Fill in the blanks for lecture 2/3 Flashcards

1
Q

Species biodiversity is the _______ of species in a community and some measure of its ________ _________.

A

1) number

2) relative abundance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

The simplest measure of species biodiversity is the ______ of species. This is called species _______.

A

1) number

2) richness

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

The simplest measure of species biodiversity is ________ _________.

A

Species richness.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

A diverse community has ______ species than a less diverse community.

A

more

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Species diversity is defined on the basis of 2 factors: 1) Species _______ and 2) species _________.

A

1) Richness

2) Evenness

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Species richness is the _______ of species.

A

number

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Species evenness is the ________ ________ of species.

A

relative abundance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Simpson’s index of evenness: if 2 individuals were taken at ________ from a community, the probability that the two species belong to the same species is: (_) ________.

A

1) Random

2) (D) dominance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the two factors that define species diversity?

A

1) Species richness (or the number of species)

2) Species evenness (the relative abundance of species)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

The differences in the species diversity index (Shannon-Wiener in this case) reflects the difference in _______ ________.

A

Species evenness.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

By using life history traits, one may ________ which species or communities are most __ _____.

A

1) Predict

2) At risk

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Mean fecundity, parenrtal care/large egg size, maximum maturation size are all components of the __________ strategy.

A

equilibrium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Maximum fecundity, large bodied, maximum maturation size are all components of the _________ strategy.

A

periodic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Minimum fecundity, smaller bodied, and minimum maturation size are all components of the _________ strategy.

A

opportunistic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The equilibrium strategy was seen in fish of ______ ______ _______.

A

Pacific coast texas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

At low altitudes, we see the opportunistic strategy employed by the blacknose shiner, a fish of ______-______ _____ _______.

A

South-Eastern North America

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

The periodic strategy is see employed by large, old fishes of the ______ and ________ ________.

A

Western and Northern watershed.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

These ______ ______ approaches in community ecology are just starting to become recognized. (ex: when trying to restock an area with fish; evolutionary basis)

A

trait based

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Species richness is the ________ of species.

A

number

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

The relative abundance of species can be either due to ________ or ________.

A

1) dominance

2) evenness

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Biodiversity is:

1) Species _______
2) ________ ________ of species to each other (_______ vs. _______)
3) Diversity of ________ traits
4) Diversity of _______ _______ ______

A

1) evenness
2) relative abundance; evenness vs. dominance)
3) genetic
4) functional feeding groups

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Even with just _______ ______, spatial scale matters.

A

Species richness

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

The different spatial scales are what? (4) (In order of decreasing size)

A

1) Biogeographic region/realm
2) Biome/ecoregion
3) Regional
4) Local

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

_______ ______: the number of species at a local site.

A

Alpha diversity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
_____ ______: the change in species composition between 2 or more sites or the amount of species turnover in a given region.
Beta diversity
26
______ ________: the total diversity in a given region across all sites.
Gamma diversity
27
Latitudinal gradients: ________ species richness closer to the equator.
Increasing
28
The four hypotheses to explain latitudinal diversity gradients are: 1) _____ hypothesis 2) ________ hypotheses: climate 3) ______ ________ and time for diversification 4) _________ hypothesis: rates of diversification
1) Null 2) Ecological 3) Geological history 4) Evolutionary
29
Null models (____ _____ ______): how relationships look in the absence of a process (ex: competition).
Mid domain effect
30
Storch et al (1996) Ecology letters 9:1308-1320: used global distribution of bird data. Mid domain model explained less than ___ _________.
2% globally
31
Better predictions when MDE (Mid-domain effect) was applied with __________ ______ (_________)
Biogeographic regions (continents)
32
Hypothesis 2 - Climate: _______ and _________ should explain patterns of latitudinal patterns in diversity. Should have more species where it is ______ and ____.
1) Temperature/(precipitation) 2) Precipitation/(temperature) 3) Warm/(wet) 4) Wet/(warm)
33
Species-energy hypothesis = _____ ________ hypothesis.
more individual
34
The species-energy hypothesis states that more productive regions (_______) should support _____ individuals. Areas with more _________ should have more species.
1) Tropics 2) Individuals 3) Individuals
35
Species-Energy hypothesis is supported by data sets from ______ and ________.
1. Trees (Worlwide data) | 2. Birds (North American breeding bird survey)
36
The relationships for the species-energy hypothesis were __________ to account for increased diversity with decreasing latitude. For the data sets, species _______ _______ (solid observed line) than predicted (dashed line).
1. Insufficient | 2. increased faster
37
Why are there more species in the tropics than one would expect based on precipitation and number of individuals? The answer is that warmer regions with higher precipitation _______ ____ _____ ___ ______ __ _________ ________. So, species persist at ________ population sizes in warmer climates.
1) Support more species per number of individuals sampled | 2) Smaller
38
Support: species-individual curve for marine benthic invertebrates. But...variation in minimum viable population size _______ _______ for orders of changes in species richness across latitude.
cannot account
39
Diversification = ________ - _________.
Speciation - (minus) extinction
40
L. G. Stebbins: are the tropics a _______ for generation of new taxa or a ________ for preservation of old taxa.
1) cradle | 2) museum
41
(Hyp. 4) Tropical environments are ______ and more ___________ than temperate environments.
1) Older | 2) Widespread
42
So... in tropics: 1) _____ time for diversification in tropics 2) ______ harsh climate events (ice ages)
1) More | 2) Fewer
43
Global climate over the Cenozoic Era (past 65 million years): _____ then gradual _______.
Warm then gradual cooling
44
Tropical environments reached max extent 50 mya when warm waters (18C) extended into artic: 1) tropics are ______ than temperate areas 2) Tropics have a longer time free from ________ 3) Tropics have _______ _____ during the early cenozoic.
1) Older 2) Extinction 3) greater area
45
Species area relationship: logS = logC + zlogA or _ = __^_
S = CA^z
46
``` Species area relationships: S = CA^z, where, S = ______ __ ________ A = ______ C = ________ z = ________ ```
``` S = number of species A = Area C = intercept z = slope ```
47
Why is area important in determining species diversity? 1) ______ habitats support _____ species 2) _______ opportunities for __________ 3) _______ populations and _______ risk of extinction 4) ________ areas support the ____ territories needed by carnivore species.
1) More; more 2) Greater; speciation 3) Larger; lower 4) Larger; huge
48
Larger areas have _____ variety of habitats and _____ species.
Greater;more
49
Larger areas have ______ populations and _____ probability of extinction
larger; lower
50
Large z values (of the species-area curve) = ______ _____ per unit area.
more species
51
small z values (species-area curve) = _____ ______ per unit area. Which means the island is more _________.
1) less species | 2) homogeneous
52
Important events that affect species diversity on islands are: 1) 2)
1) Immigration of species to the island | 2) Extinction
53
Immigration has two components: 1) ______ or _______ to island 2) Establishment of a _________ population
1) Dispersal or movement | 2) breeding population
54
The two types of dispersal or movement are?
Passive and active. (passive is like wind dispersal, active is like flight or walking there)
55
Colonization of islands is: 1. 2.
1) Species specific (based on the trait of the species, ex: can it fly or dispersed by wind?) 2) Distance effect (how far away the island is from the mainland source of the species)
56
Global extinction is the loss of the ______ _____ _____ of a species.
entire gene pool
57
_____ extinction refers to the loss of a species in ______ of its range.
Species;part
58
Extinctions may affect ______ _____ in a community.
many species
59
Extinction is a _______ _______.
Natural process
60
``` Why do species become extinct? 1. 2. 3. 4. ```
1) predation effects 2) competition exclusion 3) Loss of genetic diversity 4) Random effects
61
Species-area relationships between mainland and island: 1) Mainland will support _____ species than the island 2) Species number doesn't _____ ___ _____ on mainland so, slopes differ between habitats.
1) More | 2) Change as fast
62
Species area relationships: | As islands _______ in size, they become more like the mainland.
Increase
63
Extinctions increase as an island fills with ________.
species
64
The reason that extinctions increase as an island fills with species is that: 1) There are _____ species to go extinct (math) 2) _____ populations have higher risk of extinctions - ______ effect 3) ________ _________ can hasten extinctions (ex: competitive exclusion)
1) More 2) Small 3) Species interactions
65
Several studies have shown that extinction rates are ______ on small islands.
greater
66
Why do smaller islands have higher extinction rates?
1) Smaller total population and greater risk of chance extinction 2) Fewer refuges (safe areas) from competitors and predators
67
I = ?
Immigration rate
68
When I = 0, S = ?
P
69
When S = P, this means what?
all species in the source pool are already on the island and there is NO MORE IMMIGRATION
70
Diversity is determined by the relationship between _______ and ________.
immigration and extinction
71
S-hat = ?
equilibrium diversity
72
The further away an island is, the lower the _________ rate
immigration
73
Smaller islands have _____ extinction rates and ______ species numbers compared to larger islands.
higher;lower