Consulta: subjectFacets:"Limitation"
Registros recuperados: 7
Data/hora: 10/06/2024 14:05:57

Change and Identity in Complex Systems
Provedor de dados: 7
Autores: Cumming, Graeme S; University of Florida; cummingg@wec.ufl.edu; Collier, John; University of KwaZulu-Natal; collierj@ukzn.ac.za.
Tipo: Peer-Reviewed Reports
Palavras-chave: Complexity; Resilience; Identity; Adaptive cycle; Limitation; Replacement; Random walk; Evolution; Ecosystem; Economy; Society; Social-ecological system; Metamodels.
Ano: 2005

Сезонные изменения скорости роста и лимитирование фитопланктона питательными веществами в прибрежных водах Черного моря в районе Севастополя
Provedor de dados: 13
Autores: Стельмах, Л. В.; Губанов, В. И.; Бабич, И. И.
Исследована сезонная динамика скорости роста микро- и нанофитопланктона и ее зависимость от концентрации основных биогенных веществ в среде в прибрежных поверхностных водах Черного моря  в районе Севастополя. Показано, что скорость роста фитопланктона лимитируется соединениями азота в течение большей части  года. В холодный период (ноябрь – апрель), когда количество нитратов в воде было сравнительно высоким (1 - 10 мкМ), скорость роста микро- и нанофитопланктона определялась их концентрацией в соответствии с уравнением Михаэлиса-Ментен. В теплое время (май – октябрь) при более низких концентрациях нитратов в среде (в основном  менее 1мкМ) скорость роста водорослей связана гиперболической зависимостью с  содержанием аммония.  Степень азотного лимитирования...
Tipo: Journal Contribution
Palavras-chave: Фитопланктон; Лимитирование; Биогенные вещества; Черное море; Phytoplankton; Limitation; Nutrients; Black Sea Nutrients (mineral) Phytoplankton Phytoplankton http://aims.fao.org/aos/agrovoc/c_13344.
Ano: 2004
URL: http://repository.ibss.org.ua/dspace/handle/99011/135

Defasagem entre as produtividades real e potencial do algodoeiro herbáceo: limitações morfológicas, fisiológicas e ambientais.
Provedor de dados: 14
Autores: BELTRÃO, N. E. de M.; AZEVEDO, D. M. P. de.
Fatores limitantes relacionados com a morfologia, a organografia e arquiteture do algodoeiro herbaceo; fatores limitantes relacionados com -a fisiologia e a bioquimica da planta do algodoeiro herbaceo; fatores limitantes relacionados com as condicoes do ambiente; consideracoes holoticas envolvendo fatores da planta e do ambiente.
Tipo: Livro técnico (INFOTECA-E)
Palavras-chave: Herbaceo; Taxas de Crescimento; Cultura; Fotorrespiracao; Trofofilos; Dossel; Balanco; Assimilado; Limitacao incontrolavel; Desenvolvimento; Brasil; Paraiba; Annual cotton; Production; Growth rate; Reespiration; Assimilation; Crop; Levll; Not controllable; Limitation; Growth; Deelopment.; Algodão; Bioquímica; Crescimento; Fotossíntese; Fisiologia Vegetal; Gossypium Hirsutum; Metabolismo; Respiração.; Produção; Biochemistry; Canopy; Leaves; Physiology.; Photosynthesis; Photorespiration; Metabolism.
Ano: 1993
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/264934

Regulation of the Phytoplankton Heme b Iron Pool During the North Atlantic Spring Bloom
Provedor de dados: 5
Autores: Louropoulou, Evangelia; Gledhill, Martha; Browningi, Thomas J.; Desai, Dhwani K.; Barraqueta, Jan-lukas Menzel; Tonnard, Manon; Sarthou, Geraldine; Planquette, Helene; Bowie, Andrew R.; Schmitz, Ruth A.; Laroche, Julie; Achterberg, Eric P.
Heme b is an iron-containing co-factor in hemoproteins. Heme b concentrations are low (&lt; 1 pmol L-1) in iron limited phytoplankton in cultures and in the field. Here, we determined heme b in marine particulate material (&gt; 0.7 mu m) from the North Atlantic Ocean (GEOVIDE cruise - GEOTRACES section GA01), which spanned several biogeochemical regimes. We examined the relationship between heme b abundance and the microbial community composition, and its utility for mapping iron limited phytoplankton. Heme b concentrations ranged from 0.16 to 5.1 pmol L-1 (median = 2.0 pmol L-1, n = 62) in the surface mixed layer (SML) along the cruise track, driven mainly by variability in biomass. However, in the Irminger Basin, the lowest heme b levels (SML: median =...
Tipo: Text
Palavras-chave: Heme b; North Atlantic; Phytoplankton; Diatoms; Iron; Limitation; GEOTRACES; GEOVIDE.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00508/61940/66029.pdf

Growth and phosphorus uptake by the toxic dinoflagellate Alexandrium catenella (dinophyceae) in response to phosphate limitation
Provedor de dados: 5
Autores: Jauzein, Cecile; Labry, Claire; Youenou, Agnes; Quere, Julien; Delmas, Daniel; Collos, Yves.
Alexandrium catenella (Whedon et Kof.) Balech has exhibited seasonal recurrent blooms in the Thau lagoon (South of France) since first reported in 1995. Its appearance followed a strong decrease (90%) in phosphate (PO(4)3-) concentrations in this environment over the 1970-1995 period. To determine if this dinoflagellate species has a competitive advantage in PO(4)3--limited conditions in terms of nutrient acquisition, semicontinuous cultures were carried out to characterize phosphorus (P) uptake by A. catenella cells along a P-limitation gradient using different dilution rates (DRs). Use of both inorganic and organic P was investigated from measurements of 33PO(4)3- uptake and alkaline phosphatase activity (APA), respectively. P status was estimated from...
Tipo: Text
Palavras-chave: Alexandrium catenella; Alkaline phosphatase; Limitation; Phosphorus; Semicontinuous cultures.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00015/12641/9570.pdf

インド北部ラダーク山岳地帯の移牧民の生業構造 : ドムカル村における食料摂取の視座から
Provedor de dados: 19
Autores: 平田, 昌弘; Hirata, Masahiro.
The food intake of agro-pastoralists was surveyed in the hilly high altitude of Ladakh，northern India to understand the characteristics of those subsistence，to discuss their adaptation strategy to high altitude circumstances and to reconsider the pastoralism theory through the case study of transhumance. The characteristics of their food intake are 1) the daily food intake is composed by 5 times such us morning tea，breakfast，lunch， evening tea and dinner，2) they don't take any meat in normal daily life， 3) necessary nutrients are mostly supplied by taking beans，fresh and dry vegetables，milk products and cereals，4) cereals contribute mostly to the nutrient intake，5) the intake of purchased wheat and rice become bigger than self-supplied barley，6) the milk...
Palavras-chave: 移牧; 乳製品; 大麦; 豆; 肉; 有限性; 謙虚; 高地適応; Transhumance; Milk products; Barley; Beans; Meat; Limitation; Modesty; Adaptation in hilly high altitude.
Ano: 2010
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3076

インド北部ヒマラヤ山脈西部北斜面チャンタン地域における遊牧民の生業構造についての予備調査 : 遊牧民カルナクパD世帯における食料摂取の事例から
Provedor de dados: 19
Autores: 平田, 昌弘; Hirata, Masahiro.
The preliminary nutritional survey on a D household of “Karnak-pa” nomad was conducted in Changtang area, Ladakh region of north India to understand the situation of food intake by the nomads of which subsistence depend only on livestock keeping, not on crop producing, and analyze its characteristics. The characteristics of food intake in the D household are summarized as the following 9 points. 1) The daily food intake is composed by 5 times such us morning cheese-barley soup named as “Tsam thuk”, breakfast, lunch, evening tea/food and dinner. 2) The energy intake of Karnak-pa nomad was supplied by 39.3 % - 45.0 % from self-sufficient foods and 55.0 % - 60.7 % from purchased foods. Although Karnak-pa nomads don’t engage in any agricultural production...
Palavras-chave: 遊牧; 乳製品; 大麦; 豆; 肉; 有限性; 謙虚; 高地適応; Nomadism; Milk products; Barley; Beans; Meat; Limitation; Modesty; Adaptation in high altitude.
Ano: 2012
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3591