Field studies and laboratory studies are mutually exclusive.
Broadest (most inclusive) of the levels of ecological organization.
Margaret Davis' studies on lake pollen sediments indicate that the forests of eastern North America did not change with the changing climate.
What do ecologists study?
Communities, Ecosystems, Individual Organisms, Populations
The mass of the epiphyte mats of the Olympic Peninsula temperate rain forests are _______the mass of leaves on their host trees
Research by Nalini Nadkarni demonstrated that the high productivity of the rain forest is a result of extremely fertile soils.
What are raw materials that an organism must acquire from the environment to live called?
What is an ecosystem defined as?
all of the organisms that live in an area and the physical environment with which they interact.
What is ecology?
the study of relationships between organisms and the environment
Temperate and tropical rain forest trees extract nutrients from epiphytic mats.
What do ecologists study?
rates of reproduction, rates of decomposition, soil chemistry
Nalini Nadkarni's study of tropical and temperate rain forests determined that
epiphyte mats contain a significant source of nutrients
The scientific method deals with absolute truths.
Norris and colleagues found that warblers using different habitats did not have different carbon isotopes in the tissues.
What don't population ecologists study?
Which of the following physical conditions describe the 0 to 15 m zone of a forest canopy?
Reduced temperature variation
Global ecology is the highest level of ecological organization and focuses on
The principal threats to the environment and biodiversity are:
Habitat loss, degradation and fragmentation, over exploitation of species, invasive species, pollution, global climate change
Which of the following statements gives the best interpretation of future world population growth trends:
Growth rates are declining globally but total population will continue to increase, eventually leveling off at about 9 billion by 2150
The only regions in which demand for resources does not currently exceed biocapacity are:
Europe Non-EU, Latin America and the Caribbean, and Africa
IPCC 2007 projections for global temperate increases from the 1980s to the end of this century range from averages of _________ to _________.
1.8 degree C - 4.0 deg C
Margaret Davis found ______ pollen in the deepest layers of sediment from an Appalachian Mountain lake.
Ecology can be defined as the study of the impact of human activity on the environment.
Ecotones are transitions between one ecosystem and another ecosystem
Ecology is a modern science of which ancient man had no knowledge.
Physiological ecologists study
physiological and anatomical mechanisms by which organisms deal with variation in their physical and chemical environment.
Which of the following deal with multispecies systems?
Communities and Ecosystems
Aerial plants obtaining nutrient from trapped organic matter.
What does the scientific method include?
observations, experiments, and modeling, posing questions and formulating testable hypotheses, and statistical analysis.
Which of the following levels of organization is/are correctly ordered?
individuals, population, interactions, community, ecosystem
An association of interacting species is a(n) ___________.
As of 2007, the global ecological deficit or overshoot of demand vs. biocapacity was equivalent to
According to Margaret Davis who studied pollen contained within lake sediments the vegetation landscape of the Avalanche Mountains from 12,000 years ago until approximately 100 years ago changed as follows:
Spruce, beech, chestnut
Ecologists study forest canopies using what?
Stable isotype analysis uses variation and element masses to better understand ecological pheneomena
The principle threat to the environment in biodiversity are:
Pollution, Global Climate Change, ++++ALL