Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
35 Cards in this Set
- Front
- Back
|
Primary Succession
|
The colonixation of new sites by communities of organisms
|
|
|
Secondary Succession
|
The sequence of community changes that take place after a community is disrupted by natural disasters or human actions
|
|
|
How are primary and secondary succession alike?
|
Both refer to a community of organisms colonizing in an area
|
|
|
How are primary and secondary succession different?
|
Primary succession occurs on new sites, and secondary succession occurs in areas that previously contained life
|
|
|
Density-dependent factors
|
Disease, competition, parasites and food
|
|
|
Density-independent factors
|
Most are Abiotic facotrs such as: temperature, storms, floods, drought, habitat disruption and pollution
|
|
|
What limiting factor affects all populations regardless of their density?
|
Density-independent factors
|
|
|
Describe the growth of small species
|
Grow fast and live short lives
|
|
|
Describe the growth of large species
|
Grow slow, have a long life span, and its environment MUST be stable
|
|
|
Describe a "J" curve
|
"J" curves illustrate the exponential growth of a population; They show that as a population gets larger, it also grows faster
|
|
|
Describe a "S" curve
|
An "S" curve shows a population leveling off in population size after reaching its carrying capacity
|
|
|
How are "J" and "S" curves alike?
|
Both describe the population growth of organisms
|
|
|
Carrying Capacity
|
The number of organisms of one species that an environment can support
|
|
|
Habitat Fragmentation
|
The separation of wilderness areas from other wilderness areas
|
|
|
Habitat Degradation
|
The damage to a habitat by pollution
|
|
|
How are habitat degradation and habitat fragmentation alike?
|
Both refer to the loss of habitat of oraganisms and can cause problems for different organisms and the biodiversity
|
|
|
What are the terrestrial biomes?
|
Tundra, taiga, desert, grassland, temperate deciduous forest, and tropical rainforests
|
|
|
What are the two major limiting factors for the formation of terrestrial biomes?
|
Temperature and Precipitation
|
|
|
How much of the Earth is covered by aquatic biomes?
|
Three-quarters
|
|
|
What biome is treeless with long summer days and short periods of winter sunlight?
|
Tundra
|
|
|
What biome is also called a coniferous forest?
|
Taiga
|
|
|
What is the driest biome?
|
Desert
|
|
|
How do ecologist classify deserts?
|
Any place that recieves less than 20 cm of rain annually
|
|
|
What are large communities covered with grasses and similar small plants?
|
Grasslands
|
|
|
What are grasslands called in Australia, Canada, and the US?
|
Prairies
|
|
|
What are grasslands called in Russia?
|
Steppes
|
|
|
What are grasslands called in Africa?
|
Savannas
|
|
|
What are grasslands called in Argentina?
|
Pampas
|
|
|
What kind of forest is dominated by broad-leaved hard wood trees that lose their leaves annually?
|
Temperate deciduous forests
|
|
|
What biome has warm temperatures, wet weather, and lush plant growth?
|
Tropical rain forests
|
|
|
Photic Zone
|
The portion of the marine biome that is shallow enough for sunlight to penetrate
|
|
|
Aphotic Zone
|
Deeper water that never recieves sunlight
|
|
|
Intertidal Zone
|
The portion of the shorline that lies between the high and low tide lines
|
|
|
Describe intertidal ecosystems
|
Recieve high levels of sunlight, nutrients, and oxygen, but because it is so warm, it does not hold alot of oxygen for the organisms to survive in the water
|
|
|
What are the aquatic biomes?
|
Marine (saltwater) biomes, and freshwater biomes
|
