Reservoir Fisheries and Limnology Gordon E. Hall

BioScience ◽  
1972 ◽  
Vol 22 (10) ◽  
pp. 625-625
Author(s):  
Robert W. Pennak
Keyword(s):  
Reservoir Fisheries

Black Bass Diversity: Multidisciplinary Science for Conservation

2015 ◽  
Keyword(s):  
Economic Impact ◽  
Impact Analysis ◽  
Habitat Degradation ◽  
Economic Value ◽  
Smallmouth Bass ◽  
Economic Impact Analysis ◽  
Reservoir Fisheries ◽  
Central Texas ◽  
Black Bass ◽  
Preferred Species

<em>Abstract</em>.—The Guadalupe Bass <em>Micropterus treculii</em> is a central Texas endemic black bass species occurring only in streams and rivers draining the Edwards Plateau ecoregion. It is designated the state fish of Texas and provides a popular sport fishery. In addition to being a popular sport fish, it is listed as a species of special concern due to habitat degradation and hybridization with Smallmouth Bass <em>M. dolomieu</em>. Past socioeconomic surveys of Texas black bass anglers have focused primarily on reservoir fisheries while little is known about fishing patterns, economic impact, and preferences of river and stream anglers. A Web-based open-access survey was used to determine fishing characteristics, assess attitudes and quantify the economic impact of anglers fishing rivers and streams in a 24-county region of Texas from August 20, 2011 to December 20, 2012, with a focus on anglers who specifically fished for Guadalupe Bass. A total of 700 respondents participated in the survey. More than half of respondents were paddlers targeting black bass, and 42% specifically fished for Guadalupe Bass on their trips. An additional 34% of anglers listed black bass species, which included Guadalupe Bass as their preferred species. Similar to previous surveys of Texas river and stream anglers, access was identified as the largest impediment to the future maintenance and improvement of river and stream fishing. Based on 563 surveys used in the economic impact analysis, using IMPLAN (Impact Analysis for Planning) Professional version 2 (Minnesota IMPLAN Group, Minneapolis), an estimated US$74,182,080 in direct angler expenditures was spent on fishing trips to the study region, resulting in a total economic impact (including indirect and induced impacts) of $71,552,492 and 776 full-time jobs. These findings indicate the economic value of river and stream angling to the Texas economy.

Fishery Resources, Environment, and Conservation in the Mississippi and Yangtze (Changjiang) River Basins

2016 ◽  
Keyword(s):  
Ctenopharyngodon Idella ◽  
Commercial Fisheries ◽  
Aquatic Animal ◽  
Black Carp ◽  
The Past ◽  
Reservoir Fisheries ◽  
1960S And 1970S ◽  
The 1960S ◽  
Intensive Aquaculture ◽  
Lake Fisheries

<em>Abstract</em>.—Lakes are very important resources for fisheries production in China. The total area of lakes for commercial fisheries in China reaches 1.02 million ha, which accounts for 18% of the total freshwater aquaculture area. China has gained rich experience developing lake commercial fisheries over the past 60 years. In the 1950s, lake fisheries were primarily focused on the capture of natural aquatic animal species. With the success of the artificial reproduction of the four domestic carps (Silver Carp <em>Hypophthalmichthys molitrix</em>, Bighead Carp <em>H. nobilis </em>(also known as <em>Aristichthys nobilis</em>), Grass Carp <em>Ctenopharyngodon idella</em>, and Black Carp <em>Mylopharyngodon piceus</em>), stock-enhanced fisheries became the main production method in the 1960s and 1970s. During this period, large-scale resources investigations all over China were conducted, some stocking and management theories that were based on primary production developed, and fish production potentials for lakes were determined. The united fishing method was created during this period, which significantly increased the capture efficiency in large lakes. In the 1980s, semi-intensive and intensive aquaculture methods, including application of fertilizers and artificial feeds, cage culture, and pen culture, were applied to lake and reservoir fisheries, which substantially increased fishery production and also the income of fishermen. However, intensive aquaculture in lakes has caused serious environmental problems, such as ecosystem degradation, exhaustion of natural fisheries resources, decreased biodiversity, and increased eutrophication. Sustainable development of fisheries in lakes of the Yangtze River basin has been facing unprecedented challenges, both to the environment and to human society. More and more attention has focused on the balance between fisheries development and environmental protection in the past two decades. Ecofishery is a possible solution to this potential conflict. As a strategy for lake fisheries reform, it is suggested that use of natural food resources in lakes should be more efficient than present, and lake fisheries should be developed based on ecosystem restorations.

scholarly journals The small-scale urban reservoir fisheries of Lago Paranoá, Brasília, DF, Brazil

2007 ◽  
Vol 67 (1) ◽  
pp. 9-21 ◽  
Author(s):  
T. Walter ◽  
M. Petrere Jr.
Keyword(s):  
Nile Tilapia ◽  
Basic Education ◽  
Capital City ◽  
Small Scale ◽  
Monthly Income ◽  
Urban Centers ◽  
Small Scale Fisheries ◽  
The Poor ◽  
Reservoir Fisheries ◽  
Average Monthly Income

In many cases in large urban centers, which have appropriate waterbodies, small-scale fisheries are the only source of cheap protein for the poor. In Lago Paranoá, located in Brasília, the capital city of Brazil, fishing was studied by conducting interviews with 53 fishers filling in logbooks from March, 1999 to March, 2000 in three fishing communities. The fishers come from the poorest towns around Brasília, known as satellite-towns. They have been living there on average for 21.7 years (s = 9.6 years), their families have 4.9 members (s = 3.6) on average and 44.2% do not have a basic education. However, such characteristics are similar to the socioeconomic indices of the metropolis where they live. In spite of being illegal between 1966 and 2000, fishing generated an average monthly income of U$ 239.00 (s = U$ 171.77). The Nile Tilapia Oreocrhromis niloticus is the main captured species (85% of a total number of landings in weight of 62.5 t.). Fishing is carried out in rowing boats, individually or in pairs. The fishing equipment used are gillnets and castnets. Gillnets were used actively, whereby the surface of the water is beaten with a stick to drive Tilapias towards nets as they have the ability to swim backwards. This fishing strategy was used in 64.7% of the fisheries, followed by castnets (31.1%) and by gillnets which were used less (4.2%). The fish is sold directly in the streets and fairs of the satellite-towns to middlemen or to bar owners. Three communities have different strategies in terms of fishing equipments, fishing spots and commercialization. Consequently, there are statistically significant differences in relation to the monthly income for each one of these communities.

scholarly journals Status of Reservoir Fisheries in China and Their Effects on Environment

2011 ◽  
pp. 259-276 ◽  
Author(s):  
Zhiqiang Guo ◽  
Zhongjie Li ◽  
Jiashou Liu ◽  
Fengyue Zhu ◽  
H. A. C. C. Perera
Keyword(s):  
Reservoir Fisheries

scholarly journals Present and future of reservoir fisheries 1n china

1993 ◽  
Vol 5 (4) ◽  
pp. 378-383
Author(s):  
Hu Chuanlin ◽  
◽  
Dong Fangyong
Keyword(s):  
Reservoir Fisheries

scholarly journals Productivity, Capital Mobilization and Moral Hazard in Fisheries Share Contracts: Lake Nasser, Egypt

2011 ◽  
Vol 1 (5) ◽  
pp. 183-193
Author(s):  
Cambria Finegold ◽  
Mohamed Shehata . ◽  
Olfat Anwar Habib .
Keyword(s):  
Risk Management ◽  
Developing Countries ◽  
Labour Productivity ◽  
Lake Nasser ◽  
Fishing Strategies ◽  
Close Supervision ◽  
Reservoir Fisheries ◽  
Economic Survey ◽  
Insight Into ◽  
International Research Project

As part of an international research project on reservoir fisheries productivity in developing countries, this paper examines contractual relations in the Lake Nasser fishery, seeking to understand why so many seemingly redundant contract types coexist and what effect they have on productivity. Based on the results of a socio-economic survey conducted in the fishery and drawing on the literature on agricultural sharecropping and share remuneration systems in fisheries, the paper analyses the roles of the different contracts observed in the Lake Nasser fishery. In particular, it discusses the incentives, limitations, and opportunities that these contracts offer to the different groups of actors (gear owners, license owners, crew members), and shows how these arrangements influence and shape the fishing strategies, capital mobilisation, and ultimately labour productivity of those different groups. While the debate on share contracts generally seeks to assess their efficiency relative to other types of contracts, this paper argues that the relevant question is not how efficient the contracts are, but what functions are served by the various co-existing contracts, and why different actors may choose each type. While the standard explanations of risk management and the impossibility of close supervision seem to provide some insight into this, it is also clear that the actors in the fishery use these contracts to mobilise capital and combine productive resources with other actors. This interlinking is a key function of the contracts, and the diversity of resource endowments and needs of the different actors helps explain the diversity of contract types.

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