Which is an example of habitat fragmentation? … Which best describes an effect of habitat fragmentation? decreased biodiversity. A wooded area has been divided by a housing development and is threatening the biodiversity of the area.
What does habitat fragmentation cause?
Fragmentation limits wildlife mobility. Individuals struggle to move between habitat patches, which can lead to inbreeding and a loss of genetic diversity. This reduces the long-term health of a population, making it more vulnerable to disease and at greater risk of extinction.
Which is an example of habitat fragmentation quizlet?
Natural Fragmentation (fires, forest insect, disease outbreaks, wind storms, avalanches, soil, slope, elevational differences, etc. small area of human use dispersed over a landscape.
What do many scientists consider the number one cause of extinction?
Evidence shows that a sixth mass extinction is occurring. The single biggest cause is habitat loss caused by human actions. There are many steps you can take to help protect biodiversity. For example, you can use less energy.
What does the pyramid of biological magnification shown below illustrate?
What does the pyramid of biological magnification illustrate? Higher trophic carnivores eat very little food. Toxic substances increase as trophic levels increase in a food chain.
How does habitat fragmentation affect plants?
1996; Sork et al. 1999; Frankham et al. 2010). These findings suggest that habitat fragmentation often disrupts gene flow and increases random genetic drift and inbreeding, which erodes genetic diversity of plant progeny reducing its viability and vigour, regardless of plant species characteristics.
What species are affected by habitat fragmentation?
Orangutans, tigers, elephants, rhinos, and many other species are increasingly isolated and their sources of food and shelter are in decline. Human-wildlife conflict also increases because without sufficient natural habitat these species come into contact with humans and are often killed or captured.
What is the impact of habitat fragmentation quizlet?
altered environmental and biological conditions at the edges of a fragmented habitat. destroys important food sources and contaminates drinking water with chemicals that can cause immediate and long-term harm to health of people and other species that contact the polluted water.
How does Habitat fragmentation affect a population quizlet?
Reduced population numbers which leads to reduced biodiversity. … They can alter biodiversity. Invasive species tend to like community edges since they are usually disturbed areas.
What is meant by fragmentation of habitat?
Habitat fragmentation is defined as the process during which a large expanse of habitat is transformed into a number of smaller patches of smaller total area isolated from each other by a matrix of habitats unlike the original (Fahrig, 2003).
What is the effect of the extinction of a species on the environment?
What are the consequences of extinction? If a species has a unique function in its ecosystem, its loss can prompt cascading effects through the food chain (a “trophic cascade”), impacting other species and the ecosystem itself.
Which contributes to loss of habitat?
There are many causes of habitat loss, including land conversion for development from growing populations, mining for materials, harvesting lumber for paper products and, of course, agriculture.
What is habitat destruction?
Habitat destruction, defined as the elimination or alteration of the conditions necessary for animals and plants to survive, not only impacts individual species but the health of the global ecosystem. Habitat loss is primarily, though not always, human-caused.
What best describes the process of biological magnification?
Biological magnification, or biomagnification, is the increasing buildup of toxic substances within organisms that happens at each stage of the food chain. … At each stage of the food chain, the toxic buildup increases. The buildup of toxic substances within a single organism is called biological accumulation.
Which of the following describes biological magnification quizlet?
Which of the following describes the process of biomagnification? It is the increase in toxicant concentration as it moves up to the top trophic levels in the food chain.
What does biomagnification mean in science?
Biomagnification is the accumulation of a chemical by an organism from water and food exposure that results in a concentration that is greater than would have resulted from water exposure only and thus greater than expected from equilibrium. From: Treatise on Geochemistry, 2007.