• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

To collect and identify species of organisms and plants in an area of 1m2 in a pond.

Extracts from this document...


Aneal Khakhar Biology-Block Week Pond Dipping Investigation Aim: To collect and identify species of organisms and plants in an area of 1m2 in a pond. Equipment: A Nets (x2) - For catching pond animals in Magnifier (x1) - Used to see small organisms in more detail Trays (x3) - Three trays used to put materials (organisms/matter) in, one for every stage i.e. top, middle and bottom parts of the leaf , but mainly for looking at the animals in. Spoons (x2) - used to take organisms out of trays Pipette (x1) - Used to take up small organisms Organism Identifier (x2) - To identify organisms to help gather information to put the species in some order (producer, primary consumer, secondary consumer) and to then put them into pyramids of numbers and biomass. ...read more.


This should be done for each stage until all organisms have been obtained. Next you must identify them, using the Organism identifier and microscope to establish what each organism is. You must then identify which organism is in which trophic level. After this you have to count and weigh the organisms. As there where only a few of each organism we decided to weigh all of them instead of weighing one as a representation, this making the investigation for drawing a pyramid of biomass fairer overall. After obtaining all of this it will then be possible to draw pyramids of numbers and pyramids of biomass to show your results. Results The results shown below are listed as they where obtained from each of the three layers (* not trophic level): Top Layer of pond: Boatman (x 1) ...read more.


was only an estimated field as we did not have any guidelines as to where the boundary stared/ended causing inaccuracy in the results. Also as we only took a sample on one small section of the pond it would be unrealistic to say that it was a representation for the whole pond. Also when we took the organisms out of the trays some may have been left uncounted for or alternatively too small to count. But from the results we did obtain it was possible to draw pyramids of numbers and biomass however inaccurate the results may have been. To further this investigation I would look at making the whole investigation a little more accurate than it actually was. I would do this by using different types of obtaining the organisms such as kick sampling. I would also look at what organisms live at varying oxygen levels or pollution levels. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Energy, Respiration & the Environment section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Energy, Respiration & the Environment essays

  1. An investigation into the distribution of adult and juvenile limpets on a rocky shoreline.

    This allows me to reject the null hypothesis and my data has 99.9 % certainity that there is a significant difference in the distribution of limpets between the lower, middle and upper shores. l can therefore assume that there must be some underlying factors affecting the distribution of limpets on the rocky shore heights.

  2. Coursework: Response to Light in Blowfly Larvae.

    Temperature When flesh decays the bacteria which are decomposing it give off heat due to respiration. Therefore the maggots may move towards heat as they will expect their food source to be where there is a higher temperature. However, this would influence my results if the temperature is different in the different boxes as them move towards whichever is warmer.

  1. Flat periwinkle Investigation

    Null Hypothesis: The ratio of different colours of flat periwinkles will be independent of zonation. Site Justification: To test the hypothesis a site had to be chosen in which flat periwinkles would be abundant. Background Reading (Fish JD and Fish S 1996)

  2. Weed study. Dandelions - descrption and characteristics. Investigation to dandelion distribution.

    These are the species that first colonize disturbed habitats, lands stripped bare by natural catastrophes or by human exploitation. The colorful perennial known as fireweed (Epilobium angustifolium), for example, earned its name for the speed with which it follows in the wake of forest fires.

  1. I will be comparing two ponds with different amount and variety of species in ...

    Also I predict that the pond with the higher pH will contain more herbivores because vegetation removes carbon dioxide from the water during photosynthesis and this leads to an increase in pH. Furthermore I think that the temperature of the water will have effects on water quality as the temperature

  2. The Ozone Layer.

    = ?V to get E = h (C/?) Considering UV is between 200-400nm its energies vary from... Upper = 6.63 x 10 x (3 x 10/200 x 10) = 9.94 x 10 Per Mole = 9.94 x 10 x 6.02 x 10 = 598 KJ/mol Lower = 6.63 x 10 x (3 x 10/400 x 10)

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work