PENGARUH HABITAT KOMPLEKS TERHADAP KOMPOSISI KOMUNITAS MAKROINVETEBRATA DALAM SEBUAH KOLAM AIR TAWAR YANG BERSTATUS DYSTROPHIC

Sabaruddin Wagiman Tjokrokusumo

Abstract


A study of the role of habitat complexity and predation on the composition of
the macroinvertebrate community in a small dystrophic wetland was
undertaken using artificial substrates. Rectangular samplers of increasing
complexity were constructed from nylon mesh and wooden dowelling.
Samplers of three levels of complexity were developed in both caged and
uncaged forms to evaluate the effects of substrate complexity and predation
on macroinvertebrate richness and abundance. A total of 24 samplers (6
treatments x 4 relicates were deployed in swamp for 8 weeks in September/
November 1995. The results indicated that increased habitat complexity does
lead to species richness, but cages have an effect in addition to layers as
preferred habitat for both prey and predator. Increasing richness is not followed
by an increase in abundance in more complex habitats. However, an increase
in habitat complexity tended to result in a decrease in abundance, probably
due to predation with the lowest abundance found at intermediate compexity.


Refbacks

  • There are currently no refbacks.