ecosystems qp1 Flashcards
how do u calculate percentage efficiency from proucers and herbivores
-producers collected
-primary consumers collected
-collected from the same area
-measure biomass/ drymass of individual or population
-energy content calculated of producer and herbivore
-use of caliormeter
-primary consumer energy/ producer energy x 100
what are two examples why ecosystems are dynamic
-nnumber/ abundance varies from year t year
-as vegeation changes/ sucession occurs this changes numbers
suggest why bodies are not decomposed in peat bogs
soil bacteria/ fungi/ microbes cant survive
-decomposers not present/ active
-water logging reduces air/ oxygen
-acidity/ low pH stops decaying enzymes from working
why is large scale removal of peat bogs not encouraged
-bog habitat/ ecosystem takes a long time to form/ hard to replace
-loss of biodiversity/ rare species