In almost all estuaries the salinity of the water changes constantly over the tidal cycle. To survive in these conditions, plants and animals living in estuaries must be able to respond quickly to drastic changes in salinity. Plants and animals that can tolerate only slight changes in salinity are called stenohaline (Sumich, 1996). These organisms usually live in either freshwater or saltwater environments.
Costs for chain link fences range from around $7 to $12 a linear foot for a 4-foot high fence, making a 200 linear foot fence cost roughly $1,400 to $2,400 in materials. Costs can vary depending on whether or not the fence is vinyl 1 coated and for taller fences, as well as for heavier wire.
1 Chain-link fence prices fluctuate with the cost of steel, but an average residential chain link fence with do-it-yourself installation typically costs $3-$6 a linear foot for 4' high and $8-$15 a foot for 6' high; with a gate or other options DIY materials can be $400-$2,000 for a 100' fence. With professional installation it can cost $0.50-$4 a foot, depending on materials and terrain, or $450-$3,500 to enclose a square acre. 2  Do-it-yourself installation of a high tensile electric fence to control livestock or wildlife costs about $0.05-$0.75 a foot, or $50-$650 to enclose a square acre.