Hierachy of feeding relationships which determines the pathways for energy flow and nutrient cycle.
trophic level
3 of 15
total mass of living material in a specific area at a given time
biomass
4 of 15
organism whose ecological function involves the recycling of nutrients by feeding on dead or decaying organisms.
decomposers
5 of 15
able to transform one type of energy into another
transducers
6 of 15
a thermodynamic quantity equivalent to the capacity of a physical or biological system to do work
energy
7 of 15
total energy or nutrients assimilated by an organism, a population or an entire community
gross primary product
8 of 15
percentage of energy transferred from one trophic level to the next
ecological efficiency
9 of 15
rate at which an ecosystem accumulates energy or biomass, excluding the energy it uses for respiration
net primary product
10 of 15
consist of dead and decaying remains of plants and animals as well as animal wastes such as manure and bone meal
natural fertiliser
11 of 15
mined from rocks and deposits and then converted into different forms are blended together to give appropriate balance of minerals for a particular crop
artificial fertiliser
12 of 15
competing organisms
pest
13 of 15
poisonous chemicals that kill pests
pesticide
14 of 15
using organisms that are either predators or parasites of the pest organism
biological control
15 of 15
Other cards in this set
Card 2
Front
Original source of energy in biological system
Back
sun
Card 3
Front
Hierachy of feeding relationships which determines the pathways for energy flow and nutrient cycle.
Back
Card 4
Front
total mass of living material in a specific area at a given time
Back
Card 5
Front
organism whose ecological function involves the recycling of nutrients by feeding on dead or decaying organisms.
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