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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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Journal ArticleDOI
17 Sep 2013-PeerJ
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.

14 citations

Journal ArticleDOI
TL;DR: Effective rearing methods are needed to recover the federally endangered Salt Creek tiger beetle, Cicindela (Ellipsoptera) nevadica lincolniana Casey, a subspecies that occurs exclusively in saline wetlands and seeps along Little Salt Creek in Lancaster County, Nebraska.
Abstract: Effective rearing methods are needed to recover the federally endangered Salt Creek tiger beetle, Cicindela (Ellipsoptera) nevadica lincolniana Casey, a subspecies that occurs exclusively in saline wetlands and seeps along Little Salt Creek in Lancaster County, Nebraska. Experiments were initiated to determine soil type and salinity concentrations appropriate for stimulating female oviposition in laboratory settings to produce larvae and/or adults for reintroduction to native habitats. In 2013, there were highly significant differences between native soil and a sand/loess soil mixture, but no differences between two salinity levels, 0.354 M and 0.5 M. In 2014, using only a sand/loess soil mixture, there were again no differences between the test salinity levels. A sand/loess soil mixture of either 0.354 M or 0.5 M salinity was determined to be optimum for egg production.

7 citations

References
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Journal ArticleDOI
14 Mar 2003-Science
TL;DR: In chinook salmon, hatchery rearing relaxes natural selection favoring large eggs, allowing fecundity selection to drive exceptionally rapid evolution of small eggs, and trends toward small eggs are also evident in natural populations heavily supplemented by hatcheries, but not in minimally supplemented populations.
Abstract: Captive breeding and release programs, widely used to supplement populations of declining species, minimize juvenile mortality to achieve rapid population growth However, raising animals in benign environments may promote traits that are adaptive in captivity but maladaptive in nature In chinook salmon, hatchery rearing relaxes natural selection favoring large eggs, allowing fecundity selection to drive exceptionally rapid evolution of small eggs Trends toward small eggs are also evident in natural populations heavily supplemented by hatcheries, but not in minimally supplemented populations Unintentional selection in captivity can lead to rapid changes in critical life-history traits that may reduce the success of supplementation or reintroduction programs

319 citations


"Niche Specialization and Conservati..." refers background in this paper

  • ...In many organisms the genetic or phenotypic change in an organism can be very rapid (Snyder et al. 1996 a, Lewis and Thomas 2001, Heath et al. 2003, Dzurisin 2005,)....

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Journal ArticleDOI
TL;DR: An analysis of ecological characteristics of 23 threatened and 72 nonthreatened butterfly species reveals that threatened butterflies are characterized by narrow niche breadth, restricted resource distribution, poor dispersal ability, and short flight period, and an ecological extinction risk rank is constructed.
Abstract: Understanding the ultimate causes of population declines and extinction is vital in our quest to stop the currently rampant biodiversity loss. Comparison of ecological characteristics between threatened and nonthreatened species may reveal these ultimate causes. Here, we report an analysis of ecological characteristics of 23 threatened and 72 nonthreatened butterfly species. Our analysis reveals that threatened butterflies are characterized by narrow niche breadth, restricted resource distribution, poor dispersal ability, and short flight period. Based on the characteristics, we constructed an ecological extinction risk rank and predicted which of the currently nonthreatened species are at the highest risk of extinction. Our analysis reveals that two species currently classified as nonthreatened are, in fact, at high risk of extinction, and that the status of a further five species should be reconsidered.

282 citations


"Niche Specialization and Conservati..." refers background in this paper

  • ...An organism‟s risk of extinction is linked to the width of its ecological niche (Kammer et al. 1997, Kotiaho et al. 2005)....

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  • ...Some suggest that those individuals residing in a narrow niche are the first individuals most likely to succumb to extinction (Kammer et al. 1997, Kotiaho et al. 2005)....

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  • ...Comparing ecological characters of threatened and nonthreatened organisms could lead to a deeper understanding of what causes a species to become extinct (Kotiaho et al. 2005)....

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  • ...Organisms that are highly specialized, such as in the case of C. n. lincolniana, are thought to be more susceptible to extinction due to habitat destruction (Kammer et al 1997, Kotiaho et al. 2005)....

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  • ...Evidence suggests that variability within an ecologically functional trait is relevant to determining the cause of niche breadth (Roughgarden 1972, Kammer et al 1997, Kotiaho et al. 2005)....

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Book
01 Jan 1995
TL;DR: The Mainspolutﲉﲏﲎ Exﲈﲌﲒﲐﲑﲁﲆﲀﲜﲞﲕﲔ�f�
Abstract: The Mainspring of Evolution Extinction:Bad Genes or Bad Luck? Homo sapiens,the Pinnacle of Evolution? Value in Diversity Human Impact of the Past The Sixth Extinction

272 citations

Book
01 Jan 2005
TL;DR: In this paper, the authors discuss the need for insect diversity conservation and the special case of insects in conservation biology, and the conservation of ecosystem processes with the aim of restoring the diversity of insects.
Abstract: Preface Part I. The Need for Insect Diversity Conservation: 1. Ethical foundation for insect conservation 2. The special case of insects in conservation biology 3. Insects and the conservation of ecosystem processes Part II. Insects and the Changing World: 4. Degradation and fragmentation of ecosystems 5. Responses by insects to the changing land mosaic 6. Threats from invasive aliens, biological control, and genetic engineering 7. Global climate change and synergistic impacts Part III. Conserving and Managing Insect Diversity: 8. Methods, approaches, and prioritization criteria 9. Mapping, inventorying, and monitoring 10. Managing for insect diversity 11. Restoration of insect diversity 12. Conventions and social issues in insect diversity conservation References Index.

240 citations

Book
01 Aug 1996
TL;DR: A decidedly non-theoretical guide to ecomanagement addressing managers and environmentalists already working to preserve lands nationwide is presented in this article. But the authors summarize the common characteristics of 105 representative ecosystem management sites, presenting two-page descriptions in which the project areas ar
Abstract: A decidedly non-theoretical guide to ecomanagement addressing managers and environmentalists already working to preserve lands nationwide. The authors summarize the common characteristics of 105 representative ecosystem management sites, presenting two-page descriptions in which the project areas ar

193 citations


"Niche Specialization and Conservati..." refers background in this paper

  • ...Yeffee et al. (1996) states that “…public opposition is the major constraint to implementing ecosystem management plans in the United States.”...

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