Fixed effort harvesting and fixed quota harvesting are two very different approaches to fishing, hunting, and timber harvest. Describe each and describe how each affects the population being harvested.

A group of bulls (group 1) which contains 25 bulls is to graze a 5ha paddock with a pre-grazing mass of 2400kg DM/ha. They will be removed at a post-grazing mass of 2000 kg DM/ha. How may days can the group stay in the paddock?

With regard to industrial agriculture, it is distinct from traditional agriculture in that: Its development tends toward monocultures Its development tends toward polycultures Its development involves an equal blend of monocultures with polycultures It is less well integrated into market economies, producing less excess food to sell

At which level of the Ecological Model is the following quote focused upon? From the website of the National Conference of State Legislatures: "The Patient Protection and Affordable Care Act, among many prevention and public health provisions, provides for federal rules on nutrition labeling of standard menu items at chain restaurants with 20 or more locations doing business under the same name (Sec. 4205). This includes disclosing calories on menu boards and in written form, available on request, additional information about total calories and calories from fat, amounts of fat and saturated fat, cholesterol, sodium, total and complex carbohydrates, sugars, dietary fiber, and protein. These menu labeling requirements enacted as part of federal health reform will preempt state and local menu labeling requirements." (https://www.ncsl.org/research/health/trans-fat-and-menu-labeling-legislation.aspx) Public policy Interpersonal Community O Institutional

Two winters ago, a species of bird called the pine siskin began appearing in droves at backyard bird feeders in my hometown. We would occasionally spot a few each winter, but numbers were unusually high that year. The next winter, it seemed as if all of the "extra" pine siskins had disappeared. Numbers fell back to the levels that we were used to seeing. Use the concept of carrying capacity to explain the irruption of pine siskins described in the scenario. Provide your answer in a standard paragraph using complete sentences

What if we were able to restore some critical salmon habitat, like the forests surrounding the spawning streams? To test this restoration, increase K to 40,000 fish. What would that do to the MSY value? [ Select ] Does this mean you would be able to harvest more or less fish? [ Select ]

Describe the trends in global fish capture from 1950 to 1990 and from 1990 to 2016.  Describe several factors that account for these trends

What is the relationship between population density and available resources?   exponentially proportional   There is no relationship.   directly proportional   inversely proportional

A species that feeds on herbivorous species is called a tertiary consumer. keystone species. secondary consumer. primary consumer.

Identify methodologies that may alleviate conservationists' concerns about the negative effects of livestock operations?