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Ecology Chapter 1
First Ecology stuff
40
Biology
Undergraduate 2
01/23/2017

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Term
Ecosystem
Definition
A community of organisms and the environment in which they live
Term
Landscapes
Definition
include multiple ecosystems
Term
Biosphere
Definition
all ecosystems
Term
adaptation
Definition
a feature an organism gets that helps it to survive
Term
natural selection
Definition
The process in which the organism better suited to survive populates the generation
Term
Consumer
Definition
Eats organisms to gain energy
Term
producer
Definition
Organism that makes it's own energy from an external source
Term
Net Primary production
Definition
the amount of energy produced by photosynthesis minus that lost by respiration
Term
Nutrient Cycle
Definition
The cyclic movement of a nutrient between organisms and their environment
Term
What are the two main nutrients that are cycled?
Definition
Nitrogen and Phosphorus
Term
Scientific method
Definition
OHED, Observe, Hypothesize, Evaluate, draw conclusion
Term
Seasonality
Definition
Temperate environments have
Term
Trophic levels
Definition
Energy becomes bigger as it rises through
Term
Detritus
Definition
Non-living organic matter
Term
grazing
Definition
takes energy from sun's rays
Term
Deciduous leaves
Definition
Fall to the ground when conditions are not optimal
Term
Beech leaves
Definition
Stay on trees
Term
allocthonus material
Definition
Any detritus material that gets into an aquatic environment
Term
Stream order
Definition
Strahler index
Term
Headwaters
Definition
Orders 1,2 and 3
Term
Middle Reaches
Definition
Orders 4,5 and 6
Term
Large rivers
Definition
Orders 6 and higher
Term
Headwaters
Definition
Heavily shaded in summer
Term
Headwaters 2
Definition
Streams are shaded by riparian vegetation and canopy
Term
Headwaters 3
Definition
Very little Photosynthesis/Respiration
Term
Headwaters 4
Definition
most food is detritus / Allocthonus
Term
Middle Reaches
Definition
Not much shading by riparian vegetation
Term
Middle Reaches 2
Definition
Good amount of Photosynthesis/Respiration
Term
Middle Reach 3
Definition
Both Detrital and grazing food webs
Term
Large rivers
Definition
Water is turbid
Term
Large rivers 2
Definition
food is settling to the bottom
Term
Large Rivers 3
Definition
Clay is the smallest particle in water
Term
Large Rivers 4
Definition
Photosynthesis/Respiration is low
Term
CPOM
Definition
Course Particulate matter
Term
DOM
Definition
Dissolved organic matter
Term
Tannic acids
Definition
Prevent herbivory, kill bacteria
Term
Middle Reaches
Definition
Algae will grow here
Term
Headwaters 5
Definition
Mostly Shredders and collectors
Term
Middle reaches 5
Definition
Collectors and grazers
Term
Large rivers 5
Definition
Collectors, aquatic insects
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