On r- and k-selection. american naturalist

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August undefined, 2024

Webr/K選擇理論（r/K selection theory）是二十世紀生態學上一個有關生物體如何權衡後代的數量與品質的理論，這個理論需要將性狀和自然選擇結合在一起進行考慮。這兩個概念是相對比較出來的，在討論生物生存策略時，會針對物種進行對比。其中r理論是指以犧牲父母投資為代價從而增加子代的數量 ... WebABSTRACT: The present study explores the links among life history, reproductive strategy, autism-spectrum quotient, and quality of life. Our 235 participants (167 women and 68 …

Reconsideration of r/K Selection Theory Using Stochastic …

WebIn ecology, r/K selection theory relates to the selection of combinations of traits in an organism that trade off between quantity and quality of offspring. The focus on either an … WebPianka, E. R. (1970). On r- and K-Selection. The American Naturalist, 104(940), 592–597. doi:10.1086/282697 how to remove ink from a colored shirt

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Webr- and K-theory can be used to compare the life strategies of plant pathogens, at least during the parasitic phase. While, as a group, plant pathogens tend to be r-selected, individual … Web1 de jun. de 2002 · PDF The theory of r- and K-selection was one of the first predictive models for life-history evolution. ... American Naturalist 114:569–583. Boyce, M. S. 1984. Restitution of. r - and. K WebVol. 109, No. 967 The American Naturalist May-June 1975 r- AND K-SELECTION IN T YPHA S. J. McNAUGHTON Biological Research Laboratories, 130 College Place, Syracuse, ... Wilson's (1967) theory of r- and K-selection, although similar arguments were developed earlier in different contexts (Fisher 1930; Dobzhansky 1950). As how to remove ink from aluminum cans

RESTITUTION OF r- AND K-SELECTION AS A MODEL OF DENSITY …

WebIn K-type selection, which occurs in fairly constant or predictable environments, individuals are favoured which have the best competitive abilities. ... American Naturalist 1970 Vol.104 pp.592-597 Abstract : In r-type natural selection, mortality is ... Web592 THE AMERICAN NATURALIST ON r AND K-SELECTION Dobzhansky (1950) proposed that natural selection in the tropics operates in a fundamentally different way … norflash 文件系统Webpianka, e.r., r and k selection or b and d selection, american naturalist 106: 581 (1972). google scholar. pianka, e.r., r-selection and k-selection, american naturalist 104: 592 … how to remove ink from a carpet

"WebIt is argued that rand K-selection may have important ramifications for the understanding of life history evolution, but for the model to be useful, it must be interpreted strictly as it was originally formulated: as a model of density-dependent natural selection. Dawkins (36, p. 293) observes that "ecologists enjoy a curious love/hate relationship with the r/K … " - On r- and k-selection. american naturalist

On r- and k-selection. american naturalist

Sci-Hub On r- and K-Selection. The American Naturalist, …

WebVol. 109, No. 967 The American Naturalist May-June 1975 r- AND K-SELECTION IN T YPHA S. J. McNAUGHTON Biological Research Laboratories, 130 College Place, … WebAlexander Milles, Melanie Dammhahn, Florian Jeltsch, Ulrike Schlägel, and Volker Grimm Fluctuations in Density-Dependent Selection Drive the Evolution of a Pace-of-Life …

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Webהפלודיפלואידיות (ב אנגלית: Haplodiploidy) היא מערכת פלואידית בה זכרים מתפתחים מביצים לא מופרות והם הפלואידים (חד־סדרתיים – בעלי עותק אחד מכל כרומוזום), והנקבות מתפתחות מביצים מופרות והן ... WebThe status of the concept of r- and K-selection is discussed and a more restricted usage of the terms is recommended. Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo. Search 207,820,138 papers from all fields of science. Search ... The American Naturalist. 1972;

Web11 de abr. de 2024 · 1 Introduction. As a fundamental concept for dynamic component of the climate system, resilience is typically defined as the ability of individual trees, forests or ecosystems to resist sudden disturbances and recover to their initial state (Holling, 1973; Simoniello et al., 2008).Given the large potential of vegetation to take up atmospheric … WebK-selection synonyms, K-selection pronunciation, K-selection translation, English dictionary definition of K-selection. or K-se·lec·tion n. A form of selection that occurs in an environment at or near carrying capacity, favoring a reproductive strategy in …

WebIn ecology, r/K selection theory relates to the selection of combinations of traits in an organism that trade off between quantity and quality of offspring. The focus on either an increased quantity of offspring at the expense of individual parental investment of r-strategists, or on a reduced quantity of offspring with a corresponding increased parental … WebPianka, E. R. (1970) “On r-and K-selection”, The American Naturalist, 104, pp. 592-597 [accessed on 20 February 2013]. ... The reason for this terminology of K-selection and r-selection is that in the common equations used to …

Web26 de jul. de 1991 · Abstract. Theories of density-dependent natural selection state that at extreme population densities evolution produces alternative life histories due to trade-offs. The trade-offs are presumed to arise because those genotypes with highest fitness at high population densities will not also have high fitness at low density and vice-versa.

Web23 de jun. de 2016 · Pianka ER. On r-and K-selection. American naturalist. 1970;p. 592–597. View Article Google Scholar 4. Reznick D, Bryant MJ, Bashey F. r-and K … nor flash 坏块管理WebTitle: On r- and K-Selection Created Date: 20240227221114Z how to remove ink from a couchWeb26 de ago. de 2024 · American Naturalist, 107, 651 ... A most interesting theoretical notion pertinent to this problem is r- and K-selection (MacArthur 1962; Cody 1966; MacArthur and Wilson 1967; ... nor flash 坏块Web1 de mar. de 1981 · In the present study, the r-selected decapods were represented by the Penaeoidea group (Dendrobranchiata). The K-selected ones were represented by the Pleocyemata, i.e., Caridea, Brachyura ... how to remove ink from applianceWebNumerous organisms inhabiting variable environments exhibit temporally dynamic reproductive strategies. Populations of such organisms demonstrate considerable variation in reproductive effort associated with environmental changes and thus shift between relative r- and K-positions on the r-K continuum. Failure to consider such dynamic strategies can … how to remove ink from beddingWebPianka, E.R. (1970) On r and k selection. American Naturalist, 104, 592-597. doi:10.1086/282697 has been cited by the following article: TITLE: Effects of life-history components on population dynamics of the rare endangered plant Davidia involucrata. AUTHORS: Haimei You, Yanhong Liu, Kazue Fujiwara. KEYWORDS ... nor flash 容量Web阅读量：. 260. 作者：. Pianka ， Eric R. 摘要：. In r-type natural selection, mortality is relatively independent of genotype and population size due to the variable or unpredictable nature of the environment. In K-type selection, which occurs in fairly constant or predictable environments, individuals are favoured which have the ... how to remove ink from a pvc purse