Exam 3 - review questions Flashcards
(39 cards)
A species that is put into an area in which it did not occur naturally is said to have been:
introduced
Hawaii and Australia are islands (small and large) that seem to be relatively vulnerable to invasive species. Why?
- long standing geographic isolation
- ecological naivety
- few large herbivores and predators
- far distances for colonizing organisms to reach their shores
What invasive, exotic species are there in Australia?
- Burmese python
- cane toad
- zebra mussel
- nutria
Hybridization has been occurring between these 2 native species and related species, thereby leading to genetic swamping of the other species. In the US these are:
- mallard ducks
- coyotes
Feral hogs are a major ______ _______ in KY.
disease reservoir
The problem with introduced earthworms is that they:
quickly compose organic matter in systems used to slow release
The quantity, quality, and frequency of arriving organisms via invasion is known as:
propagule pressure
If 50,000 invasive species are released in a new area, how many will become invasive and likely to establish?
“Tens Rule” states about 1/1000 species introduced will become invasive (generally)
50,000/1,000 = 50
Skellman found that invasive species often spread in a:
radial wave
Elton found that species rich communities:
were least likely to be invaded by invasive species.
The Lacey Act was amended in 2008 to:
keep track of importation of wood species, including those potentially invasive.
The zone where species are most thermodynamically comfortable is known as:
climatic envelope
There is a strong correlation between temperature and the greenhouse gas _____.
carbon dioxide.
Evidence for anthropogenic climate change during the past 150 years is supported by what evidence?
- changing distribution of species
- rising sea levels
- rising temperatures
- changing phenology of species
- rising greenhouse gases in the atmosphere
- melting glaciers and ice caps
A ghost forest is:
tidal inundation and increased salinity that kills trees
Direct carbon dioxide effect can lead to:
- increased ocean acidity
- increased C:N ratios in plant tissue
- more coral death and bleaching
- faster growing plants
Two federally listed US species that are likely to be impacted by inundation of sea water in coming decades are:
- Florida panther
2. Florida red wolf
This greenhouse gas could be released in major amounts that could really accelerate climate change if warming continues. It is released quite heavily from bacterial decay of organic matter locked up in frozen tundra.
Methane
The global panel of scientists that periodically meet and come together to review, revise, and publish the latest scientific models on climate change
IPCC
An organism where a parasite reaches the adult stage and reproduces
primary host
This prion-based pathogen is 100% fatal to members of the deer family
chronic wasting disease
This neurological disease caused by a lyssavirus is also nearly always fatal to humans and a number of mammalian hosts without vaccination. It has unfortunately been spread to wild animals via domestic animals in many places around the world
rabies
This disease is one again back in the headlines, having killed chickens and other birds within the US.
avian flue (influenza)
One climate change related phenomenon may be influencing the range of this general type of parasite responsible for harming moose and people.
tick
