scholarly journals Bioeconomic model of spatial fishery management in developing countries

2012 ◽  
Vol 17 (2) ◽  
pp. 145-161 ◽  
Author(s):  
Wisdom Akpalu ◽  
Godwin K. Vondolia
Keyword(s):  
Developing Countries ◽  
Fishery Management ◽  
Marine Reserve ◽  
Social Planner ◽  
Bioeconomic Model ◽  
Ad Valorem Tax ◽  
Fish Stocks ◽  
Using Data ◽  
Spatial Externality ◽  
Distant Water Fishing

AbstractFishers in developing countries do not have the resources to acquire advanced technologies to exploit offshore fish stocks. As a result, the United Nations Convention on the Law of the Sea requires countries to sign partnership agreements with distant water fishing nations to exploit offshore stocks. However, for migratory stocks, the offshore may serve as a natural marine reserve (i.e., a source) to the inshore (i.e., sink); hence these partnership agreements generate a spatial externality. In this paper, we present a bioeconomic model in which a social planner uses a landing tax (ad valorem tax) to internalize this spatial externality. We found that the tax must reflect the biological connectivity between the two patches, intrinsic growth rate, the price of fish and cost per unit effort. The results are empirically illustrated using data on Ghana.

scholarly journals Fishery-dependent information and the ecosystem approach: what role can fishers and their knowledge play in developing countries?

2011 ◽  
Vol 68 (8) ◽  
pp. 1805-1808 ◽  
Author(s):  
Sebastian Mathew
Keyword(s):  
Developing Countries ◽  
Fishery Management ◽  
Habitat Degradation ◽  
Good Practice ◽  
Ecosystem Approach ◽  
Anthropogenic Factors ◽  
Industrialized Countries ◽  
Fish Stocks ◽  
Cultural Aspects ◽  
The Impact

Abstract Mathew, S. 2011. Fishery-dependent information and the ecosystem approach: what role can fishers and their knowledge play in developing countries? – ICES Journal of Marine Science, 68: 1805–1808. An ecosystem approach to fishery management is as much a mechanism to deal with the impact of fishing on targeted, associated, and dependent fish stocks, and on the habitat, as it is to deal with the impact of habitat degradation from natural and anthropogenic factors on fishing. In developing countries, often with little institutional capacity for generating timely and reliable information for managing fisheries, effective integration of the knowledge possessed by fishers and their communities regarding, for example, oceanographic, biological, economic, social, and cultural aspects can contribute to an ecosystem approach to fisheries. The challenge is to identify and validate such knowledge and to create policy and legal space to integrate it into management, also drawing upon good practice in industrialized countries. An attempt is made to identify such knowledge, to discuss its salient aspects, and to look at the conditions under which its practical value can be enhanced and integrated into formal fishery-management systems in developing countries.

scholarly journals Impacts of Electricity Outages in Urban Households in Developing Countries: A Case of Accra, Ghana

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3676
Author(s):  
Paul Nduhuura ◽  
Matthias Garschagen ◽  
Abdellatif Zerga
Keyword(s):  
Developing Countries ◽  
Social Services ◽  
Large Family ◽  
Household Survey ◽  
Limited Attention ◽  
Electricity Supply ◽  
High Exposure ◽  
Urban Households ◽  
Using Data ◽  
Family Setting

Many developing countries in Africa face a “double tragedy” when it comes to electrification. Electricity access rates are low, while those who have access to electricity face frequent outages. There are ongoing efforts aimed at increasing access to electricity on the continent. However, the need to improve the reliability of electricity supply receives limited attention. Unreliable electricity impacts users by limiting electricity utilization and the benefits that should accrue from having an electricity connection. Using data from 496 household survey questionnaires, this study examines the impacts of electricity outages in urban households in Accra, Ghana. The study applies correlation and regression analyses to identify which household characteristics are associated with or predict households reporting outage impacts. Outages were found to impact household safety/security, access to food, and access to social services and were found to cause appliance damage as well. Factors that are significantly correlated with reporting certain outage impacts include respondent’s annual income and employment status, frequency of electricity outages, and household size. Significant predictors of reporting outage impacts are socioeconomic disadvantage, high exposure to outages, and living in a large family setting. The study’s findings underscore the need for interventions to eliminate, or at least minimize, electricity supply interruptions in developing countries if sustainable social and economic development is to be achieved.

scholarly journals Episodes of non-employment among immigrants from developing countries in Canada

2013 ◽  
Vol 40 (1-2) ◽  
pp. 9 ◽  
Author(s):  
Said Ahmed Aboubacar ◽  
Nong Zhu
Keyword(s):  
Developing Countries ◽  
Labour Market ◽  
Average Duration ◽  
Developed Countries ◽  
Income Dynamics ◽  
Using Data ◽  
Labour Market Mobility

Using data from the Survey of Labour and Income Dynamics (SLID), we analyze non-employment episodes for immigrants from developing countries, and compare their situation to that of immigrants from developed countries and Canadian-born individuals between 1996 and 2006. The methods used allowed us to draw the following conclusion: significant differences exist between these three groups in labour market mobility, the average duration of a non-employment episode, and the factors that affect the propensity to exit from a nonemployment episode. These differences demonstrate a particular disadvantage for immigrants from developing countries. In fact, they tend to spend more time in non-employment episodes compared to their counterparts from developed countries, and compared to Canadian-born individuals.

scholarly journals From Safety Net to Point of No Return—Are Small-Scale Inland Fisheries Reaching Their Limits?

2020 ◽  
Vol 12 (18) ◽  
pp. 7299
Author(s):  
Pina Lena Lammers ◽  
Torsten Richter ◽  
Jasmin Mantilla-Contreras
Keyword(s):  
Sustainable Management ◽  
Fishery Management ◽  
Safety Net ◽  
Small Scale ◽  
Current Function ◽  
Fish Stocks ◽  
Inland Fisheries ◽  
Point Of No Return ◽  
Agricultural Yields ◽  
Near Future

Small-scale inland fisheries (SSIF) are a livelihood opportunity for millions of people in developing countries. Understanding the economic, ecological, political and social impacts fishers are coping with can clarify weaknesses and challenges in the fishery management. Using the SSIF at Lake Alaotra, Madagascar, as an example, we analyzed the development and fishers’ perception of, and adaptation strategies to, change. We surveyed fish catches to assess the state of fish stocks and conducted interviews to understand fishers’ livelihood, problems, behavior and attitudes. Our results show that the fishery sector of Lake Alaotra has grown dramatically although fish catches have fallen sharply. Changes in species composition and low reproduction rates reflect the fishing pressure. A point of no return seems near, as decreasing agricultural yields force farmers to enter the fishery sector as a form of livelihood diversification. Lake Alaotra reflects an alarming trend which can already be seen in many regions of the world and may affect a growing number in the near future. The Alaotran fisheries demonstrate that SSIF’s ability to provide livelihood alternatives under conditions of insecurity will become increasingly important. It further highlights that the identification of ongoing livelihood dynamics in order to disclose possible poverty trap mechanisms and to understand fisheries’ current function is essential for sustainable management.

How to Close the Gender Gap in Political Participation: Lessons from Matrilineal Societies in Africa

2019 ◽  
pp. 1-25 ◽  
Author(s):  
Amanda Lea Robinson ◽  
Jessica Gottlieb
Keyword(s):  
Developing Countries ◽  
Political Participation ◽  
Intergenerational Transmission ◽  
Gender Gap ◽  
Qualitative Data ◽  
Cultural Practice ◽  
Material Resources ◽  
Female Line ◽  
Using Data

AbstractWhile gender gaps in political participation are pervasive, especially in developing countries, this study provides systematic evidence of one cultural practice that closes this gap. Using data from across Africa, this article shows that matrilineality – tracing kinship through the female line – is robustly associated with closing the gender gap in political participation. It then uses this practice as a lens through which to draw more general inferences. Exploiting quantitative and qualitative data from Malawi, the authors demonstrate that matrilineality's success in improving outcomes for women lies in its ability to sustain more progressive norms about the role of women in society. It sets individual expectations about the gendered beliefs and behaviors of other households in the community, and in a predictable way through the intergenerational transmission of the practice. The study tests and finds evidence against two competing explanations: that matrilineality works through its conferral of material resources alone, or by increasing education for girls.

Testing the bargaining hypothesis in the manufacturing sector in developing countries

1987 ◽  
Vol 41 (4) ◽  
pp. 609-638 ◽  
Author(s):  
Stephen J. Kobrin
Keyword(s):  
Developing Countries ◽  
Host Country ◽  
Bargaining Power ◽  
Manufacturing Sector ◽  
National Study ◽  
Global Integration ◽  
Using Data ◽  
Relative Bargaining Power ◽  
Cross National Study ◽  
Over Time

The bargaining power model of HC–MNC (host country–multinational corporation) interaction conceives of economic nationalism in terms of rational self-interest and assumes both inherent conflict and convergent objectives. In extractive industries, there is strong evidence that outcomes are a function of relative bargaining power and that as power shifts to developing HCs over time, the bargain obsolesces. A cross-national study of the bargaining model, using data from 563 subsidiaries of U.S. manufacturing firms in forty-nine developing countries, indicates that while the bargaining framework is an accurate model of MNC–host country relationships, manufacturing is not characterized by the inherent, structurally based, and secular obsolescence that is found in the natural resource industries. Shifts in bargaining power to HCs may take place when technology is mature and global integration limited. In industries characterized by changing technologies and the spread of global integration, the bargain will obsolesce very slowly and the relative power of MNCs may even increase over time.

Estimation of Selection Differentials from Fish Scales: A Step Towards Evaluating Genetic Alteration of Fish Size in Exploited Populations

1994 ◽  
Vol 51 (4) ◽  
pp. 774-783 ◽  
Author(s):  
Loren M. Miller ◽  
Anne R. Kapuscinski
Keyword(s):  
Fishery Management ◽  
Population Characteristics ◽  
Management Tool ◽  
Fish Scales ◽  
Selectivity Curve ◽  
Genetic Risks ◽  
Using Data ◽  
Related Trait ◽  
Selection Differentials ◽  
Age And Sex

We developed a model to predict genetic response to selection imposed by a size-selective fishery. Use of our model provides estimates of selection as a function of heritability and overall selection differential imposed against a size-related trait, length of a scale radius from the focus to a given annulus (radius n). Selection differentials were estimated using data from the walleye (Stizostedion vitreum) fishery in Red Lakes, Minnesota. Overall selection differentials, incorporating selection differentials estimated by age and sex, and weighted by the contribution to spawning, were negative for the 1955 spawning population and positive for that of 1958. Directions of selection differentials, estimated by age and sex, generally corresponded to expected directions of selection based on the shape of the gillnet selectivity curve for walleye, suggesting that scale radii are useful for estimating selection against size traits. Results indicated that selective effects of gear may be surprisingly complex and population characteristics must be well understood before changes in fishery management are considered. We suggest that measurement of overall selection differentials alone may provide a useful management tool for indicating genetic risks of selective fisheries.

scholarly journals Flawed evidence supporting the Metabolic Theory of Ecology may undermine goals of ecosystem-based fishery management: the case of invasive Indo-Pacific lionfish in the western Atlantic

2016 ◽  
Vol 74 (5) ◽  
pp. 1256-1267
Author(s):  
Diego Valderrama ◽  
KathrynAnn H. Fields
Keyword(s):  
Fishery Management ◽  
Environmental Temperature ◽  
Growth Parameters ◽  
Fish Mortality ◽  
Natural Mortality ◽  
Metabolic Theory ◽  
Prey Fish ◽  
Western Atlantic ◽  
Fish Stocks ◽  
Metabolic Theory Of Ecology

Given its ability to yield predictions for very diverse phenomena based only on two parameters—body size and temperature—the Metabolic Theory of Ecology (MTE) has earned a prominent place among ecology’s efficient theories. In a seminal article, the leading proponents of the MTE claimed that the theory was supported by evidence from Pauly’s (On the interrelationships between natural mortality, growth parameters, and mean environmental temperature in 175 fish stocks. Journal Du Conseil International Pour L’Exploration de la mer 39:175–192) dataset on natural mortality, biomass, and environmental temperature for 175 fish stocks spanning tropical, temperate, and polar locations. We demonstrate that the evidence presented by the proponents of the MTE is flawed because it fails to account for the fact that Pauly re-estimated environmental temperatures for polar fish as ‘physiologically effective temperatures’ to correct for their ‘abnormally’ high natural (mass-corrected) mortalities, which on average turned out to be similar to (rather than lower than) the mortalities recorded for temperate fish. Failing to account for these modifications skews the coefficients from MTE regression models and wrongly validates predictions from the theory. It is important to point out these deficiencies given the broad appeal of the MTE as a theoretical framework for applied ecological research. In a recent application, the MTE was used to estimate biomass production rates of prey fish in a model of invasive Indo-Pacific lionfish (Pterois volitans and P. miles) predation in Bahamian reefs. We show that the MTE coefficients may lead to a drastic overestimation of prey fish mortality and productivity rates, leading to erroneous estimations of target densities for ecological control of lionfish stocks. A set of robust mortality-weight coefficients is proposed as an alternative to the MTE.

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