100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Summary A level Biology Ecology Notes £5.49
Add to cart

Summary

Summary A level Biology Ecology Notes

 28 views  0 purchase

Notes on chapter 11 ecology from the CIE spec of Biology. Applicable for CIE spec

Preview 4 out of 32  pages

  • No
  • 11
  • August 12, 2021
  • 32
  • 2021/2022
  • Summary
book image

Book Title:

Author(s):

  • Edition:
  • ISBN:
  • Edition:
All documents for this subject (1)
avatar-seller
NenMedic
🌿
Ecology
Class CMK

Created @April 15, 2020 10:17 PM

Materials

Reviewed

Type Main




Learning Objectives
Must Know Content



Explain the importance of biodiversity in terms of ecosystems, habitats and
species (1)

Learn techniques for assessing the occurrence, abundance and distribution of
species(2)

Use statistical methods to analyse the relationships between the distribution
and abundance of species and abiotic or biotic factors (3)

Calculate an index of diversity and use it to compare biodiversity across areas
(4)

Describe and explain how species are classified (5)

Outline the characteristic features of the three domains (6)

Outline the characteristics of the four kingdoms of eukaryotic organisms (7)




Ecology 1

, Discuss the threats to biodiversity of aquatic and terrestrial ecosystems (8)

Discuss the reasons we need to maintain biodiversity (9)

Discuss some of the methods used to protect endangered species including the
control of invasive or alien species (10)

Discuss the roles of non-governmental organisations in local and global
conservation (11)



Table of Contents
Learning Objectives
Definitions
Ecosystems (1)
Biodiversity (4)
Why is biodiversity good?
Genetic Diversity
How is diversity assessed? (2)
Sampling (3)
Random sampling using quadrats
Simpsons index of Diversity (4)
Systematic Sampling
Estimating numbers of mobile animals
Classification (5/6/7)
Defenitions
Heirarchy
Characteristics
3 Domains
5 Kingdoms
Threats to Biodiversity (8/9/10)
How can we protect endangered species
Conservation methods


Definitions
Define species

A group of organisms with similar morphology and physiology which can breed
together to produce fertile offspring and which is reproductively isolated from other



Ecology 2

, species.

Define Habitat

The place where an organism, population or community lives.

Define Population

All of the organisms of the same species present in the same place at the same
time, that can breed w/o one another

Define Community
All of the living organisms of all species in a particular ecosystem

Define Ecosystem
All the living organisms of all species (the biotic component) an all the non-living
(the abiotic component) that are found together in a defined area and that interact
with one another

Define Niche

The role of an organism in an ecosystem

Define Biotic Factors

The living, or once living, components of an ecosystem. (i.e) the relationships
between organisms

Give three examples

Biotic factors include animals, plants, fungi, bacteria, and protists.

Mutualism

Parasitism

Define Abiotic Factors
The non-living factors that affect living organisms, and so affect communities

Give 5 examples

Water

Soil pH

Temperature



Ecology 3

, Wind

Light Intensity

Mineral Ion concentration

Humidity




Ecosystems (1)
What is an ecosystem?

A relatively self-contained, interacting community of organisms, and the
environment in which they live and with which they interact.

It included the habitats and all the organisms, even dead leaf litter, soil, water and the
physical and chemical factors that affect organisms.

What is a habitat?

A habitat describes the place where a species lives within an ecosystem

An organisms role in the ecosystem - how they 'fit in' is their niche

How an organism obtains energy, how it interacts with both its physical environment and
with other species all come under its niche



Biodiversity (4)
Biodiversity

Define Biodiversity

The degree of variation of life forms in an ecosystem

Biodiversity is taken to include diversity at three levels

The variation in ecosystems or habitats




Ecology 4

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller NenMedic. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for £5.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

53068 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now

Start selling
£5.49
  • (0)
Add to cart
Added