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How Habitat Fragmentation Affects Arthropod Diversity

CSEF · 2006 Zoology

Bryce W. Trevett · Palos Verdes High School, Palos Verdes Estates

Overview

Objectives/Goals This research project was designed to find out if arthropod diversity decreases with increasing habitat fragmentation and development. Methods/Materials Research was conducted in chosen sites of habitat fragments in Palos Verdes. Three sites were chosen for the project that were between 0.5 and 1.5 miles from development. The arthropods were captured by constructing two pit-fall traps each site. To measure the arthropod diversity, we used a few simple elements. The number of species of arthropods were recorded, the number of individuals were recorded, and the Simpson#s Diversity Index was used to calculate the data. Results Species A: Pill bug (Armadillidum vulgare). Species B: Grass spider (Agelenopsis spp). Species C: Black widow (Latrodectus mactans). Species D: Broad-necked darkling Beatle (Coelanemis californicus). Species E: European Earwig (Forficula auricularia). Species F: Common Black Ground Beatle ( Pterostichus spp). Species G: Silvestri#s Scorpion (Paruroctonus silvestii). Species H: Jerusalem cricket (Stenopelmatus fuscus). Species I: California spanworm (Procherodes truxaliata). Site Name Can number bnumNumber Type and # of different species found in can Number of arthropods in can Del Cerro- between ½ and 1 mile #1 C-1, G-1, H-6 8 Del Cerro- between ½ and 1 mile #2 I-1, F-4, D-1 6 Bogdonavich- ½ mile #1 B-1, A-1, E-2 4 Bogdonavich- ½ mile #2 B-1, A-2 3 La Dera Linda- between 1 and 1 ½ mile. #1 C-1, D-1,G-1 3 La Dera Linda- between 1 and 1 ½ mile #2 E-15, A-3, F-2 20 Site Name Can number bnumNumber Type and # of different species found in can Total number of different species Del Cerro- between ½ and 1 mile #1 C-1, G-1, H-6 3 Del Cerro- between ½ and 1 mile #2 I-1, F-4, D-1 3 Bogdonavich- ½ mile #1 B-1, A-1, E-2 3 Bogdonavich- ½ mile #2 B-1, A-2 2 La Dera Linda- between 1 and 1 ½ mile. #1 C-1, D-1,G-1 3 La Dera Linda- between 1 and 1 ½ mile #2 E-15, A-3, F-2 3

Summary statement

This research project was conducted to find out how arthropod diversity is effected by the constant development happening all over Palos Verdes and if it is increasing or decreasing due to habitat fragmentation.

Help received

Mother helped decorate poster board. Uncle helped peer revise report.

Competition history

  • CSEF 2006 Zoology · Entry S1919

Resources

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