Answer:
A population managed for MSY is kept below its carrying capacity so it can thrive without impacting an entire ecosystem.
Explanation:
In population ecology and economics, maximum sustainable yield (MSY) is theoretically, the largest yield (or catch) that can be taken from a species stock in an indefinite period. Based on the notion of sustainable harvesting, the MSY concept aims to maintain population size at the point of maximum growth rate by harvesting individuals that would normally be added to the population, allowing the population to remain productive indefinitely. Under the assumption of logistical growth, resource limits do not constrain individual reproductive rates when the population is small, but because there are few individuals, the overall yield is small. At moderate population densities, also represented by half of the carrying capacity, individuals are able to reproduce at their maximum rate. At this point, called maximum sustainable yield, there is a surplus of individuals that can be harvested because population growth is at a maximum level due to the large number of individuals breeding. Above this level, density -dependent factors increasingly limit reproduction until the population reaches carrying capacity. At this point, there is no individual surplus to be harvested and yields drop to zero. Maximum sustainable results are usually higher than optimum sustainable results and maximum economic results.
MSY is widely used for fisheries management. Unlike the logistics model (Schaefer), [1] MSY has been refined in most modern fisheries models and occurs in about 30% of the unexploited population size. [2] [3] This breakdown varies between populations depending on the life history of the species and the age -specific selectivity of the fishing method.
Answer:
im doing the same exame let me know if you get the answers
Explanation:
start at the lower lung fields and determine at which level you start hearing clear breath sounds.
The two features are four limbs and lungs. These features were essential for animals to move from aquatic to land.
Lobe-fins are not common among the living fish and are only exhibited by the lungfish and coelacanth. However, the lobe limbs are exhibited by various living species, like humans. This is due to the fact that all the tetrapods, that is, four-limbed vertebrates, share a more recent common ancestor with the lungfish and coelacanth.
Tetrapods evolved from a group of species, which were aquatic and exhibited scales and fleshy fins. However, they also had lungs, which they used to breathe oxygen. About 360 to 390 million years ago, the predecessors of these species started to thrive in shallower waters and finally moved to land.
With this, they experienced natural selection, which assisted various adaptations for a terrestrial way of life. The modern humans still persist the proof of the aquatic past in the manner the arms and legs are attached to the body.
Answer:
The answer is plane
Explanation:
This should be in mathematics not bio