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Protecting endangered plant and animal species

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Extinct: a species is extinct when there is no reasonable doubt that the last individual has died. Critically endangered, endangered and vulnerable: ... – PowerPoint PPT presentation

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Title: Protecting endangered plant and animal species


1
Protecting endangered plant and animal species
2
The processes leading to the natural loss of
species
1. natural death,2. population pressure,3.
destruction of wildlife habitats (e.g.
tropical forests, coral reefs,
wetlands),4. hunting for foods, sports or
medicines,5. pollution.
3
Endangerment of Species
  • more than 1,000 animal species are endangered
    worldwide today.
  • Extinct
  • a species is extinct when there is no reasonable
    doubt that the last individual has died.
  • Critically endangered, endangered and vulnerable
  • species which face high risk of extinction in
    wild in the near future, with decreasing risk
    level from critically endangered to vulnerable.

4
Factors affecting Risk Level of Endangerment
  • Population size of the species,
  • Size of habitats,
  • Number of mature individuals,

5
Examples of Endangered Species
6
The current rate of species loss
1. African elephant,2. Tiger,3. Chinese white
dolphin,4. Giant panda.5. Coral reef,6.
Tropical Rain Forest.
7
Causes of Endangerment
  • Destruction of habitats
  • Pollution
  • Deforestation
  • Urbanization
  • Disease and limited distribution
  • Introduction of exotic species
  • Over-exploitation and illegal hunting

8
Over-exploitation
In order to get timber for paper, furniture and
building materials, a lot of trees are cut down.
This destroys the woodland habitat.
9
Hunting
Hunting
10
Why do we need to save endangered species? 1
Humans depend on ecosystems.
The nature provides us water and air.
11
Why do we need to save endangered species? 2
  • Ecosystem will become unstable
  • Loss of valuable natural resources
  • Loss of employment
  • Species have rights to survive

12
The consequences of losing species
1. the danger to ecological stability,2. the
importance of genetic diversity in allowing
different species to meet different
challenges and to fulfill different
functions within the biosphere,
13
3. the danger that the extinction of one species
can lead to the decline in other species,
4. the loss of material from which to create
potentially useful hybrid strains of plants and
animals, or to create new foods, medicines, and
fibres.
14
What should be done?
  • Pollution control
  • Reduce the use / recycle natural resources
  • Ban or restrict activities that cause harm to the
    nature, e.g. hunting
  • Act of Endangered Species

15
The nature/scale of remedial measures needed to
reverse current trends
1. International efforts through the activities
of groups such as World Wide Fund for Nature
(WWF), Friends of the Earth and Greenpeace.
16
2. International agreements arrived at partly as
a consequence of their lobbying e.g. Convention
on International Trading of Endangered Species
(C. I. T. E. S.) and the agreements that restrict
whaling.
17
3. Hong Kong's role
i. as a signatory to the treaty banning the
international trade in ivory, ii. promoting the
conservation of bird life through the
preservation of the Mai Po marshes, iii. controls
to prevent the import of endangered species, iv.
additional steps Hong Kong could take in this
areas.
18
4. China'a rolea developing interest in areas
such as panda research, Pere David Deer and the
Guangdong bird sanctuary.
19
5. Individual's role
i. appreciating the importance of well-informed
people mobilizing public opinion to change
attitudes,
ii. working for public acceptance of the need to
spend public money on worthwhile projects and
supporting such projects in practical ways,
20
iii. countering the influence of those who have a
vested interest in courses of action which have a
detrimental effect on the environment,
21
iv. being discriminating in what one buys so that
wherever possible one avoids products whose
manufacture or sale contribute to the destruction
of the natural environment,
v. exploring what these roles mean in practice in
the H. K. context,
vi. dangers implicit in precipitate, uninformed
public pressure (e.g. in 1989 WWF report).
22
Discussion
  • If dinosaurs were still alive in the world,
    should we conserve them?
  • For endangered species that threaten our life,
    should we conserve them? How to judge, decide and
    make a balance?
  • Human is selfish for exploiting the life of so
    many species, do you agree?

23
Discussion
  • Keeping animals in zoo is one way to protect and
    keep valuable species. What are its advantages
    and disadvantages?
  • Traditional Chinese Medicine (TCM) uses body
    parts of animals to cure illnesses. How do you
    feel? What could be done?
  • If the protection of endangered species will
    cause unemployment and hardship of the people in
    the developing country, what should be done?

24
Relevant Websites 1
  • Endangered Species Program, U.S. Fish wildlife
    Service (http//endangered.fws.gov)
  • Convention on International Trade in Endangered
    Species of Wild Fauna and Flora CITES
    (http//www.cites.org)
  • Endangered Species on EE-Link Endangered Species
    (http//eelink.net/EndSpp)
  • A SeaWorld Education Department Resource
    (http//www.seaworld.org)
  • Endangered Species (http//www.seaworld.org/endang
    ered_species/escont.html)

25
Relevant Websites 2
  • Agriculture, Fisheries and Conservation
    Department (http//www.afcd.gov.hk)
  • Conservation (http//www.afcd.gov.hk/con_new/chine
    se/homepage.htm)
  • Example of endangered species that could be used
    in Traditional Chinese Medicines
    (http//www.afcd.gov.hk/web/chinese/conservation/c
    onserv/annex3.htm)
  • Examples of plant species included in the Animals
    and Plants (Protection of Endangered Species)
    Ordinance (http//www.afcd.gov.hk/web/chinese/cons
    ervation/conserv/annex4.htm)
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