Biotic components of the Ecosystem Plants Animals Fish Insects Protozoa Algae Fungi Protists Bacteria 4
Abiotic components of the Ecosystem July 22, 20125 Water Light Soil
Wilderness in an Unlikely Place Location: The Woodlands, TX, Technology Forest Office Park Ecosystem: Suburban pond
Who calls the pond home? Trees line the banks and provide spots of alternating shade and sun Water plants provide sanctuary and oxygen Algae and small protozoa join plants as the first trophic level Texas is known for its insects and even small ponds don’t disappoint First-level consumers such as flies and small fish provide prey to larger second and tertiary consumers such as frogs, snakes, and birds. Bullfrogs and bluegills Turtles, spiders, and snakes Cranes, egrets, and vultures Decomposers Algae and protozoa Mayflies, dragonflies, and waterbugs Footer text here7 Cypress and willows (water’s edge) Landscape grass, coral vine, and Asian jasmine Live oaks, elms, and loblolly pines (surrounding area
Specific Interaction and Adaptation Suburban settings spark adaption Less fear of humans Changes to diet (in the real wild, species living in a pond would probably not be fed crackers and bread) Learning to live with ornamental plants and trees planted to make the pond look ‘natural’ but may not be indigenous to the region Traffic, litter, overfeeding, and proximity can cause stress to a species Invasive species such as Chinese tallow threaten native trees and shrubs 8 A keystone species is the Loblolly pine – this tree is ubiquitous in the region. Lately, it has come under attack by bark-eating beetles which can kill decades-old trees in a matter of weeks.
Factors Affecting Diversity of a Pond Immigration Succession Predation Local extinction Availability of resources July 22, 20129
Thank the ecologists! As humanity evolved, ponds disappeared. Ponds in the city are wildlife refuges. Thank your local ecologist.