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Right whales:
Pollution:
http://www.youtube.com/watch?v=-u85HPbXjPE
Play video from PowerPoint (lobsterman)
Lobstering History
Long ago, lobsters were so plentiful that Native Americans used them to fertilize their fields and to bait their hooks for
fishing. In colonial times, lobsters were considered “poverty food.” They were harvested from tidal pools and served to
children , to prisoners, and to indentured servants, who exchanged their passage to America for seven years of service to
their sponsors. In Massachusetts, some of the servants finally rebelled. They had it put into their contracts that they
would not be forced to eat lobster more than three times a week.
Until the early 1800s, lobstering was done by gathering them by hand along the shoreline. (what would you this tell you
about the population, abundance?). Lobstering as a trap fishery came into existence in Maine around 1850. Today Maine
is the largest lobster-producing state in the nation. Though the number of lobstermen has increased dramatically, the
amount of lobsters caught has remained relatively steady. In 1892, 2600 people in the Maine lobster fishery caught 7,983
metric tons; in t 1989, 6300 Maine lobstermen landed 10,600 metric tons of lobster.
….until 1999. Fisheries, first in Connecticut, Rhode Island and then Long Island Sound, suddenly started dying. Individual
fishermen were hauling up as many as 400 dead lobster a day.
Journal
Scientists have many hypotheses regarding the large and rapid lobster die-off. Other than the pesticides mentioned in the
video, what other causes can you think of that would lead to a large scale die-off??
Scientific Hypotheses for the 1999 Lobster die-off
•Overfishing – 90% of the lobsters being captured did not have a chance to reproduce even once. So US regulators did increase the
minimum legal size.
•Parasitic paramoeba was found in many dead lobsters
•Pesticides – Resmethrin, Malathion, Methoprene: All used to fight West Nile virus. They are chitin inhibitors. The keep the
outsherll of mosquitoes from hardening – also, has the same effect on the shells of lobsters. A microscopic amount can kill a bunch
of lobsters. 33 parts per billion.
•Waste-water treatment chemicals discharged into the ocean. It was believed that oceans had the ability to absorb our wasted, but
they may have reached a saturation point. This discharge is so harsh that it can clean the growth off of lobster traps. Many lowered
near the treatment plants, would come out cleaner than they went in.
•There was a shell disease
•Global warming
The Science that deals with________________________________
______________________________________________________
ENVIRONMENT:_______________________________________________________________
ABIOTIC
FACTORS:
Temperature
range
Mineral availability
Habitat: ________________________________________
To understand an organism’s relationship to its’ environment, we must know more than where it lives – we must know HOW it lives.
The occupation of an organism is called its ____ ____ ____ ____ ____
It includes how to get food, reproduction, how to avoid predators, etc.
•It becomes apparent that all living things interact – they affect other living things and their environment; and all living things depend on5 each
other and their environment – they are interdependent!
Neat Videos
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Killer anemone
Giant Fleshy Scale Worm
Nudibranchs
Lobster Fight!
Temperature
range
Water
Light Intensity
Relative
Acidity
Temperature
Range
Hey, are you busy
Saturday night?
Physical Space
Type of soil
Rocks
Mineral
Availability
Minerals
Habitat
• Place where an organism lives
8
Niche
• “Occupation” of the organism
– It includes how to get food, reproduction, how
to avoid predators, etc.
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_Living things and how they interact
with each other and their non living environment
The Science that deals with____
ENVIRONMENT:__
ABIOTIC
FACTORS:
Ones surroundings___
Water
Light Intensity
RelativeAcidity
Physical Space
Type of soil
Habitat: _Place where an organism lives
Rocks
Temperature
range
Mineral availability
To understand an organism’s relationship to its’ environment, we must know more than where it lives – we must know HOW it lives.
Niche
The occupation of an organism is called its __
__ ____ ____ ____ ____
It includes how to get food, reproduction, how to avoid predators, etc.
Red Winged Blackbird
•It becomes apparent that all living things interact – they affect other living things and their environment; and all living things depend on each
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other and their environment – they are interdependent!
Biotic Factors
Population
Community
Autotrophs
Consumer
(Heterotrophs)
Decomposers
All the members of a particular species inhabiting a given area
All interacting populations in an area
Synthesize food
Consume food
•Predators:
•Scavengers:
Eats wastes and dead bodies, in this way materials are recycled
Symbiotic relationships:
Attack and live on or off of a living organism; cause harm
Examples:
2 species live together, both benefit
Examples:
2 species live together, 1 benefits other is unaffected
Examples:
ECOSYSTEM
BIOSPHERE
Living Community + environment
Portion of earth where life exists
MUTUALISM
PARASITISM
Commensalism
Commensalism
Parasitism
Biotic Factors
Population
Community
Autotrophs
Consumer
(Heterotrophs)
Decomposers
Symbiotic relationships:
Parasitism (+/-)
All the members of a particular species inhabiting a given area
All interacting populations in an area
Synthesize food
Consume food
•Predators:
•Scavengers:
Wolves, Alligators, Fish
Vulcher, flies…
Eats wastes and dead bodies, in this way materials are recycled
close and often long-term interactions between
different biological species
Attack and live on or off of a living organism; cause harm
Examples:
Tick and Deer
2 species live together, both benefit
Mutualism (+/+)
Commensalism (+/0)
ECOSYSTEM
BIOSPHERE
Examples:
Bumble bee and flowers
2 species live together, 1 benefits other is unaffected
Examples:
Birds and Trees
Living Community + environment
Portion of earth where life exists
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Ticket Out!
• On a piece of paper to be handed in before you leave write
what type of symbiotic relationship is being described:
– The remora is a fish that in this picture is attached to a
sea turtle. It gets a free ride from the turtle and feeds on
the scraps of food it leaves behind