Biodiversity

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Prepared by Dakota Joiner & Lindsey bat Joseph for . Alexander College Writing and Learning Centre, April 2015.. Research source: . Krebs, Charles J. . Ecology, . 6. th. ed. Pearson. : San Francisco, 2009. ID: 328824 Download Presentation

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Biodiversity




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Slide1

Biodiversity

Prepared by Dakota Joiner & Lindsey bat Joseph for Alexander College Writing and Learning Centre, April 2015.Research source: Krebs, Charles J. Ecology, 6th ed. Pearson: San Francisco, 2009.

Slide2

What is Biodiversity?

Biodiversity is the scientific term coined to describe the variety and diversity of organisms in a given ecosystem.

There are many different kinds of biological organisms in different ecosystems.

E.g., a tropical rainforest ecosystem may contain thousands of different species of animals, plants, insects, bacteria, etc.

Slide3

What is Biodiversity?

This idea generally refers to richness of species within a community.

Source: Walter

Jetz Lab, Yale University, adapted from Jetz et al. 2007, 2008.

Why do you think southern countries have more species than northern countries?

Slide4

What is Biodiversity?

Biodiversity is also used to describe taxonomical diversity, ecological diversity, genetic diversity, and molecular diversity.

Figure 1. A phylogenetic tree showing basic taxonomic divisions

Source:

Adl

,

Sina

M.; Simpson, Alastair G. B.; et al. (2006). "Toward Automatic Reconstruction of a Highly Resolved Tree of Life".

Science

311

(5765): 1283–1287.

Slide5

What is a ‘community’?

A community is a group of organisms living in the same habitat that are connected to each other by interactions, such as feeding or energy flow.

Source: Google Images

This is an example of the Antarctic community of organisms showing feeding relationships.

Slide6

Characteristics of Biodiversity

Biodiversity is stratified in a latitudinal manner. This is referred to as latitudinal species gradient.

Figure 1.

A graph demonstrating the latitudinal species gradient in terms of different numbers of species of fish found in different latitudes.

Something to Think About:

Why

do you think

fish biodiversity is highest around the equator?

Slide7

Characteristics of Biodiversity

The factors primarily affecting organismal diversity and distribution are:TemperaturePrecipitationAltitudeSoilsGeography The presence of other species.

Something to Think About:

Why

do you think

biodiversity

is

highest, both on land and in the seas, around

the equator?

Slide8

Some examples of the great biodiversity found in various ecosystems around the world:

Images from:

http://www.talesmaze.com/wp-content/uploads/2015/01/

Slide9

Not all sea dwellers are fish …

Nembrotha-cristata

Promachoteuthis

-sulcus

Pistol Shrimp

Yeti Crab

Orcinus

orca – Killer Whale

Slide10

And not all “fish” are actually fish

– Which of these are real fish?

Alarm Jellyfish

Frilled Shark

Red Cap Gold Fish

Lion’s Mane Jellyfish: Jellyfish are invertebrates

The Mexican Walking Fish is actually a type of salamander

Crocodile Fish

Slide11

Frogs are amphibians: they live in water and on land

They have many different characteristics.

Amazon

Milk Frog

Glass Frogs

Purple Frogs

Indian Bull Frog

Slide12

Some sea creatures spend significant amounts of time on land

Hermit Crab

Leatherback Sea Turtle

Slide13

Albinism

This is a rare, recessive gene that produces some very unique and rare animals. Humans can exhibit traits of albinism too.

Slide14

Birds

These unique creatures have evolved with many different characteristics.

Blue Footed Booby

King of Saxony Bird of Paradise

See the video about the Cornell University’s project on the Birds of Paradise:

https://www.youtube.com/watch?v=YTR21os8gTA

Cardinal

Gynandromorph

– this isn’t a different species of bird – it’s a cardinal that is displaying characteristics of male and female genders.

Something to Think About:

What do you think that the booby’s bright blue feet are for?

Slide15

See the video about the Cornell University’s project on the Birds of Paradise: https://www.youtube.com/watch?v=YTR21os8gTA

Slide16

To Learn More …

Consult an

ecology textbook to go further in depth.

See our school librarians for help finding books about ecology.

Also

, David Attenborough’s natural productions with the BBC (such as

Blue Planet

and

Planet Earth

) are rich in portraying species

diversity.

This

is an excellent way to see the different types of animals and plants around the world.

Slide17

Slide18


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