Exam 3 Lecture Study Guide

4 Pages

Renewable Natural Resources
Course Code
RNR 1001

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Study Guide for Exam 3Fisheries ConservationDominant commercial fisheries groups finfishes crustaceans and molluscs kelpIndustrial fisheriesprotein and oilStocka unit of managementStock fluctuations due to exploitation and environmental factors habitat loss and degradation have also played an important roleFisheries and the Law of the CommonsControlling fishing effort through limits on harvest gear crew size area season etcFisheries biota characteristics fatigue due to high density of water swimbladder problems because of the pressuredepth relationship stress from the temperaturedissolved oxygen relationship for poikilotherms turbidity problems reduced primary production invertebrate mortality larval fish mortality reduced foraging by visual predators bioaccumulation and biomagnification problems because of movement of chemicals across thin gill tissue indeterminate growthfisheries advantage continued growth through life catch and release viable Type III survivorship high fecundities but high juvenile mortality complex trophic ontogeny requires consideration of food resources at all life history stages high population diversity because of reproductive isolation evolutionarily significant units designation of critical habitat under the ESAInvertebrates important as forage bioindicators EPT taxa complex life histories often result in high juvenile mortalityImportant commercially harvested invertebrateshigh economic valuePlants important as forage habitat macrophytes and commercial fishery kelp off California coast can become a problem particularly invasivesStakeholder groups diverse anyone with an interest in a fishery includes existence valueNatural Resource Management System resources profitseeking industries management bureaucracies diverse publicsRecreational fisheries managed by state agencies freshwater and marine to 3 miles NOAA 3 miles to 200 miles and straddling stocks between countries and statefederal boundary watersLouisiana Fisheries and Wildlife Commission political component of fisheries management sportfish issues with red drum in LouisianaFederal Aid in Fish Restoration Act 1950 and WallopBreaux Act 1984 money for fisheries management from 10 tax on sportfishing gear 185 motorboat fuels tax Aquatic Resources Trust Fund570 million split between Boating Safety and Sport Fish Restoration accounts funds redistributed to states on 75 federal25 state cost share basis based on license sales and size of the state 5 maximum per state coastal states must split equitably between fresh and salt water 125 on access mandatory up to 15 on education 18 to three wetlands programsFisheries management dependent on data biota relative abundance and species composition of the fish assemblage growth annuli on hard parts such as otoliths spines and scales mortality based on abundance of year classes
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