Effect of food shortage and temperature on age 0+ salmonids: a contribution to predict the effects of climate change

2018 ◽  
Vol 92 (3) ◽  
pp. 642-652 ◽  
Author(s):  
E. Arevalo ◽  
S. Panserat ◽  
I. Seiliez ◽  
A. Larrañaga ◽  
A. Bardonnet
2014 ◽  
Vol 34 (5) ◽  
pp. 639-646 ◽  
Author(s):  
Liane Stumpf ◽  
Wagner C. Valenti ◽  
Fernando Castillo Díaz ◽  
Laura Susana López Greco ◽  
Verónica Elizabeth Viau

Author(s):  
Ali Syed ◽  
Urooj Afshan Jabeen

Research on the impact of climate change on agriculture and food security is important, especially in the agricultural economies, not only to know the severity of impact but also the policies to be adapted to halt climate change and the technology to be used to mitigate the impact of climate change. The study was conducted in Kapiri Mposhi district of Central Province in Zambia to find out the impact of climate change on agriculture and food security. The objectives of study include to know the intensity of climate change and its impact on area under cultivation, late sowing of seed and damage of seed due to lack of water, fertilizer absorption reduction, food shortage, livestock, and productivity. The chapter also focuses on the sources of credit to the farmers.


2019 ◽  
Vol 116 ◽  
pp. 00100
Author(s):  
Magdalena Wróbel ◽  
Justyna Rybak

In this study we assessed the metabolic reaction of mealworms to toxic metals Cu and Pb alone or delivered with carrots as an additional source of water and minerals. We compared our results with metabolic reaction of mealworms to food shortage. We recorded the highest morality and mass loss in culture contaminated with Pb (in relation to Cu contamination) proving the greatest impact of this metal on metabolism of mealworms. The great decrease in protein, carbohydrates and lipid content was observed in this variant (mealworms fed with food contaminated with Pb) as well. The slight positive effect of carrot addition was observed for larvae fed with both metals. Starvation had similar but slighter effect as Pb on metabolism as starved larvae were characterised by high, but not the highest decrease of protein, carbohydrates and lipid content. The studies proved that metal contamination could have great impact on metabolism of mealworms which is a key issue when we consider these insects as a source of proteins in place of vertebrates.


Author(s):  
Mina Nath Paudel

In Nepal, impacts of climate change can be observed in varying levels of climate that are prevalent in diversified topography and vegetation. Broadly speaking, there are impacts of climate change in the Terai lowlands, the mid-hill valleys and mountains, and in the high Himalayas. Nepal is a unique climatic laboratory for studying the impacts of climate change.Sixty-five percent of the Nepalese people engage in agriculture and more than 32% of Gross Domestic Product (GDP) comes from it. There are evidences of climate change in frequently changing monsoonal patterns resulting in droughts, floods, landslides, and other unexpected results that impair subsistence agriculture systems in the country. As a result, there is chronic food shortage in remote hills, and in the mountains, and the Terai, the grain bowl of Nepal, has been hit by food shortage. To date, around 3.9 million people have suffered from hunger and poverty. There are reports that major food crops of rice, maize, and wheat production have declined due to changes in monsoon patterns, insurgence of new pests, and decline in soil productivity. Efforts have been initiated to adopt drought and pest tolerant varieties, changes in planting time, and method of plantings as strategies for adaptation to climate change in agriculture. This paper attempts to highlight adaptation as a strategy to address issues of climate changes from the perspective of Nepalese agriculture.DOI: http://dx.doi.org/10.3126/hn.v11i1.7219 Hydro Nepal Special Issue: Conference Proceedings 2012 pp.81-85


2019 ◽  
Vol 287 (3) ◽  
pp. 252-262 ◽  
Author(s):  
R. J. Johnson ◽  
P. Stenvinkel ◽  
P. Andrews ◽  
L. G. Sánchez‐Lozada ◽  
T. Nakagawa ◽  
...  

Author(s):  
Nkiru Theresa Meludu ◽  
Toyin Abolade

AbstractCoronavirus disease of 2019 (COVID-19) is a current pandemic causing lockdown of cities and countries. The nature of this disease and the global cases are still considered as deadly all over the world. Analogous was drawn between the current COVID-19 pandemic and some of the other contemporary crises of the world as regards to climate change in addition to food shortage. Also, Survey Monkey instrument was used to generate emperical evidences from 514 respondents on covid-19 awareness and the effect on food security. Effects of diseases on climate change, such as the increasing frequency and strength of extreme weather events or the expanding range and spread of diseases was considered. Then, the relationship between the COVID-19 pandemic and climate change was investigated. Prior to the pandemic, climate change already had adverse effects on agriculture and vice versa, which led to food insecurity. The need for fruits as well as leafy and root vegetables in peri-urban and urban areas is increasing, as well as the food shortage. A drop in agricultural production will be expected in the future if the pandemic continues for a few more months. The perception and adherence to the preventive measures for this pandemic were determined to reduce its spread and lessen its effect on agricultural production as well as to improve food security


2020 ◽  
Vol 7 (7) ◽  
pp. 200638
Author(s):  
Solange Duruz ◽  
Elia Vajana ◽  
Alexander Burren ◽  
Christine Flury ◽  
Stéphane Joost

The transhumance system, which consists in moving animals to high mountain pastures during summer, plays a considerable role in preserving both local biodiversity and traditions, as well as protecting against natural hazard. In cows, particularly, milk production is observed to decline as a response to food shortage and climatic stress, leading to atypical lactation curves that are barely described by current lactation models. Here, we relied on 5 million monthly milk records from over 200 000 Braunvieh and Original Braunvieh cows to devise a new model accounting for transhumance, and test the influence of environmental, physiological and morphological factors on cattle productivity. Counter to expectations, environmental conditions in the mountain showed a globally limited impact on milk production during transhumance, with cows in favourable conditions producing only 10% more compared with cows living in detrimental conditions, and with precipitation in spring and altitude revealing to be the most production-affecting variables. Conversely, physiological factors such as lactation number and pregnancy stage presented an important impact over the whole lactation cycle with 20% difference in milk production, and alter the way animals respond to transhumance. Finally, the considered morphological factors (cow height and foot angle) presented a smaller impact during the whole lactation cycle (10% difference in milk production). The present findings help to anticipate the effect of climate change and to identify problematic environmental conditions by comparing their impact with the effect of factors that are known to influence lactation.


2022 ◽  
pp. 1504-1518
Author(s):  
Ali Syed ◽  
Urooj Afshan Jabeen

Research on the impact of climate change on agriculture and food security is important, especially in the agricultural economies, not only to know the severity of impact but also the policies to be adapted to halt climate change and the technology to be used to mitigate the impact of climate change. The study was conducted in Kapiri Mposhi district of Central Province in Zambia to find out the impact of climate change on agriculture and food security. The objectives of study include to know the intensity of climate change and its impact on area under cultivation, late sowing of seed and damage of seed due to lack of water, fertilizer absorption reduction, food shortage, livestock, and productivity. The chapter also focuses on the sources of credit to the farmers.


2019 ◽  
Vol 3 (6) ◽  
pp. 723-729
Author(s):  
Roslyn Gleadow ◽  
Jim Hanan ◽  
Alan Dorin

Food security and the sustainability of native ecosystems depends on plant-insect interactions in countless ways. Recently reported rapid and immense declines in insect numbers due to climate change, the use of pesticides and herbicides, the introduction of agricultural monocultures, and the destruction of insect native habitat, are all potential contributors to this grave situation. Some researchers are working towards a future where natural insect pollinators might be replaced with free-flying robotic bees, an ecologically problematic proposal. We argue instead that creating environments that are friendly to bees and exploring the use of other species for pollination and bio-control, particularly in non-European countries, are more ecologically sound approaches. The computer simulation of insect-plant interactions is a far more measured application of technology that may assist in managing, or averting, ‘Insect Armageddon' from both practical and ethical viewpoints.


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