Question

Aque tipo de bacterias se refiere el parrafo,¿haterotrofas o autótrofas? ¿por que? ​

Answer 1

Verified answer

Respuesta:

The density of heterotrophic bacteria is greater than autotrophic in marine snow aggregates influenced by

continental runoff. Four coral reef areas at different distances from the Canal del Dique served to evaluate this

premise; this canal is the main source of inland resources for the coral reefs of the Nuestra Señora del Rosario

archipelago in Cartagena in the Colombian Caribbean. The average density of microorganisms in marine snow

aggregates was determined using epifluorescence. The results showed higher density of heterotrophic bacteria

(3.63 x 104

± 1.6 x 104

SE cells mL-1) than autotrophic (6 x 103

± 1.3 x 103

SE cells mL-1), mainly in reefs near

continental runoff discharges (heterotrophic bacteria density of 8.9 x 104

cells mL-1 and 3 x 104

cells mL-1 Isla

Arena and Tesoro, respectively). The density of microorganisms found is typical of high-particulate organic

matter areas and, therefore, could be a potential indicator of continental runoff. Future studies should focus on

determining the composition of the bacterial community associated with marine snow and its potential virulence

on reef organisms.

Keywords: Coral Reefs; bacteria; epifluorescence; muddy marine snow; terrestrial runoff.