Individuals (week 4)
... • Low densities of life and biodiversity • Dry / daily temperature fluctuations • Conserve water and control temperature • Xerophytes • Seeds at dry periods • Allelopathy • Animals – small & active at night ...
... • Low densities of life and biodiversity • Dry / daily temperature fluctuations • Conserve water and control temperature • Xerophytes • Seeds at dry periods • Allelopathy • Animals – small & active at night ...
Predation, seed size partitioning and the evolution of
... depth, have relatively large bodies compared to other carduelines (Fig. 1; see also Benkman, 1988a). There is also a fair amount of scatter among the small-billed carduelines, representing five species of Carduelis. Whether this variation is related to vulnerability to predators is not clear. Body m ...
... depth, have relatively large bodies compared to other carduelines (Fig. 1; see also Benkman, 1988a). There is also a fair amount of scatter among the small-billed carduelines, representing five species of Carduelis. Whether this variation is related to vulnerability to predators is not clear. Body m ...
Mechanisms of Growth Regulation
... It's easy to get lost in the discussion of dinosaurs and theories about why they went extinct 65 million years ago. Was it due to a meteor slamming into Earth near the coast of modern-day Mexico, or was it from some long-term weather cycle that is not yet understood? One hypothesis that will never b ...
... It's easy to get lost in the discussion of dinosaurs and theories about why they went extinct 65 million years ago. Was it due to a meteor slamming into Earth near the coast of modern-day Mexico, or was it from some long-term weather cycle that is not yet understood? One hypothesis that will never b ...
AP Biology
... difference between the per capita birth rate and the per capita death rate. This difference is the per capita rate of increase, or r: r = b-d (Rate of increase = birth rate – death rate) Zero Population Growth occurs when the per capita birth rate and death rate are equal. Births and deaths stil ...
... difference between the per capita birth rate and the per capita death rate. This difference is the per capita rate of increase, or r: r = b-d (Rate of increase = birth rate – death rate) Zero Population Growth occurs when the per capita birth rate and death rate are equal. Births and deaths stil ...
Notes - Bruce Owen
... the changing position of the continents and the oceans between them was important to primate evolution in two ways it played a big role in forming the very different climates of the past, from tropical forest conditions that covered most of the globe, to the ice ages it isolated some populations of ...
... the changing position of the continents and the oceans between them was important to primate evolution in two ways it played a big role in forming the very different climates of the past, from tropical forest conditions that covered most of the globe, to the ice ages it isolated some populations of ...
Biome DQ - Biloxi Public Schools
... 5. A single species of squirrel evolved over time into two species, each on opposite sides of the Grand Canyon. This change was most likely due to --A higher mutation rates on one side. B low genetic diversity in the initial population. C the isolation of the two groups. D differences in reproductiv ...
... 5. A single species of squirrel evolved over time into two species, each on opposite sides of the Grand Canyon. This change was most likely due to --A higher mutation rates on one side. B low genetic diversity in the initial population. C the isolation of the two groups. D differences in reproductiv ...
Biome DQ - Biloxi Public Schools
... 1. A single species of squirrel evolved over time into two species, each on opposite sides of the Grand Canyon. This change was most likely due to --A higher mutation rates on one side. B low genetic diversity in the initial population. C the isolation of the two groups. D differences in reproductiv ...
... 1. A single species of squirrel evolved over time into two species, each on opposite sides of the Grand Canyon. This change was most likely due to --A higher mutation rates on one side. B low genetic diversity in the initial population. C the isolation of the two groups. D differences in reproductiv ...
Environments Through Time - NagleEarthandEnvironmental
... -primitive spiders and scorpions predated other animals. Gills were modified into lungs or spiracles -Insects during Carboniferous including giant dragonflies. The increase in oxygen allowed animals to grow larger First land Vertebrates: -Rhipidistriams probably chased their prey into shallow water ...
... -primitive spiders and scorpions predated other animals. Gills were modified into lungs or spiracles -Insects during Carboniferous including giant dragonflies. The increase in oxygen allowed animals to grow larger First land Vertebrates: -Rhipidistriams probably chased their prey into shallow water ...
Chapter 9 Primate Origins and Evolution Overview • Following the
... • Whether they first appeared in Africa or Asia is a hot debate. • They may have evolved from a third line (not lemur-loris group and not the tarsier group). • Old world anthropoids • They date back to the Oligocene epoch (34-23 million years ago). • Fossils show continued radiation in both he Old W ...
... • Whether they first appeared in Africa or Asia is a hot debate. • They may have evolved from a third line (not lemur-loris group and not the tarsier group). • Old world anthropoids • They date back to the Oligocene epoch (34-23 million years ago). • Fossils show continued radiation in both he Old W ...
Basal Metabolic Rate
... BMR of Endotherms and Ectotherms It has been known for about a century and a half that the metabolic rate of endotherms is many times that of ectotherms. In an attempt to understand the basis of this difference, more than 20 years ago we began a series of experiments involving mammals and reptiles o ...
... BMR of Endotherms and Ectotherms It has been known for about a century and a half that the metabolic rate of endotherms is many times that of ectotherms. In an attempt to understand the basis of this difference, more than 20 years ago we began a series of experiments involving mammals and reptiles o ...
Food Webs
... Then, we discovered how organisms change (evolve) over long periods time. Now, we will study how groups of these organisms interact and change the environment around us. We will also look at how our treatment of the environment threatens the survival of the human species. ...
... Then, we discovered how organisms change (evolve) over long periods time. Now, we will study how groups of these organisms interact and change the environment around us. We will also look at how our treatment of the environment threatens the survival of the human species. ...
Evolution of body-size
... Cope's rule is the tendency of lineages to increase in size over macroevolutionary time. While the rule has been demonstrated in many instances, it does not hold true at all taxonomic levels, or in all clades. Cope's rule necessitates that a directional selection favoring a larger size constantly op ...
... Cope's rule is the tendency of lineages to increase in size over macroevolutionary time. While the rule has been demonstrated in many instances, it does not hold true at all taxonomic levels, or in all clades. Cope's rule necessitates that a directional selection favoring a larger size constantly op ...
Patterns of Evolution
... Sometimes organisms that are closely connected to one another by ecological interactions evolve together. The process by which two species evolve in response to changes in each other over time is called coevolution. ...
... Sometimes organisms that are closely connected to one another by ecological interactions evolve together. The process by which two species evolve in response to changes in each other over time is called coevolution. ...
PDF - Science Matters
... Teacher Note: If using the life size poster, have students put the paper down, lie on top of it, and have the other student trace around their body. To help students organize the task and follow which system is which, suggest coloring all organs in one system one color 5.E Formative Assessment #4 ...
... Teacher Note: If using the life size poster, have students put the paper down, lie on top of it, and have the other student trace around their body. To help students organize the task and follow which system is which, suggest coloring all organs in one system one color 5.E Formative Assessment #4 ...
國立臺南大學 生態科學與技術學系 生態學期末考題 (A 卷)
... (A) The male most closely related to the original female (B) The smallest male (C) The decision is based upon a series of fights A| 5 (D) The breeding male (E) None of the above; male clownfish do not change sex. 23. Which of the following statements about the r-K continuum is true? (A) Most species ...
... (A) The male most closely related to the original female (B) The smallest male (C) The decision is based upon a series of fights A| 5 (D) The breeding male (E) None of the above; male clownfish do not change sex. 23. Which of the following statements about the r-K continuum is true? (A) Most species ...
Food Webs - JhaveriChemBioWiki
... Then, we discovered how organisms change (evolve) over long periods time. Now, we will study how groups of these organisms interact and change the environment around us. We will also look at how our treatment of the environment threatens the survival of the human species. ...
... Then, we discovered how organisms change (evolve) over long periods time. Now, we will study how groups of these organisms interact and change the environment around us. We will also look at how our treatment of the environment threatens the survival of the human species. ...
Chapter 26 Notes
... Removing or introduction of a predator can _____________ an entire community http://chil.vcoe.org/eagle_cam.htm (know the Island Fox story) ...
... Removing or introduction of a predator can _____________ an entire community http://chil.vcoe.org/eagle_cam.htm (know the Island Fox story) ...
Causes of Mass Extinctions - With Special Reference to Vanishing
... extinction. Matthew (2009) argued that volcanic weathering led to draw down pCO2 and resulted in a cooling episode, which produced the well known End-Ordovician (Hirnantian) glaciation. It is remarkable that both rapid warming and glaciation might be occurred during the Permian; as stated by several ...
... extinction. Matthew (2009) argued that volcanic weathering led to draw down pCO2 and resulted in a cooling episode, which produced the well known End-Ordovician (Hirnantian) glaciation. It is remarkable that both rapid warming and glaciation might be occurred during the Permian; as stated by several ...
Among-population differences in the frequency of intraspecific
... of larvae (Morin, 1983), and enables density-dependent benefits assuming the ability to discriminate between kin and non-kin (Scott, 1994; Gabor, 1996). In some species, tadpoles grow larger when cannibalizing conspecific compared to heterospecific eggs, although it is not known what benefits the fo ...
... of larvae (Morin, 1983), and enables density-dependent benefits assuming the ability to discriminate between kin and non-kin (Scott, 1994; Gabor, 1996). In some species, tadpoles grow larger when cannibalizing conspecific compared to heterospecific eggs, although it is not known what benefits the fo ...
Ecosystem Change
... Pressures are density-dependent: as population increases, food and living ...
... Pressures are density-dependent: as population increases, food and living ...
Demography and Populations Survivorship
... Fig. 2 Growth and nest predation on three continents.(A) Peak growth rate is faster in species with higher nest predation risk but is slower in tropical species with the same level of risk as temperate species, while controlling for mass (table S1A). Growth rate is the conventional peak rate of gro ...
... Fig. 2 Growth and nest predation on three continents.(A) Peak growth rate is faster in species with higher nest predation risk but is slower in tropical species with the same level of risk as temperate species, while controlling for mass (table S1A). Growth rate is the conventional peak rate of gro ...
ECOLOGY: The relationship between organisms and their
... In more stable environments where K is reached and maintained, a species would be selected to maximize fitness by being more competitive and efficient in its environment, since resources are limited. We call these K-selected species. ...
... In more stable environments where K is reached and maintained, a species would be selected to maximize fitness by being more competitive and efficient in its environment, since resources are limited. We call these K-selected species. ...
Megafauna
In terrestrial zoology, megafauna (Ancient Greek megas ""large"" + New Latin fauna ""animal"") are large or giant animals. The most common thresholds used are 45 kilograms (100 lb) or 100 kilograms (220 lb). This thus includes many species not popularly thought of as overly large, such as white-tailed deer, red kangaroo, and humans.In practice, the most common usage encountered in academic and popular writing describes land animals roughly larger than a human that are not (solely) domesticated. The term is especially associated with the Pleistocene megafauna – the land animals often larger than modern counterparts considered archetypical of the last ice age, such as mammoths, the majority of which in northern Eurasia, the Americas and Australia became extinct as recently as 10,000–40,000 years ago. It is also commonly used for the largest extant wild land animals, especially elephants, giraffes, hippopotamuses, rhinoceroses, and large bovines. Megafauna may be subcategorized by their trophic position into megaherbivores (e.g., elk), megacarnivores (e.g., lions), and, more rarely, megaomnivores (e.g., bears).Other common uses are for giant aquatic species, especially whales, any larger wild or domesticated land animals such as larger antelope and cattle, as well as numerous dinosaurs and other extinct giant reptilians.The term is also sometimes applied to animals (usually extinct) of great size relative to a more common or surviving type of the animal, for example the 1 m (3 ft) dragonflies of the Carboniferous period.