Webr-selected species, also called r-strategist, species whose populations are governed by their biotic potential (maximum reproductive capacity, r). Such species make up one of the two generalized life-history strategies posited by American ecologist Robert MacArthur and American biologist Edward O. Wilson; K-selected species—that is, species whose … Web1 aug. 2014 · The theory of r selection, favoring population growth, as opposed to K selection, favoring more efficient utilization of resources, has in recent years been applied by Rushton to contrast human ethnic groups in terms of their r/K reproductive strategies, suggesting the existence of a continuum from r groups, producing many offspring but …

R-selected species biology Britannica

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 ... Web28 jul. 2014 · The book makes an incredibly strong case that this K-selected reproductive strategy is the biological force underlying the conservative ideology. According to the book, as a result of this evolutionary phenomenon of r/K selection strategies manifesting in humans, human beings have two political ideologies – one is r-selected, and one is K … tx8r9 评测

What is the difference between K and r-selected species ...

WebR-Selected Biologists characterize most invasive species as r-selected. R-selected species produce an abundance of, as one University of Miami professor puts it, “cheap” offspring, whereas those species that practice the opposite reproductive strategy – K-selected species – produce fewer, more “expensive” offspring. Web27 apr. 2016 · We show, using a novel approach based on a parametrizing of a model for r - and K - selection including realistic ecological dynamics [ 21 ], that there is phenotypic variation in the strength of density regulation as well as … WebUnit 3: Populations: Intro to Populations Reproductive Strategies Activity 1. Read the descriptions below and identify if he described organisms if they have r- or K-selected characteristics. Then rank then to form a continuum from 1 being more r … tx8f