Niche Specialization and Conservation Biology of Cicindela nevadica lincolniana
01 Jan 2010-
TL;DR: This work presents a meta-analysis of captive Rearing and Mortality Analysis of Cicindela nevadica lincolniana, a sympatric tiger beetle assemblage, and its role in the conservation of the Salt Creek tiger beetle.
Abstract: 13 Introduction 14 Methods and Materials 17 Results 20 Discussion 21 Tables and Figures 29 Chapter 2 Captive Rearing and Mortality Analysis of Cicindela nevadica lincolniana Abstract 35 Introduction 36 Methods and Materials 41 Results 44 Discussion 46 Tables and Figures 5835 Introduction 36 Methods and Materials 41 Results 44 Discussion 46 Tables and Figures 58 Chapter 3 Behavioral niche partitioning in a sympatric tiger beetle assemblage Abstract 62 Introduction 63 Methods and Materials 67 Results 6962 Introduction 63 Methods and Materials 67 Results 69 Discussion 71 Tables and Figures 75 Chapter 4 Using the visual arts to promote the conservation of the Salt Creek tiger beetle Abstract 89 Introduction 9089 Introduction 90 Methods and Materials 95 Results and Discussion 97 Tables and Figures 103 Summary and Conclusions 109 Literature Cited 112
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TL;DR: Results of this study strongly indicate that competition among these species for resources has been reduced by the adaptation of different thermoregulatory behaviors such as spending time in shallow water, avoiding the sun during the hottest parts of the day, and by positioning their body against or away from the soil.
Abstract: How behavioral patterns are related to niche partitioning is an important question in understanding how closely related species within ecological communities function. Behavioral niche partitioning associated with thermoregulation is well documented in tiger beetles as a group. Co-occurring species of salt flat tiger beetles have adapted many thermoregulatory behaviors to cope with this harsh ecosystem. On first examination these beetles appear to occur in overlapping microhabitats and therefore compete for resources. To determine if behavioral niche partitioning is allowing multiple species to occur within the same harsh salt flat ecosystem we observed Cicindela nevadica lincolniana, Cicindela circumpicta, Cicindela fulgida, and Cicindela togata between 8:00 h and 21:00 h and recorded all behaviors related to thermoregulation using a digital voice recorder. Results of this study strongly indicate that competition among these species for resources has been reduced by the adaptation of different thermoregulatory behaviors such as spending time in shallow water, avoiding the sun during the hottest parts of the day, and by positioning their body against or away from the soil. The endangered C. n. lincolniana appears to rely most heavily on the shallow water of seeps for their diurnal foraging behavior (potentially limiting their foraging habitat), but with the advantage of allowing foraging during the hottest times of the day when potential competitors are less frequent. Ironically, this association also may help explain C. n. lincolniana's susceptibility to extinction: beyond the loss of saline wetlands generally, limited seeps and pools even within remaining saline habitat may represent a further habitat limitation within an already limited habitat.
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DOI•
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27 Oct 2010
17,349 citations
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03 Sep 2009
TL;DR: The "Penguin Classics" edition of "On the Origin of Species" as discussed by the authors contains an introduction and notes by William Bynum, and features a cover designed by Damien Hirst.
Abstract: Charles Darwin's seminal formulation of the theory of evolution, "On the Origin of Species" continues to be as controversial today as when it was first published. This "Penguin Classics" edition contains an introduction and notes by William Bynum, and features a cover designed by Damien Hirst. Written for a general readership, "On the Origin of Species" sold out on the day of its publication and has remained in print ever since. Instantly and persistently controversial, the concept of natural selection transformed scientific analysis about all life on Earth. Before the "Origin of Species", accepted thinking held that life was the static and perfect creation of God. By a single, systematic argument Darwin called this view into question. His ideas have affected public perception of everything from religion to economics. William Bynum's introduction discusses Darwin's life, the publication and reception of the themes of "On the Origin of Species", and the subsequent development of its major themes. The new edition also includes brief biographies of some of the most important scientific thinkers leading up to and surrounding the "Origin of Species", suggested further reading, notes and a chronology. Charles Darwin (1809-82), a Victorian scientist and naturalist, has become one of the most famous figures of science to date. The advent of "On the Origin of Species" by means of natural selection in 1859 challenged and contradicted all contemporary biological and religious beliefs. If you enjoyed "On the Origin of Species", you might like Darwin's "The Descent of Man", also available in "Penguin Classics".
7,384 citations
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TL;DR: The address of the president of a society, founded largely to further the study of evolution, at the close of the year that marks the centenary of Darwin and Wallace's initial presentation of the theory of natural selection.
3,596 citations
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TL;DR: A man is unworthy of the name of a man of science who, whatever may be his special branch of study, has not materially altered his views on some important points within the last twelve years.
Abstract: FEW are the writers, scientific or otherwise, who ca afford, in every successive edition of their works, to place side by side the passages which they have seen reason to alter, from a change of view or any other cause. And yet to this point we find especial attention called in each succeeding edition of Mr. Darwin's “Origin of Species.” And herein lies the true humility of the man of science. Science is often charged with being arrogant. But the true student of Nature cannot be otherwise than humble-minded. That man is unworthy of the name of a man of science who, whatever may be his special branch of study, has not materially altered his views on some important points within the last twelve years.* The means at our command for obtaining correct views of the laws which govern Nature are ever increasing, and if we only The Origin of Species by means of Natural Selection; or the Preservation of Favoured Races in the Struggle for Life. By Charles Darwin, M.A., F.R.S. Sixth edition, with additions and corrections. (London: J. Murray, 1872.)
3,390 citations
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