null
US
Entrar
Registre-se gratuitamente
Registre-se
Detectamos que o JavaScript não está habilitado no teu navegador. Habilite o Javascript para o funcionamento correto do nosso site. Por favor, leia os
Termos e Condições
para mais informações.
Próximo
Copiar e Editar
Você deve estar logado para concluir esta ação!
Inscreva-se gratuitamente
7543775
OCR - A-Level - Biology - Biodiversity
Descrição
A level Biology (AS Module 4) Mapa Mental sobre OCR - A-Level - Biology - Biodiversity, criado por Josh Anderson em 04-02-2017.
Sem etiquetas
biology
as module 4
a level
Mapa Mental por
Josh Anderson
, atualizado more than 1 year ago
Mais
Menos
Criado por
Josh Anderson
mais de 7 anos atrás
87
0
0
Resumo de Recurso
OCR - A-Level - Biology - Biodiversity
Measuring biodiversity
Species richness
The more different types of species present, the richer the habitat.
Observations of species present
Qualitative
Species evenness
Takes into account the population size of each species. Even when most of the species are abundant, rather than one dominant.
Observations of species and numbers of each to compare
Quantitative
Animals
Large
Careful observation of species and counting individuals
Small
Take samples of animals present, mark and capture
Mark and Recapture
Capture and mark the organisms harmlessly.
The number of captured organisms of this species is C1
Release the organisms that have been captured and marked.
Capture organisms again.
The number of captured organisms the second time around is C2.
The number of already marked organisms in this sample is C3.
Total population = (C1 x C2)/C3
E.g C1 = 3, C2 = 4, C3 = 2
(3x4)/2 = 6
Population is 6
Simpson's Diversity Index
D = 1- [∑(n/N)^2]
D = Diversity
∑ = Sum of all species [(n/N)^2]
n = Number of a particular spp of plant
N = Total number of all individuals of spp (∑n)
D will be between 0 and 1
Quer criar seus próprios
Mapas Mentais
gratuitos
com a GoConqr?
Saiba mais
.
Semelhante
GCSE AQA Biology - Unit 2
James Jolliffe
GCSE Biology AQA
isabellabeaumont
AQA Biology 8.1 structure of DNA
Charlotte Hewson
Biology Unit 2 - DNA, meiosis, mitosis, cell cycle
DauntlessAlpha
Cell Transport
Elena Cade
Function and Structure of DNA
Elena Cade
Biological Molecules Definitions
siobhan.quirk
Cells And Cell Techniques - Flashcards (AQA AS-Level Biology)
Henry Kitchen
Cell Structure
megan.radcliffe16
GCSE Biology - Homeostasis and Classification Flashcards
Beth Coiley
Exchange surfaces and breathing
megan.radcliffe16
Explore a Biblioteca