The Latitudinal Gradient of Species-Area Relationships for Vascular Plants of North America

Qian, Qian; Fridley,; Palmer,

doi:10.2307/4541140

Cited by 28 publications

(41 citation statements)

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“…McLaughlin (2007), another phytogeographer, adds that most floras usually comprise between 200 and 1,000 species and are focused on "local intact remnants of the regional flora in areas of intense agricultural and urban development" (p. 2). To further investigate the Qian et al (2007) database, we contacted Michael Palmer, who is in charge of the "Floras of North America Project," which constitutes part of the database for the Qian et al (2007) article. He supplied us with the online database mentioned but not included in the print version of their article.…”

Section: Examplementioning

confidence: 99%

“…MacRoberts, MacRoberts, & Brown, 2002). Thus, we are familiar with the type of material that Qian et al (2007) used because we are the authors of some of it.…”

Section: Examplementioning

confidence: 99%

“…. Qian et al (2007), they used 1,742 floras, but cite none of them. Thus, our work was used but not cited; neither were the other 1,741 floras.…”

Section: Examplementioning

confidence: 99%

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Problems of citation analysis: A study of uncited and seldom‐cited influences

MacRoberts

2009

J. Am. Soc. Inf. Sci.

159

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To determine influences on the production of a scientific article, the content of the article must be studied. We examined articles in biogeography and found that most of the influence is not cited, specific types of articles that are influential are cited while other types of that also are influential are not cited, and work that is "uncited" and "seldom cited" is used extensively. As a result, evaluative citation analysis should take uncited work into account.

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Section: Examplementioning

confidence: 99%

“…MacRoberts, MacRoberts, & Brown, 2002). Thus, we are familiar with the type of material that Qian et al (2007) used because we are the authors of some of it.…”

Section: Examplementioning

confidence: 99%

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Problems of citation analysis: A study of uncited and seldom‐cited influences

MacRoberts

2009

J. Am. Soc. Inf. Sci.

159

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“…In contrast to mangroves (Saenger et al 1977), and indeed most biota (Qian et al 2007), saltmarsh species diversity increases with increasing latitude in Australia (Adam 1996;Saenger et al 1977;Specht 1981). The increase in diversity appears strongly linked to mean minimum daily temperature, explaining nearly 80% of variation in diversity between bioregions (Saintilan 2009).…”

Section: Species Distribution and Temperaturementioning

confidence: 99%

The significance and vulnerability of Australian saltmarshes: implications for management in a changing climate

Saintilan¹,

Rogers

2013

Mar. Freshwater Res.

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We review the distribution, status and ecology of Australian saltmarshes and the mechanisms whereby enhanced atmospheric carbon dioxide and associated climate change have influenced and will influence the provision of ecosystem goods and services. Research in temperate and subtropical saltmarsh has demonstrated important trophic contributions to estuarine fisheries, mediated by the synchronised massspawning of crabs, which feed predominantly on the C-4 saltmarsh grass Sporobolus virginicus and microphytobenthos. Saltmarshes also provide unique feeding and habitat opportunities for several species of threatened microbats and birds, including migratory shorebirds. Saltmarshes increased in extent relative to mangrove in Australia in both tide-and wave-dominated geomorphic settings through the latter Holocene, although historic trends have seen a reversal of this trend. Australian saltmarshes have some capacity to maintain elevation with respect to rising sea level, although in south-eastern Australia, the encroachment of mangrove and, in Tasmania, conversion of shrubland to herbfield in the past half-century are consistent with changes in relative sea level. Modelling of the impacts of projected sea-level rise, incorporating sedimentation and other surface-elevation drivers, suggests that the survival of saltmarsh in developed estuaries will depend on the flexible management of hard structures and other impediments to wetland retreat.

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“…It is near universal with only a few exceptions (Hillebrand 2003). Although there are many theories (Whittaker 1967, Broham 2003, Scheiner 2005, Qian 2007, Bridle 2009), the correlation between the distribution and the climate along the gradient at the global scale is shown to be the strongest (Currie 1991, Currie 2004. Palaeotological studies also suggest that gradual climate changes rather than exogenous catastrophes might have caused some mass extinctions for *Address correspondence to this author at the Department of Mathematics, University of Lincoln,NE 68588,USA; Handling Editor: Helen Regan marine species (Stanley 1984) and the relatively smaller scale extinction through the Cretaceous-Tertiary boundary (Briggs 1995).…”

Section: Introductionmentioning

confidence: 99%

From Energy Gradient and Natural Selection to Biodiversity and Stability of Ecosystems

Deng¹

2010

TOECOLJ

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Abstract:The purpose of this paper is to incorporate well-established ecological principles into a foodweb model consisting of four trophic levels ---abiotic resources, plants, herbivores, and carnivores. The underlining principles include Kimura's neutral theory of genetic evolution, Liebig's Law of the Minimum for plant growth, Holling's functionals for herbivore foraging and carnivore predation, the One-Life Rule for all organisms, and Lotka-Volterra's model for intraand interspecific competitions. Numerical simulations of the model led to the following statistical findings: (a) particular foodwebs can give contradicting observations on biodiversity and productivity, in particular, all known functional forms ---positive, negative, sigmoidal, and unimodal correlations are present in the model; (b) drifting stable equilibria should be expected for ecosystems regardless of their size; (c) resource abundance and specific competitions are the main determining factors for biodiversity, with intraspecific competition enhancing diversity while interspecific competition impeding diversity; (d) endangered species are expected always and loss in lower trophic endangered species are expected at trophication, i.e. the establishment of a higher trophic level of a community. These findings may shed lights on some ongoing debates on biodiversity. In particular, finding (a) implies that the diversity vs. ecosystems functioning debate is most likely the result of incompatible particular observations each cannot be generalized. In particular, general causality should not be expected between diversity and productivity. Finding (b) does not support May's theory that large ecosystems are inherently unstable nor Eton's theory that stability requires diversity. However, it lends a strong support to the energetic theory for the latitudinal diversity gradient. Finding (c) supports Darwin's observation on the effect of interspecific competition on diversity. Finding (d) implies that loss of diversity is inevitable with the appearance of a super species like the human race. Our method and result also suggest that although the evolution of particular species cannot be predicted, some general statistic patterns appear to persist. In addition to the aforementioned findings, these persisting patterns include: the trophic succession, the trophic biomass separation in orders of magnitude, the upper bounds in biodiversity in relationship to the intensities of specific competitions despite the enormous possible number of species allowed by genetic mutations.

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The Latitudinal Gradient of Species-Area Relationships for Vascular Plants of North America

Cited by 28 publications

References 0 publications

Problems of citation analysis: A study of uncited and seldom‐cited influences

Problems of citation analysis: A study of uncited and seldom‐cited influences

The significance and vulnerability of Australian saltmarshes: implications for management in a changing climate

From Energy Gradient and Natural Selection to Biodiversity and Stability of Ecosystems

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