A team of 102 scientists spent a year surveying a small area of the San Lorenzo rain forest in Panama to count the number of species of arthropods living there. After collecting 129,494 specimens—using nets, traps, shovels, tree-climbing harnesses, helium balloons, and other creative gear—it took the team eight years to sort and identify the arthropods. Rather than measuring the entire 6000-hectare (ha) forest, the researchers sampled arthropod diversity by intensively collecting as many arthropods as they could in 12 plots that measured 20 m × 20m square. If 1 ha=10,000 m², how many hectares of forest did they sample in all?
a. 20 m×20 m×12=4800 ha
b. 4800 m²×10,000 m²/1 ha=48,000,000 ha
c. 20 m×20 m=400 ha
d. 4800 m² x ha/10,000 m² = 0.48 ha

A team of 102 scientists spent a year surveying a small area of the San Lorenzo rain forest in Panama to count the number of species of arthropods living there. After collecting 129,494 specimens—using nets, traps, shovels, tree-climbing harnesses, helium balloons, and other creative gear—it took the team eight years to sort and identify the arthropods. Which of the following nested groups best describes the taxonomic context for the San Lorenzo project?

a. Animalia > Bilateria > Arthropoda > Ecdysozoa

b. Protostomia > Lophotrochozoa > Ecdysozoa > Arthropoda

c. Arthropoda > Protostomia > Ecdysozoa > Bilateria

d. Bilateria > Protostomia > Ecdysozoa > Arthropoda

A team of 102 scientists spent a year surveying a small area of the San Lorenzo rain forest in Panama to count the number of species of arthropods living there. After collecting 129,494 specimens—using nets, traps, shovels, tree-climbing harnesses, helium balloons, and other creative gear—it took the team eight years to sort and identify the arthropods. By comparing the number of arthropod species that were common among the 12 plots sampled, the researchers estimated that the total number of arthropods in the whole San Lorenzo forest is 25,000 species.

To come up with this estimate, what's one assumption the researchers had to make about the forest?

Evaluate this statement: Evolution is said to occur when new traits accumulate over time, increasing complexity.

A team of 102 scientists spent a year surveying a small area of the San Lorenzo rain forest in Panama to count the number of species of arthropods living there. After collecting 129,494 specimens—using nets, traps, shovels, tree-climbing harnesses, helium balloons, and other creative gear—it took the team eight years to sort and identify the arthropods. The graph below shows some of the data for the major arthropod groups collected. Notice that the scale on the y-axis is logarithmic to make both small and large numbers legible on the same graph. For example, there are about 400 species of spiders but only 40 species of bees.

About how many arthropods were found in total?

About what percentage of these were beetles?

A team of 102 scientists spent a year surveying a small area of the San Lorenzo rain forest in Panama to count the number of species of arthropods living there. After collecting 129,494 specimens—using nets, traps, shovels, tree-climbing harnesses, helium balloons, and other creative gear—it took the team eight years to sort and identify the arthropods. A team of 102 scientists spent a year surveying a small area of the San Lorenzo rain forest in Panama to count the number of species of arthropods living there. After collecting 129,494 specimens—using nets, traps, shovels, tree-climbing harnesses, helium balloons, and other creative gear—it took the team eight years to sort and identify the arthropods. Use the data in the graph to analyze the following statements.

Select True or False for each statement, then correct any false statements to make them true.

T/FAll taxa shown in the graph are insects.

T/FAll taxa shown in the graph have segmented bodies and limbs.

T/FAll taxa shown in the graph are terrestrial.

T/FIf the researchers had sampled for mollusks, they probably would have found almost as many species as they did for arthropods.