Fertility and the Food Quality of Wetland Plants: A Test of the Resource Availability Hypothesis

Oikos ◽  
1990 ◽  
Vol 59 (3) ◽  
pp. 373 ◽  
Author(s):  
S. J. McCanny ◽  
P. A. Keddy ◽  
T. J. Arnason ◽  
C. L. Gaudet ◽  
D. R. J. Moore ◽  
...  
Nutrients ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 2667
Author(s):  
Kevin B. Comerford ◽  
Yanni Papanikolaou ◽  
Julie Miller Jones ◽  
Judith Rodriguez ◽  
Joanne Slavin ◽  
...  

Carbohydrate-containing crops provide the bulk of dietary energy worldwide. In addition to their various carbohydrate forms (sugars, starches, fibers) and ratios, these foods may also contain varying amounts and combinations of proteins, fats, vitamins, minerals, phytochemicals, prebiotics, and anti-nutritional factors that may impact diet quality and health. Currently, there is no standardized or unified way to assess the quality of carbohydrate foods for the overall purpose of improving diet quality and health outcomes, creating an urgent need for the development of metrics and tools to better define and classify high-quality carbohydrate foods. The present report is based on a series of expert panel meetings and a scoping review of the literature focused on carbohydrate quality indicators and metrics produced over the last 10 years. The report outlines various approaches to assessing food quality, and proposes next steps and principles for developing improved metrics for assessing carbohydrate food quality. The expert panel concluded that a composite metric based on nutrient profiling methods featuring inputs such as carbohydrate–fiber–sugar ratios, micronutrients, and/or food group classification could provide useful and informative measures for guiding researchers, policymakers, industry, and consumers towards a better understanding of carbohydrate food quality and overall healthier diets. The identification of higher quality carbohydrate foods could improve evidence-based public health policies and programming—such as the 2025–2030 Dietary Guidelines for Americans.


2021 ◽  
pp. 1-8
Author(s):  
Julie Perron ◽  
Sonia Pomerleau ◽  
Pierre Gagnon ◽  
Joséane Gilbert-Moreau ◽  
Simone Lemieux ◽  
...  

Abstract Objective: The Food Quality Observatory was created in the province of Quebec (Canada) in 2016. In this study, the Observatory aimed to generate a methodology to (1) test the use of sales data combined with nutrient values to characterise the nutritional composition of ready-to-eat (RTE) breakfast cereals offered and purchased in the province of Quebec (Canada) and (2) verify the extent to which a front-of-pack label based on the percentage of daily value (DV) for total sugar, as a strategy to improve the food supply, would be distributed in this food category. Design: Nutritional information were obtained by purchasing each RTE breakfast cereal available in the Greater Montreal area. Cereals were then classified according to their processing type. Setting: The nutritional values of 331 RTE breakfast cereals available in Quebec were merged with sales data covering the period between May 2016 and May 2017. A total of 306 products were successfully cross-referenced. Results: Granola and sweetened cereals were the most available (36·6 % and 19·6 %, respectively) and purchased (19·8 % and 40·9 % of sales, respectively). When compared with other types of cereals, granola cereals had a higher energy, fat, saturated fat, protein content and a lower Na content. A larger proportion of chocolate (65 %) and sweetened cereals (49 %) were above 15 % of the DV for sugar. Conclusions: This study showed that the methodology developed generates important data to monitor nutritional quality of the food supply and ultimately contribute to improve the nutritional quality of processed foods.


2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Maggie M. Hantak ◽  
Bryan S. McLean ◽  
Daijiang Li ◽  
Robert P. Guralnick

AbstractAnthropogenically-driven climate warming is a hypothesized driver of animal body size reductions. Less understood are effects of other human-caused disturbances on body size, such as urbanization. We compiled 140,499 body size records of over 100 North American mammals to test how climate and human population density, a proxy for urbanization, and their interactions with species traits, impact body size. We tested three hypotheses of body size variation across urbanization gradients: urban heat island effects, habitat fragmentation, and resource availability. Our results demonstrate that both urbanization and temperature influence mammalian body size variation, most often leading to larger individuals, thus supporting the resource availability hypothesis. In addition, life history and other ecological factors play a critical role in mediating the effects of climate and urbanization on body size. Larger mammals and species that utilize thermal buffering are more sensitive to warmer temperatures, while flexibility in activity time appears to be advantageous in urbanized areas. This work highlights the value of using digitized, natural history data to track how human disturbance drives morphological variation.


Author(s):  
L Rooney ◽  
E Suhendro
Keyword(s):  

2020 ◽  
Vol 6 (2) ◽  
pp. 1
Author(s):  
Soomro Dr. Raheem Bux ◽  
Brohi Noor Ahmed ◽  
Memon Khair Muhammad ◽  
Gilal Rehman Gul

The culinary business is being increased rapidly in Pakistan. Usually, Pakistani consumers prefer to eat meals at homes cooked by female members owing to cultural, social and religious reason. In order to bridge up the gap in existing hospitality literature, the objective of this research manuscript is to find out the relation among dimensions of quality (food quality, service quality and quality of physical environment), customer satisfaction, restaurant image, behavioral intentions and customer perceived value in casual restaurants in Sukkur city. Data for this research study have been collected from customers of restaurants located in Sukkur city through convenience sampling. SPSS (24) and Smart PLS (3.0) versions were used for data analysis. Service quality dimensions of causal restaurant were found important determinants of the restaurant image and customer perceived value followed by physical environment and service quality; whereas, the physical environment quality was not found to be a significant factor of perceived value of customer. Additionally, food quality is measured as an important restaurant’s product. Another outcome of the present study exhibited that quality of physical environment holds a substantial positive effect on restaurant image. The findings indicate quality in food and service is highly important to satisfy customers and make their behavior positive about casual restaurant. Further, as an average temperature remains above 400 in Sukkur city, internal environment of the restaurant is significant as it will affect the mood and perception of customers when they dine in the casual restaurant.


2018 ◽  
Vol 10 (1) ◽  
pp. 95
Author(s):  
Ivony Tresia

Thisdstudy originated from the resultsiofiprevious studies where there were problems regarding the process of managing the procurement of perishable goods that did not have written procedures, the quality requirements of the material written and standardized in the hotel. To continue the problem where there are still problems related to food quality at breakfast at The Aliga Hotel Padang. This study aims to analyze food quality at breakfast at The Aliga Hotel Padang. This type of studyiisiquantitativepdescriptive. The population in this study were guests who stayed and breakfast at The Aliga Hotel Padang. The sampling technique used is purposive sampling. The totaliofisamplesiin this study amounted to 91 people. Data collection techniques were carried out by distributing questionnaires (questionnaires) using the Liker scale that has been tested for validity and reliability. Thenitheidata wereianalysisithrough data tabulation and descriptive data using percentages. Based on the research that has been done, the results obtained that the quality of food at breakfast at The Aliga Hotel Padang is in the category of enough with a percentage of 45.05%. It is recommended for other researchers to continue research on the quantity of food. Keywords: Food Quality, Breakfast


2019 ◽  
Vol 66 (2) ◽  
pp. 135-143 ◽  
Author(s):  
Bader H Alhajeri ◽  
Lucas M V Porto ◽  
Renan Maestri

Abstract The “resource availability hypothesis” predicts occurrence of larger rodents in more productive habitats. This prediction was tested in a dataset of 1,301 rodent species. We used adult body mass as a measure of body size and normalized difference vegetation index (NDVI) as a measure of habitat productivity. We utilized a cross-species approach to investigate the association between these variables. This was done at both the order level (Rodentia) and at narrower taxonomic scales. We applied phylogenetic generalized least squares (PGLS) to correct for phylogenetic relationships. The relationship between body mas and NDVI was also investigated across rodent assemblages. We controlled for spatial autocorrelation using generalized least squares (GLS) analysis. The cross-species approach found extremely low support for the resource availability hypothesis. This was reflected by a weak positive association between body mass and NDVI at the order level. We find a positive association in only a minority of rodent subtaxa. The best fit GLS model detected no significant association between body mass and NDVI across assemblages. Thus, our results do not support the view that resource availability plays a major role in explaining geographic variation in rodent body size.


Sign in / Sign up

Export Citation Format

Share Document