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44 Cards in this Set
- Front
- Back
which of the following is the best example of an ecosystem |
community of organisms that live on a ponderosa tree |
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which of the following describes net primary production |
total amount of biomass produced by only autotrophs after they have met their energetic needs |
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the relationship between primary production and actual evapotranspiration (AET) is a |
positive linear correlation |
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in the experimental lake Area of Ontario Canada, what increased algal biomass and thus NPP |
Nutrient addition |
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when looking at global marine environments, where is the highest NPP found |
at the edge of continents |
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which of the following is not a form of biodiversity |
all of the above are forms (species, anatomical, genetic, physiological) |
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a study by David Tilman on the relationship between plant species diversity and total plant biomass showed that as the number of species in the plots increased the total biomass |
increased |
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which of the following demonstrates bottom up control in an ecosystem |
woody plants--> snowshoe Hare--> lynx |
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Relationship between Wet Meadows and Dry Medows |
NPP was highest when both N & P were added together the effect of adding N & P together in the dry meadows was greater than the sum of the individual effects that each nutrient had on its own |
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what is it called when the consumers affect the structure of the community or ecosystem |
top down controls |
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what is is called when the effects of predators on prey that alter abundance, biomass, or productivity of a pop, community or trophic level across more than one link in the food web? |
trophic cascade |
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The study on grazing by large mammals in the Serengeti found that |
plots where the herbivores were excluded showed a decrease in plant biomass over time intermediate grazing intensity produced the highest compensatory growth |
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Raymond Linderman coined this term as the transfer of energy from one part of the ecosystem to another (as from prey pop to predator population) |
Trophic dynamics |
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since energy is lost at each trophic level, this limits which of the following |
# of trophic levels # of individuals at the top of the trophic level |
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which of the following would be a cause for primary succession |
volcano creating new land glacier receding |
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which of the following do high growth rates, smaller size, high degree of dispersal, and high rate of population growth characterizes |
pionner species |
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which of the following was an example of secondary succesion |
clear cut temperate forest of Peidmont plateau |
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the ecosystem changes occur during succession |
All of the above (primary production, total biomass, nutrient retention) |
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the model of succession in which early colonizing species are not limited to pioneer species is the |
inhibition model tolerance model |
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the model of succession in which early colonizing species make environment suitable for later successional species is the |
facilitation model |
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in regards to succession, which of the following describes the combination of species which make the most efficient use of available resources and conditions. |
climax community |
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which type of community or ecosystem would be the most stable |
high resistance & high resilience |
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which of the following statements regarding the long term park grass experiment in England is TRUE? |
the ratio of growth forms remained stable in both the unfertilized and fertilized plots |
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which of the following is NOT a technique described in the textbook as a method to enhance the restoration of disturbed areas |
using bioremediation by microbes as a mean to remove toxins left behind from mine wastes. |
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which of the following describes the field of landscape ecology |
all of the above |
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which of the following are considered when quantifying landscape structure |
all of the above |
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a perimeter that is stable, permanent, and determined by a long-term natural feature or condition is called a |
inherent edge |
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the term Ecotone refers to |
zone of overlap between adjoining patches |
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edges are hotspots for biodiversity because |
all of the above |
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which of the following is (are) effects of edge habitat |
all of the above borders are used (travel, to attract predators, to contain more micro habitats and niches) |
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the formula for S= P/2.... about landscape |
gives information about the shape of patches on the landscape |
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in the study of landscape structure on the dispersal of small rodents the researchers found that |
the proportion of individuals that moved increased as patch size increased |
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in the Glanville fritillary butterfly, the relationship between pop density and patch size was |
negative |
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which of the following are causes of landscape structure origin and chnage |
all of the above (geological processes, climate, fire) |
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Corridors are important in landscape ecology because they |
provide additional habitats for plants and animals permit travel of some organisms between patches |
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the ecology of lakes that are higher up on the landscape differ from that of lakes that are lower in elevation because |
all of the above |
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an ecosystem engineer is best defined as |
as organism that can cause changes in the environment that greatly impact the structure of the landscape. |
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which of the following is an example of an ecosystem engineer |
african elephant beavers |
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which of the following is the best example of geographic ecology |
categorizing the distribution of plant species on a mountainside as you move from low to high elevations |
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the relationship b/w island size and species richness is |
positive |
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the relationship b/w species richness and distance from the mainland or source population is |
negative |
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the biogeographic gradient that shows a decrease in the number of species as you move from the tropics to higher latitudes is called the |
species diversity cline |
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which of the following is NOT one of the hypotheses to explain the increased species richness seen in the tropics |
species there have experienced more frequent large scale disturbances than those at higher latitudes so competitive dominance has not occurred. |
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although geographic area occupied by temperate deciduous forest is roughly the same size in Europe, East Asia, and Eastern North America, tree diversity is much higher in Asia. This is because |
all of the above |