Fieldwork Biology Fauna Holland Part 2
Introduction The Braakman was a large tidal inlet in the middle of Zeeuws-Vlaanderen, on the south bank of the Westerschelde, west of the city Terneuzen. We went to this area the 9th and 10th of septembre 2010. Now we are willing to tell you what we have found during these days.
Experiment 8 Birds and Mammals Research question: Whichbirds and mammals are common in the Braakman? Hypothesis: If we findbirds and mammals in the Braakman, itwillprobablybehorses, cows, bats, rabbits, gulls, canada geese and mallards. Materials and method: During this experiment we were standing by a, so called, ‘gluurmuur’. From here we could see a lot of flying animal. We used a binocular to see the birds better and a bird guide to name them. We also searched for mammals, which we were able to find by looking out for droppings and footprints.
Experiment 8 Birds and Mammals Some of the animals we found:
Experiment 8 Birds and Mammals Conclusion and discussion: We have discovered a lot of animals in the Braakman. Our hypothesis is accepted. Apart from that we also discovered why all these different animals live in the Braakman. For example the horses and cows that are used to eat the grass so it looks more natural than when a human mowes the grass.
Experiment 9 Flyinginsects Research question: Which flying insects will we come across in the Braakman? Hypothesis: If there are flying insects in the Braakman, it will be Butterflies (Lepidoptera), wasps (Hymenoptera) or the zwartrozezandbij(Andrenaclarkella). Materials and method: At this trial we tried to catch the flying insects using a net. When we saw the insects close, we identified them using an insect guide.
Experiment 9 Flyinginsects Results:
Experiment 9 Flyinginsects Conclusion and discussion:This trial shows there are different kinds of flying insects in the Braakman, as we see in the results. So our hypothesis is accepted. To come across the flying insects, there is probably enough food, for example the nectar of the flowers. This is also a good place to reproduce. Aglaisio Polygoniac-album Maniolajurtina
Experiment 10 Crawling insects Research question: Whichcrawling insects will we comeacross in the Braakman? Hypothesis: Ifthere are crawling insects in the Braakman, itwillbemosquitos(Nematocera),wasps(Hymenoptera),ants and beetles. VespulaVulgar Coleoptera Formicidae
Experiment 10 Crawling insects Materialsandmethod: We’veused a net to catch the crawlingandflying insects bydraggingitthrough the grassand plants. Insects caught in the net, were put into a jarandwereidentifiedusingan insect guide.
Experiment 10 Crawling insects Results: Conclusionanddiscussion: Our hypothesis is accepted. We’vediscovered these insects becausethere’senough food andthere are enough nesting placesand partners. We’velearntabout new insects anddiscovered the broadecosystem of the Braakman.
Experiment 11 Insects Research question: What insects will we find in the ground we’ve been researching? Hypothesis: If there are insects present in the ground in the Braakman, it will be ants (Formicidae) and ground beetles (Carabidae). Materials and method: We dug a hole in the ground where we put cans in that served as traps. In the cans we put pieces of cheese, meat and fruit to attract the insects. With the ‘insectenzuiger’ we were able to observe the insects. We identified the insects with an insect guide.
Experiment 11 Insects Results: Conclusion and discussion: Our hypothesis can be accepted. We found ants and ground beetles, but also a mealworm beetle and a strawberry seed beetle. In the Braakman, there’s enough food for these animals, such as: plants and death insects. The food in the traps has also attracted the insects.
Experiment 11 Insects Tenebriomolitor Formicidae Harpalusrufipes
Experiment 12 Micro-organisms Research question: Whichmicro-organismscanbe found in the soil? Hypothesis: Ifthere are micro-organisms in the soil, itwillbebacteria(Bacteria), water bears(Tardigrada), springtails(Collembola), giantroundworms(Ascarislumbricoides) or mites(Acariformes) Materialsand Method: We put a 70%-alcohol solution intoan Erlenmeyer flask. Aboveit we placed a tripodwith a crater. Thiscrater was filledwith the collectedsoil. On top of it we placed a light which was on for 24 hours, sothatmicro-organisms in the soilwouldcome out of itandfallinto the flask. Afterthat, we put the solution in a Petri dishandlookedformicro-organismswith a binocularmagnifier.
Experiment 12 Micro-organisms Results: Therewere no micro-organisms present in the soil. Conclusionanddiscussion: Our hypothesis isn’taccepted. The reasonwhy we haven’t found anymicro-organismsmightbethat, dueto the rain, the passages foroxygen had been obstructed. This shows how large the influence of abiotic factors canbe. Acariformes AscarislumbricoidesTardigrada
The End Are thereanyquestions?