Predator-prey dynamics
... motivating (and highly representative) dataset of coyotes and jackrabbits suggesting persistent cycles? Our modeling toolkit may have the answer since multiple mechanisms could be operating simultaneously. Importantly, stabilizing and destabilizing mechanisms could very likely be in operation in a b ...
... motivating (and highly representative) dataset of coyotes and jackrabbits suggesting persistent cycles? Our modeling toolkit may have the answer since multiple mechanisms could be operating simultaneously. Importantly, stabilizing and destabilizing mechanisms could very likely be in operation in a b ...
Grassland Bird Monitoring
... 3. A determination of where on the landscape sufficient amounts of habitat of the required types can be protected or restored to support bird population objectives. (Northern Bobwhite Conservation | Ecological Potential Model) 4. An assessment of ownership patterns and trends in land use to determin ...
... 3. A determination of where on the landscape sufficient amounts of habitat of the required types can be protected or restored to support bird population objectives. (Northern Bobwhite Conservation | Ecological Potential Model) 4. An assessment of ownership patterns and trends in land use to determin ...
Molecular cloning, characterization, and homologous
... endochitinase gene from Bt serovar morrisoni has not been characterized yet. In our previous study (8), the chitinase A (chiA) gene of Serratia marcescens Bn10 was expressed in Bt serovar morrisoni 3023. The effects of pH, temperature, and metal ions on both chitinases produced by recombinant and pa ...
... endochitinase gene from Bt serovar morrisoni has not been characterized yet. In our previous study (8), the chitinase A (chiA) gene of Serratia marcescens Bn10 was expressed in Bt serovar morrisoni 3023. The effects of pH, temperature, and metal ions on both chitinases produced by recombinant and pa ...
principles of ecology
... successfully. These organisms may be separated in space and time into smaller groups called populations. For example human populations live in different geographical areas but all belong to the species, Homo Sapiens. 25.4 POPULATION ‘Population’ is defined as a group of freely interbreeding individu ...
... successfully. These organisms may be separated in space and time into smaller groups called populations. For example human populations live in different geographical areas but all belong to the species, Homo Sapiens. 25.4 POPULATION ‘Population’ is defined as a group of freely interbreeding individu ...
Ecological consequences of genetic diversity
... different possible metrics of genetic diversity (Table 1). The variation in allelic states or phenotypic traits may either be neutral or non-neutral with respect to fitness consequences. For example, molecular markers, such as microsatellites, AFLPs, direct DNA sequences or protein polymorphisms (Av ...
... different possible metrics of genetic diversity (Table 1). The variation in allelic states or phenotypic traits may either be neutral or non-neutral with respect to fitness consequences. For example, molecular markers, such as microsatellites, AFLPs, direct DNA sequences or protein polymorphisms (Av ...
distribution and temporal variation of the benthic fauna in a tidal flat
... tidal levels, the highest values being recorded at high levels. The benthic community was characterized by low species richness but great abundance of individuals, mainly the bivalve Darina solenoides and M. e. platensis. This feature has been mentioned for different estuarine areas of the South Atl ...
... tidal levels, the highest values being recorded at high levels. The benthic community was characterized by low species richness but great abundance of individuals, mainly the bivalve Darina solenoides and M. e. platensis. This feature has been mentioned for different estuarine areas of the South Atl ...
Phylogenetic relationship of phototrophic purple sulfur bacteria
... PSB constitute the order Chromatiales, and comprise the Chromatiaceae and Ectothiorhodospiraceae families, which can be easily distinguished by their ability to store elemental sulfur inside or outside the cells as an intermediate during photosynthesis. Functional gene approaches can support phyloge ...
... PSB constitute the order Chromatiales, and comprise the Chromatiaceae and Ectothiorhodospiraceae families, which can be easily distinguished by their ability to store elemental sulfur inside or outside the cells as an intermediate during photosynthesis. Functional gene approaches can support phyloge ...
Leaf size, specific leaf area and microhabitat
... system in which to examine these relationships. Mediterranean climates, which occur in California, Chile, South Africa, Australia and the Mediterranean basin, are characterized by cool wet winters and hot dry summers, during which low water availability severely limits carbon gain. The woody vegetat ...
... system in which to examine these relationships. Mediterranean climates, which occur in California, Chile, South Africa, Australia and the Mediterranean basin, are characterized by cool wet winters and hot dry summers, during which low water availability severely limits carbon gain. The woody vegetat ...
Interactions between granivorous and omnivorous ants in a desert
... 1.8 ants/plot on bait/colony on Removal and Control plots while granivores averaged 9.8 and 7.0 ants/plot on bait/colony. Following the initiation of the experiment, the number of granivore colonies decreased on Removal plots by about 40% (20 vs. 33.9 colonies/616 m2) as did granivore worker activit ...
... 1.8 ants/plot on bait/colony on Removal and Control plots while granivores averaged 9.8 and 7.0 ants/plot on bait/colony. Following the initiation of the experiment, the number of granivore colonies decreased on Removal plots by about 40% (20 vs. 33.9 colonies/616 m2) as did granivore worker activit ...
General Equilibrium of an Ecosystem
... ecosystem incurs habitat destruction, how will predator-prey populations be altered? Other authors have used metapopulation models to address the same question (Bascompte and Sole, 1998). Economic models are used to investigate economic stability: If a policy causes a change in the number of firms i ...
... ecosystem incurs habitat destruction, how will predator-prey populations be altered? Other authors have used metapopulation models to address the same question (Bascompte and Sole, 1998). Economic models are used to investigate economic stability: If a policy causes a change in the number of firms i ...
Community assembly and invasion: An experimental Joseph Fargione* , Cynthia S. Brown
... There are a variety of plausible mechanisms that could cause resident functional guilds to most strongly inhibit members of their own functional guild. Indeed, any of a wide variety of niche-based mechanisms of multispecies coexistence could be responsible. Based on earlier studies at this site (25, ...
... There are a variety of plausible mechanisms that could cause resident functional guilds to most strongly inhibit members of their own functional guild. Indeed, any of a wide variety of niche-based mechanisms of multispecies coexistence could be responsible. Based on earlier studies at this site (25, ...
What is going on with the silver Y, Autographa gamma?
... & Rosenthal 2000). The larvae of the silver Y can cause considerable damage to crops, especially in circum-Mediterranean regions, but their impact on natural ecosystems is not well understood. Taking into account their abundance, strong polyphagy (they are known from 311 plant species, all herbs) an ...
... & Rosenthal 2000). The larvae of the silver Y can cause considerable damage to crops, especially in circum-Mediterranean regions, but their impact on natural ecosystems is not well understood. Taking into account their abundance, strong polyphagy (they are known from 311 plant species, all herbs) an ...
Biodiversity in grasslands: current changes and scenarios for the
... changes. There are various possible scenarios of change in biodiversity for the next century, according to the report by Sala et al. (2000). The report discusses the sensitivity of biomes to the different global changes. They screened five drivers of change: land use; climate; nitrogen deposition; b ...
... changes. There are various possible scenarios of change in biodiversity for the next century, according to the report by Sala et al. (2000). The report discusses the sensitivity of biomes to the different global changes. They screened five drivers of change: land use; climate; nitrogen deposition; b ...
2 How Do Population Changes Happen?
... $ARWIN OBSERVED THAT THE ANIMALS AND PLANTS ON THE 'ALÈPAGOS )SLANDS WERE SIMILAR TO THOSE IN %CUADOR (OWEVER THEY WERE NOT IDENTICAL &OR EXAMPLE $ARWIN CLOSELY OBSERVED BIRDS CALLED FINCHES 4HE FINCHES ON THE 'ALÈPAGOS )SLANDS WERE SLIGHTLY DIFFERENT FROM THE FINCHES IN %CUADOR )N ADDITION T ...
... $ARWIN OBSERVED THAT THE ANIMALS AND PLANTS ON THE 'ALÈPAGOS )SLANDS WERE SIMILAR TO THOSE IN %CUADOR (OWEVER THEY WERE NOT IDENTICAL &OR EXAMPLE $ARWIN CLOSELY OBSERVED BIRDS CALLED FINCHES 4HE FINCHES ON THE 'ALÈPAGOS )SLANDS WERE SLIGHTLY DIFFERENT FROM THE FINCHES IN %CUADOR )N ADDITION T ...
Antagonistic effects of seed dispersal and herbivory
... and deer-browsed plants are more likely to revert to smaller size classes and less likely to become or remain reproductive than non-browsed plants (Knight 2003). As population growth rate (k) is most sensitive to these transitions, deer herbivory has a strong negative effect on k (Rooney & Gross 200 ...
... and deer-browsed plants are more likely to revert to smaller size classes and less likely to become or remain reproductive than non-browsed plants (Knight 2003). As population growth rate (k) is most sensitive to these transitions, deer herbivory has a strong negative effect on k (Rooney & Gross 200 ...
The recent declines of farmland bird populations in Britain: an
... post-fledging survival, which is another (usually unknown) component of reproductive success. Clearly, we need good measures of seasonal production, if we are fully to understand the demographic parameters that have underlain population declines. In addition to the BTO data, other wide-scale or long ...
... post-fledging survival, which is another (usually unknown) component of reproductive success. Clearly, we need good measures of seasonal production, if we are fully to understand the demographic parameters that have underlain population declines. In addition to the BTO data, other wide-scale or long ...
The ecology of vertebrate pests and integrated pest management
... (Engeman and Witmer, 2000~).Monitoring allows one, first of all, to determine just what species of rodents occur in the irea. Several to numerous rodent species may occur in any given area, but in many situations only one species is causing the damage. ICnowing what species are in the area is import ...
... (Engeman and Witmer, 2000~).Monitoring allows one, first of all, to determine just what species of rodents occur in the irea. Several to numerous rodent species may occur in any given area, but in many situations only one species is causing the damage. ICnowing what species are in the area is import ...
Facilitation among plants as an insurance policy for diversity in
... Bertness 2003; Michalet et al. 2006; McIntire & Fajardo 2014; Soliveres, Smit & Maestre 2015). Positive interactions are defined as non-trophic interspecific interactions that increase the average individual fitness of one species (Bertness & Callaway 1994; Callaway 1995, 2007; Bruno, Stachowicz & Bert ...
... Bertness 2003; Michalet et al. 2006; McIntire & Fajardo 2014; Soliveres, Smit & Maestre 2015). Positive interactions are defined as non-trophic interspecific interactions that increase the average individual fitness of one species (Bertness & Callaway 1994; Callaway 1995, 2007; Bruno, Stachowicz & Bert ...
Competition Within and Between Species of Parasitoid Wasps
... distinct in terms of its “profession,” i.e., the sum of activities and relationships in which it engages to secure and use the resources necessary for its survival and reproduction. This is its niche. (If there were no constraints at all on its acquisition and use of resources, each species could ex ...
... distinct in terms of its “profession,” i.e., the sum of activities and relationships in which it engages to secure and use the resources necessary for its survival and reproduction. This is its niche. (If there were no constraints at all on its acquisition and use of resources, each species could ex ...
Newsletter
... on from one generation to the next, using the example of maniocin Bantu societies of Gabon, central Africa. They collected and genotyped varieties grown in 10 communities in Gabon, and found that the genetic diversity of manioc clustered into distinct geographic regions, wi ...
... on from one generation to the next, using the example of maniocin Bantu societies of Gabon, central Africa. They collected and genotyped varieties grown in 10 communities in Gabon, and found that the genetic diversity of manioc clustered into distinct geographic regions, wi ...
Chapter 5 review ES
... D. A successful individual will be well adapted to its environment and produce a few high quality offspring. ...
... D. A successful individual will be well adapted to its environment and produce a few high quality offspring. ...
Reintroduction of Eurasian beaver to Scotland
... 3. SWT believe that the reintroduction of the Eurasian beaver would (in the long term) be a valuable tool for restoring wetland habitats, reducing management intervention requirements and increasing the robustness of ecosystems in the face of threats such as climate change. 4. SWT believe that the S ...
... 3. SWT believe that the reintroduction of the Eurasian beaver would (in the long term) be a valuable tool for restoring wetland habitats, reducing management intervention requirements and increasing the robustness of ecosystems in the face of threats such as climate change. 4. SWT believe that the S ...
Integrating ex situ and in situ conservation of lemurs
... chapters of this Lemur Conservation Strategy, should always be the main focus of lemur conservation. However, with many wild lemur populations rapidly declining and their habitat being lost at constantly high rates, captive assurance colonies are becoming increasingly important, and the need for clo ...
... chapters of this Lemur Conservation Strategy, should always be the main focus of lemur conservation. However, with many wild lemur populations rapidly declining and their habitat being lost at constantly high rates, captive assurance colonies are becoming increasingly important, and the need for clo ...
5-1 How Populations Grow
... a population will grow exponentially. Exponential growth occurs when the individuals in a population reproduce at a constant rate. The population becomes larger and larger until it approaches an infinitely large size. Slide 9 of 22 Copyright Pearson Prentice Hall ...
... a population will grow exponentially. Exponential growth occurs when the individuals in a population reproduce at a constant rate. The population becomes larger and larger until it approaches an infinitely large size. Slide 9 of 22 Copyright Pearson Prentice Hall ...