Friday Forest session

Human Impact

Forestry

Think of the Organutan in the Forests of
south America is there anything that we
do to effect it’s life

Open Ended

How do you think we effect the forests in South America?

Human Impact

Forestry

Standard

SEV4. Obtain, evaluate, and communicate
information to analyze human impact on
natural resources.

a. Construct and revise a claim based on
evidence on the effects of human activities
on natural resources.

Human Activities

Natural Resources

Agriculture
Forestry
Ranching
Mining
Urbanization
Fishing
Water use
Pollution
Desalination
Wastewater treatment

Land
Water
Air
Organisms

b. Design, evaluate, and refine solutions
to reduce human impact on the
environment including, but not limited to,
smog, ozone depletion, urbanization, and
ocean acidification.

Learning Target

I can explain how forestry affects land,
water, air, and other organisms.

I can show some solutions to these
problems.

Supporting Our Population

●Agriculture

○Fertilizer

○Eutrophication

○Monoculture

●Forestry

○Deforestation

○Logging

○Wildfire (Wildland fire)

●Ranching

○Livestock

○Pasture

○Overgrazing

●Fishing
○Wild Fishery

○Overfishing

○Bycatch

○Aquaculture

Why are trees and plants an
important part of the urban
environment?

Habitat for migrating species like

birds and butterflies.

Plants absorb water and reduce

flooding.

Plants remove air pollution and

give us clean air (very important in
cities where there is a lot of vehicles)

The beauty of nature reduces

stress, improves attention, and puts
humans in better moods.

We can grow food on rooftops and

out of windows.

Trees cool down cities in the

summer and protect against wind and
cold in the winter.

Did you
remember
these?

None

Some

Here are some of the reasons we need trees!

How does transpiration
occur in plants?
Transpiration occurs when
guard cells become turgid due
to the diffusion of water
molecules through the
accessory cells. Stomata open
as a result, and water
evaporates through them,
exiting the plant.

Let's do one together

●transpiration is the term

●Where do we put the term?

●What is the definition?

●Do you know any examples?

●What would a characteristic
be?.

Labelling

transpiration cheese maze: starting with the term, definition, characterisitcs, and example

Drag labels to their correct position on the image

supports cloud development

forest has a mist in the morning

Plants release water vapor into the air

transpiration

Labelling

Put the terms in the best spot.

Drag labels to their correct position on the image

ocean acidification

sut

eutriphication

bacterial illness like cholera

smog

Our Forests

Forests

The importance of forests cannot be underestimated. We
depend on forests for our survival, from the air we
breathe to the wood we use. Besides providing habitats
for animals and livelihoods for humans, forests also offer
watershed protection, prevent soil erosion and mitigate
climate change. Yet, despite our dependence on forests,
we are still allowing them to disappear.

Change from 1990 - 2015.

Forests

Why do we need them?

Here are some of the benefits of
forests.

Link to picture

Fire Management

When we see a wildfire, our first response is to put it out. For
decades, the Forest Service has done just that when it came to
wildland fires. But science has changed the way we think about
wildland fire and the way we manage it. We still suppress fires,
especially if they threaten people and communities, but we
understand that fire has a role in nature – one that can lead to
healthy ecosystems. So we look for ways to manage it to play its
role, for instance, by igniting prescribed fires (controlled burn).

Human Impact

Forestry

What happens after an ecological
disturbance occurred that left no
soil behind?

secondary succession

primary succession

climax community

pioneer species

Multiple Choice

What happens after an ecological
disturbance occurred that left no
soil behind?

• primary succession

• secondary succession

• eutriphication

• global warming

What happens after a
disturbance occurred that
left no soil behind?

secondary succession

primary succession

climax community

pioneer species

Prescribed Burns -
Choose one to
watch

Fire Behavior under historical (top) and current (bottom) conditions.

Why do we see more stand-replacement fires in forests today?

These are the three
most common
methods of
harvesting trees.

Clearcutting

removes all the trees.

Shelterwood logging

removes trees in strips.

Selective cutting

only remove specific
trees and is the most
labor intensive method.

Which model for
harvesting is best?

What are the pros and cons of
each type of harvesting?

Deforestation - A byproduct of transforming
ecosystems into cities/farms/grazing lands.

Deforestation is the clearing, destroying,
or otherwise removal of trees through
deliberate, natural or accidental means. It
can occur in any area densely populated
by trees and other plant life, but the
majority of it is currently happening in the
Amazon rainforest.

The loss of trees and other vegetation
can cause climate change, desertification,
soil erosion, fewer crops, flooding,
increased greenhouse gases in the
atmosphere, and a host of problems for
indigenous people.

What is Agroforestry?

Agroforestry combines agriculture and forestry technologies to
create more integrated, diverse, productive, profitable, healthy and
sustainable land-use systems.

Practices are focused on meeting the economic, environmental and
social needs of people on their private lands.The forestry
profession encompasses the science and practice of establishing,
managing, using, and conserving forests, trees and associated
resources in a sustainable manner to meet desired goals, needs,
and values.

What do we need from our forests?
How can we harvest those resources
sustainably?

What can you do?

❏Use less/buy less stuff

❏Plant trees

❏Print less, if you must print use both sides

❏Use bamboo paper products

❏Read digital books and use the library

❏Read magazines online

❏Reuse gift bags and send e-cards

❏Use reusable containers and cutlery

❏Buy paper towels made from recycled paper

❏Recycle paper as much as possible (Can all paper be
recycled?)

❏Share this list with others!

Which is not a function of forest?

Water cycle

Balancing oxygen and carbon dioxide

Formation of soil

Wildlife habitat

Multiple Choice

Which is not a
function of forest?

• supporting cloud development in the water cycle

• Keeping soil from erosion

• producing new soil from rocks

• prodcuing oxygen through photosynthesis

Which is not a
function of forest?

Water cycle

Balancing oxygen and

carbon dioxide

Formation of soil

Wildlife habitat

Impacts that destroy forests

Why are forests important?

How much of the world is made of these vital ecosystems?

​

​Fist to five

Keeping Track of

Human Impact

Human Impact

A Georgia success Story