Genetic Structure and Speciation in a Lineage
... the primary centers of species diversification of the genus Quercus (Nixon, 1993). It has been postulated that varying physical factors from multiple complex orogonies, the interface of north temperate and subtropical climates and range shifts from glaciation have combined with the propensity for in ...
... the primary centers of species diversification of the genus Quercus (Nixon, 1993). It has been postulated that varying physical factors from multiple complex orogonies, the interface of north temperate and subtropical climates and range shifts from glaciation have combined with the propensity for in ...
Sylvicapra grimmia - Endangered Wildlife Trust
... count data are available, we infer from their wide distribution and high densities that there are well over 10,000 mature individuals with a stable or increasing population trend, albeit with localised declines in some areas from severe hunting pressure. The Common Duiker is one of the few African a ...
... count data are available, we infer from their wide distribution and high densities that there are well over 10,000 mature individuals with a stable or increasing population trend, albeit with localised declines in some areas from severe hunting pressure. The Common Duiker is one of the few African a ...
Module-IV - Notes Milenge
... four individuals. In the second sample area that has the same three species, each species is represented by two individuals. This sample area shows greater evenness, and there are equal chances for a species being represented in a sample. The second sample area will be considered more diverse than t ...
... four individuals. In the second sample area that has the same three species, each species is represented by two individuals. This sample area shows greater evenness, and there are equal chances for a species being represented in a sample. The second sample area will be considered more diverse than t ...
Lecture 17
... development of community to ultimate or climax stage (similar as development of an individual organism) F. Egler (1954):Initial floristic composition succession at any site depends on which species gets there first. No species is competitively superior to another. Once the original dies, the site be ...
... development of community to ultimate or climax stage (similar as development of an individual organism) F. Egler (1954):Initial floristic composition succession at any site depends on which species gets there first. No species is competitively superior to another. Once the original dies, the site be ...
Patterns of Geographical Distribution: Animals
... The animals found on oceanic islands are generally derived from nearby continents. The taxonomic composition of island faunas therefore tends to vary geographically and to reflect the world-wide distribution of different animal groups. However, the ecological characteristics of island faunas tend to ...
... The animals found on oceanic islands are generally derived from nearby continents. The taxonomic composition of island faunas therefore tends to vary geographically and to reflect the world-wide distribution of different animal groups. However, the ecological characteristics of island faunas tend to ...
Are fish introductions a threat to endemic freshwater fishes
... In undisturbed fish populations, competition is rarely observed since it is avoided by character displacements or niche shifts by the species present. When a species is introduced into one of these undisturbed fish populations, the situation is different because the species present have not co-evolv ...
... In undisturbed fish populations, competition is rarely observed since it is avoided by character displacements or niche shifts by the species present. When a species is introduced into one of these undisturbed fish populations, the situation is different because the species present have not co-evolv ...
2303-8457-1-RV
... network and the main responsibility of wildlife managers. We report results of the study which aimed at estimating vegetation change in Saadani National Park. Specifically, we determined abundance in terms of relative density and variation in diversity between old and regenerating tree populations. ...
... network and the main responsibility of wildlife managers. We report results of the study which aimed at estimating vegetation change in Saadani National Park. Specifically, we determined abundance in terms of relative density and variation in diversity between old and regenerating tree populations. ...
Chec List Checklist of large and medium
... (Lontra longicaudis) with indirect evidence. Camera traps recorded one new species to the survey: the Giant Anteater (Myrmecophaga tridactyla) (Figure 2). These results highlight the effectiveness of method complementarities, pointing out the benefits of employing different methods in order to asses ...
... (Lontra longicaudis) with indirect evidence. Camera traps recorded one new species to the survey: the Giant Anteater (Myrmecophaga tridactyla) (Figure 2). These results highlight the effectiveness of method complementarities, pointing out the benefits of employing different methods in order to asses ...
Marine Fossils
... the simplest forms of life occur in the oldest rocks and during successive geological periods the fossil life has become more and more complex. Fossil evidence is used to support the theory of evolution, as it shows changes in the composition of species through time. ...
... the simplest forms of life occur in the oldest rocks and during successive geological periods the fossil life has become more and more complex. Fossil evidence is used to support the theory of evolution, as it shows changes in the composition of species through time. ...
Landscape traits can contribute to range limit equilibrium: habitat
... scenopoetic (i.e. physical and structural) factors, such as topography and land cover, may be very important for the distribution of animal species (Thuiller et al. 2004, Hortal et al. 2010, Brambilla & Gobbi 2014). The effect of these factors may prevent a range from being at equilibrium with clima ...
... scenopoetic (i.e. physical and structural) factors, such as topography and land cover, may be very important for the distribution of animal species (Thuiller et al. 2004, Hortal et al. 2010, Brambilla & Gobbi 2014). The effect of these factors may prevent a range from being at equilibrium with clima ...
Biodiversity Hotspots and Zones of Ecological Transition
... within the core of species’ ranges (nontransition zones) might play a fundamental role in the maintenance of viable populations ( Lawton 1993). Ideally, both core and marginal populations would be represented within hotspots. The greater the span of environmental variation represented, the greater t ...
... within the core of species’ ranges (nontransition zones) might play a fundamental role in the maintenance of viable populations ( Lawton 1993). Ideally, both core and marginal populations would be represented within hotspots. The greater the span of environmental variation represented, the greater t ...
CoA_RES_Prog_2009
... Paxton (Queen’s University Belfast; [email protected]) Population genetics of a rare mining bee, Colletes floralis: implications for the management of a UK BAP species The rare solitary mining bee, Colletes floralis, has an arctic/alpine distribution different from most other European bee species t ...
... Paxton (Queen’s University Belfast; [email protected]) Population genetics of a rare mining bee, Colletes floralis: implications for the management of a UK BAP species The rare solitary mining bee, Colletes floralis, has an arctic/alpine distribution different from most other European bee species t ...
Succession - CST Personal Home Pages
... lions and coyotes. Oaks are prized as timber and for the diversity of wildlife they support, but their numbers are dwindling in the forests of the eastern United States. Their decline is a mystery to rangers and scientists. ...
... lions and coyotes. Oaks are prized as timber and for the diversity of wildlife they support, but their numbers are dwindling in the forests of the eastern United States. Their decline is a mystery to rangers and scientists. ...
Weather - G
... carnivores eliminated by hunting i.e. wolf, mountain lion, bobcat; many birds; frogs and ...
... carnivores eliminated by hunting i.e. wolf, mountain lion, bobcat; many birds; frogs and ...
Trans-Fly Complex - UNESCO World Heritage Centre
... significant - many groups share languages and cultural traditions and many sacred sites and ancestor routes are important to groups on both sides of the border. The biological links to Kakadu are also significant, as a large percentage of the biodiversity is shared between these two sites. However, ...
... significant - many groups share languages and cultural traditions and many sacred sites and ancestor routes are important to groups on both sides of the border. The biological links to Kakadu are also significant, as a large percentage of the biodiversity is shared between these two sites. However, ...
Slide 1
... * Carnivore species to be recorded: tiger, leopard, wild dog, bear, hyaena, wolf, jackal ^ Sign types to be recorded are pugmark (trails), scats (Old: dry with hairs and bones visible; fresh: dry but intact with shiny surface; very fresh: soft moist, and smelly), scraps, scent marks (spray, rolling) ...
... * Carnivore species to be recorded: tiger, leopard, wild dog, bear, hyaena, wolf, jackal ^ Sign types to be recorded are pugmark (trails), scats (Old: dry with hairs and bones visible; fresh: dry but intact with shiny surface; very fresh: soft moist, and smelly), scraps, scent marks (spray, rolling) ...
Intro Ecology and the Biosphere PPT - NMSI
... • As glaciers retreated 16,000 years ago, tree distribution patterns changed • As climate changes, species that have difficulty dispersing may have smaller ranges or could become extinct ...
... • As glaciers retreated 16,000 years ago, tree distribution patterns changed • As climate changes, species that have difficulty dispersing may have smaller ranges or could become extinct ...
Chapt 11: Terrestrial Flora and Fauna
... I. Zoogeographic Regions 1. distribution of animals over the world is more complex and irregular than plants because they are mobile 2. broad distribution of animals is reflective of the distribution of energy and food diversity: a. richest faunal assemblages are in the permissive environment of the ...
... I. Zoogeographic Regions 1. distribution of animals over the world is more complex and irregular than plants because they are mobile 2. broad distribution of animals is reflective of the distribution of energy and food diversity: a. richest faunal assemblages are in the permissive environment of the ...
Chapt 11: Terrestrial Flora and Fauna
... I. Zoogeographic Regions 1. distribution of animals over the world is more complex and irregular than plants because they are mobile 2. broad distribution of animals is reflective of the distribution of energy and food diversity: a. richest faunal assemblages are in the permissive environment of the ...
... I. Zoogeographic Regions 1. distribution of animals over the world is more complex and irregular than plants because they are mobile 2. broad distribution of animals is reflective of the distribution of energy and food diversity: a. richest faunal assemblages are in the permissive environment of the ...
EOL Easy Targets_June201
... via research assistant Amanda Fuerstein) • Habitat keywords: Some Projects have already offered habitat keywords to EOL that will allow specialized search filters to recall only species associated with those hab ...
... via research assistant Amanda Fuerstein) • Habitat keywords: Some Projects have already offered habitat keywords to EOL that will allow specialized search filters to recall only species associated with those hab ...
ppt - Kyle Harms
... A monotonic or saturating curve almost always results from experimental settings examining the influence of diversity on productivity At least two mechanisms can create a positive relationship between diversity and productivity: 1. Complementarity – species use complementary niche space 2. Sampling ...
... A monotonic or saturating curve almost always results from experimental settings examining the influence of diversity on productivity At least two mechanisms can create a positive relationship between diversity and productivity: 1. Complementarity – species use complementary niche space 2. Sampling ...
Chapter 4
... darkness for extended periods eventually function with a freerunning rhythm. Each "day," their sleep cycle is pushed back or forward, depending on whether their endogenous period is shorter or longer than 24 hours. The environmental cues that each day reset the rhythms are called Zeitgebers (from th ...
... darkness for extended periods eventually function with a freerunning rhythm. Each "day," their sleep cycle is pushed back or forward, depending on whether their endogenous period is shorter or longer than 24 hours. The environmental cues that each day reset the rhythms are called Zeitgebers (from th ...
Food Web Complexity and Species Diversity
... course of events. Line transects across both areas have been taken irregularly and the number and density of resident macroinvertebrate and benthic algal species measured. The appearance of the control area has not altered. Adult Mytilus californianus, Balanus cariosus, and Mitella polymerus (a goos ...
... course of events. Line transects across both areas have been taken irregularly and the number and density of resident macroinvertebrate and benthic algal species measured. The appearance of the control area has not altered. Adult Mytilus californianus, Balanus cariosus, and Mitella polymerus (a goos ...
Fauna of Africa
Fauna of Africa, in its broader sense, is all the animals living in Africa and its surrounding seas and islands. The more characteristic African fauna is found in the Afrotropical ecoregion. Lying almost entirely within the tropics, and equally to north and south of the equator creates favourable conditions for rich wildlife.