Environmental Science Unit 2
... them, the energy captured is used to make cells in both producers and consumers. The total amount of organic matter present in a trophic level is called biomass. ...
... them, the energy captured is used to make cells in both producers and consumers. The total amount of organic matter present in a trophic level is called biomass. ...
Inclusion of facilitation into ecological theory
... of recent field investigations of facilitation is that survivorship can be positively related to population density. It is widely appreciated that positive density dependence can occur at low densities via the Allee effect, which can increase fertilization rates and propagule survival. But recent wo ...
... of recent field investigations of facilitation is that survivorship can be positively related to population density. It is widely appreciated that positive density dependence can occur at low densities via the Allee effect, which can increase fertilization rates and propagule survival. But recent wo ...
We have provided a template for your use in
... How do natural and agricultural ecosystems differ? What is meant by productivity? How is net productivity calculated? What are pests and pesticides? What are the features of an efficient pesticide? How are biological agents used to control pests? What is integrated pest management? How does rearing ...
... How do natural and agricultural ecosystems differ? What is meant by productivity? How is net productivity calculated? What are pests and pesticides? What are the features of an efficient pesticide? How are biological agents used to control pests? What is integrated pest management? How does rearing ...
Evolution in metacommunities - Philosophical Transactions of the
... Moving this model to the community level, there are two levels at which ‘propagules’ can be recognized. As with the single-species populations, individual migrants or propagules may migrate to found new communities. In addition, propagules may consist of single species migrating independently of oth ...
... Moving this model to the community level, there are two levels at which ‘propagules’ can be recognized. As with the single-species populations, individual migrants or propagules may migrate to found new communities. In addition, propagules may consist of single species migrating independently of oth ...
Determinants of Distribution
... • populations can be either source (birth rate exceeds death rate; b > d) or sink (death rate exceed birth rate; d > b) populations • sink populations depend on immigration (i) from source populations • peripheral populations of a species range are often sink populations b) Species may be absent in ...
... • populations can be either source (birth rate exceeds death rate; b > d) or sink (death rate exceed birth rate; d > b) populations • sink populations depend on immigration (i) from source populations • peripheral populations of a species range are often sink populations b) Species may be absent in ...
Molecular identification of tephritid fruit flies
... morphological and molecular methods were employed in the species identification. Morphological features only identified B. invadens but could not establish the species of Ceratitis present. Given the existence of morphologically indistinguishable species complexes both in Bactrocera and Ceratitis sp ...
... morphological and molecular methods were employed in the species identification. Morphological features only identified B. invadens but could not establish the species of Ceratitis present. Given the existence of morphologically indistinguishable species complexes both in Bactrocera and Ceratitis sp ...
Identification of Virgibacillus species using 16S rRNA gene Sequence
... The rRNA based analysis is a central method in microbiology used not only to explore microbial diversity but also to identify new strains. The genomic DNA was extracted from isolated bacterial strain AMBU07 and universal primers 27F and 939R were used for the amplification and sequencing of the 16S ...
... The rRNA based analysis is a central method in microbiology used not only to explore microbial diversity but also to identify new strains. The genomic DNA was extracted from isolated bacterial strain AMBU07 and universal primers 27F and 939R were used for the amplification and sequencing of the 16S ...
Haplodiploidy seems to facilitate queen re
... Virtually every place on earth capable of sustaining living organisms is occupied by species exploiting those niches. Furthermore, places are constantly contested by new colonizers, trying to establish themselves. In social insects, one can visualize two different, opposing strategies for starting a ...
... Virtually every place on earth capable of sustaining living organisms is occupied by species exploiting those niches. Furthermore, places are constantly contested by new colonizers, trying to establish themselves. In social insects, one can visualize two different, opposing strategies for starting a ...
BLAST- bioinformatics
... Reasons for performing BLAST searches • There can be many reasons, but common ones are: Human or Computational annotation: For non-model systems, for which little bench work has been done compared to a model system, sequence alignments with known, experimentally verified genes, can aid in the assig ...
... Reasons for performing BLAST searches • There can be many reasons, but common ones are: Human or Computational annotation: For non-model systems, for which little bench work has been done compared to a model system, sequence alignments with known, experimentally verified genes, can aid in the assig ...
Mammals on mountainsides: elevational patterns of diversity
... GEB228.fm Page 102 Tuesday, February 20, 2001 6:38 PM ...
... GEB228.fm Page 102 Tuesday, February 20, 2001 6:38 PM ...
Linking community and ecosystem dynamics through spatial
... material) and the second axis the rates or scales of the coupling agents (the grain). Studies belonging to the two traditions of spatial ecology can be positioned along this continuum. Vertical axis: Along the first axis, food web metacommunity ecology focuses on the movement of living organisms and ...
... material) and the second axis the rates or scales of the coupling agents (the grain). Studies belonging to the two traditions of spatial ecology can be positioned along this continuum. Vertical axis: Along the first axis, food web metacommunity ecology focuses on the movement of living organisms and ...
chapter 9
... b. Changes in vegetation during secondary succession also change the numbers and types of animals and decomposers. B. The classic view of ecological succession is that it is an orderly sequence, each stage leading to the next, more stable stage until a climax community is reached. Such a community w ...
... b. Changes in vegetation during secondary succession also change the numbers and types of animals and decomposers. B. The classic view of ecological succession is that it is an orderly sequence, each stage leading to the next, more stable stage until a climax community is reached. Such a community w ...
Biodiversity - University of London International Programmes
... This guide was prepared for the University of London International Programmes by: Dr G. Perry, BSc, MSc, PhD, Senior Lecturer, The School of Geography, Geology and Environmental Science, University of Auckland, New Zealand. This is one of a series of subject guides published by the University. We r ...
... This guide was prepared for the University of London International Programmes by: Dr G. Perry, BSc, MSc, PhD, Senior Lecturer, The School of Geography, Geology and Environmental Science, University of Auckland, New Zealand. This is one of a series of subject guides published by the University. We r ...
Briefing Paper BIO327
... principles specifically relating to wildlife and how these principles underpin wildlife management strategies. A strong emphasis is placed on factors such as nutrition, competition and predation in a management context. The population dynamics of wildlife, sustainable harvesting and survey technique ...
... principles specifically relating to wildlife and how these principles underpin wildlife management strategies. A strong emphasis is placed on factors such as nutrition, competition and predation in a management context. The population dynamics of wildlife, sustainable harvesting and survey technique ...
Bio 211 Genetics Laboratory Experiment 5: Human Population
... H0: The population is in Hardy-Weinberg equilibrium. In order to calculate the χ2 value, observed numbers of the different genotypes are compared to the expected numbers under the assumption of Hardy-Weinberg equilibrium. ...
... H0: The population is in Hardy-Weinberg equilibrium. In order to calculate the χ2 value, observed numbers of the different genotypes are compared to the expected numbers under the assumption of Hardy-Weinberg equilibrium. ...
Going for the kill: observation of a wolf
... Inter-specific competition among carnivores has important implications for the structure and function of carnivore communities (Caro and Stoner 2003). The mechanisms of carnivore interactions are however, far from understood, yet key to enabling or hindering their coexistence, and hence are highly r ...
... Inter-specific competition among carnivores has important implications for the structure and function of carnivore communities (Caro and Stoner 2003). The mechanisms of carnivore interactions are however, far from understood, yet key to enabling or hindering their coexistence, and hence are highly r ...
concepts-of-biology
... that are distributed densely, or sparsely. There are also populations with small numbers of individuals that may be dense or very sparsely distributed in a local area. Population size can affect potential for adaptation because it affects the amount of genetic variation present in the population. De ...
... that are distributed densely, or sparsely. There are also populations with small numbers of individuals that may be dense or very sparsely distributed in a local area. Population size can affect potential for adaptation because it affects the amount of genetic variation present in the population. De ...
The Genus Clusia L. - Ruhr
... rDNA and ITS2 is between 619 and 631 bp (Table 1). The ITS1 region (255 to 260 bp) is longer than ITS2 (208 to 210 bp). The outgroup species Hypericum calycinum (L.) exceeds these ranges, exhibiting an ITS1 length of 244 bp and an ITS2 length of 231 bp. The 5.8S DNA consists of 156 bp (sites 278 to ...
... rDNA and ITS2 is between 619 and 631 bp (Table 1). The ITS1 region (255 to 260 bp) is longer than ITS2 (208 to 210 bp). The outgroup species Hypericum calycinum (L.) exceeds these ranges, exhibiting an ITS1 length of 244 bp and an ITS2 length of 231 bp. The 5.8S DNA consists of 156 bp (sites 278 to ...
population growth - IB
... It needs a component in it that will slow down the population growth as it reaches a certain point, the carrying capacity of the environment (K) The equation is called the logistic equation dN/dt = rN[(K-N)/N] When N
... It needs a component in it that will slow down the population growth as it reaches a certain point, the carrying capacity of the environment (K) The equation is called the logistic equation dN/dt = rN[(K-N)/N] When N
The Department of Ecology and Environmental Science
... The Department of Ecology and Environmental Science offers seven different study programmes and a wide range of independent courses for approx 500 full-time students. Also Master's programmes in Biology and Geoecology are offered for foreign students. The Department of Ecology and Environmental Scie ...
... The Department of Ecology and Environmental Science offers seven different study programmes and a wide range of independent courses for approx 500 full-time students. Also Master's programmes in Biology and Geoecology are offered for foreign students. The Department of Ecology and Environmental Scie ...
4e - scientific protocol
... priori and each is covered at least 4 times. The ideal interval between transects and their length is calculated considering the target species, the home range area and the entity of estimated movements between foraging areas. Transect are chosen in order to intercept those movements, therefore are ...
... priori and each is covered at least 4 times. The ideal interval between transects and their length is calculated considering the target species, the home range area and the entity of estimated movements between foraging areas. Transect are chosen in order to intercept those movements, therefore are ...