Relevant bibliographies by topics / Reserve of nutrients

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Reserve of nutrients'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 February 2022

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Journal articles on the topic "Reserve of nutrients"

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Bates, Terence R., Richard M. Dunst, and Paula Joy. "Seasonal Dry Matter, Starch, and Nutrient Distribution in 'Concord' Grapevine Roots." HortScience 37, no. 2 (2002): 313–16. http://dx.doi.org/10.21273/hortsci.37.2.313.

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Three-year-old field-grown 'Concord' (Vitis labruscana Bailey) grapevines were destructively harvested at eight growth stages during 1998 to quantify growth, carbohydrate distribution, and nutrient concentrations of different organs. The roots were the major storage organ for carbohydrates and nutrients, accounting for 84% of the starch and 75% of nitrogen stored in the vines at the beginning of the season. About 78% of the reserve starch in the vine was used for prebloom root and shoot growth. Early-season fine-root growth was a sink for stored vine nitrogen; however, the fine roots quickly b
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Hakl, J., J. Šantrůček, D. Kocourková, and P. Fuksa. "The effect of the soil compaction on the contents of alfalfa root reserve nutrients in relation to the stand density and the amount of root biomass." Soil and Water Research 2, No. 2 (2008): 54–58. http://dx.doi.org/10.17221/2117-swr.

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The reserve root nutrients influence the overwintering, regrowth, yield, and persistence of alfalfa plants. The total amount of the root reserves is considered more important than their concentration. One of the factors which can affect the reserve content can be the soil compaction. The aim of this study is to clarify the effect of the soil compaction on the reserve root nutrients in relation to the stand density and the amount of the root biomass. In this experiment, the stand density ranged from 28 to 112 plants per m<sup>2</sup>. The average soil bulk density in the uncompacted
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Slot, Martijn, Danielle T. Palow, and Kaoru Kitajima. "Seed reserve dependency of Leucaena leucocephala seedling growth for nitrogen and phosphorus." Functional Plant Biology 40, no. 3 (2013): 244. http://dx.doi.org/10.1071/fp12255.

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Mineral elements stored in seed reserves meet the nutrient demands of seedlings during their initial development and growth. We experimentally examined when seed reserves become insufficient to meet demands for nitrogen (N) and phosphorus (P) of seedlings of Leucaena leucocephala (Lam.) de Wit, a tropical woody legume. Seedlings were grown from seeds with four nutrient treatments: receiving all nutrients; all nutrients except N, all nutrients except P or deionised water. Growth curves were compared to quantify the time course of the onset of N and P deficiency during 8 weeks. N deficiency beca
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Petrie, Scott A., and Kevin H. Rogers. "Nutrient-reserve dynamics of semiarid-breeding White-faced Whistling Ducks: a north-temperate contrast." Canadian Journal of Zoology 82, no. 7 (2004): 1082–90. http://dx.doi.org/10.1139/z04-085.

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Little is known about the nutrient-reserve dynamics of waterfowl that breed in semiarid environments. Breeding White-faced Whistling Ducks, Dendrocygna viduata (L., 1766), were collected on the Nyl River floodplain, South Africa, during 1992–1993 and 1995. Mass of major lipid (wet skin + visceral fat + abdominal fat) and protein (breast muscle + leg muscle + gizzard) deposits and organs of males and females were evaluated in relation to sex and reproductive stage. Both sexes arrived at breeding areas with large lipid reserves and did not store additional lipid after arrival. Stored reserves en
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Januar, Hedi Indra, Asri Pratitis, and Rini Susilowati. "Statistical multi-metric based eutrophication index: Case of study at Batam Marine Reserve Park." ILMU KELAUTAN: Indonesian Journal of Marine Sciences 24, no. 4 (2019): 164. http://dx.doi.org/10.14710/ik.ijms.24.4.164-170.

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Excessive human waste nutrients, which usually consist of nitrogenous and phosphate compounds, are known as the major environmental stresses in coastal waters. Therefore, monitoring of nutrients level is very important in marine reserve park. This study presents an application of multi-metric index in accessing the spatial and temporal level of a nutrient in surface water at Batam City Marine Reserve Park, Indonesia. Research had been done with seasonal and spatial zones on three major islands namely Petong, Abang, and Dedep. Water samples from each station were taken from the surface water. P
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Zhang, Shuangshuang, Jin Wei, Yiping Li, Maoqing Duan, Amechi S. Nwankwegu, and Eyram Norgbey. "The Influence of Seasonal Water Level Fluctuations on the Soil Nutrients in a Typical Wetland Reserve in Poyang Lake, China." Sustainability 13, no. 7 (2021): 3846. http://dx.doi.org/10.3390/su13073846.

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To comprehend the distribution characteristics of the nutrients and the variations in the soil fertility, a total of 23 samples were collected from Nanjishan wetland reserve in the dry season, wet season, and water-recession season. The study area was divided into four areas (A1, A2, A3, and A4) based on the local hydrological conditions, geographical locations, and nutrient load characteristics. The findings showed that the highest concentration of nutrients appeared in A1, followed by A2 due to anthropogenic activities and the sewage discharge along Ganjiang River. Except for the total amoun
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Weber, E., and H. J. Ehrlein. "Reserve capacities of the small intestine for absorption of energy." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 275, no. 1 (1998): R300—R307. http://dx.doi.org/10.1152/ajpregu.1998.275.1.r300.

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Previous in vitro studies showed that the small intestine has reserve capacities for absorption of nutrients. However, the size of the reserve capacity is controversial. Therefore, we measured the intestinal capacity for absorption of energy in relation to the postprandial gastric delivery of energy into the gut. In minipigs, a 150-cm length of jejunum was perfused (1–8 kcal/min) with four nutrient solutions containing 60% of energy as carbohydrate, protein, and fat, respectively, or containing 33.3% of each nutrient. In separate experiments, gastric delivery of energy to the jejunum was measu
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Ralte, Vanlalhruaii. "Effect of coal mining on soil physico-chemical properties of Nokrek Biosphere Reserve of Meghalaya, northeastern India." Science Vision 17, no. 4 (2017): 228–37. http://dx.doi.org/10.33493/scivis.17.04.07.

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Mining causes massive damage to landscape and biological components of an ecosystem. Due to extensive and unmanaged coal mining in the southern part of Nokrek Biosphere Reserve of Meghalaya, the area has been turned into degraded land since nutrient deficient sandy spoils are hostile for the growth and regeneration of plant communities. Soil is sandy to sandy loam and red, brown to dark brown in colour. The physico-chemical properties of the soil were greatly affected due to coal mining. There is an increased acidity i.e. from 6.00 in the undisturbed forest (control site) to 3.50 in the coal m
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Songwe, Nicholas C., F. E. Fasehun, and D. U. U. Okali. "Leaf nutrient dynamics of two tree species and litter nutrient content in Southern Bakundu Forest Reserve, Cameroon." Journal of Tropical Ecology 13, no. 1 (1997): 1–15. http://dx.doi.org/10.1017/s026646740001021x.

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ABSTRACTThe variations in macronutrient concentrations of the leaves of Terminalia superba and Pycanthus angolensis were studied and the concentrations of nutrients in leaves before abscission were compared with those after abscission. The amounts of nutrients returned to the forest floor were also computed from litter fall data at the start of maximum annual fall in the Reserve. With the exception of potassium in Pycanthus angolensis, there were significant variations in the nutrient concentrations of the two species with the time of year. With increasing leaf age the concentration of nitroge
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Esler, Daniel, James B. Grand, and Alan D. Afton. "Intraspecific Variation in Nutrient Reserve Use During Clutch Formation by Lesser Scaup." Condor 103, no. 4 (2001): 810–20. http://dx.doi.org/10.1093/condor/103.4.810.

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AbstractWe studied nutrient reserve dynamics of female Lesser Scaup (Aythya affinis) to identify sources of intraspecific variation in strategies of nutrient acquisition for meeting the high nutritional and energetic costs of egg formation. We collected data from interior Alaska and combined these with data for Lesser Scaup from midcontinent breeding areas (Afton and Ankney 1991), allowing a rangewide analysis for the species. We found little evidence that nutrient reserve use differed between Alaskan and midcontinent Lesser Scaup, except that subarctic birds used a small amount of protein res
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Dissertations / Theses on the topic "Reserve of nutrients"

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Cross, Iain David. "The effects of nutrients and hydrology on shallow lake plankton at Attenborough Nature Reserve, Nottinghamshire." Thesis, University of Nottingham, 2009. http://eprints.nottingham.ac.uk/11364/.

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Eutrophication results in the loss of conservation and amenity value from shallow lakes. Efforts have been made to restore shallow lakes by reducing the external nutrient loading. Removing nutrient-rich inflows can reduce nutrient loading but may alter lake hydrology. This thesis is primarily aimed at investigating the effects of a nutrient-rich river on water chemistry and plankton by comparing six shallow (<3.5 m) lakes that are connected to and isolated from the River Erewash, in the Attenborough Nature Reserve, Nottinghamshire, U.K. Lakes that received River Erewash discharge had higher nu
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Silva, Juliana Brito da. "Micronutrientes em perfis de solos do Escudo Sul-riograndense." Universidade Federal de Pelotas, 2009. http://repositorio.ufpel.edu.br/handle/ri/1178.

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Made available in DSpace on 2014-08-20T13:25:42Z (GMT). No. of bitstreams: 1 Dissertacao_Juliana_ Brito_da_Silva.pdf: 17044768 bytes, checksum: 1320d3e5fc898021a6254c663f4ed2f3 (MD5) Previous issue date: 2009-03-31<br>The highlands from the southern region of State of Rio Grande do Sul have been traditionally used for extensive cattle raising, which practically does not demand soil analysis and fertilization. The sustainable use of the soils with other agricultural activities, such as forestry, that has been increased in the last few years, needs a more suitable and accurate knowledge
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Raut, Yogendra Y. "Sustainable Bioenergy Feedstock Production Using Long-Term (1999-2014) Conservation Reserve Program Land." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu148344789416295.

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Bollmark, Lars. "Accumulation and mobilisation of nutrient reserves in Salix viminalis /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2000. http://epsilon.slu.se/avh/2000/91-576-5889-7.pdf.

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Metcalfe, Todd Andrew. "Modeling Farm-Level Costs of the Yield Reserve Program." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/44252.

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Nonpoint Source (NPS) pollution, pollution that comes from diffuse sources that are difficult to trace back to a single point such as farm fields, is a major concern affecting America's water ways. Nationally, agriculture is the leading source of water impairment and has also been identified as the largest source of pollution affecting the Chesapeake Bay. There are proposals now for a program that would pay farmers to use 15 percent less than the extension recommended amount of fertilizer. Known as the Yield Reserve Program, or Enhanced Nutrient Management, this policy could possibly help t
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Telang, Aparna. "Strategies used by female larval Lepidoptera to accumulate nutrient reserves." Diss., The University of Arizona, 2001. http://hdl.handle.net/10150/289732.

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Female insects produce eggs that are nutrient-rich. For most Lepidoptera, protein is acquired during larval feeding. Insects use pre-ingestive, post-ingestive and developmental strategies to meet nutritional needs. In this dissertation I examine the importance of these strategies to females of two related lepidopteran species differing in their adult feeding. Adult Heliothis virescens (Family Noctuidae) ingests nectar. The sexes were not distinguished according to their selective feeding behavior, but females accumulated more protein and carbohydrate. When restricted to diets, females ate and
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Salmon, Laura. "Contribution of foods to nutrient intakes of grades 4-6 students participating in Kahnawake Schools Diabetes Prevention Project 1994, 1998 and 2002." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=80872.

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This study assessed the diets of participants in the Kahnawake Schools Diabetes Prevention Project (KSDPP). Data were gathered from three cross-sectional surveys of students in grades four to six in the Mohawk community of Kahnawake. Single 24-hour recall interviews were conducted in 2002 (n = 151), 1998 (n = 153) and 1994 (n = 164). Mean number of servings of Vegetables and Fruits (3.6 per day), Milk Products (1.6 per day), and Meat and Alternatives (1.5 per day) were found to be below ranges recommended by Canada's Food Guide to Healthy Eating. Correspondingly, mean intakes of fibre,
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Guyn, Karla Lee. "Breeding ecology of northern pintails, nesting ecology, nest-site selection, nutrient reserve use and brood ecology." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0031/NQ63873.pdf.

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Jones, G. M. "The effect of dietary energy and body reserves on the partitioning of nutrients in lactating sows." Thesis, University of Aberdeen, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.592639.

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Milk nutrient output in modern lean genotype sows is potentially impaired by their genetic drive to deposit body protein. This is thought to be particularly true for young sows, whose body protein mass at farrowing is far from their mature body protein. The present series of experiments investigated possible factors involved in the regulation of the partitioning of nutrients in lactating modern lean genotype sows. In experiment 1, milk composition of sows was manipulated by dietary means and the effects on daily milk nutrient output and piglet performance pre- and post-weaning were measured. E
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Mitton, Rolff Vladimir. "Mineralogy and potassium mineral reserve in different soil aggregates classes and the levels of this nutrient in wheat (Triticum aestivum)." reponame:Repositório Institucional da UFPR, 2017. http://hdl.handle.net/1884/49376.

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Orientador: Prof. Dr. Vander de Freitas Melo<br>Coorientador: Prof. Dr. Volnei Pauletti<br>Dissertação (mestrado) - Universidade Federal do Paraná, Setor de Ciências Agrárias, Programa de Pós-Graduação em Ciência do Solo. Defesa: Curitiba, 26/04/2017<br>Inclui referências : f. 60-67<br>Resumo: A biodisponibilidade do K em suas diferentes formas minerais é muito variável e depende de vários fatores (concentração na solução do solo, capacidade de troca catiônica (CTC), grau de intemperismo do solo, etc.) que influenciam o equilíbrio químico do nutriente dentro do solo. O objetivo do presente tra
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Books on the topic "Reserve of nutrients"

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Ecology of a tropical lowland rain forest: Plant communities, soil characteristics, and nutrient relations of the forests in the Shimba Hills National Reserve, Kenya. J. Cramer, 1991.

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Salifu, Francis K. Nitrogen retranslocation of young Picea mariana to varied nitrogen supply and plant nutrient reserves. 2003.

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Skiba, Grzegorz. Fizjologiczne, żywieniowe i genetyczne uwarunkowania właściwości kości rosnących świń. The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, 2020. http://dx.doi.org/10.22358/mono_gs_2020.

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Bones are multifunctional passive organs of movement that supports soft tissue and directly attached muscles. They also protect internal organs and are a reserve of calcium, phosphorus and magnesium. Each bone is covered with periosteum, and the adjacent bone surfaces are covered by articular cartilage. Histologically, the bone is an organ composed of many different tissues. The main component is bone tissue (cortical and spongy) composed of a set of bone cells and intercellular substance (mineral and organic), it also contains fat, hematopoietic (bone marrow) and cartilaginous tissue. Bones a
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Book chapters on the topic "Reserve of nutrients"

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Čížková, Hana, Jana Rychterová, Libuše Hamadejová, et al. "Biomass Production in Permanent Wet Grasslands Dominated with Phalaris arundinacea: Case Study of the Třeboň Basin Biosphere Reserve, Czech Republic." In The Role of Natural and Constructed Wetlands in Nutrient Cycling and Retention on the Landscape. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-08177-9_1.

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"reserve [n] of nutrients." In Encyclopedic Dictionary of Landscape and Urban Planning. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-540-76435-9_11475.

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"Fishery Resources, Environment, and Conservation in the Mississippi and Yangtze (Changjiang) River Basins." In Fishery Resources, Environment, and Conservation in the Mississippi and Yangtze (Changjiang) River Basins, edited by Yushun Chen, Mike Daniels, Michele Reba, et al. American Fisheries Society, 2016. http://dx.doi.org/10.47886/9781934874448.ch14.

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&lt;em&gt;Abstract&lt;/em&gt;.—Agriculture has been identified as a potential leading source of nutrients (nitrogen and phosphorus) and sediment enrichment of water bodies within the Mississippi River basin (MRB) and contributes to impaired water quality and biological resources in the MRB and the northern Gulf of Mexico (GOM). This study reviewed agriculture, impacts on water quality and biological resources, and a brief introduction of watershed conservation programs in the MRB. Agriculture has increased nutrients and sediment loads to the Mississippi River and the northern GOM since the 1950s. Fish and macroinvertebrate communities have shifted, and low oxygen and high-turbidity-tolerant groups became dominant. In addition to existing conservation practices such as the Conservation Reserve Program through the 1985 farm bill and other related programs (e.g., the Wetlands Reserve Program), a recent basin-wide conservation initiative—the Mississippi River Basin Healthy Watersheds Initiative (MRBI)—was launched by U.S. Department of Agriculture Natural Resources Conservation Service in 2010. The MRBI provides financial incentives (more than US$222 million) to producers and landowners in 640 watersheds of 13 states to implement voluntary conservation practices that improve water quality, restore wetlands, enhance wildlife habitat, and sustain agricultural profitability. Edge-of-field and watershed monitoring have been initiated through the MRBI and related agricultural conservation programs such as Section 319 of the U.S. Environmental Protection Agency Clean Water Act and new initiatives such as the Discovery Farms program in Arkansas, Wisconsin, Minnesota, and North Dakota, Pioneer Farm in Wisconsin, the Louisiana Master Farmer Program in Louisiana, and others in the MRB states. These efforts will greatly improve downstream watershed ecosystem health by avoiding, controlling, and trapping nutrient and sediment runoff from agricultural fields to the Mississippi River and GOM. Although there continues to be problems with nutrient transport, sedimentation, and depleted groundwater supplies, agriculture will likely have less influence on the future ecological health condition of the Mississippi River and GOM. Future restoration programs need to focus more on state or regional coordination by classifying restoration projects and standardizing the geographic scale and evaluation methods across the whole MRB.
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Borer, Elizabeth T. "Beneficiary of a Changed Paradigm: Perspectives of a “Next-Generation” Scientist." In Long-Term Ecological Research. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780199380213.003.0021.

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As a scientist, the Long-Term Ecological Research (LTER) program has deeply influenced my approach to scientific inquiry by creating an environment of effective collaboration and long-term evaluations of ecosystems. The increasing emphasis on data management and sharing has shaped both the philosophy and implementation of my scientific projects. I have become a highly collaborative scientist because of my experiences with the effectiveness of collaborative inquiry, put in place by initiatives including the LTER program and institutes such as National Center for Ecological Analysis and Synthesis (NCEAS). I have been involved in the LTER program since I began my first faculty position at Oregon State University in 2004. Although my primary site affiliation is now Cedar Creek Ecosystem Science Reserve (CDR), I have ongoing experiments and collaborations spanning nine LTER sites (Borer et al. 2014b). I am a community ecologist with work that bridges into ecosystems. My research focuses on quantifying the consequences of global changes (e.g., nitrogen deposition, species invasions and extinctions) for interactions among species, including host–pathogen, plant–herbivore, and plant–plant interactions, and the resulting consequences for ecosystem functions. Since 2007, I have been the lead principal investigator of the Nutrient Network (NutNet; www.nutnet.org), a global scientific cooperative of more than 100 scientists performing identically replicated experiments at more than 75 sites in 17 countries on 6 continents to examine the interactive effects of herbivory and multiple nutrients on controlling critical processes and functions in the world’s grasslands (Borer et al. 2014a). I am currently an associate professor in the Ecology, Evolution, and Behavior Department at the University of Minnesota and serve as senior personnel on the ongoing National Science Foundation (NSF) grant supporting CDR. My LTER site affiliation is not entirely clear in my own mind, even though I am listed as a scientist at CDR. Although I have ongoing projects at LTER sites, primarily at CDR, I do not consider myself a site-based researcher in the LTER program.
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Cretescu, Igor, Zsofia Kovacs, Liliana Lazar, et al. "Danube Delta: Water Management on the Sulina Channel in the Frame of Environmental Sustainability." In River Deltas - Recent Advances [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97877.

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The Danube Delta is the newest land formed by both transporting sediments brought by Danube River, which flows into the Black Sea and by traversing an inland region where water spreads and deposits sediments. Diurnal tidal action is low (only 8–9 cm), therefore the sediments would wash out into the water body faster than the river deposits it. However, a seasonal fluctuation of water level of 20 cm was observed in the Black Sea, contributing to alluvial landscape evolution in the Danube Delta. The Danube Delta is a very low flat plain, lying 0.52 m above Mean Black Sea Level with a general gradient of 0.006 m/km and only 20% of the delta area is below zero level. The main control on deposition, which is a combination of river, wind-generated waves, and tidal processes, depends on the strength of each one. The other two factors that play a major role are landscape position and the grain size distribution of the source sediment entering the delta from the river. The Danube Delta is a natural protected area in the South-Eastern part of Romania, declared a Biosphere Reserve through the UNESCO “Man and Biosphere” Programme. Water is a determining factor for all the human settlements in the Biosphere Reserve, the whole Danube Delta being structured by the three branches of the Danube (Chilia, Sulina and Sfantu Gheorghe (Saint George)). Our case study is focused on the Sulina branch, also named Sulina Channel, which offers the shortest distance between the Black Sea (trough Sulina Port) and Tulcea (the most important city of the Danube Delta from economic, social and cultural points of view) for both fluvial and marine ships. The improvement of water resources management is the main topic of this chapter, in terms of water quality indicators, which will be presented in twenty-nine monitoring points, starting since a few years ago and updated to nowadays. During the study period, significant exceedances of the limit value were detected in case of nitrate-N (3.9–4.6 mg/L) at the confluence (CEATAL 2) with the Saint George branch and in the Sulina Channel after the Wastewaters Treatment Plant (WWTP) discharge area, as well as near two settlements, namely Gorgova and Maliuc. The higher concentrations of Nitrogen-based nutrients were caused by the leakage from the old sewage systems (where these exist) and the diffuse loads.
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Mitchell, Katherine A., and Jeffrey E. Herrick. "Patterns and Controls of Soil Water in the Jornada Basin." In Structure and Function of a Chihuahuan Desert Ecosystem. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780195117769.003.0009.

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This chapter focuses on controls and patterns of soil moisture in the Jornada Basin. First we describe general properties that commonly contribute to soil water heterogeneity; second, we offer a brief overview of soil water research in the Jornada Basin; and last, we describe specific patterns of soil water content and availability observed in the Jornada Basin. Our goal is to describe general patterns of soil water that are likely to occur across the Chihuahuan Desert region. In arid and semiarid regions, water is typically thought to be the most limiting resource to biological activity (Noy-Meir 1973), though colimitation by water and nitrogen may be a more general rule (Hooper and Johnson 1999; see also chapter 6). The availability of water affects plant productivity, microbial activity, activity of biological soil crusts, nutrient cycling, and organic matter decomposition. It also directly and indirectly affects soil erosion, chemical weathering, and carbonate formation. There are several hypotheses addressing how water availability affects plant productivity in desert environments. Beatley (1974) proposed that various functional types (e.g., shrub, perennial grass, annual forb) have different seasonal rainfall thresholds to trigger phenological responses. The annual productivity of functional types is therefore determined by the timing and amount of rainfall. Westoby (Noy-Meir 1973) proposed the pulse-reserve paradigm to explain population dynamics of desert plants. In this view, a rain event triggers a pulse of production. Some of that production is used to generate new tissue, but part of the production is diverted into reserves. The amount of reserves in part determines the next production pulse, as well as the minimum size of the next trigger event. Rainfall is highly variable both spatially and temporally in arid regions; therefore, understanding patterns of rainfall and interactions between rainfall patterns, soil characteristics, temperature, and topography are critical to predicting ecosystem responses. The relationship between average annual precipitation and plant productivity across arid regions has substantial predictive ability (Le Houérou 1984). However, for a given site, the relationship between annual precipitation and yearly plant productivity has limited explanatory power (Lauenroth and Sala 1992).
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Steves, Claire, and Neil Pendleton. "Ageing and clinical medicine." In Oxford Textbook of Medicine, edited by Finbarr C. Martin. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198746690.003.0052.

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In 2017 there were, for the first time, more people older than 65 years than children under the age of 5 years. Despite the recent exponential increase in human lifespan, health-span has not kept pace, and variability between countries in healthy lifespan exceeds that of life expectancy. The increase in morbidity as people age is largely explained by loss of physiological reserve capacity in multiple systems simultaneously, which is termed frailty. Recent evidence suggests that different heritable (intrinsic factors) factors drive the ageing of different organ systems, but diverse systems share environmental (or extrinsic) drivers. Ageing is associated with macromolecular changes (molecular damage); changes in nutrient sensing, metabolism, and metabolic signalling; senescence in stem cells; altered intercellular communication, in particular changes associated with inflammaging; and changes in circadian rhythms and the hypothalamo-pituitary-adrenal axis.
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Simpson, Richard J., Rebecca E. Haling, and Phillip Graham. "Delivering improved phosphorus acquisition by root systems in pasture and arable crops." In Understanding and improving crop root function. Burleigh Dodds Science Publishing, 2021. http://dx.doi.org/10.19103/as.2020.0075.26.

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Improving low efficiency of phosphorus (P) use in agriculture is an imperative because P is one of the key nutrients underpinning sustainable intensification of food production and the rock-phosphate reserves, from which P fertilisers are made, are finite. This paper describes key soil, root and microbial processes that influence P acquisition with a focus on factors that can be managed to ensure optimal use of fertiliser, and development of root systems for improved P acquisition. A case study describes grasslands in southern Australia where the P-balance efficiency of production is very low, mainly because soils are P deficient and moderately to highly P-sorbing. Use of soluble P fertiliser, P-banding and soil testing to guide soil P management ensures effective use of P fertiliser. Progress towards improved P efficiency using pasture legumes with high P-acquisition efficiency is outlined. Development of a ‘whole-of-system’ understanding for effective P acquisition by roots is highlighted.
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Karima, Bencherif, and Therrafi Samia. "Native Arbuscular Mycorrhizal Fungi and Agro-Industries in Arid Lands: Productions, Applications Strategies and Challenges." In Mycorrhizal Fungi - Utilization in Agriculture and Industry [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94084.

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Bio-fertilizers based on mycorrhizal fungi represent a natural way to enrich the soil in respect of environmental balance. Arbuscular mycorrhizal fungi (AMF) are the most common symbiotic association between terrestrial plants and microorganisms, which are known to improve plants development and growth, especially under stress conditions. The potential for application of AMF in agricultures is an agro-ecological approach to allow better use of soil nutrient reserves. That receives increasing consideration for their prospective application for sustainable agriculture. The present chapter aims to highlight the agro-industrial strategy of AMF bio-fertilizers production explaining agronomics, ecological and economic approaches and benefits. This study aims to focus on the importance of production of bio-fertilizers based on indigenous AMF strains and their role in improving soils enrichment, which will subsequently lead to improved production and agricultural yields on degraded arid soils.
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"• BREEDING COSTS, NUTRIENT RESERVES, AND CROSS-SEASONAL EFFECTS: DEALING WITH DEFICITS IN SEA DUCKS /." In Ecology and Conservation of North American Sea Ducks. CRC Press, 2015. http://dx.doi.org/10.1201/b18406-11.

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Conference papers on the topic "Reserve of nutrients"

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Naurazbaeva, A. I., G. S. Mishukovskaya, M. G. Giniyatullin, D. V. Shelekhov, and E. A. Smolnikova. "ACCUMULATION OF RESERVE NUTRIENTS IN THE BODY OF HONEYBEES IN DIFFERENT VARIANTS TOP DRESSING." In Современные проблемы пчеловодства и апитерапии. Федеральное государственное бюджетное научное учреждение "Федеральный научный центр пчеловодства", 2021. http://dx.doi.org/10.51759/pchel_api_2021_168.

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Shimada, Belmiro Saburo, Marcos Vinícius Simon, Vinícius Bueno Da Silva, and Gabriel Candido. "USO DE DOSES DE NITROGÊNIO NA CULTURA DO MILHO." In I Congresso Nacional de Ciências Agrárias On-line. Revista Multidisciplinar de Educação e Meio Ambiente, 2021. http://dx.doi.org/10.51189/rema/1606.

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Introdução: O Brasil é o terceiro maior produtor de milho, com grandes produções desse grão, e para ser um dos maiores produtores dessa cultura, utilizou-se de diversos meios, seja no uso de tecnologia ou de práticas, e uma dessas foi a utilização de nitrogênio na cultura do milho. Objetivos: O objetivo deste trabalho é realizar uma breve revisão de literatura sobre o uso de doses de nitrogênio na cultura do milho, descrevendo sobre sua importância no setor agrícola e na produção do milho. Material e métodos: O presente estudo foi realizado com base na revisão de literatura sobre uso de doses
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