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Adaptations of animals on the rocky shore.

Adaptations of animals on the rocky shore. What could be affecting this environment???. Abiotic factors that influence distribution on the rocky shore. Salinity Temperature Moisture levels/ amount of time immersed by tide. Wind exposure Wave exposure Light intensity. Adaptations.

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Adaptations of animals on the rocky shore.

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  1. Adaptations of animals on the rocky shore.

  2. What could be affecting this environment???

  3. Abiotic factors that influence distribution on the rocky shore. • Salinity • Temperature • Moisture levels/ amount of time immersed by tide. • Wind exposure • Wave exposure • Light intensity

  4. Adaptations Adaptations are generally: Structural - eg. thick, impermeable shells to reduce water loss and radiation effects. Behavioural - eg. seeking small crevices for shelter to reduce the drying effects of the wind. Physiological - eg. an ability to lower metabolic rates during exposed periods to minimise oxygen consumption

  5. Biotic factors that influence distribution on the rocky shore. • Competition • Predation • Food availability

  6. Bladder Kelp • Need sunlight for photosynthesis. • Strong attachment to rocks • High demand for water • Thick, tough leaves to cope with strong waves. • Bladders for flotation

  7. NeptunesNeclace • Tough modified leaves. • Air filled bladders to enable flotation. • Strong attachments to rocks.

  8. Chitons • Very strong attachment to rocks- foot. • Attachment avoids being washed off rocks/ picked off- predation • Streamlined shape to prevent being washed off rocks

  9. Limpets • Very strong attachment to rocks- foot. • Attachment avoids being washed off rocks/ picked off- predation • Streamlined shape to prevent being washed off rocks • Hard shell- protection from predation

  10. Crabs • Mobile- escape preds/ search out food. • Modified leg into claw for protection and territorial displays. • Streamlined shape to limit chances of being washed off rocks. • Behavoiraladaptions- burrowing and living under rocks • These help to avoid desiccation.

  11. Hermit Crab • Mobile- escape preds/ search out food. • Modified leg into claw for protection and territorial displays. • Streamlined shape to limit chances of being washed off rocks. • Behavioural adaptations- burrowing and living under rocks • Shell provides protection/ camoflague

  12. Barnacles • Strong attachment to rocks- glue • Hard shell- protection from predators/ desiccation • Free swimming larvae- distributed to reduce competition • Ability to close up shell when tide is out to prevent dehydration.

  13. Whelk • Hard shell to avoid predation- eat barnacles. • Mobile foot that can be retracted to avoid desiccation. • Can close shell. • Food must hold to rocks to avoid being washed off • Sheltering behaviour

  14. Snail (includes periwinkle) • Hard shell • Strong foot • Ability to close up to avoid desiccation.

  15. Mussles • Strong attachment to rock- Bises hairs. • Ability to open and close shell to avoid desiccation/ feed/ avoid predation. • Free swimming larvae • Cant withstand high temperatures

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