Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
11 Cards in this Set
- Front
- Back
|
Define resilience and state factors that make reefs resilient and those that decrease their resilience.
|
Resilience: The ability to withstand & recover from difficult conditions
Factors: Increase resilient: Biodiversity Muliple levels of the food pyramid -> Ranging from primary producers get eaten by filter feeders, herbivores eat the plants Decrease resilient: Loss of biodiversity (fishing, habitat loss) Reduced reef growth; chaning relative abundance of species Altered nutrient regimes (pollution, climate change) Eutrophication Increased macroalgae (competition for space) |
|
|
How does functional diversity differ from biodiversity?
|
Biodiversity is the degree of variation of life forms with in a given species, or ecosystem. Functional diversity is how they all are inter connected (primary producers, decomposers)
|
|
|
Define functional group.
|
Species that perform a similar role in ecosystem processes, irrespective of taxonomic affinites
|
|
|
Define niche.
|
How an organism or population responds to the distribution of resources and competitors
|
|
|
How has coral cover changed in the Caribbean over the last 25 years? List 3 different things that have contributed to this change.
|
Coral bleaching because of temperature change.
Costal development Pollution |
|
|
What factors make some grazers better at removing algae than others?
|
Macro-herbivores have a higher grazing rate, allowing them to remove the algae better than others.
|
|
|
Excavating herbivores (those that can bite into the dead coral substrate) play one beneficial roles while eating. List them.
|
- They get rid of the dead excess coral
|
|
|
List 3 benefits of establishing areas protected from fishing (marine protected areas, MPAs).
|
Enchances biomass, density, sizes and diversity of mamals, turtles, fishes & invertebrates
|
|
|
List 2 reasons why larger fish can be more helpful in the ecosystem.
|
Bigger fish have more babies
Older female fish produce stronger young |
|
|
Why create networks of MPAs?
|
Protect grazers and therefore corals
|
|
|
Compare fundamental niche from realized niche. What can cause the realized niche to be smaller?
|
Fundamental niche: depends on physical (abiotic) conditions
Realized niche: depends on biological (biotic) as well as physical (abiotic) conditions |
