Vegetation dynamics and community assembly in post
... dataset, the ecological relevance of this wonderful area became clear. The more I familiarized with the history of Nørholm, the more interesting ecological questions and patterns arose which ultimately led me to dedicate my PhD study solely to this site. Coming from Guatemala, most of my experience ...
... dataset, the ecological relevance of this wonderful area became clear. The more I familiarized with the history of Nørholm, the more interesting ecological questions and patterns arose which ultimately led me to dedicate my PhD study solely to this site. Coming from Guatemala, most of my experience ...
Chapter 6: Dimension 3: Disciplinary Core Ideas—Life Sciences
... mechanisms of inheritance and variability are key to understanding both the unity and the diversity of life on Earth. The committee developed four core ideas reflecting unifying principles in life sciences. These core ideas are essential for a conceptual understanding of the life sciences and will e ...
... mechanisms of inheritance and variability are key to understanding both the unity and the diversity of life on Earth. The committee developed four core ideas reflecting unifying principles in life sciences. These core ideas are essential for a conceptual understanding of the life sciences and will e ...
The Amazon River as a dispersal barrier to passerine birds: effects
... A plethora of hypotheses have been postulated to explain the extraordinary diversification of birds in the tropical forests of South America, which host the most diverse bird faunas in the world (e.g. see recent reviews by Haffer, 1997a; Nores, 2000). The extent to which of these hypotheses best acc ...
... A plethora of hypotheses have been postulated to explain the extraordinary diversification of birds in the tropical forests of South America, which host the most diverse bird faunas in the world (e.g. see recent reviews by Haffer, 1997a; Nores, 2000). The extent to which of these hypotheses best acc ...
CONCEPTUAL SYNTHESIS IN COMMUNITY ECOLOGY
... recognition that the composition and diversity of species, even at a local scale, depend fundamentally on the composition and diversity of the regional pool of species, which, in turn, depend on the process of speciation. Just as mutation is the ultimate source of genetic variation, so too is specia ...
... recognition that the composition and diversity of species, even at a local scale, depend fundamentally on the composition and diversity of the regional pool of species, which, in turn, depend on the process of speciation. Just as mutation is the ultimate source of genetic variation, so too is specia ...
8 Habitat matrix effects on the structure and dynamic
... The metacommunity perspective differs from metapopulation perspectives, in that the principal issue in metapopulation theory is to address what determines the persistence of a metapopulation in a system of connected habitats, whereas metacommunity studies address what regulates the coexistence of mu ...
... The metacommunity perspective differs from metapopulation perspectives, in that the principal issue in metapopulation theory is to address what determines the persistence of a metapopulation in a system of connected habitats, whereas metacommunity studies address what regulates the coexistence of mu ...
Evolution, Biodiversity, and Population Ecology
... • Biological evolution = genetic change in populations of organisms across generations • May be random or directed by natural selection - Natural Selection = the process by which traits that enhance survival and reproduction are passed on more frequently to future generations than those that do not ...
... • Biological evolution = genetic change in populations of organisms across generations • May be random or directed by natural selection - Natural Selection = the process by which traits that enhance survival and reproduction are passed on more frequently to future generations than those that do not ...
Ecosystems and the Biosphere as Complex Adaptive Systems
... coevolution of earth's biotic and abiotic parts. But such a view does not rest comfortablywith population biologists, because it seems to be based on group selective principles operating at levels far above those of the primaryunits of selection (Ehrlich 1991). The recognition of the biosphere and o ...
... coevolution of earth's biotic and abiotic parts. But such a view does not rest comfortablywith population biologists, because it seems to be based on group selective principles operating at levels far above those of the primaryunits of selection (Ehrlich 1991). The recognition of the biosphere and o ...
An Index of Diversity and the Relation of Certain Concepts to Diversity
... King (1964) notes that MacArthur's model is applicable only in a homogeneously diverse area. However, there is no indication that any test of homogeneity has been applied in the various papers cited above other than the fit to MacArthur's model. Although animal ecologists have studied the distributi ...
... King (1964) notes that MacArthur's model is applicable only in a homogeneously diverse area. However, there is no indication that any test of homogeneity has been applied in the various papers cited above other than the fit to MacArthur's model. Although animal ecologists have studied the distributi ...
biogeographical region
... • “Uniqueness” criterion - containing the only significant example of a non priority habitat or species • “High-quality” criterion - having a high national value for at least one nonpriority habitat or species • “High-diversity” criterion - containing a significant number of non-priority habitats an ...
... • “Uniqueness” criterion - containing the only significant example of a non priority habitat or species • “High-quality” criterion - having a high national value for at least one nonpriority habitat or species • “High-diversity” criterion - containing a significant number of non-priority habitats an ...
Environmental adaptation to lagoon systems
... boundary (5-8 %cl separates fresh water and marine fauna s and Khlebovich (1969) later expanded this concept by incorporating much more data. Pronounccd physiotogical changes occur within this critieal salinity boundary region, including distortion of cellular electrochemical properties, tissue albu ...
... boundary (5-8 %cl separates fresh water and marine fauna s and Khlebovich (1969) later expanded this concept by incorporating much more data. Pronounccd physiotogical changes occur within this critieal salinity boundary region, including distortion of cellular electrochemical properties, tissue albu ...
... temperature increases on the populations, communities, and associated ecosystem services of assemblages of ground-foraging ants. Ants are a model taxon for studying effects of global climatic change because they comprise the dominant fraction of animal biomass in many terrestrial communities and bec ...
Mr. Babak - Marion County Public Schools
... ** The climax community of a region is always its dominant plant species. ** - Altered ecosystems may reach a point of stability that can last for hundreds or thousands of years. A climax community persists until a catastrophic change of a major biotic or abiotic nature alters or destroys it. (Ex. f ...
... ** The climax community of a region is always its dominant plant species. ** - Altered ecosystems may reach a point of stability that can last for hundreds or thousands of years. A climax community persists until a catastrophic change of a major biotic or abiotic nature alters or destroys it. (Ex. f ...
Common Questions, Helpful Answers
... Humans are dependent on biodiversity which provides food, medicines and raw materials, and delivers many other goods and services that support human life. For example, forests provide wood, oxygenate the air, purify water, prevent erosion and flooding, help regulate our climate and turn waste into n ...
... Humans are dependent on biodiversity which provides food, medicines and raw materials, and delivers many other goods and services that support human life. For example, forests provide wood, oxygenate the air, purify water, prevent erosion and flooding, help regulate our climate and turn waste into n ...
This article discusses the various hypotheses proposed to explain
... found that 5 to 8 years after the clear-cut, the species richness was increased by 30 to 35%. Haeussler pointed out that this increase in diversity came at a price: the clear-cut disturbance stripped the land of important soil organic layers causing a shift in the type of plants colonizing the regio ...
... found that 5 to 8 years after the clear-cut, the species richness was increased by 30 to 35%. Haeussler pointed out that this increase in diversity came at a price: the clear-cut disturbance stripped the land of important soil organic layers causing a shift in the type of plants colonizing the regio ...
Ecosystems
... Communities could include urban examples such as squirrels, bird populations, trees and other plants. 3. An ecosystem is an area whose communities are determined by the environmental conditions (abiotic factors) of the area. Example: Forests of Michigan thrive with certain soil conditions and amount ...
... Communities could include urban examples such as squirrels, bird populations, trees and other plants. 3. An ecosystem is an area whose communities are determined by the environmental conditions (abiotic factors) of the area. Example: Forests of Michigan thrive with certain soil conditions and amount ...
Document
... IV.8 Depending on the level at which it operates, selection can be divided into individual, group, kin, interspecific or intercommunity selection. IV.8.1 An individual is the object and the basic unit of selection. IV.8.2 Group selection involves competing populations. IV.8.2.1 Pseudoaltruistic beha ...
... IV.8 Depending on the level at which it operates, selection can be divided into individual, group, kin, interspecific or intercommunity selection. IV.8.1 An individual is the object and the basic unit of selection. IV.8.2 Group selection involves competing populations. IV.8.2.1 Pseudoaltruistic beha ...
B1 Revision Checklist
... Explain why drugs need to be tested before they can be prescribed. Describe the uses and problems associated with thalidomide. Explain how the drug testing procedure for thalidomide was inappropriate. Describe the main steps in testing a new drug. Explain the terms placebo and double-blind t ...
... Explain why drugs need to be tested before they can be prescribed. Describe the uses and problems associated with thalidomide. Explain how the drug testing procedure for thalidomide was inappropriate. Describe the main steps in testing a new drug. Explain the terms placebo and double-blind t ...
bYTEBoss Conservation Ecology PPT
... threat to biodiversity throughout the biosphere • In almost all cases, habitat fragmentation and destruction lead to loss of biodiversity • For example – In Wisconsin, prairie occupies <0.1% of its original area – About 93% of coral reefs have been damaged by human activities Copyright © 2008 Pearso ...
... threat to biodiversity throughout the biosphere • In almost all cases, habitat fragmentation and destruction lead to loss of biodiversity • For example – In Wisconsin, prairie occupies <0.1% of its original area – About 93% of coral reefs have been damaged by human activities Copyright © 2008 Pearso ...
The role of abiotic and biotic factors in determining coexistence of
... pollinator species that deposit eggs next to plant ovules, would not only compete for access to oviposition sites, but also have to contend with increased egg/larval mortality as a consequence of the plant’s response to damage. Competition between pollinator species that lay eggs next to plant ovule ...
... pollinator species that deposit eggs next to plant ovules, would not only compete for access to oviposition sites, but also have to contend with increased egg/larval mortality as a consequence of the plant’s response to damage. Competition between pollinator species that lay eggs next to plant ovule ...
Summary of Working Group Results
... The field of phenology has a long history, with roots in natural history and agriculture, and at least one data set that extends for almost a millennium. However, widespread systematic observations and research in the field are relatively recent phenomena, and many unexplored questions exist that of ...
... The field of phenology has a long history, with roots in natural history and agriculture, and at least one data set that extends for almost a millennium. However, widespread systematic observations and research in the field are relatively recent phenomena, and many unexplored questions exist that of ...
351 - Biologylocker
... so they are protected from predators while they are in there. The sea anemones do not care if the fish are there or not, but the fish get protection. Question 4: What is the difference between Mutualism and Commensalism? ...
... so they are protected from predators while they are in there. The sea anemones do not care if the fish are there or not, but the fish get protection. Question 4: What is the difference between Mutualism and Commensalism? ...
pdf
... Chapter 5 Environmentally determined spatial patterns of annual plants in early salt-marsh succession versus stochastic distribution in old salt-marsh conditions 4 Erfanzadeh R., Pétillon J., Maelfait J.-P. & Hoffmann M. ...
... Chapter 5 Environmentally determined spatial patterns of annual plants in early salt-marsh succession versus stochastic distribution in old salt-marsh conditions 4 Erfanzadeh R., Pétillon J., Maelfait J.-P. & Hoffmann M. ...
Comparison of ant communities (Hymenoptera: Formicidae) in
... Abstract. We examined for the first time the effects of livestock grazing on ant species richness, structure of ant communities and nesting density in three different habitat types and natural and grazed conditions in the Bogdkhan Mountains region, North-Central Mongolia. Twenty one species of ants ...
... Abstract. We examined for the first time the effects of livestock grazing on ant species richness, structure of ant communities and nesting density in three different habitat types and natural and grazed conditions in the Bogdkhan Mountains region, North-Central Mongolia. Twenty one species of ants ...
David Brown - Montana State University
... Study of the basic and applied aspects of higher fungi, particularly in extreme environments such as the alpine life zone and high-elevation smelter-impacted sites ...
... Study of the basic and applied aspects of higher fungi, particularly in extreme environments such as the alpine life zone and high-elevation smelter-impacted sites ...
Biogeography
Biogeography is the study of the distribution of species and ecosystems in geographic space and through geological time. Organisms and biological communities often vary in a regular fashion along geographic gradients of latitude, elevation, isolation and habitat area. Phytogeography is the branch of biogeography that studies the distribution of plants. Zoogeography is the branch that studies distribution of animals.Knowledge of spatial variation in the numbers and types of organisms is as vital to us today as it was to our early human ancestors, as we adapt to heterogeneous but geographically predictable environments. Biogeography is an integrative field of inquiry that unites concepts and information from ecology, evolutionary biology, geology, and physical geography.Modern biogeographic research combines information and ideas from many fields, from the physiological and ecological constraints on organismal dispersal to geological and climatological phenomena operating at global spatial scales and evolutionary time frames.The short-term interactions within a habitat and species of organisms describe the ecological application of biogeography. Historical biogeography describes the long-term, evolutionary periods of time for broader classifications of organisms. Early scientists, beginning with Carl Linnaeus, contributed theories to the contributions of the development of biogeography as a science. Beginning in the mid-18th century, Europeans explored the world and discovered the biodiversity of life. Linnaeus initiated the ways to classify organisms through his exploration of undiscovered territories.The scientific theory of biogeography grows out of the work of Alexander von Humboldt (1769–1859), Hewett Cottrell Watson (1804–1881), Alphonse de Candolle (1806–1893), Alfred Russel Wallace (1823–1913), Philip Lutley Sclater (1829–1913) and other biologists and explorers.