A population of 2000 nudibranchs on a coral reef experiences 800 births and 750 deaths. What is r (the intrinsic rate of increase) for this population

what are the advantages and disadvantages of high levels of parental care in sharks?

which lampreys are native and which are invasive to the Great Lakes?

| bartleby Male red-winged blackbirds have bright red patches on their shoulders (epaulets). C Home | Chegg.com Females prefer to mate with males with the largest epaulets. Researchers captured all of the male birds in a single population. They measured how many parasites each male had (#parasites/body mass, higher numbers indicate a higher parasite load) and the size of the male's epaulets (cm). They produced the following graph (the line shows the relationship between parasites and epaulet width): 0.5- 0.4- 0.3- 0.2 0.1 2.0 2.5 3.0 3.5 4.0 Epaulet Width (cm) Explain what these data reveal about the correlation between epaulet size and parasite load and what might explain the fact that females prefer to mate with males displaying large epauletsa Parasite Load (#parasites/body mass)

Using the table above, describe the trend or what is happening with the survivorship of the turtles

The information indicates that the dinoflagellate population studied is Select one: a. Use the following information to answer the next question. To investigate the ecological strategies of dinoflagellates, a type of microscopic algae, researchers set up some aquariums of dinoflagellates. Dinoflagellates were introduced into each aquarium at day 0. After 15 days, the dinoflagellate population bloomed (had a rapid population increase) in each aquarium. Within 48 hours of the appearance of the "blooms," few dinoflagellates remained. C. b. K-selected with a J-shaped growth population curve d. r-selected with an S-shaped growth population curve K-selected with an S-shaped growth population curve r-selected with a J-shaped growth population curve O O O

What contributions have laboratory and mathematical models made to our understanding of predator–prey population cycles? What are the shortcomings of these modeling approaches? What are their advantages?

Which of these following scenarios is caused by the Allee effect? Corals rely on external fertilization when gametes (sperm and eggs) are released into the sea in large quantities and have to meet at random chance. When coral densities drop due to coral bleaching and die back, external fertilization becomes inefficient, few zygotes form, and coral populations further decline or go extinct. After a big disturbance in forests, such as fire, many seeds germinate and seedlings compete for space, light and resources. K-selected species produce fewer, but larger seeds that are initially outnumbered by the numerous sEeds and resulting seedlings of r-selected species. The initial advantage of r-selected species of Occupying more locations and therefore by random chance also better locations, is later overcome by the K-selected species higher competitive ability. Therefore, for the first years to decades, r-selected species dominate areas that experienced severe disturbances, while in mature…

Does the apparent KM increase / decrease in the presence of a competitiveinhibitor?

What is the number and types of lamprey species that are present in the Great lakes?  which lampreys are native and which are invasive to the Great Lakes? which lampreys are parasitic and which are not  in the Great Lakes?  what do non-parasitic lampreys do? What is the  life cycle of sea lampreys, and the various control methods for lampreys intersect with this life cycle?