2024 The neutral theory of biodiversity

The neutral theory of biodiversity

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August undefined, 2024

The unified neutral theory of biodiversity and biogeography (here "Unified Theory" or "UNTB") is a theory and the title of a monograph by ecologist Stephen P. Hubbell. It aims to explain the diversity and relative abundance of species in ecological communities. Like other neutral theories of ecology, Hubbell assumes that the differences between members of an ecological community of WebOct 6, 2024 · In neutral theory, individuals across all species are assumed equally susceptible to random deaths and abundance-dependent reproduction causes a stochastic walk, or “ecological drift”, that...

Phytoplankton biodiversity and the inverted paradox

WebMar 2, 2006 · These three figures show the analysis of stabilization in similarity and diversity under neutral dynamics: mean (a) and standard deviation (b) of Bray-Curtis similarity, and % change in species... WebDespite its supreme importance and the threat of its global crash, biodiversity remains poorly understood both empirically and theoretically. This ambitious book presents a new, … r9x2w837x53rk.com:58001

Unified neutral theory of biodiversity and biogeography - 百度学术

WebJun 27, 2011 · The unified neutral theory of biogeography and biodiversity should stimulate research in new theoretical and empirical directions by ecologists, evolutionary biologists, and biogeographers. Stephen P. Hubbell is Professor of Plant Biology at the University of Georgia and Staff Scientist at the Smithsonian Tropical Research Institute in Panama. WebThe neutral theory of biodiversity purports that patterns in the distribution and abundance of species do not depend on adaptive differences between species (i.e. niche differentiation) but solely on random fluctuations in population size ("ecological drift"), along with dispersal and speciation. In this framework, the ultimate driver of ... WebAug 25, 2014 · The success of the neutral theory of biodiversity and biogeography (1, 2) at explaining patterns in biodiversity has resulted in a vigorous debate on the processes underlying the assembly, dynamics, and structure of ecological communities (1, 3–12).Starting with the pioneering work of MacArthur (13–15), ecologists have … shively goodwill

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The neutral theory of biodiversity and biogeography and Stephen …

WebNeutral theory explains biodiversity when species are identical. Aa Aa Aa Figure 1: Neutral and niche (A) Very similar herbivores might be considered to be equivalent and essentially... WebThe unified neutral theory of biodiversity and biogeography (here "Unified Theory" or "UNTB") is a theory and the title of a monograph by ecologist Stephen P. Hubbell. It aims to explain the diversity and relative abundance of species in ecological communities. Like other neutral theories of ecology, Hubbell assumes that the differences between members of … shively garbage pickuphttp://www.scholarpedia.org/article/Unified_neutral_theory_of_biodiversity_and_biogeography r9 weathercock\\u0027s

"WebJul 1, 2011 · The history of neutral theory. Neutral theory makes a controversial ‘neutrality assumption’: all individuals within a particular trophic level have the same chances of … " - The neutral theory of biodiversity

The neutral theory of biodiversity

WebApr 1, 2012 · The Unified Neutral Theory of Biodiversity (UNTB), proposed as an alternative to niche theory, has been viewed as a theory that species coexist without niche … WebJun 28, 2024 · Island biogeography remains a popular topic in ecology and has gained renewed interest due to recent theoretical development. As experimental investigation of …

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WebThe neutral theory of biodiversity by Hubbell (14) has prompted a resurgence of interest in community modeling of biodiversity. Its radical simpliﬁcation of ecological reality has enabled progress in mathematical models of community struc-ture (15, 16) but has also generated intense controversy (17–19). WebApr 29, 2001 · The unified neutral theory of biogeography and biodiversity should stimulate research in new theoretical and empirical directions by ecologists, evolutionary …

WebApr 27, 2010 · The neutral theory of biodiversity and biogeography emphasizes the importance of dispersal and speciation to macro-ecological diversity patterns. While the … WebAug 12, 2004 · This new sample distribution matches the log-series expectation at high biodiversity values (θ > 1) but clearly departs from it for species-poor metacommunities (θ < 1). Our theoretical framework should be helpful in the better assessment of diversity and testing of the neutral theory by using abundance data.

WebJun 1, 2005 · Neutral theory in ecology is based on the symmetry assumption that ecologically similar species in a community can be treated as demographically equivalent on a per capita basis—equiv-alent in... WebJun 28, 2024 · Island biogeography remains a popular topic in ecology and has gained renewed interest due to recent theoretical development. As experimental investigation of the theory is difficult to carry out, mechanistic simulation models provide useful alternatives. Several eco-evolutionary mechanisms have been identified to affect island biodiversity, …

WebThe neutral theory of molecular evolution suggests that most of the genetic variation in populations is the result of mutation and genetic drift and not selection. According to this theory, if a population carries several different alleles of a particular gene, odds are that each of those alleles is equally good at performing its job — in ...

WebMar 11, 2024 · Ecological neutral theory refers to a suite of neutral models that all assume the demographic properties of an individual are independent of its species identity. This is a strong assumption that precludes explicit ecological niches or trophic interactions. shively hallWebThe neutral theory of biodiversity is an ecological theory asserting that many observed biogeographical patterns in nature can be explained by simple models that ignore differences between species. Despite the apparently radical assumption of species equivalence, the predictions of neutral models often match empirical data. shively group insuranceWebApr 11, 2024 · Background Among the most widely predicted climate change-related impacts to biodiversity are geographic range shifts, whereby species shift their spatial distribution to track their climate niches. A series of commonly articulated hypotheses have emerged in the scientific literature suggesting species are expected to shift their … r9 weathercock\u0027sWebApr 13, 2003 · The unified neutral theory of biodiversity (or UNTB, hereafter used to refer to either the theory or Hubbell's 2001 book 1) predicts that species abundance distributions … r9 wolf\u0027s-headWebAug 15, 2006 · Hubbell SP (2005) Neutral theory in community ecology and the hypothesis of functional equivalence. Funct Ecol 19: 166–172. View Article Google Scholar 10. McGill BJ (2003) A test of the unified neutral theory of … r9 wavefront\\u0027sWebDec 8, 2024 · In Hubbell’s 2001 book, The Unified Neutral Theory of Biodiversity and Biogeography, he argued that many species can occupy any given niche, and whether they … r9wtu-ed16WebMar 15, 2005 · Neutral theory explains the rapid evolution of pseudogenes, third positions in codons, less constrained protein genes and much, much more. Stochastic models, such as those that have revolutionized the analysis of phylogenetic relationships ( Hillis et al. 1996 ), do not actually have to postulate neutrality or, indeed, any particular biology. shively group