Name a potential problem with unstructured models in this case

Harder to keep track of individuals. Becomes innaccurate

different fecundities for individuals of different ages (newborns vs. adults)

different properties at different ages won't be distinguishable

different fecundities

leads to a higher estimate

leads to an overestimation of individuals

not all are able to reproduce

problems identifying percentage of population reproducing

would not be accurate

its becomes difficult to know which individuals are part of which generation so we can't just count

too many stochastic outcomes

difficult to keep track

difficult to set parameters

reproduction times

double counting

annual variations

changes the structure of the model

unknown variables

different survival rates

hard to keep track of population

complicated

difficult to keep track of populations

hard to differentiate old and new

difficult to keep track of everything

moving from baby to adulthood

difficult to count

different fecundity for different aged individs

difficult to account for variation

reproduction varies

can't keep track of individuals

No longer included in exponential part of equation

population interaction

complicated

hard to keep track of population

Individuals may have different survviability or fecundity with age

can't tell when we have adults surviving after reproduction or not

drought survival

difficult to determine who will reproduce the following year and how age effects reproduction

trouble with finding a correct number

not all organisms at reproductive age

potential lack of accuracy

newborns assumed same as parents

unclear

generational differences

inconsistent calculations within the population

lost track of counts

questions aren't clear...

too many individuals reproducing and dying fast

changes often

not keeping track of populations properly

can't keep track of individuals

adults die off at different times

difficult

Doesnt account for more reproduction

complicated

differential survival

different reproduction cycles

some may be have been killed

mathematically hard

too much incest

Can't distinguish new organisms from old ones.

babies can't reproduce but adults can

complicated

unable to differentiate nee and old individuals

not standardized

no reference point

lacking consistency

doesn't take into account reproductive potential

natural selection

difficult to keep count of aging individuals

counting twice

Many are not able to reproduce

we don't know if all organisms are going through reproduction

hard to keep track of who's surviving and who's not

Difficult to make predictions

count the same people twice

mortality rates change year to year

hard to know exactly gowns many survive

hard

small populations

makes hard to keep track

doesn't account for age of reproductive maturity

continuous population growth

inaccurate

hard to predict

harf

less accurate

generations overlap

Some individuals won't start reproducing until later in life

probability of death is higher for survivors than new offspring

difficult

inaccurate

reproductive age discrepancy

different age have different survival

hard to keep track of who survives

confusing

multiple reproductive outputs per individual per more cycles

false assumption = parents and new offspring have same fecundity and survival rate

doesn't show change in isolated reproduction rate

doesn't include maturity

hard

can't account reproducing females for the next generations

not standardized

difficult to track individuals

harder to track individual numbers

overestimation

unknown which members are at reproductive age

idk

changes in generation

hard to consider reproduction of everyone

diff reproduction times

many reproductive episodes

babies can't reproduce

Because they could be babies, or adults who have not reproduced by the next age

double counting

hard to keep track of whose reproducing

need to recount each time

can't keep track of individuals

hard

some may be killed

accuracy

it is inconsistent?

unclear

reproductive age varies

doesn't account for all factors

tough to calculate

hard to be calculated

maturity

variability in reproduction

complicated

unknown number of new individuals

Different p values at different stages of life

the older population would be less likely to reproduce

understimation

mathematically confusing

not able to keep track

because the older generation could still be reproducing

too much work

May consider suriviving adults as new individuals

some older individuals may not be able to reproduce

changes yearly

very difficult

need to take in account of p

different reproductive schedules

You wouldn't know if it is an adult surviving or an offspring. And you don't know how long they are able to survive for

Hard to make predictions

Hard to determine when adults die

rate of survival will vary by age

underestimation

not all are able to reproduce

must take account of generation

stop reproducing after a certain age

Differential survivability in m/f, size, age

Can't keep track of individuals

Babies can't have babies.

Older individuals may have lower fertility and/or higher mortality

mathematically hard

Young are more likely to survive than older individuals.

may account for an individual multiple times (OVERESTIMATE)

Incest avoidance

Not all are reproducing at the same time