• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Seed size, growth rate and gap microsite
Seed size, growth rate and gap microsite

... neotropical pioneer species. We investigated the soil seed bank, and followed seedlings from emergence and establishment to the sapling stage in artificially created gaps in secondary forest on the Barro Colorado Nature Monument, Panamá. 2 To simulate microsite variation within gaps, litter addition ...
Translational selection is operative for synonymous codon usage in
Translational selection is operative for synonymous codon usage in

... genome towards G+C or A+T. For instance, it has been shown that there are regional variations in the G+C content around the genome of Mycoplasma genitalium (McInerney, 1997; Kerr et al., 1997) which exert a great influence on GC3s and, consequently, on codon usage. Perhaps more unexpected was the fi ...
Characterization of Low Molecular Weight Glutenin Subunits by
Characterization of Low Molecular Weight Glutenin Subunits by

... doughs and probably in determining variations in the breadmaking quality of different wheat cultivars (Bietz et al 1973, Payne et al 1984, Hoseney and Rogers 1990). The mechanisms responsible are not completely understood at the molecular level, but the joining together of protein subunits into poly ...
Lecture 1 introduction-2011
Lecture 1 introduction-2011

Environmental responses, not species interactions, determine
Environmental responses, not species interactions, determine

... interspecific interactions is to remove them one-­by-­one, and in combination. If synchrony changes more when we remove environmental stochasticity than when we remove interspecific interactions, we would conclude that environmental fluctuations are the more important driver. In principle, this coul ...
Mojave Fringe-toed Lizard
Mojave Fringe-toed Lizard

... lizard (Callisaurus draconoides). Of these species, only zebra-tailed lizard appears to be a potential competitor for food resources with Mojave fringe-toed lizard. These species are both insectivorous, approximately the same adult size, and likely select prey of similar size. Foraging behavior in t ...
Aligning molecular studies of mycorrhizal fungal diversity
Aligning molecular studies of mycorrhizal fungal diversity

... currently underway. Most published studies, at best, only address species or genera-level resolution. However, several experimental studies indicate that variation in plant performance is large among plants colonised by different individuals of one AMF species. Thus, there is a potential disparity b ...
- Wiley Online Library
- Wiley Online Library

... quantified for tropical forests. We measured dark respiration, R, and nutrient concentration (nitrogen, N and phosphorus, P) of leaves within two forest canopies: in Reserva Jarú, south-west Brazil; and Mbalmayo Reserve, central Cameroon. The data, expressed on a leaf area basis (Ra, Na, Pa ) and a ...
Types of Mutualisms
Types of Mutualisms

Confounding factors in the detection of species responses to habitat
Confounding factors in the detection of species responses to habitat

Simulation of potential habitat overlap between red deer (Cervus
Simulation of potential habitat overlap between red deer (Cervus

... traditional conservation measures target endemic or threatened species, such as the Siberian tiger (Panthera tigris altaica) and giant panda (Ailuropoda melanoleuca), which coexist in similar habitats with some common species; however, these approaches are insufficient for regional biodiversity cons ...
Use of wild–caught individuals as a key factor for success in
Use of wild–caught individuals as a key factor for success in

... more influential for translocation success. These factors included the origin of translocated individuals (captive or wild) and translocation effort (propagule size and program duration). After analyzing 83 programs, corre� sponding to 34 vertebrate species, by means of generalized linear mixed mode ...
The population growth and control of African elephants in Kruger
The population growth and control of African elephants in Kruger

... elephants, there is a minimum necessary population threshold), and yet where elephants exist – indeed, thrive – there are too many of them. That is to say that many elephant populations in wildlife preserves currently are near or exceed the density at which elephant drastically change their landscap ...
A legume genomics resource: The Chickpea Root Expressed
A legume genomics resource: The Chickpea Root Expressed

... through ESTs and contigs derived from them using prestructured queries with user defined variables. The EST database developed in this study provides a profile of the expressed genes that have been sampled from chickpea roots associated with putative annotations related to stress tolerance and root ...
COSEWIC Status report on the Red
COSEWIC Status report on the Red

... There are two subspecies of R. aurora, R. a. aurora and R. a. draytonii. This separation is based on morphological, genetic and behavioural differences (Hayes and Miyamoto 1984; Green 1985; Green 1986b), although the karyotypes of the subspecies are almost identical (Green 1986a). Rana a. aurora occ ...
Comparative Study on Production of Penicillin by Penicillium
Comparative Study on Production of Penicillin by Penicillium

... regions and can be found on salted food products but it is mostly found in indoor environments, especially in damp or water damaged buildings. It has rarely been reported as a cause of human disease. It is the source of several β-lactam antibiotics, most significantly penicillin. Other secondary met ...
Leopardus jacobita, Andean Cat
Leopardus jacobita, Andean Cat

... Leopardus following Eizirik et al. (submitted). The genus Leopardus includes most small Neotropical felids, and speciation within it has been relatively recent compared to other felid lineages (Johnson et al. 2006). While there is strong support for inclusion of the Andean Cat in this genus based on ...
Cyanuric acid hydrolase: evolutionary innovation by structural
Cyanuric acid hydrolase: evolutionary innovation by structural

... four strand antiparallel β-sheet and two helices. This arrangement of RUs confers threefold rotational symmetry in the AtzD monomer reminiscent of a ‘Toblerone’ Bar (viewed end on; Fig. 2A), and it is proposed that this new fold be termed the Toblerone fold. The three RUs of the monomer align with t ...
THE ECOLOGY, EVOLUTION, AND DIVERSIFICATION OF THE
THE ECOLOGY, EVOLUTION, AND DIVERSIFICATION OF THE

... distribution and abundance of plant diversity in California’s vernal pool habitats. The goldfield genus Lasthenia is a particularly compelling system for exploring niche evolution in vernal pool plants because it contains some of the most locally abundant plant species in vernal pools and has been t ...
INSECTS ON PLANTS: Diversity of Herbivore Assemblages Revisited
INSECTS ON PLANTS: Diversity of Herbivore Assemblages Revisited

... assemblages (Novotny & Basset 2000, Price et al. 1995). Quantitative insect-host records enable analyses that deemphasize rare interactions and correct potential bias (e.g., Godfray et al. 1999). ...
SIZE RATIOS
SIZE RATIOS

... potential for evolutionary change. Species that overlap too much in resource use (and presumably in body size) will be driven to extinction; species that are widely separated along the resource axis survive, and the assemblage can subsequently be invaded by species with intermediate phenotypes. Thro ...
garter snake population dynamics from a 16
garter snake population dynamics from a 16

... nocturnal habits (Fitch 1987). In addition, there is typically substantial variation in catchability based on sex or age (e.g., Bonnet and Naulleau 1996). Though longterm data exists for a number of species (e.g., Bronikowski and Arnold 1999, Fitch 1999), studies designed to develop demographic mode ...
Cloning and analysis of the mobile element gypsy from D. virilis
Cloning and analysis of the mobile element gypsy from D. virilis

... the horizontal transmission but rather shows that it might have occurred before the irradiation of the D. virilis species group. Previous studies (8) indicate that homologous to gypsy sequences (as determined by Southern hybridizations) are present in higher number of species than P-element (26) and ...
The role of intra-specific trait variability in plankton biodiversity: a
The role of intra-specific trait variability in plankton biodiversity: a

The Red Queen Hypothesis, first introduced by Leigh Van
The Red Queen Hypothesis, first introduced by Leigh Van

... question to Fisher (1930) and, especially, to Muller (1932), who developed a defense of the advantage of sex based on species selection. Muller argued that recombination through sexual reproduction allowed the immediate introduction into the same lineage of favorable mutations occurring in two diffe ...
< 1 ... 76 77 78 79 80 81 82 83 84 ... 523 >

Molecular ecology

Molecular ecology is a field of evolutionary biology that is concerned with applying molecular population genetics, molecular phylogenetics, and more recently genomics to traditional ecological questions (e.g., species diagnosis, conservation and assessment of biodiversity, species-area relationships, and many questions in behavioral ecology). It is virtually synonymous with the field of ""Ecological Genetics"" as pioneered by Theodosius Dobzhansky, E. B. Ford, Godfrey M. Hewitt and others. These fields are united in their attempt to study genetic-based questions ""out in the field"" as opposed to the laboratory. Molecular ecology is related to the field of Conservation genetics.Methods frequently include using microsatellites to determine gene flow and hybridization between populations. The development of molecular ecology is also closely related to the use of DNA microarrays, which allows for the simultaneous analysis of the expression of thousands of different genes. Quantitative PCR may also be used to analyze gene expression as a result of changes in environmental conditions or different response by differently adapted individuals.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report