Ecology Flashcards

Question

% of toxin taken when eaten

Answer 1

A toxin in a food chain

Answer 2

Amount in one organism

Answer 3

Fat soluble otherwise they’d be pooped out

Answer 4

Not on earth

Answer 5

No longer in Canada

Answer 6

Close to extinction in part or all of Canada

Answer 7

May become endangered if nothing changes

Answer 8

Low or declining numbers

Answer 9

Size Diet Biotic potential Range of species Range of individual Human interaction

Answer 10

Larger animals need more food and space (smaller is better)

Answer 11

Carnivores diet may die out, there will always be plants. Specific diet is also bad. (Herbivore=good)

Answer 12

Birth rate (high is good)

Answer 13

How much land a species can live on (high is good)

Answer 14

How far an individual must go for food, mates etc (Low is good)

Answer 15

We’re dangerous

Answer 16

If there is only 1 kind and environmental change happens everything will die out

Answer 17

Number of species/number of organisms 0-1 The closer to 1 the better

Answer 18

Count number of species Not accurate

Answer 19

Number of individuals/number of organisms X 100 = %

Answer 20

The interaction between two or more organisms for the same resource in a given habitat

Answer 21

Members in same species, different species, simillar species

Answer 22

food, light space, space/territory, mate

Answer 23

when an organism eats another organism to obtain food

Answer 24

Physical attributes: speed mimicry camouflage Physical defences: quills, bad taste Chemical defences: odor ink spray

Answer 25

bacteria, fungi parasites

Answer 26

Occurs between the same type of organisms or species, live together to help each other, shared food and childcare sesponisbilities, groom each other and take care of sick, hunt in packs and provide protection

Answer 27

Parasitism-benefits one species, harms other (+, -) Commensalism-benefits one no effect on other (+,0) Mutualism-both benefit (+,+)

Answer 28

maximum number of individuals an organism can support without reducing its ability to support futre generations of the same species. The population overshoots the carrying capacity it has a negative effect on the environment

Answer 29

As prey number increas the predator can capture prey more easily. Since the predators are well fed they can have more offspring, so their population increase. The increase in predators causes a decrease in prey. As more prey arer aten the predator food supply decrease and so does the predator population. With fewer predators the prey population recovers repeating the cycle.

Answer 30

For an ecosystem to be sustainable no one population in the community can excedd its carry capacity for very long or by very much. The goal of sustainability is to meet the needs of the present without affecting the ability of future generations to meet their needs.

Answer 31

excuding great lakes = largest lake in ontario More people in the area has increased phosphorus in the water this affected the water quality

Answer 32

Land area that channels rainfall and snowmelt to creeks streams and rivers and eventually to outflow points such as reservoirs bays and the ocean

Answer 33

Bacteria levels: detiction of coliform bacteria a bacteria that come from human intestines indicating that there is human poop in the water Dissolved Oxygen: The concentration of oxygen that is dissolved in water. These oxygen molecules are used in cellular resperiation. Health of fish shows amount of D.O. The type of fish and other organisms living in the water indicates the level of dissolved oxygen. Healthy Trout = high oxygen levels Carp and Catfish = low oxygen levels No fish = very low oxygen levels Biological Dissolved oxygen demand: how much oxygen consumers in a lake need

Answer 34

organic solid waste- (source? sewage, animal poop, decomposing plants): oxygen in water is consumed to break down matter Organisms that cause disease-(source? sewage & animal waste) can trigger disease Inorganic solids and dissolved minerals-(source?acids released by factories, road salt, fertilizers, soil erosion) kills bacteria harms trees, organisms die, algae blooms causes decomposers to take more of the oxygen, makes water cloudy heat (source? electricity plant) takes fresh lake water and replaces with warm reduces solubility of oxygen Organic chemical products (source? oil and fat, pesticides, phosphate) toxic, makes algae grow faster Acid rain (source? chemicals) acidifies the lake

Answer 35

Mosquitoes and an increase in west nile virus More perciptation and higher temps increasing breeding for mosquitoes leading to more cases of WNV Mitigation Remove any areas around your house that could become breeding grounds. (filled with water) Remove swampy bush areas around or on your property Adaptation Wear light coloured clothes Cover up with long pants and shirts Apply insect repellent before going out Avoid going out when mosquitoes are most active Resilience Halton is tracking the West Nile Virus Spraying mosquito larvicide around breeding areas

Answer 36

The native people deforested the forest, killing the animals that they used to eat and they started starving which led them to all eat each other.

Answer 37

Regenerative Agriculture' describes farming and grazing practices that, among other benefits, reverse climate change by rebuilding soil organic matter and restoring degraded soil biodiversity – resulting in both carbon drawdown and improving the water cycle. Can use Hooved animals

Answer 38

in the atmosphere, makes up human mass, get nirtogen from eating producers, producers get nitrogen from roots assimilation. Nitrogen fixation: N2-NH3 (atmospheric nitrogen to ammonia) Nitrification: NH3-NO3 (amonia to nitrate in the soil) denitrification: NO3-N2 nitrate to atmospheric nitrogen

Answer 39

in all living things, found in rocks sediments, in things, they die and run off returns it to the soil

Answer 40

photosynthesis -> cellular respiration whne dead bodies decompose and release CO2

Answer 41

Biome-ecosystem-community-population-organism