{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

General Ecology_Mahaffy_Date_030410

General Ecology_Mahaffy_Date_030410 - Abiotic factors and...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Abiotic factors and adaptations continued Dealing with water stress In animals More complex mechanisms but mostly same challenges as with plants See fig 4.23 and 4.24 Oxidative metabolism = cellular respiration (aerobic) Remember terrestrial organisms need to retain water and balance salts Kidneys help do this Only birds and mammals are capable of creating urine that’s more concentrated than their blood In plants Plants also balance salts Excludes Don’t let salt in vascular tissue Red mangrove Excretes Excretes salt from its vascular tissue Black mangrove, white mangrove, saltbush Tolerates Pickleweed, glasswort Dissolved substances Oxygen Discussed with thermocline Dissolves from the air into water and diffuses Cold water holds more gas Fresh water holds more gas Diffusion much slower in water than in air Max solubility of oxygen is 1% in water vs. 21% in the atmosphere
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}