Lab 7: Soil Arthropods Guide to Common Soil Arthropods Name

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Lab 7: Soil Arthropods Guide to Common Soil Arthropods Name: __________________________ PART I. Identification Mites (Class Arachnida, Order Acari): Round Worms (Phylum Nematoda): Segmented Worms (Phylum Annelida, Class Oligochaeta): Leeches (Phylum Annelida, Class Hirundinea): Snails, Slugs (Phylum Mollusca, Class Gastropoda): Isopod (Phylum Crustacea, Order Isopoda): Centipedes (Phylum Uniramia, Class Chilopoda) Millipedes (Phylum Uniramia, Class Diplopoda): Insects (Phylum Arthropoda, Class Insecta) Hymenoptera: Formicidae Collembola Ants Springtails Coleoptera Coleoptera Beetles (grubs) Beetles (adults) Additional, Morpho-species (draw and describe each of the “artificial” designations used in your data reporting): Data Collection Collection Site Name TAXA/Morpho-species TALLY TOTALS Part II. Soil Arthropods Study 1. Report your results – major trends, morphological differences in guilds between samples, etc. LINEAR TRANSECT: DEPTH PROFILE: 2. Discuss your results – why did the arthropod assemblages vary as they did in your samples? Part III. Identification Create a Dichotomous Key for the orGanisms identified in your Group samples: these are set up as couplets of two choices that are opposite. For example: 1A. Shape does not have discernible “sides” … …CIRCLE 1B. Shape has discernible sides … … 2 2A. Sides of shape are all of equal length… …3 2B. Sides of shape are not all of equal length… … RECTANGLE 3A. Shape has three sides … … TRIANGLE 3B. Shape has four sides … … SQUARE Select SIX of the soil organisms you identified in this lab and create a dichotomous key that can be used to identify them. Key approved by: ___________________________________________________________ .

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