scholarly journals The impact of alternative rebuilding strategies to rebuild overfished stocks

2016 ◽  
Vol 73 (9) ◽  
pp. 2190-2207 ◽  
Author(s):  
Chantel R. Wetzel ◽  
André E. Punt ◽  

Abstract Ending overfishing and rebuilding fish stocks to levels that provide for optimum sustainable yield is a concern for fisheries management worldwide. In the United States, fisheries managers are legally mandated to end overfishing and to implement rebuilding plans for fish stocks that fall below minimum stock size thresholds. Rebuilding plans should lead to recovery to target stock sizes within 10 years, except in situations where the life history of the stock or environmental conditions dictate otherwise. Federally managed groundfish species along the US West Coast have diverse life histories where some are able to rebuild quickly from overfished status, while others, specifically rockfish (Sebastes spp.), may require decades for rebuilding. A management strategy evaluation which assumed limited estimation error was conducted to evaluate the performance of alternative strategies for rebuilding overfished stocks for these alternative US West Coast life histories. Generally, the results highlight the trade-off between the reduction of catches during rebuilding vs. the length of rebuilding. The most precautionary rebuilding plans requiring the greatest harvest reduction resulted in higher average catches over the entire projection period compared with strategies that required a longer rebuilding period with less of a reduction in rebuilding catch. Attempting to maintain a 50% probability of rebuilding was the poorest performing rebuilding strategy for all life histories, resulting in a large number of changes to the rebuilding plan, increased frequency of failing to meet rebuilding targets, and higher variation in catch. The rebuilding plans that implemented a higher initial rebuilding probability (≥60%) for determining rebuilding fishing mortality and targets generally resulted in fewer changes to the rebuilding plans and rebuilt by the target rebuilding year, particularly for stocks with the longer rebuilding plans (e.g. rockfishes).

2020 ◽  
Vol 110 (11) ◽  
pp. 1628-1634 ◽  
Author(s):  
Calliope Holingue ◽  
Luther G. Kalb ◽  
Kira E. Riehm ◽  
Daniel Bennett ◽  
Arie Kapteyn ◽  
...  

Objectives. To assess the impact of the COVID-19 pandemic on mental distress in US adults. Methods. Participants were 5065 adults from the Understanding America Study, a probability-based Internet panel representative of the US adult population. The main exposure was survey completion date (March 10–16, 2020). The outcome was mental distress measured via the 4-item version of the Patient Health Questionnaire. Results. Among states with 50 or more COVID-19 cases as of March 10, each additional day was significantly associated with an 11% increase in the odds of moving up a category of distress (odds ratio = 1.11; 95% confidence interval = 1.01, 1.21; P = .02). Perceptions about the likelihood of getting infected, death from the virus, and steps taken to avoid infecting others were associated with increased mental distress in the model that included all states. Individuals with higher consumption of alcohol or cannabis or with history of depressive symptoms were at significantly higher risk for mental distress. Conclusions. These data suggest that as the COVID-19 pandemic continues, mental distress may continue to increase and should be regularly monitored. Specific populations are at high risk for mental distress, particularly those with preexisting depressive symptoms.


2020 ◽  
Vol 48 (1) ◽  
pp. 35-59
Author(s):  
Andrzej Purat ◽  
Paweł Bielicki

The main goal of our considerations is to analyse the most important conditions and dependencies that characterise Russian-Iranian relations from the beginning of the Arab Spring to the present day. We pay special attention to the infl uence of the United States on the development of diplomatic contacts between Moscow and Tehran and the conflict in Syria.Firstly, we describe the history of relations between the two countries after 1979 and the takeover of power by the religious leader, Ayatollah Khomeini, who, despite adopting an anti-Western course in international politics, did not show a desire to get closer to the Soviet neighbour. Secondly, we describe the relations of both countries from the collapse of the USSR to 2011, focusing on Iran’s role in influencing political processes in the post-Soviet area. Thirdly, we present the position of Russia and the Middle East about the war in Syria and the role of the Kurds. We also examine the impact of US policy on establishing links between Russia and Iran. Moreover, we raise economic issues and Moscow’s growing desire to dominate the Iranian economy and army.In the summary, we try to answer the question of what Russian-Iranian relations will look like in the future, especially in the era of the gradually ending war in Syria. Importantly, we refer to the issue of the US anti-Iranian rhetoric reinforced by Donald Trump and how it can influence the further strengthening of the Russia-Iran alliance.


2019 ◽  
Vol 77 (1) ◽  
pp. 188-199 ◽  
Author(s):  
Rebecca L Selden ◽  
James T Thorson ◽  
Jameal F Samhouri ◽  
Steven J Bograd ◽  
Stephanie Brodie ◽  
...  

Abstract Fishing communities are increasingly required to adapt to environmentally driven changes in the availability of fish stocks. Here, we examined trends in the distribution and biomass of five commercial target species (dover sole, thornyheads, sablefish, lingcod, and petrale sole) on the US west coast to determine how their availability to fishing ports changed over 40 years. We show that the timing and magnitude of stock declines and recoveries are not experienced uniformly along the coast when they coincide with shifts in species distributions. For example, overall stock availability of sablefish was more stable in southern latitudes where a 40% regional decline in biomass was counterbalanced by a southward shift in distribution of >200 km since 2003. Greater vessel mobility and larger areal extent of fish habitat along the continental shelf buffered northerly ports from latitudinal changes in stock availability. Landings were not consistently related to stock availability, suggesting that social, economic, and regulatory factors likely constrain or facilitate the capacity for fishers to adapt to changes in fish availability. Coupled social–ecological analyses such as the one presented here are important for defining community vulnerability to current and future changes in the availability of important marine species.


Author(s):  
O.Y. Cheban ◽  
A.S. Kraskova

It is proven in the paper that the chosen topic is relevant due to the impact of China and the EU on the negotiations about the regulation of the Iranian nuclear program’s issue. In the article, it is done a comparative analysis of the policy of the EU and China regarding the regulation of the Iranian nuclear program’s problem. It is also mentioned in the paper that since the time of the US presidential administration of Donald Trump, the EU and China have been seen as valuable actors in resolving the Iranian nuclear program’s issue. For this reason, the main purpose of the work is a review of the influence that China’s and EU’s policies regarding the development of the nuclear program of the Islamic Republic of Iran (IRI) exert on European security. The history of China-Iran relations in the nuclear sphere and the important role of China in the development of the Iranian nuclear program is mentioned in the paper. It is also noted that the fact that the EU countries are partners or allies of the United States, which is the main rival of the IRI, has complicated the dialogue between the European Union and Iran. It is shown in the paper that during Mahmud Ahmadinejad’s presidency, the Iranian nuclear program was not controlled by the international community, and because of that China supported sanctions of the UN Security Council against Iran. As it is mentioned in the article, until the end of the 2000s, the EU, as well as the People’s Republic of China (PRC), did not support the US policy toward Iran. The Iranian-Chinese relations in the nuclear field were studied. It is mentioned that despite the fact that China is interested in exporting Iranian energy resources, Beijing will never accept Iran’s possession of nuclear weapons. It is assumed that the fact that China does not support the nuclear weapons status of Iran gives it the opportunity to cooperate with the EU in case Iran decides to acquire nuclear weapons. It is noticed that China had a major impact on the negotiations related to signing the Joint Comprehensive Plan of Action (JCPOA), i. e. the nuclear agreement with Iran. The further actions of the EU and the PRC after the dissolution of the JCPOA are mentioned in the paper. The scenarios of further development of the situation around the Iranian nuclear program were reviewed. As a result of the research, it is concluded that China and the EU have played a significant role in achieving the JCPOA and conducting diplomatic negotiations with Iran. The strengthening of Beijing’s role as a key partner of Teheran and the decrease of the EU’s impact on Iran’s foreign policy were mentioned in the paper.


Zootaxa ◽  
2021 ◽  
Vol 4949 (2) ◽  
pp. 353-362
Author(s):  
JÖRG A. OTT ◽  
PHILIPP PRÖTS

A new genus of the marine Stilbonematinae (Nematoda, Desmodoridae) is described from the Pacific coast of the United States of America. The worms inhabit the sulfidic sediment among the roots of the surfgrass Phyllospadix sp. in the rocky intertidal. The ectosymbiotic coat is of a new type for Stilbonematinae. It consists of rod-shaped bacteria pointed at both poles densely attached with one pole to the host cuticle. This is the first report of this symbiotic nematode subfamily from the US West Coast. 


Author(s):  
Terence Young ◽  
Alan MacEachern ◽  
Lary Dilsaver

This essay explores the evolving international relationship of the two national park agencies that in 1968 began to offer joint training classes for protected-area managers from around the world. Within the British settler societies that dominated nineteenth century park-making, the United States’ National Park Service (NPS) and Canada’s National Parks Branch were the most closely linked and most frequently cooperative. Contrary to campfire myths and nationalist narratives, however, the relationship was not a one-way flow of information and motivation from the US to Canada. Indeed, the latter boasted a park bureaucracy before the NPS was established. The relationship of the two nations’ park leaders in the half century leading up to 1968 demonstrates the complexity of defining the influences on park management and its diffusion from one country to another.


Author(s):  
Aref Emamian

This study examines the impact of monetary and fiscal policies on the stock market in the United States (US), were used. By employing the method of Autoregressive Distributed Lags (ARDL) developed by Pesaran et al. (2001). Annual data from the Federal Reserve, World Bank, and International Monetary Fund, from 1986 to 2017 pertaining to the American economy, the results show that both policies play a significant role in the stock market. We find a significant positive effect of real Gross Domestic Product and the interest rate on the US stock market in the long run and significant negative relationship effect of Consumer Price Index (CPI) and broad money on the US stock market both in the short run and long run. On the other hand, this study only could support the significant positive impact of tax revenue and significant negative impact of real effective exchange rate on the US stock market in the short run while in the long run are insignificant. Keywords: ARDL, monetary policy, fiscal policy, stock market, United States


Author(s):  
Danylo Kravets

The aim of the Ukrainian Bureau in Washington was propaganda of Ukrainian question among US government and American publicity in general. Functioning of the Bureau is not represented non in Ukrainian neither in foreign historiographies, so that’s why the main goal of presented paper is to investigate its activity. The research is based on personal papers of Ukrainian diaspora representatives (O. Granovskyi, E. Skotzko, E. Onatskyi) and articles from American and Ukrainian newspapers. The second mass immigration of Ukrainians to the US (1914‒1930s) has often been called the «military» immigration and what it lacked in numbers, it made up in quality. Most immigrants were educated, some with college degrees. The founder of the Ukrainian Bureau Eugene Skotzko was born near Western Ukrainian town of Zoloczhiv and immigrated to the United States in late 1920s after graduating from Lviv Polytechnic University. In New York he began to collaborate with OUN member O. Senyk-Hrabivskyi who gave E. Skotzko task to create informational bureau for propaganda of Ukrainian case. On March 23 1939 the Bureau was founded in Washington D. C. E. Skotzko was an editor of its Informational Bulletins. The Bureau biggest problem was lack of financial support. It was the main reason why it stopped functioning in May 1940. During 14 months of functioning Ukrainian Bureau in Washington posted dozens of informational bulletins and send it to hundreds of addressees; E. Skotzko, as a director, personally wrote to American governmental institutions and foreign diplomats informing about Ukrainian problem in Europe. Ukrainian Bureau activity is an inspiring example for those who care for informational policy of modern Ukraine.Keywords: Ukrainian small encyclopedia, Yevhen Onatsky, journalism, worldview, Ukrainian state. Keywords: Ukrainian Bureau in Washington, Eugene Skotzko, public opinion, history of journalism, diaspora.


Horticulturae ◽  
2020 ◽  
Vol 6 (4) ◽  
pp. 82
Author(s):  
Amandeep Kaur ◽  
Louise Ferguson ◽  
Niels Maness ◽  
Becky Carroll ◽  
William Reid ◽  
...  

Pecan is native to the United States. The US is the world’s largest pecan producer with an average yearly production of 250 to 300 million pounds; 80 percent of the world’s supply. Georgia, New Mexico, Texas, Arizona, Oklahoma, California, Louisiana, and Florida are the major US pecan producing states. Pecan trees frequently suffer from spring freeze at bud break and bloom as the buds are quite sensitive to freeze damage. This leads to poor flower and nut production. This review focuses on the impact of spring freeze during bud differentiation and flower development. Spring freeze kills the primary terminal buds, the pecan tree has a second chance for growth and flowering through secondary buds. Unfortunately, secondary buds have less bloom potential than primary buds and nut yield is reduced. Spring freeze damage depends on severity of the freeze, bud growth stage, cultivar type and tree age, tree height and tree vigor. This review discusses the impact of temperature on structure and function of male and female reproductive organs. It also summarizes carbohydrate relations as another factor that may play an important role in spring growth and transition of primary and secondary buds to flowers.


2020 ◽  
Vol 27 (4) ◽  
pp. 449-465
Author(s):  
Stanley N. Katz ◽  
Leah Reisman

AbstractThis article discusses the impact of the COVID-19 pandemic and the Black Lives Matter movement on the arts and cultural sector in the United States, placing the 2020 crises in the context of the United States’s historically decentralized approach to supporting the arts and culture. After providing an overview of the United States’s private, locally focused history of arts funding, we use this historical lens to analyze the combined effects of the pandemic and Black Lives Matter movement on a single metropolitan area – Philadelphia, Pennsylvania. We trace a timeline of key events in the national and local pandemic response and the reaction of the arts community to the Black Lives Matter movement, arguing that the nature of these intersecting responses, and their fallout for the arts and cultural sector, stem directly from weaknesses in the United States’s historical approach to administering the arts. We suggest that, in the context of widespread organizational vulnerability caused by the pandemic, the United States’s decentralized approach to funding culture also undermines cultural organizations’ abilities to respond to issues of public relevance and demonstrate their civic value, threatening these organizations’ legitimacy.


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