The more species of organisms, why is it said that there are more food chains in an ecosystem

The greater the variety of organisms, the more predators and predators there are for one of them, and thus the greater the food chain; Since the energy transfer efficiency is generally only 20%, the length of the food chain is not very long, generally only 5 trophic levels.

I think the food chain is getting bigger.

Because the predation and food relationship between organisms is not exactly one-to-one, such as mice, not only with snakes have a food chain, but also to other animals such as owls, more, the variety of organisms has increased, and at the same time that some food chains are extended, there will also be food chain relationships with other species, so the food chain will become more.

In the process of survival, the organism has been formed to adapt to the environment in which it lives. When there are many types of organisms, each organism naturally has more food, and its natural enemies are also more, so the food chain generally increases. The food chain is generally not very long, and since the energy transfer efficiency is only 20% at most, the longer the food chain, the less energy can be used in the end.

The food chain in an ecosystem generally does not exceed 5 trophic levels.

The most common relationship between organisms is predation

After all, only the producer doesn't have to prey on other creatures

The longest food chain is generally no more than 5 trophic levels Did this teacher talk about it?

Matter and energy decrease step by step along the food chain to 5 There is very little energy in matter

This is determined by the efficiency of energy transfer (which can be understood as utilization) between adjacent trophic levels, because between two adjacent trophic levels, the transfer of energy from one trophic level to the next is only 10%-20%. Let's take a simple example to understand this.

There is a food chain.

Rice Leaf Borer Farmland Spider Frog Human The efficiency of energy transfer is calculated at 10%. The proportional relationships that exist in this food chain are: (the proportions are not rigorous, only for qualitative illustration).

If 10,000 kilograms of rice are produced per mu, then it is only enough to feed 1,000 kilograms of leaf rollers;

1,000 kilograms of leaf rollers is only enough to feed 100 kilograms of farmland spiders;

100 kilograms of farmland spiders are only enough to feed 10 kilograms of frogs;

10 kg of frogs is only enough to feed a person weighing only 1 kg.

Note that the rice yield here is a year's yield, and the kilogram here is both the weight of nutrients and the weight of stored materials, which can be seen as the amount of energy available. Most of the energy is lost as it is transferred from one level to the next, so it is more difficult for organisms with higher trophic levels to get enough food to survive.

Suppose man feeds only on frogs, and frogs feed only on spiders. Well, a person cannot survive if he eats only 10 kilograms of frogs per year. Therefore, people can only get enough food by lowering their trophic levels and taking rice as the staple food.

In short, the higher the trophic level, the harder it is to get enough food. This is the reason that the higher the trophic level, the lower the quantity.

The trophic level of the human being can only be regarded as the second trophic level from the main ** consideration of food).

Ecosystem. The food chain can be complex, but not too long, because animals (such as frogs) may change their food at different stages of ontogeny, and the food chain linked to predation will change with it. The food chain may change in different seasons due to the different main foods and the composition of the predator's main food.

Producer photosynthesis.

Strength does not change the food chain. The food chain is also known as the "nutrient chain". In order to maintain their own life activities, various organisms in the ecosystem must feed on other organisms.

Relationship. This feeding relationship is actually the relationship between solar energy from one organism to another, that is, the flow and conversion of material energy through the food chain. A food chain generally consists of 3-5 links

The number of organisms at different points in the food chain is relatively constant in order to maintain a natural balance. There are many kinds of organisms in the ecosystem, and they play different roles in the ecosystem, and according to the role they play in the movement of energy and matter, they can be classified into three categories: producers, consumers and decomposers.

The most common relationship between organisms is predation

After all, only the producer doesn't have to prey on other creatures

The longest food chain is generally not more than one trophic level, has this teacher talked about it?

Matter and energy decrease step by step along the food chain to 5 There is very little energy in matter

This refers to different food chains, each of which represents several different organisms, and the more food chains, the more types of different organisms represented.

The most common relationship between organisms is predation

After all, only the producer doesn't have to prey on other creatures

The longest food chain is generally no more than 5 trophic levels Did this teacher talk about it?

Matter and energy decrease step by step along the food chain to 5 There is very little energy in matter

refers to different food chains, the more different kinds of organisms represented, and each food chain represents several different organisms, the more food chains.

Yes, the more species of organisms in the ecosystem, the more complex the food chain and food web, and the stronger the self-regulation ability, the strongest self-regulation ability of the tropical rainforest ecosystem and the weakest self-regulation ability of the farmland ecosystem.

Yes, because the loss of one species does not cause the entire food chain to break and then the ecosystem collapses.

If the number of a single species is large, it can cause ecological imbalance. So it's wrong.

Marine ecosystems.

For example, in the savannah, cattle, sheep, and horses are all herbivores that are consumers, and they are also preyed upon by wolves. If only sheep exist, if there is an accident, the number of sheep decreases, but the number of wolves does not. Then, the sheep are eaten up, and the grass is not eaten by animals, and it reproduces indefinitely; The wolves had no meat to eat, and they were all extinct.

The whole biological chain is broken. With cattle and horses, when the number of sheep decreases, other herbivores can still eat the excess grass and feed the surplus wolves. Thus maintaining the stability of the entire ecosystem.

And if this accident comes from another ecosystem, such as a new pathogen that specifically targets sheep, the surviving sheep can also gain immunity to the pathogen in the process of cattle and horses filling the position, thereby increasing the resistance of the entire ecosystem to the foreign pathogen.

This resistance stability is limited, and there is a quote in the book: the self-regulating capacity of ecosystems is not unlimited. Anything that says is too much is very likely to be wrong.

Marine ecosystems have a wide variety of organisms.

In the ecosystem, different organisms form a food chain due to the relationship between eating and being eaten.

The food chain refers to the organisms living in the same environment, which either feed on other organisms or are eaten by other organisms. In the workplace, the food chain is characterized by competing and cooperating interests.

The food chain refers to the connection of various organisms in a biome due to food relationships.

Components: The indispensable components of the food chain structure are animals and plants.

In an ecosystem, the chain structure formed between different organisms due to the relationship between eating and being eaten is called the food chain. The food chain is written in such a way that the producer (plant) as the starting point and the uneaten animal as the end point, with the arrow pointing in the direction of the predator. It can be seen that the indispensable components of the food chain structure are animals and plants.

The answer is to eat and be eaten.

The food chain reflects the relationship between producers and consumers between eating and being eaten, and the trophic structure of the ecosystem refers to the food chain and food web. Because most of the animal foods in the ecosystem are not single, but diverse, many food chains in the ecosystem are often intertwined into a network to form complex trophic relationships. Since an animal may have multiple foods, many food chains are intertwined to form a food web.

The food chain reveals the laws of matter circulation and energy flow in biological systems, pointing out that when matter and energy are transformed from one organism to another, the biomass of the latter (higher trophic level) is about one-tenth of the biomass of the former (lower trophic level).

Matter and energy in ecosystems flow along food chains and food webs.

Matter refers to organic matter and inorganic matter (mainly organic matter) that can be recycled and reused with inorganic nature. In ecosystems, the flow of energy and the cycle of matter are closely linked and carry out at the same time.

The most important link between organisms in an ecosystem is through the food chain and the food web as a whole, so the food chain and the food web are the main channels for energy flow and material circulation in the ecosystem.

In the ecosystem, the food chain refers to the relationship between producers and consumers between eating and being eaten, and multiple food chains are intertwined to form a food web. As the eating and the being eaten, matter and energy flow together.

For example, the food chain: grass rabbit eagle, rabbit eats grass, the matter and energy stored by grass photosynthesis enters the rabbit's body, the eagle eats the rabbit, and the matter and energy stored in the rabbit's body go to the eagle's body.

Matter and energy in ecosystems flow along food chains and food webs. When toxic substances emitted by humans enter the ecosystem, they accumulate through the food chain, harming many organisms in the ecosystem and ultimately threatening humans.

Among them, energy refers to various forms of energy related to life activities, such as: solar energy, chemical energy, etc., while matter refers to various elemental substances.

In the ecosystem, the chemical elements C, H, O, N, P, and S that make up living organisms are constantly evolving from the inorganic environment to life.

The circular process of the biological community and back to the inorganic environment is the material cycle of the ecosystem. The ecosystem here refers to the largest ecosystem on the earth, the biosphere, in which the material cycle is global, so it is also called the biogeochemical cycle.

For example, in the food chain of "grass rats, snakes, and owls", if the number of snakes decreases significantly, the number of owls will decrease and the number of rats will increase for a period of time; Then, the decrease of owls and the increase of rats will gradually increase the number of snakes, so that the whole ecosystem is in a dynamic equilibrium state, which shows that the ecosystem has a certain ability to self-regulate, but there is a certain limit to this ability to regulate

Therefore, d