100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Summary Population size and Ecosystem EDUQAS A level £3.49   Add to cart

Summary

Summary Population size and Ecosystem EDUQAS A level

 14 views  0 purchase

Summary of EDUQAS BIOLOGY component 1: Population size and ecosystem

Preview 1 out of 4  pages

  • May 23, 2022
  • 4
  • 2021/2022
  • Summary
All documents for this subject (1)
avatar-seller
christielau
Ecology
habitat :
place where species live

all species in habitat
community : a



mature
stationary
lag : not sexually
death
take time to find mate




/
←loÑ
pregnancy
got log :
no factor
limiting growth
stationary : birch = death
↳ in log
/ reach
carrying capacity
↳ die negative feedback leg less food predator d 9)
lag pop
:
, ,
time
biotic living ( predator / pathogen
:



non lining lniygen
abiotic temp )
: -




,


death : death > birth



Density
-




dependent = biotic . mate
, space in habitat
,
source of food
predator climate
Density independent
=
a bird new severe
,
-
.




Sampling techniques .




① Terrestrial animals
=
Mark -
release -




recapture ( Lincoln Index) Assumptions :
no births / deaths / immigration /

and marked
r emigration
→ animals are
captured
""d ^^
"
2nd sample total
1st sample ✗
no .
of marked 2nd sample

② Freshwater invertebrates
=
kick -




sampling and use Simpson 's Index


① Collect & identity animal using a
quadrat and a net


kick the area for set period
* Mark And Release
Collect animals in a net downstream -
find a suitable sample and
mark
③ Plants organisms
not to
-

make sure hurt them
=
Quadrat and transects and not to make them


Estimate % cover /frequency of each specie
visible by predators
release them and let population
Repeat at internals during path
-




reintegrate for ten
daysa .




-


come back and court
marked individual
number of
in
population .

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 christielau. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for £3.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

84866 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
£3.49
  • (0)
  Add to cart