Question

масса лисы 15 кг. основной рацион хищника составляет грызуны, а продуктивность наземной растительности на 1 кв. метр - 300 г. Определить необходимую площадь (в га) соответствующего биоценоза. 50% указанной массы лисы составляет вода

Answer 1

Правило экологической пирамиды - закономерность, согласно которой количество растительного вещества, служащего основой цепи питания, примерно в 10 раз больше, чем масса растительноядных животных, и каждый последующий пищевой уровень также имеет массу, в 10 раз меньшую.

15кг*0,5 = 7,5кг масса лисицы (0,5 - это 50% воды)
Лисица 7,5 кг 
Грызуны 75кг 
Растительность 750кг 
300г=0,3кг 
Площадь биоценоза = 750/0,3кг=2500 м квадратных

Answer 2

Calculation of Required Biozone Area

To determine the required area of the corresponding biozone, we need to consider the mass of the fox, its diet, and the productivity of terrestrial vegetation.

Given: - The mass of the fox is 15 kg. - The main diet of the predator consists of rodents. - The productivity of terrestrial vegetation is 300 g per square meter.

To calculate the required area, we need to consider that 50% of the fox's mass is water. Therefore, the effective mass of the fox is 15 kg * 0.5 = 7.5 kg.

The fox's diet consists of rodents, but we don't have specific information about the amount of rodents consumed. Therefore, we cannot calculate the exact area required for the biozone based on the fox's diet.

However, we can estimate the required area by assuming that the fox consumes a certain amount of rodents per day. Let's assume the fox consumes 10% of its body weight in rodents daily. This means the fox consumes 7.5 kg * 0.1 = 0.75 kg of rodents per day.

To convert the amount of rodents consumed into the area of vegetation required to sustain them, we need to know the average weight of the rodents in the fox's diet. Unfortunately, this information is not provided.

Without the specific information about the weight of the rodents consumed, we cannot calculate the exact area required for the biozone. The calculation would require additional data on the average weight of the rodents in the fox's diet.

Therefore, based on the information provided, we cannot determine the necessary area of the corresponding biozone.

Please note that the calculation is based on assumptions and estimations due to the lack of specific information.