Geographic variation in North American gypsy moth cycles
... defoliation is a useful but imperfect proxy for abundance (Bjørnstad et al. 2002). Moreover, aerial surveillance is inherently associated with some level of spatial error (Ciesla 2000). Finally, the underlying spatiotemporal dynamics of these populations are somewhat spatially stochastic (due to geo ...
... defoliation is a useful but imperfect proxy for abundance (Bjørnstad et al. 2002). Moreover, aerial surveillance is inherently associated with some level of spatial error (Ciesla 2000). Finally, the underlying spatiotemporal dynamics of these populations are somewhat spatially stochastic (due to geo ...
Small Mammals in Mbeere, Kenya
... of loss and modification of these habitats is land use practice and has increasingly been implicated in declining biodiversity in recent decades (Soul’e, 1991). Direct loss of species from land varying in use may result from altered habitat conditions or may occur indirectly when animals move out in ...
... of loss and modification of these habitats is land use practice and has increasingly been implicated in declining biodiversity in recent decades (Soul’e, 1991). Direct loss of species from land varying in use may result from altered habitat conditions or may occur indirectly when animals move out in ...
8Core Chpater 12short
... 12.11 Opening Questions: No tuna fish sandwiches if you are pregnant? Pregnant women are advised to limit their consumption of large predatory fish, such as swordfish and tuna, to once per week. These fish may have high levels of mercury stored in their tissues and eating them may damage a developi ...
... 12.11 Opening Questions: No tuna fish sandwiches if you are pregnant? Pregnant women are advised to limit their consumption of large predatory fish, such as swordfish and tuna, to once per week. These fish may have high levels of mercury stored in their tissues and eating them may damage a developi ...
Understanding the implications of climate change for woodland
... migrating or becoming locally extinct, many species also have an ability to adapt in situ to new climatic pressures. This may occur with species that have a large phenotypic plasticity (the ability of individuals to modify their behaviour, morphology or physiology in resp ...
... migrating or becoming locally extinct, many species also have an ability to adapt in situ to new climatic pressures. This may occur with species that have a large phenotypic plasticity (the ability of individuals to modify their behaviour, morphology or physiology in resp ...
Molecular Cloning, Sequencing, and Expression of the Glutamine
... inhibition by metabolites that originate from glutamine and, in the case of Bacillus spp., by glutamine itself. A novel hexameric enzyme from Bacteroides fragilis has little DNA or protein sequence similarity with other GSs and lacks an adenylylation site (19). Multiple GSs have been found in severa ...
... inhibition by metabolites that originate from glutamine and, in the case of Bacillus spp., by glutamine itself. A novel hexameric enzyme from Bacteroides fragilis has little DNA or protein sequence similarity with other GSs and lacks an adenylylation site (19). Multiple GSs have been found in severa ...
Identification, cloning and sequence determination of genes specifying hexokinase A and B from yeast.
... this tryptic peptide had been tentatively assigned as spanning residues 385-396 in the approximated structure derived from x-ray crystallography (5), the 5' and 3' ends of the HKB structural gene were calculated to be roughly 1170 nucleotides upstream and 210 downstream from the PstI site. Since a n ...
... this tryptic peptide had been tentatively assigned as spanning residues 385-396 in the approximated structure derived from x-ray crystallography (5), the 5' and 3' ends of the HKB structural gene were calculated to be roughly 1170 nucleotides upstream and 210 downstream from the PstI site. Since a n ...
Biodiversity and Ecosystem Functioning: Basic
... species within one group have a similar function in the system. For the maintenance of ecosystem functioning, a minimal set of functional groups is essential, but species within a group are at least partially substitutable and thus ‘redundant’ (Lawton and Brown, chapter 12 in Schulze and Mooney 1993 ...
... species within one group have a similar function in the system. For the maintenance of ecosystem functioning, a minimal set of functional groups is essential, but species within a group are at least partially substitutable and thus ‘redundant’ (Lawton and Brown, chapter 12 in Schulze and Mooney 1993 ...
Advantages and disadvantages of interferencecompetitive ability
... (Bullard et al. 2004, Duyck et al. 2006, Harris and Macdonald 2007). Because most studies emphasize one mechanism exclusively, they tend to neglect the other mechanism even when it is likely to be important (Petren and Case 1996, Amarasekare 2002). For example, although many studies have ...
... (Bullard et al. 2004, Duyck et al. 2006, Harris and Macdonald 2007). Because most studies emphasize one mechanism exclusively, they tend to neglect the other mechanism even when it is likely to be important (Petren and Case 1996, Amarasekare 2002). For example, although many studies have ...
Disturbance and distributions: avoiding exclusion in a warming world
... elevation treeline, thus expanding the area for high elevation vegetation that cannot otherwise persist under tree cover. The role of disturbance in influencing interspecific competition and resulting species persistence and distributions appears unjustly neglected. I identify various implications, ...
... elevation treeline, thus expanding the area for high elevation vegetation that cannot otherwise persist under tree cover. The role of disturbance in influencing interspecific competition and resulting species persistence and distributions appears unjustly neglected. I identify various implications, ...
Impacts of insect herbivores on rare plant populations
... the potential for insect herbivory to affect plant populations. Crawley (1989), among others, argued forcefully that the enormous literature documenting insect herbivore damage to plant individuals supported little in the way of strong conclusions about impacts on populations, and there was (then) l ...
... the potential for insect herbivory to affect plant populations. Crawley (1989), among others, argued forcefully that the enormous literature documenting insect herbivore damage to plant individuals supported little in the way of strong conclusions about impacts on populations, and there was (then) l ...
Fungal soil communities in a young transgenic poplar plantation
... plantations. The goal of this study was to analyze fungal biodiversity in their belowground habitats and to gain information on the strategies by which ectomycorrhizal (ECM) fungi form colonies. In a 2-year-old plantation, fungal communities in the soil and roots of three different poplar genotypes ...
... plantations. The goal of this study was to analyze fungal biodiversity in their belowground habitats and to gain information on the strategies by which ectomycorrhizal (ECM) fungi form colonies. In a 2-year-old plantation, fungal communities in the soil and roots of three different poplar genotypes ...
Competitive ability of the epilithic moss Thuidium
... been recognized: turfs – plants with parallel upright shoots, smooth mats – with dense and interwoven shoots extending horizontally, and wefts- with loose inter-twining shoots often ascending (Gimingham & Cunninghan 1957). Species also have exclusive traits such as flagelliform branches that may be ...
... been recognized: turfs – plants with parallel upright shoots, smooth mats – with dense and interwoven shoots extending horizontally, and wefts- with loose inter-twining shoots often ascending (Gimingham & Cunninghan 1957). Species also have exclusive traits such as flagelliform branches that may be ...
Phenological Time-Series of Bird Migration: Eleven Years of
... Migration is an event of central importance for the great majority of bird species breeding in Europe. It is also an evolutionarily very interesting phenomenon with bird populations moving to new environments in which different selection pressures operate and where probably the biggest selection pre ...
... Migration is an event of central importance for the great majority of bird species breeding in Europe. It is also an evolutionarily very interesting phenomenon with bird populations moving to new environments in which different selection pressures operate and where probably the biggest selection pre ...
Genetic Diversity
... • Restoration ecology seeks to initiate or speed up the recovery of degraded ecosystems. • A basic assumption of restoration ecology is that most environmental damage is reversible. • Two key strategies are bioremediation and augmentation of ecosystem processes. Copyright © 2008 Pearson Education, I ...
... • Restoration ecology seeks to initiate or speed up the recovery of degraded ecosystems. • A basic assumption of restoration ecology is that most environmental damage is reversible. • Two key strategies are bioremediation and augmentation of ecosystem processes. Copyright © 2008 Pearson Education, I ...
HDC Project Self Assessment And Report Form
... chelex/proteinaseK solution. The PCR technique used primers that amplify DNA from the variable ITS region of the ribosomal RNA. Because of the variability in this region these primers were expected to give rise to products of different sizes for each potential food source species after the DNA has b ...
... chelex/proteinaseK solution. The PCR technique used primers that amplify DNA from the variable ITS region of the ribosomal RNA. Because of the variability in this region these primers were expected to give rise to products of different sizes for each potential food source species after the DNA has b ...
The Adaptive Radiation of Cichlid Fish in Lake Tanganyika: A
... of the radiation has happened in a riverine environment, a habitat generally considered as not suitable to host a radiation [43]. The biological characteristics of the Lake Tanganyika cichlid species assemblage with a clear resource partitioning between most tribes and the relative age of the East A ...
... of the radiation has happened in a riverine environment, a habitat generally considered as not suitable to host a radiation [43]. The biological characteristics of the Lake Tanganyika cichlid species assemblage with a clear resource partitioning between most tribes and the relative age of the East A ...
Apparent predation risk: tests of habitat selection theory reveal
... quality. So individuals matching the perceived lower marginal value of the habitat (Charnov, 1976) will, on average, forage more intensely. And they will forage any rich patches they do encounter to a lower resource density than if their assessment of habitat quality was higher. If those patches ten ...
... quality. So individuals matching the perceived lower marginal value of the habitat (Charnov, 1976) will, on average, forage more intensely. And they will forage any rich patches they do encounter to a lower resource density than if their assessment of habitat quality was higher. If those patches ten ...
Koala (Phascolarctos cinereus) – Fact Sheet
... distribution. Chlamydia infections, which often cause infertility in females, coupled with habitat loss and degradation pose major threats to koala populations and lead to local extinctions. Urban development is also a major threat as it leads to tree loss and exposes koalas to predation by dogs and ...
... distribution. Chlamydia infections, which often cause infertility in females, coupled with habitat loss and degradation pose major threats to koala populations and lead to local extinctions. Urban development is also a major threat as it leads to tree loss and exposes koalas to predation by dogs and ...
Common Ancestry Is a Poor Predictor of Competitive Traits in
... phylogenetic signal, patterns of common ancestry can be used as reasonable proxies for species' trait variability. The expectation that closely related species should be more phenotypically similar than distantly related species is intuitive, and it is also a pattern that is predicted by certain nul ...
... phylogenetic signal, patterns of common ancestry can be used as reasonable proxies for species' trait variability. The expectation that closely related species should be more phenotypically similar than distantly related species is intuitive, and it is also a pattern that is predicted by certain nul ...
- University of Hawaii at Manoa
... have been a focus of ecological investigation not only to better understand those particular species and ecosystems, but also to gain insights into broader ecological principles. Indeed, such fundamental ecological concepts as open populations, recruitment limitation, lottery models, and the mechani ...
... have been a focus of ecological investigation not only to better understand those particular species and ecosystems, but also to gain insights into broader ecological principles. Indeed, such fundamental ecological concepts as open populations, recruitment limitation, lottery models, and the mechani ...
TEKS 8.11 A and B - UNT College of Education
... practice sun safety increase their risk of developing skin cancer and a diet with too much processed sugar contributes to development of Type II diabetes. Americans represent most of the population where Type II diabetes is present. In the case of legal and illegal drugs, permanent changes may occur ...
... practice sun safety increase their risk of developing skin cancer and a diet with too much processed sugar contributes to development of Type II diabetes. Americans represent most of the population where Type II diabetes is present. In the case of legal and illegal drugs, permanent changes may occur ...
Susquenita Curriculum PENNSYLVANIA Course: Science Grade 7
... CLIMATE - Explain the relationship between the energy provided by the sun and the temperature differences among water, land and atmosphere. 4.5.8.D. -- Compact Use the theory of natural selection to examine the causes and consequences of extinction. S8.A.1.2.2 -- Compact Identify environmental issue ...
... CLIMATE - Explain the relationship between the energy provided by the sun and the temperature differences among water, land and atmosphere. 4.5.8.D. -- Compact Use the theory of natural selection to examine the causes and consequences of extinction. S8.A.1.2.2 -- Compact Identify environmental issue ...
Bird response to disturbance varies with forest productivity in the
... disturbance regimes differ among ecosystems as determined by climate, soils, forest productivity, disturbance type, and other factors (Pickett and White 1985; Spies and Turner 1999). Because organisms are often adapted to natural disturbance and landscape dynamics, natural range of variation is some ...
... disturbance regimes differ among ecosystems as determined by climate, soils, forest productivity, disturbance type, and other factors (Pickett and White 1985; Spies and Turner 1999). Because organisms are often adapted to natural disturbance and landscape dynamics, natural range of variation is some ...