What would the population size of sika deer be one year after the carrying capacity increased to 70,000 as a result of deforestation? Assume rmax does not change. A – The population would grow to 70,000 deer in a year, because they would occupy the entire environmental niche.
Which of the following most accurately explains an impact of Burmese pythons on the Everglades?
Which of the following most accurately explains an impact of Burmese pythons on the Everglades community in southern Florida using the data provided? Python predation has caused a trophic cascade that changed the mosquitoes’ niche.
Which of the following best predicts the results of a drought in the savanna research area with regards to community resilience to this environmental change? The lightly grazed area is likely to recover more quickly from the drought due to greater biodiversity.
How do you detect a drought?
Drought monitoring involves observing indicators and indices that evaluate changes in a region’s hydrological cycle. Indicators, which are used to describe drought conditions, are variables such as precipitation, temperature, streamflow, ground and reservoir water levels, soil moisture, and snowpack.
What would the population size of sika deer? – Related Questions
What is the biggest threat to savannas?
Around the world, savannas are threatened by human actions like logging, development, conversion to agriculture, over-grazing by livestock, and introduction of non-native plant species.
Do savannahs need fire to survive?
Essential to the Savanna
Some fires are started to stimulate new growth of nutritious grass for their animals, others are used to control the numbers of parasitic ticks or manage the growth of thorny scrub. Without fires, many Savannas – and the animals they support – wouldn’t exist.
What biome is savanna?
A savanna is a rolling grassland scattered with shrubs and isolated trees, which can be found between a tropical rainforest and desert biome. Not enough rain falls on a savanna to support forests. Savannas are also known as tropical grasslands.
Can you survive in the savanna?
Survival in the African savanna requires basic knowledge of the environment, weather, and wildlife. Lack of water and heat are likely to be your biggest threats to overcome. Locate safe water, find some food to snack on and understand the wildlife dangers, and you will survive!
Which of the following best predicts the results of a drought in the savanna research?
Which of the following best predicts the results of a drought in the savanna research area with regards to community resilience to this environmental change? The lightly grazed area is likely to recover more quickly from the drought due to greater biodiversity.
What would happen if there was a drought in the savanna?
Droughts can therefore differentially favour survival and establishment of fast-growing savanna trees, potentially leading to longer-term compositional shifts in adult tree communities.
How does drought affect the savanna?
We suggest that increasing drought frequency and severity could drastically alter savanna vegetation by repeatedly killing off trees. Keywords: climate change; disturbance; drought; savanna; tree dynamics; vegetation change.
What would happen to the savanna ecosystem of a drought occurred?
Prolonged, severe drought has a dangerous effect on a savanna ecosystem, with grazing patterns exacerbating this effect. The combination of severe drought and grazing can change a grassland of primarily edible, perennial grasses to a savanna dominated by inedible grasses and plants.
Is the savanna hot or cold?
WEATHER: An important factor in the savanna is climate. The climate is usually warm and temperatures range from 68° to 86°F (20 to 30°C). Savannas exist in areas where there is a 6 – 8 month wet summer season, and a 4 – 6 month dry winter season.
Why do savannas need fire?
Savanna fires keep tree cover low and prevent forests from encroaching on the grassland. When tree cover is high, as in a forest, fires cannot spread as easily, halting the savanna’s advance into the forest.
What biome is savanna?
A savanna is a rolling grassland scattered with shrubs and isolated trees, which can be found between a tropical rainforest and desert biome. Not enough rain falls on a savanna to support forests. Savannas are also known as tropical grasslands.
Is savannah a desert?
Savannas are also characterised by seasonal water availability, with the majority of rainfall confined to one season; they are associated with several types of biomes, and are frequently in a transitional zone between forest and desert or grassland, though they’re mostly a transition between desert to forest.
What is a savanna for kids?
Savannahs are flat grasslands with scattered trees and shrubs. They’re usually found near to the equator (the halfway point between the north and south parts of the Earth). This part of the world gets more direct sunlight than anywhere else, so the temperature is warm, all year round!
Are savannas dry?
In the savanna climate there is a distinct dry season, which is in the winter. Savannas get all their rain in the summer months. During the distinct dry season of a savanna, most of the plants shrivel up and die. Some rivers and streams dry up.
How do savannah fires start?
These fires are usually lit by cattle farmers as part of their traditional management of the Savannas where their animals graze. Some fires are started to stimulate new growth of nutritious grass for their animals, others are used to control the numbers of parasitic ticks or manage the growth of thorny scrub.
Does a Savannah have sand?
The Serengeti Plains are a grass savanna that has very dry but nutrient-rich volcanic sand. Around 2 million large plant-eating mammals live in the savanna.