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2 | Species extinction:

1

שאלה #163867

		Is a result of the increased human influence on earth
		Is a natural part of the evolutionary process
		Does not have any effect on biodiversity loss
		Currently, in the 21st century, the rate of species evolution is much higher than the rate of species extinction

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2 | The term 'Mass Extinction':

1

שאלה #163868

		Refers to a mass extinction event of large-bodied species, such as the dinosaurs
		Refers to events associated with much higher “extinction rates” than the background extinction rate
		Refers to extinction events which are a direct result of human actions
		Refers to six geological eras in which new evolving species became extinct

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2 | The current state of biodiversity:

1

שאלה #163869

		The majority of all existing species have been listed in the IUCN Red List as threatened, which means that they face high risk of extinction in the wild
		The IUCN red list is continuously updated according to changes in species status throughout time: for example, the percent of threatened mammal species has decreased considerably in the last decade
		A species is defined as extinct in the wild if no members of the species are found in the species’ breeding sites during the breeding season
		Only a minor portion of all existing species have been evaluated and categorized for their status by the IUCN

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2 | Efficient conservation efforts should:

1

שאלה #163870

		Focus only on ecosystem restoration
		Target a range of spatial scales and different conservation units
		Omit reintroduction projects as these are expensive and risky
		Direct all research efforts to species protection

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2 | The main advantage of reintroduction is that it:

1

שאלה #163871

		Improves the conservation of species and its ecosystem
		Reestablishes the role of top predators in the ecosystem thus restoring the ecosystem functionality
		Attracts public awareness to the importance of returning species that occurred during the Pleistocene.
		All answers are correct

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2 | Usually, small populations:

1

שאלה #163872

		Attract public awareness because of their role in disease transmission to other species
		Have high genetic diversity which can lead to species extinction
		Are prone to extinction because of the combined effect of different factors
		Are spatially connected to other populations

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2 | Which case has the highest probability for a successful reintroduction project?

1

שאלה #163873

		The release site is within the species’ historical range of distribution, where natural habitats are under development pressure
		The released individuals are selected according to their sex and age from a permanent breeding core of the species
		Hunting is forbidden in the site of release but is enabled in its surroundings
		The population in captivity is large and individuals are released directly to the wild to acclimatize to the natural conditions without the need for habituation enclosure

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2 | In which of the following cases should species reintroduction be avoided?

1

שאלה #163874

		The species’ population in captivity is large
		The species is not considered a flagship species
		The species’ natural habitat is patchy and disconnected/isolated
		Hunting is regulated in the species’ natural habitat

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2 | When is a species considered critically endangered by the IUCN?

1

שאלה #163875

		If no members of the species are found in the species’ range of distribution over a period of several years
		If it is spread over a relatively small range (less than 100 square km)
		If it has low genetic diversity
		If its population suffers from a highly transmissible disease

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2 | What is the major aim of Conservation Biology?

1

שאלה #163876

		To bring back the extinct species
		To rewild ecosystems by reintroducing species
		To maintain biodiversity throughout the world
		All answers are correct

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Discuss, Learn and be Happy דיון בשאלות

2 | Species extinction:

2 | The term 'Mass Extinction':

2 | The current state of biodiversity:

2 | Efficient conservation efforts should:

2 | The main advantage of reintroduction is that it:

2 | Usually, small populations:

2 | Which case has the highest probability for a successful reintroduction project?

2 | In which of the following cases should species reintroduction be avoided?

2 | When is a species considered critically endangered by the IUCN?

2 | What is the major aim of Conservation Biology?

בקשה לשינוי התשובה / תיקון שאלה gavel

בקשה למחיקת השאלהmood_bad

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