What Are The Five Trophic Levels

Seahorses are secondary consumers. Secondary consumers are mainly carnivores, they eat other animals. Omnivores, who eat plants and animals are also called secondary consumers.

Herbivores make up the second trophic level. Predators that eat herbivores comprise the third trophic level; if larger predators are present they are then represent a higher trophic level. Organisms that feed at several trophic levels are classified at the highest of trophic levels at which they feed. Decomposers breakdown wastes and dead organisms and return nutrients back to the soil. (Future Direction International,

An experiment documenting the effect of feeding low-quality prey like pollock to Stellar sea lions was conducted (Jeanniard du Dot et al., 2008). In the experiment there were two groups of Stellar sea lions, group H and group P. Group H was fed less herring and group P was fed pollock in equal amounts regarding caloric content. After feeding each group the restricted diets, the researchers recorded the foraging behaviors of the sea lions over the summer and the winter. All of the sea lions increased their foraging behaviors during the summer, when prey is abundant, but only group H conserved conserved energy during the winter when prey is less abundant. Group P did not reduce energy consumption in order to use energy more efficiently when it turned winter because they had less energy to use during the winter due to the low-quality diet, and that low-quality diets hurt the sea lions during times of nutritional stress (Jeanniard du Dot et al., 2008). A journal article also documented that young Stellar sea lions were more impacted by a low quality diet (Rosen, 2009). It was seen that young sea lions were more impacted by a low quality diet because of their higher energy requirements, and also their digestive capacity, which means they can't even consume a higher quantity of lower quality fish to compensate. Both of these experiments explain how low quality prey can

We took the calculated average from the herbivores and the calculated average from the carnivores and graphed them. Figure one shows those graphed averages and the calculated average for carnivores was approximately .564 and the calculated average for herbivores was around .4785. The vertical axis is the average molar width ratio measurement amount and the horizontal axis is the name of the feeding group. Figure 2 is the graph of the averages from each species in the herbivore feeding group, which include the Woodchuck, Beaver, Muskrat, and Rabbit. The vertical axis once again is the average of the width ratio and the horizontal axis is the species. Figure 3 is the graph of the averages from each species in the carnivore feeding group; Coyote, Fox, Mink,

In this video, it discusses the wide spread of trophic cascades. A trophic cascade is an ecological process which starts at the top of the food chain and goes through every single level and affects all other chains in some way. In Yellowstone national park they had went without wolves for a long time. Eventually they were re-introduced to Yellowstone Park in 1995. Although wolves are killers they also give life to all others. An example of this is before 1995, there was a very large over population of deer and although there were hunting seasons, they couldn’t control the amount of deer within the park. Therefore, the vegetation within the park had been reduced to hardly anything left. When the wolves were introduced they changed the behavior

A carnivore is an animal that gets food from killing and eating other animals. Carnivores generally eat herbivores, but can eat omnivores, and occasionally other carnivores. Animals that eat other animals, like carnivores and omnivores are important to any ecosystem, because they keep other species from getting overpopulated.

1. Give an example each of an organism that has a broad niche and an organism that has a narrow niche. Describe and compare the roles they play in their ecosystems.

Consumers are important. There is one consumer and its worms. The Great Jerboa and Cactus Wren are omnivores. They both eat vegetation and meat. Carnivores just eat meat. The Thorny Devil and Sidewinder are meat eaters. Herbivores eat plants. The Addax and Fat Sand Rat eat vegetation.

The living and nonliving components of this ecosystem are either biotic; which includes factors such as plants, animals, and microorganisms. Then you have abiotic components such as air, temperature, sunlight, wind, water and soil. Both abiotic and biotic components are necessary for balance in this ecosystem and rely on each other in the food chain of producers and consumers. Producers are at the beginning in the food chain, also known as biotic components, which rely on an abiotic such as the sun to produce their food during photosynthesis. Then there are the consumers (biotics) that rely on the producers as their primary food source, such as herbivores. Predatory omnivores are considered secondary consumers because they eat primary

The food chain is what animals eat and the cycle of what eats what. And the food cycle is in the carnivore starts at the toad eats the beetles and worms. Then the bobcat eats the elk,roe,deer. Then the short-eared owl eats rodents. But the wolf comes in and eats the przewalski's, horses,elk,moose. Then to the lynx which also eats roe,deer,rodents,and birds. Next is the omnivore cycle it starts at the stag beetles and they eat leaves,fruit,flower,and smaller bugs,and dying wood.

I can recall watching a Discovery Channel on pythons and one of the snakes that had just eaten a large rodent was cornered by the biologists. Upon finding no way out the snake began to regurgitate its meal.

I doubted that the new species are carnivores because the high daily energy expenditure will lead the new species attempts to replenish its energy through eating meat instead of plants. When animals have a high-level of physical activities, the energy usage has risen to tenfold than resting. Through the new species are carnivores, it needs to consume amounts of energy when it’s catching the prey. Also, I predicted that the previous species are herbivores because plants do not transfer amount of energy to animals since most plants are indigestible. Therefore, it leads to a lower daily energy expenditure of the previous

Following foraging there is a rapid shift to carbohydrate primarily- this is made possible by the extremely high enzymatic capacity for flux through pathways of carbohydrate and fatty acid oxidation

Everybody needs to eat, some of the things we eat are animals which are mainly

The significant variations of metal content in species of the same and different trophic levels (Table 3.2) imply that species, more than the trophic category, was the factor which best explained the variability observed in the concentration of metals in terrestrial organisms. This may be bound up their species-specific ability of active excretion of heavy metal ions and/or their ecological characteristics (Van Straalen and Van Wensem 1986; Grodziniska et al. 1987). This find is conforming to Mackay et al. (1997), who stated that “it may be the physiology of an organism, and not the trophic level which determines the internal concentration of heavy metals”. Likewise, this find, to some extent, accords with the observations of Hernández et