What Are The Effects Of Diversity In Biodiversity

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Five Research Articles on Biodiversity Succession in Ecology: Summaries
Article 1: “Effects of nitrogen deposition on soil and vegetation in primary succession stages in inland drift sands”
What kind of system was being considered?
-They studied the Inland drift sands in the areas of the Netherlands. They specifically looked and studied at the Drethe, Veluwe, Utrecht, Brabant, and along Meuse. They wanted to consider how plants grow and develop during succession.
The author’s hypothesis:
-The experimenters had two questions they were trying to answer. The first one was, “How do vegetation and soil change during succession? And the second one was “How are soil parameters and species abundance affected by atmospheric nitrogen deposition?” they
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The author’s hypothesis:
-The author’s objectives/hypothesis were to see how trade-offs between ecosystem services above and below grounds effect biodiversity and how they are important. They also want to understand the effects of succession and believed the best way to do so was to look at a range of different ecosystem processes and services. The services they are looking at are things like C-pools (Carbon- pools) and fluxes and soil nutrient dynamics.
What parameters they looked at and why?
-There are two parallel studies of woody succession in grasslands that they look and exam. They want to assess the below and above ground of the ecosystems. They had two sites they were examining the first one is, Mt. Barker which is a Pinus nigra Arnold non-native invasive succession site. Mt. Barker has one of the largest trees being 22 years old and 14 meters tall. The second site is, Avoca which is a Kunzea ericoides native succession site. And the largest tree measured there was 8 meters tall and about 54 years old. They analyzed the two site independently. The above groubd C pools were based on the tree and shrub biomass. They measured groundcover by harvesting all the vegetation in 0.25 m2 sample for about every plot they were studying. They sorted out the grass and small-woody plants by their biomass and weighted
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-The systems they were considering are the sandy inland sites. Located on former military training area (Dauban; 51°19′N, 14°41′E; BMBF #01LN0008). They also had some studies in East German.
The author’s hypothesis:
-Which and how many species of testate amoebae do occur in a developing substrate at a distinct time, and at what abundance? What determines their “community assembly”? They also wanted to test and see the beginnings of biodiversity development in the testate amoebae taxa on different quality and locations. Will there be interspecific competition and which species are the best to colonize the new land?

What parameters they looked at and why?
-They sampled small amounts of soil from sandy inland dune sites they tabled them table A and table B, which was located on a former military training areas. Both inland dune sites display different successional stages. All the data was recoded into tables so that they are able to see the differences in successional stages and how the species on site A are different then the species on site B. The experinments took all the soil samples and anazliyed them for the testate amoebae between the time period of 1984 thorough 1989. When in east German they also sampled soil to see the if there was a community pattern that would maybe cause the species to

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