Terms : Hide Images
| 16280102984 | Ecology | The study of the relationships between organisms and their environment. |  | 0 |
| 16280102985 | Habitat | The place an organism lives. |  | 1 |
| 16280102986 | Biotic factor | A living part of the environment. |  | 2 |
| 16280102987 | Abiotic factor | A non-living part of the environment. |  | 3 |
| 16280102988 | Population | All the organism of one species living in a specific area. |  | 4 |
| 16280102989 | Death rate | The number of deaths in a population in a certain amount of time. |  | 5 |
| 16280102990 | Birth rate | The number of births in a population in a certain amount of time. |  | 6 |
| 16280102991 | Limiting factors | The resources that organisms need to survive. When unavailable these factors limit a populations' ability to grow/increase. Example: resources such as food, water or space become limited |  | 7 |
| 16280102997 | Parasitism | A relationship between two organisms of different species where one benefits and the other is harmed | 8 | |
| 16280103000 | Mutualism | A close relationship between two organisms in which they both benefit/help each other | 9 | |
| 16280103001 | Competition | Organisms will compete with each other for resources such as food, water, living space, shelter, mates. | 10 | |
| 16280103002 | Clumped dispersion | Individuals may live close together in groups in order to facilitate mating, gain protection, or access food resources |  | 11 |
| 16280103003 | Density-dependent factors | factor that limits a population more as population density increases (competition, disease, predation) |  | 12 |
| 16280103004 | Density-independent factors | factor unrelated to population density that limits a population (natural disasters: fire, flood, mudslides) |  | 13 |
| 16280103005 | Emigration | Movement of individuals out of an area |  | 14 |
| 16280103006 | Exponential growth | Population increases by a fixed percentage every year. (J-shaped curve) |  | 15 |
| 16280103007 | Immigration | Moving into a population | | 16 |
| 16280103008 | Limiting factor | An environmental factor (biotic or abiotic) that prevents a population from increasing - determines carrying capacity |  | 17 |
| 16280103009 | Logisitic growth | Growth of a population which may be rapid at first, but then levels off at carrying capacity due to limited resources (S-curve) |  | 18 |
| 16280103010 | Population density | Number of individuals per unit area |  | 19 |
| 16280103011 | Population growth rate | explains how fast a given population grows | | 20 |
| 16280103012 | Random dispersion | Random spacing of individuals of the same species within an area. | | 21 |
| 16280103013 | Uniform dispersion | The pattern in which individuals are equally spaced throughout a habitat. |  | 22 |
| 16280103014 | Zero population growth | when the birth rate equals the death rate |  | 23 |
| 16280103018 | Mark-Recapture | Estimating a species by capturing some, marking them, releasing them and then recapturing in order to find the fraction of marked individuals to the whole. | 24 | |
| 16280103019 | The 5 important characteristics of a population | 1) Geographic distribution 2) Density 3) Dispersion 4) Growth Rate 5) Age Structure | 25 | |
| 16280103021 | Distribution | The spatial distribution of individuals within a population. |  | 26 |
| 16280103022 | 3 Types of Distribution | Clumped, Random, Even (uniform) | 27 | |
| 16280103023 | Reasons for clumped distribution | 1) Resources such as food, water, or living spaces are clumped together. 2) A certain social behavior, such as herding animals, flocks of birds, schools of fish or hives of bees. | 28 | |
| 16280103024 | Reasons for random distribution | Random dispersal may result from seed dispersal by the wind or animals. (Ex. A forest or a field of wildflowers results from the random dispersal of seeds.) | 29 | |
| 16280103026 | Birth Rate | the number of births occurring in a given period of time. | 30 | |
| 16280103027 | Death Rate | the number of deaths in a given period of time. | 31 | |
| 16280103028 | Survivorship curves | These curves show patterns of mortality by showing the likelihood of survival at different ages throughout the lifetime of the organism. | 32 | |
| 16280103029 | Type I survivorship curve | Likelihood of dying increases with age. An example is humans | 33 | |
| 16280103030 | Type II survivorship curve | equal mortality at all ages, example is some bird species | 34 | |
| 16280103031 | Type III survivorship Curve | Death is less likely at an older age, an example is some amphibians | 35 | |
| 16280103033 | How will resources be limited during population growth? | 1) Food will become more and more scarce. 2)There may be water shortages. 3) A predator might be introduced into the population. 4)The population will run out of space. 5) Additional predators may be attracted to the rising prey population. 6) There will be increased competition between the members of the group. 7) The accumulation of wastes could lead to an increase in diseases and poor health. | 36 | |
| 16280103034 | Eventually a growing population will reach this: | The carrying capacity of the environment. | 37 | |
| 16280103035 | Carrying Capacity | The number of individuals the environment can support over a long period of time. |  | 38 |
| 16280103037 | The two types of limiting factors | Density-Dependent Factors and Density-Independent Factors | 39 | |
| 16280103043 | At any given time a population may experience these two things: | Growth or decline | 40 | |
| 16280103044 | Three factors that can greatly increase or decrease the size of a population. | 1. The number of births. 2. The number of deaths. 3. The number of individuals that enter or leave the population (immigration or emigration) | 41 | |
| 16280103045 | Growth Rate | The amount by which a population's size changes in a given time | 42 | |
| 16280103046 | Two processes increase the size of the population: | Increased birth rate and immigration | 43 | |
| 16280103047 | Two processes decrease the size of the population: | Increased death rate and emigration | 44 | |
| 16280103048 | The two types of population growth models | Logistic and Exponential | 45 | |
| 16280103049 | If all factors for reproduction and growth are ideal, the population might grow in this way: | Exponentially | 46 | |
| 16280103050 | This type of growth occurs when the members of the population are reproducing at a constant rate. | Exponential Growth | 47 | |
| 16280103054 | As the population reaches the carrying capacity, the growth rate does this: | Slows | 48 | |
| 16280103055 | Density independent Limiting factor - human activity | Due to humans putting increasing amount of greenhouse gases into the atmosphere and cutting down trees that would normally take up some of those gases, the Earth slowly gets warmer and changes climates around the globe | 49 | |
| 16280662211 | monogamous | One male mating with one female. | 50 | |
| 16280672193 | age structure diagram | a chart that shows the age distribution of a population; can help predict future population growth | 51 | |
| 16280690583 | Species | a group of organisms that are genetically similar | 52 | |
| 16280731113 | biotic potential | An organism's maximum ability to produce offspring in ideal conditions | 53 | |
| 16280752806 | gestation time | the amount of time it takes for an embryo/fetus to develop | 54 | |
| 16280818138 | generation time | the span from an organism's birth to the time it has it's own offspring | 55 |
