The demographics (the study of population and related activity), show that as the population increases, so doe the number of anglers. Not all anglers are fly anglers; some are either spinnbait, trollers, or bait.
Some anglers, use two or more methods of angling. The groups are also divided into Saltwater and Freshwater Anglers, with some anglers doing both.
At one time all fishing rods were cane, before that they were wood. There have been experiments with metal rods, telescoping rods, fiberglass, boron, graphic, ceramic compositions with boron and graphite. Angling always has periods of equipment break through, where a new material or design pushes a previous material or design off of the shelves at the store. Not only fly rods, but hooks, line, lures, boats, motors, clothing; change over time.
The number of licenses sold for angling can fluctuate according to spare time available for a angler to go fishing, Many people in the USA are working two jobs, or have family’s to raise, so the available time to go fishing is reduced or disappears.
The place to go fishing can be a problem, if public lands and water become private, or monopolized by other activities. Who wants to try and go fishing on a lake that has been taken over by a sailing club, that holds races every weekend. How about a stream or river that is full of groups tubing (truck inner tubes)or canoing, so there is no fishable pools to fish.
Then there are the waters that have been polluted so there is nothing there to catch, or if caught you would not want to eat what you caught.
Sometime your favorite waters have been fenced off, or build up with housing so that fishing is no longer possible (or you do not wish to fish there anymore).
As population centers grow outward, the countryside is used up at a alarming rate, with 10 or 20 acre home sites. While in the inner city core of the area, houses are on 40’ x 80’ lots. There are only 640 acres in a square mile, few people are using up more land.
With the land goes the waters that are there, so places to go fishing diminish.
Minnesota has lots of anglers, fly angling is a minority, but that is increasing at a fast rate. 15,453 lakes ( Lake Superior, still only counts as one), 9000 miles of streams and rivers, gives Minnesotans a place to go fishing close to home (usually within 1 mile).
~Parnelli
[This message has been edited by Steven H. McGarthwaite (edited 08 May 2006).]