Several factors contribute to species diversity, including habitat diversity, competition among species, and genetic diversity. Genetic diversity within a species not only is necessary to maintain diversity among species,6 but also contributes to the diversity of food, fiber, and medicines available from nature.
Table of Contents
What are three factors that affect biodiversity?
Principal causes for the loss of variety of life on earth The numerous factors are responsible for the loss of Biodiversity (Figure 1) such as pollution, habitat loss, hunting, introduction of invasive species, overexploitation of preferred species, climate change, and natural disasters.
What are the main components of biological diversity?
Major components in biodiversity are ecosystem diversity, species diversity and genetic diversity.
What are the 3 main objectives of biological conservation?
Biodiversity conservation has three main objectives: To preserve the diversity of species. Sustainable utilization of species and ecosystem. To maintain life-supporting systems and essential ecological processes.
Why is biodiversity important 3 reasons?
Biodiversity provides vital ecosystem functions such as soil fertilization, nutrient recycling, pest and disease regulation, erosion control and crop and tree pollination.
Which of the following factors affect biodiversity the most?
Historically, habitat and land use change have had the biggest impact on biodiversity in all ecosystems, but climate change and pollution are projected to increasingly affect all aspects of biodiversity.
What is the biological diversity?
The term biodiversity (from “biological diversity”) refers to the variety of life on Earth at all its levels, from genes to ecosystems, and can encompass the evolutionary, ecological, and cultural processes that sustain life.
What are the three key factors that influence species richness in an ecosystem?
The factors related to these patterns of small- scale species richness include (1) geographic factors such as scale of observation, available species pool and dispersal patterns, (2) biotic factors such as competition or predation and (3) abiotic environmental factors such as site resource availability, disturbance and …
How does the 3 components of biodiversity differ from each other?
Biodiversity occurs in three different levels: Genetic, Species, and Ecosystem. Genetic diversity refers to the differences within members of a species and their ability to adapt to changes. Species diversity refers to the total number of plant, animal, and insect species that can be found in a particular region.
What are the 3 types of conservation?
- Environmental Conservation. Environmental conservation refers to the environment being used in a way that is sustainable.
- Animal conservation.
- Marine Conservation.
- Human Conservation.
What are the 3 goals and 5 principles of conservation biology?
Conservation biology has three goals: (a) to document Earth’s biological diversity; (b) to investigate how humans influence species, evolution, and ecosystem processes; and (c) to investigate approaches to protect and restore biological communities, maintain genetic diversity, and prevent the extinction of species.
What are examples of biodiversity?
Most people recognize biodiversity by species—a group of individual living organisms that can interbreed. Examples of species include blue whales, white-tailed deer, white pine trees, sunflowers, and microscopic bacteria that can’t even be seen by the naked eye.
What are the several concepts that the society or human beings benefit from biodiversity?
Biodiversity supports human and societal needs, including food and nutrition security, energy, development of medicines and pharmaceuticals and freshwater, which together underpin good health. It also supports economic opportunities, and leisure activities that contribute to overall wellbeing.
What are the values of biodiversity?
- Environmental values.
- Social values.
- Ecosystem services.
- Economic values.
- Value of consumptive use.
- Value of productive use.
- Moral and ethical values.
- Aesthetic values.
What are the 4 levels of biodiversity?
- Species Diversity. Every ecosystem contains a unique collection of species, all interacting with each other.
- Genetic Diversity. Genetic diversity describes how closely related the members of one species are in a given ecosystem.
- Ecosystem Diversity.
- Functional Diversity.
What are the four major factors that affect species richness?
Such factors include climatic variability, the input of energy, the productivity of the environment, and possibly the ‘age’ of the environment and the ‘harshness’ of the environment.
What affects the distribution of biodiversity on Earth?
Biodiversity is unevenly distributed across the planet. A range of factors contribute to this distribution, including the global climatic gradient, the current and historical distribution of land masses, and geographical barriers, such as mountains.
What factors affect plant diversity?
Some studies showed that abiotic factors, such as climate, topography, and soil, are important factors affecting the species composition and plant diversity of alpine vegetation (Vonlanthen et al., 2006a; Vonlanthen et al., 2006b; Wang et al., 2008), with varying impact.
How many types of conservation of biodiversity are there?
Ans: There are two types of biodiversity conservation In-situ conservation and Ex-situ conservation.
What are the four main strategies in biodiversity conservation?
- restoring habitats and system dynamics.
- identifying and protecting climate refugia.
- managing/restoring connectivity.
- increasing matrix permeability and functional connectivity.
Which of the following are components of biodiversity select all that apply?
Ecological, organismic, genetic and cultural diversity.
What are the five ethical principles of conservation biology?
One of the founders of conservation science, Michael Soulé (1985) described five guiding principles for the field: (1) diversity should be preserved, (2) untimely extinctions should be prevented, (3) ecological complexity should be maintained, (4) evolutionary processes should continue, and (5) biological diversity has …
What are the causes and effects of biodiversity loss?
Biodiversity loss is caused by five primary drivers: habitat loss, invasive species, overexploitation (extreme hunting and fishing pressure), pollution, climate change associated with global warming. In each case, human beings and their activities play direct roles.
How human activities affect biodiversity?
The main direct cause of biodiversity loss is land use change (primarily for large-scale food production) which drives an estimated 30% of biodiversity decline globally. Second is overexploitation (overfishing, overhunting and overharvesting) for things like food, medicines and timber which drives around 20%.
What is biodiversity write any three benefits of biodiversity?
Ecological life support— biodiversity provides functioning ecosystems that supply oxygen, clean air and water, pollination of plants, pest control, wastewater treatment and many ecosystem services. Recreation—many recreational pursuits rely on our unique biodiversity , such as birdwatching, hiking, camping and fishing.