differences in opportunity for growth?

A

conditions are so unfavorable that a few species are physiologically capable of persisting there

30
Q

What is age of the communities?

A

Increase in species richness toward the Equator, tropics are older than poles

31
Q

If communities in the tropics have remained intact for a longer time then,

A

the organisms in those communities should have had more opportunity to diversify into many species.

32
Q

True or False: Differences in species richness are largely a result of continental-scale geographic relationships

A

True

33
Q

Why could asia have more plant species then europe and US?

A

China is directly connected to tropical and subtropical regions

BI 301 Global Ecology and Biogeography (14 decks)

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