Larvae from Afar Colonize Deep-Sea Hydrothermal Vents

These flashcards cover key concepts from the lecture on larval supply and ecological dynamics following a volcanic eruption at deep-sea hydrothermal vents.

The planktonic larval stage is critical for marine benthic species as it confers the ability to __.

disperse and connect remote populations.

Larval-mediated connectivity is particularly interesting in deep-sea hydrothermal vent communities due to their __ habitat.

patchy and transient.

The catastrophic eruption at vents near 9°50′N on the East Pacific Rise allowed for the study of __ in an absence of local source populations.

larval supply.

After the eruption, the gastropod __ appeared as an immigrant possibly from over 300 km away.

Ctenopelta porifera.

Established vent populations may retain larvae and could be __ in isolation.

self-sustaining.

The marked change in species composition of larvae and colonists after the eruption suggests that __ populations from remote areas could colonize the vent.

pioneer.

The study on larval supply and colonization was facilitated by previous monitoring efforts that had been in place __ the eruption.

before.

Larval supply was measured using sediment traps deployed in the deep-sea hydrothermal vent region. The mean flux was significantly affected __ the eruption.

after.

The significant decline of species such as Cyathermia naticoides after the eruption indicates a possible reliance on __ local populations for larval supply.

nearby.

One of the challenges in studying larval supply in marine systems is determining if recruits are from __ or remote sources.

local.

The complex interplay of larval supply and environmental conditions can lead to __ within vent communities after disturbances.

succession.

Changes in larval supply and community composition after the disturbance may signify an __ in species dominance post-eruption.

ecological regime shift.

The conference discusses the implications of larval dispersal in __ marine and ecological systems.

disturbed.

Observations at the East Pacific Rise demonstrate that post-disturbance populations can influence larval __ over time.

connectivity.

Understanding how often vent populations become open to colonization is vital for predicting the effects of natural perturbations or __ impacts.

anthropogenic.