Landscape modification and habitat fragmentation: a
... At the other end of the continuum are ‘pattern-oriented’ approaches. Here, the focus is typically on human-perceived landscape patterns and their correlation with measures of species occurrence, including aggregate measures such as species richness. Pattern-oriented approaches originate from island ...
... At the other end of the continuum are ‘pattern-oriented’ approaches. Here, the focus is typically on human-perceived landscape patterns and their correlation with measures of species occurrence, including aggregate measures such as species richness. Pattern-oriented approaches originate from island ...
PRADEEP KUMAR BURMA, Ph.D Designation Associate Professor
... sterile barnase line with the barstar gene as an efficient alternative method to identify male sterile-restorer combinations for heterosis breeding. Plant Cell Reports. 26: 727-733. 16. Arumugam N V Gupta, A Jagannath, A Mukhopadhyay, A K Pradhan, P K Burma and D Pental. 2007. A passage through in v ...
... sterile barnase line with the barstar gene as an efficient alternative method to identify male sterile-restorer combinations for heterosis breeding. Plant Cell Reports. 26: 727-733. 16. Arumugam N V Gupta, A Jagannath, A Mukhopadhyay, A K Pradhan, P K Burma and D Pental. 2007. A passage through in v ...
Why Are There So Many of Us
... resulting from the accumulation of greenhouse gases, but such models do not explain the wide variety of biologic or other geomorphologic phenomena that accompany or result from human activities (Sagan, et al, 1981). The GCM may be explanatory for a few phenomena such as climatologic changes, but not ...
... resulting from the accumulation of greenhouse gases, but such models do not explain the wide variety of biologic or other geomorphologic phenomena that accompany or result from human activities (Sagan, et al, 1981). The GCM may be explanatory for a few phenomena such as climatologic changes, but not ...
Document
... H. A. Gleason, challenged whether communities were at equilibrium • Recent evidence of change has led to a nonequilibrium model, which describes communities as constantly changing after being buffeted by disturbances • A disturbance is an event that changes a community, removes organisms from it, an ...
... H. A. Gleason, challenged whether communities were at equilibrium • Recent evidence of change has led to a nonequilibrium model, which describes communities as constantly changing after being buffeted by disturbances • A disturbance is an event that changes a community, removes organisms from it, an ...
Paiute Plan - Living Assessment
... Recovery Plan includes treatment of Tamarack Lake (in the upper Silver King drainage) to rid it of trout for the benefit of the two amphibian species (USFWS 2004). The many unauthorized transfers both of PCT and the non-native trout that threaten them have been both a scourge and a savior. By 1924, ...
... Recovery Plan includes treatment of Tamarack Lake (in the upper Silver King drainage) to rid it of trout for the benefit of the two amphibian species (USFWS 2004). The many unauthorized transfers both of PCT and the non-native trout that threaten them have been both a scourge and a savior. By 1924, ...
Bioinformatics and Evolutionary Relationships
... In past labs, you learned about changes in gene frequencies in a population over time. This perspective of evolution is called microevolution. In this lab, we will discuss macroevolution, which can be described as the sum of long periods of microevolution. Macroevolution is occurring when one specie ...
... In past labs, you learned about changes in gene frequencies in a population over time. This perspective of evolution is called microevolution. In this lab, we will discuss macroevolution, which can be described as the sum of long periods of microevolution. Macroevolution is occurring when one specie ...
The Common Buzzard - Scottish Natural Heritage
... In recent years, common buzzards have re-colonised most parts of mainland Scotland, with some remaining gaps in distribution, largely in eastern Scotland. The common buzzard is now likely to be the commonest raptor in Scotland. Common buzzards breed on most of the island groups, apart from part of O ...
... In recent years, common buzzards have re-colonised most parts of mainland Scotland, with some remaining gaps in distribution, largely in eastern Scotland. The common buzzard is now likely to be the commonest raptor in Scotland. Common buzzards breed on most of the island groups, apart from part of O ...
Insect Ecology
... •If individuals are too numerous, the population will decrease outbreak •If individuals are too few, the female and male adults cannot find each other (utilized in plant protection quarantine) Many species need a continuous contact with their companions „group effect” e. g.: social insects, migrator ...
... •If individuals are too numerous, the population will decrease outbreak •If individuals are too few, the female and male adults cannot find each other (utilized in plant protection quarantine) Many species need a continuous contact with their companions „group effect” e. g.: social insects, migrator ...
Summary of Working Group Results
... collection and contribution of phenological data to the NPN; To provide instruction in the tools and applications of phenological studies to citizens and to scientists at all stages in their careers; To enhance opportunities for the public to interact with professional scientists; To promote n ...
... collection and contribution of phenological data to the NPN; To provide instruction in the tools and applications of phenological studies to citizens and to scientists at all stages in their careers; To enhance opportunities for the public to interact with professional scientists; To promote n ...
Mean extinction time of populations under toxicant stress and
... qualitatively different factors, e.g., destruction of habitat, overhunting, chemical pollution, etc. Other possible normalizations (e.g., population size, reproductive potential) do not measure ecological risks due to various factors with a common unit. We focus on MET and propose an analytical proc ...
... qualitatively different factors, e.g., destruction of habitat, overhunting, chemical pollution, etc. Other possible normalizations (e.g., population size, reproductive potential) do not measure ecological risks due to various factors with a common unit. We focus on MET and propose an analytical proc ...
Within-population spatial synchrony in mast seeding of North American oaks
... of plant recruitment (Sork et al. 1983, Sork 1993). In many cases, plant seeds play critical roles in food webs and temporal pulses in their numbers may have cascading effects on higher trophic levels (Liebhold et al. 2000, Ostfeld and Keesing 2000, Selås et al. 2001). Population densities of seed ...
... of plant recruitment (Sork et al. 1983, Sork 1993). In many cases, plant seeds play critical roles in food webs and temporal pulses in their numbers may have cascading effects on higher trophic levels (Liebhold et al. 2000, Ostfeld and Keesing 2000, Selås et al. 2001). Population densities of seed ...
How do they get their food?
... • Ok, will select a patch based on food quality that gives good balance when it enters the patch. • But patch becomes depleted as it stays in the patch. • When should it leave??? ...
... • Ok, will select a patch based on food quality that gives good balance when it enters the patch. • But patch becomes depleted as it stays in the patch. • When should it leave??? ...
Population Growth
... In this case we use a capital “R” (net reproductive rate). • Both models have the same shape when plotted as population (N) versus time (t) – i.e. both have an “exponential” (or “geometric”) form. ...
... In this case we use a capital “R” (net reproductive rate). • Both models have the same shape when plotted as population (N) versus time (t) – i.e. both have an “exponential” (or “geometric”) form. ...
assessment
... has responded well to fox control, with many populations in public land where fox control occurs now at greater abundance than previously (Morris et al. 1998). Some subpopulations within fox-proof fences have reached very high densities. The Southern Brown Bandicoot is omnivorous, eating both plants ...
... has responded well to fox control, with many populations in public land where fox control occurs now at greater abundance than previously (Morris et al. 1998). Some subpopulations within fox-proof fences have reached very high densities. The Southern Brown Bandicoot is omnivorous, eating both plants ...
Population Dynamics of Soil and Vegetation Protozoa Newcomb
... Protozoa are the third most abundant, but the least understood, group of organisms in the soil. This paper seeks to elucidate their possible role in soils by tracing their population dynamics, and is based largely on personal studies of several terrestrial biomes. Previously published work from this ...
... Protozoa are the third most abundant, but the least understood, group of organisms in the soil. This paper seeks to elucidate their possible role in soils by tracing their population dynamics, and is based largely on personal studies of several terrestrial biomes. Previously published work from this ...
Niche conservatism as an emerging principle in ecology and
... This approach can then be used to compare rates of change in different traits and clades (e.g. OÕMeara et al. 2006). However, two caveats should be made. First, estimates of trait ÔdisparityÕ (i.e. variance) within clades are not necessarily equivalent to rates of change, particularly if the phyloge ...
... This approach can then be used to compare rates of change in different traits and clades (e.g. OÕMeara et al. 2006). However, two caveats should be made. First, estimates of trait ÔdisparityÕ (i.e. variance) within clades are not necessarily equivalent to rates of change, particularly if the phyloge ...
How do they get their food?
... • Ok, will select a patch based on food quality that gives good balance when it enters the patch. • But patch becomes depleted as it stays in the patch. • When should it leave??? ...
... • Ok, will select a patch based on food quality that gives good balance when it enters the patch. • But patch becomes depleted as it stays in the patch. • When should it leave??? ...
#590 - Frogs, Alligators and Pesticides
... ** Researchers at the University of Windsor in Ontario, Canada, have correlated high levels of organochlorine pesticides with reduced frog populations in several parks and wildlife reserves along the northern edge of Lake Erie.[5] At Point Pelee National Park in Canada, only 5 frog species remain, a ...
... ** Researchers at the University of Windsor in Ontario, Canada, have correlated high levels of organochlorine pesticides with reduced frog populations in several parks and wildlife reserves along the northern edge of Lake Erie.[5] At Point Pelee National Park in Canada, only 5 frog species remain, a ...
Critical Biodiversity
... the behavior of ecosystems is analogous to the behavior of other dynamic systems that evolve to or through a critical state, then a mathematical framework already exists to describe their dynamics. To apply this framework, one must find measures of ecosystems that are analogous to the variables used ...
... the behavior of ecosystems is analogous to the behavior of other dynamic systems that evolve to or through a critical state, then a mathematical framework already exists to describe their dynamics. To apply this framework, one must find measures of ecosystems that are analogous to the variables used ...
Study Guide - Reeths
... A. Name and describe the four main principles of natural selection theory and give examples. Explain how natural selection is nature’s quality control filter and how populations evolve, not individuals. B. Selection pressures are what drive evolution theory. Explain examples of them and how the “rul ...
... A. Name and describe the four main principles of natural selection theory and give examples. Explain how natural selection is nature’s quality control filter and how populations evolve, not individuals. B. Selection pressures are what drive evolution theory. Explain examples of them and how the “rul ...
Growling Grass Frog
... jelly rafts. The tadpole stage lasts 3-15 months and they may grow to 110 mm in total length. The large pinkish grey tadpoles have yellowish fins and hide in aquatic vegetation or move to deeper water if disturbed. They develop the green/gold colouring towards the end of the tadpole stage. ...
... jelly rafts. The tadpole stage lasts 3-15 months and they may grow to 110 mm in total length. The large pinkish grey tadpoles have yellowish fins and hide in aquatic vegetation or move to deeper water if disturbed. They develop the green/gold colouring towards the end of the tadpole stage. ...
The ecology of inland waters
... speaker and the questioner) and only rarely does a real discussion ensue. In this workshop, where a major theme was the direction in which the subject of freshwater ecology is going and is likely to go, and how to take advantage of such predictions in future collaborations, we felt it useful to devo ...
... speaker and the questioner) and only rarely does a real discussion ensue. In this workshop, where a major theme was the direction in which the subject of freshwater ecology is going and is likely to go, and how to take advantage of such predictions in future collaborations, we felt it useful to devo ...
Proposed structure of synthese paper
... Additionally, we can estimate the minimum area size based on cost-benefit analysis in ...
... Additionally, we can estimate the minimum area size based on cost-benefit analysis in ...