Flashcards in lecture 3 - mangroves structure and herbivory Deck (10)
what characterise mangrove forests?
1) gradients in tree height
2) species zonation
describe the point centred quarter method
> groups are going to work landward to seaward
> either measure juveniles or adults
> make rules and stick to them
what does salinity correlate with in mangroves?
> strong correlation of canopy height with salinity - but variable
what is the most abundance species on the landward and seaward sides?
- Rhizophora and avicenna and lumnitzera
what herbivores prey n mangroves?
> lots of different insects
> create holes, marginal bites, scrapes and mines
> live between the leaf tissues
> layed eggs inside
> moth or fly
> animal living inside
> leaf reacts and grows around it
describe what molluscs do to the mangrove
> graze on the sediment during liw tide and goes up on trees at high tide
> the grazes on leaves
how do nutrients effect mangrove growth and herbivory?
> very site specific
> gallers more abundant on more northern areas