Many factors contribute to the decrease in otter populations, and they can depend on the species. Over-hunting has reduced most species' populations at some point in time. Environmental factors also affect populations: pollution, especially toxic pesticide runoff, in otter habitats have severely cut numbers among North-American and Eurasian otters; oil spills as well as bacteria in feline fecal matter from San Francisco's poor sanitation system have killed off large numbers of sea otters; and human interference (including fishing, shipping, and automobile traffic) in otter habitats has detrimentally impacted most species' populations.
The population of Otter Tail Corporation is 4,000.
Otter Co-op's population is 150.
The population of Otter Co-op is 105.
Otter Tail County
The population of zoo plankton would decrease.
A decrease in the birth rate will cause a decrease in population over time.
Otter Tail County
Death and migration are factors that can decrease hare population.
Population crash
There are many contributing factors that could be the cause for a decrease in fox population. Over population, not enough food, disease, or over hunting or poaching any of these could be the reason for a decrease in the population.
The decrease in population is 900. The Percent change is 900 / 4500 X 100 = 20% Decrease Or = -20%.
A decrease in overall population/population density.