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86 Cards in this Set

  • Front
  • Back
5 things that affect marine reserve design
location
size
shape
number
human dimension and regulations
What are characteristics that affect location
habitat types (1 or more?)
Oceanographic features that link habitat
ecological important areas (spawning)
potential for recovery
how vulnerable it is
what activities surround it
perceptions of people
opportunities that will result from it
What are two types of open ocean reserves
seamount
epipelagic
What is special about seamounts
biological hotspots
intercept currents
sediment free?
complex communities
endemism
localized upwelling
island wake effect
currents hitting seamount will upwell
why is the epipelagic zone important
it is where more fishing occurs
upwelling occurs which affects all trophic levels
Challenges with open ocean reserves
life cycles occur in different areas
ghost fishing
open ocean is dynamic
enforcement problems
Who owns the benthos?
ghost fishing
not allowing certain types of fishing, but in the end what is allowed will end up doing damage too
Two types of seamount conservation
no trawl mpas
reserves
Considerations for epipelagic conservation
dynamic boundaries
size
follow fish using current and use that as the means to define where fishing is not allowed
what is important about the size of a mpa
that it is large enough to conserve large populations as an insurance for catastrophes
species-area curve
the greater the area, the more species you conserve. However it is logrithmic, so at 50% you can conserve 90% of species. 10% can conserve 50% of species
Explain the case study of the Hawaiian islands and species area curves
the NW Hawaiian islands which has the largest protected area, has the largest biomass, where open fisheries have the least biomass
Minimum Dynamic Area
Reserves should be larger than MDA or the smallest area that would hold an array of habitat patches representative of different stages of distribution and ecological succession
What is the most important factor to consider in shape
area to perimeter ratio
What is an ideal shape for a reserve
a circle because the inside is protected much more and minimizes area exposed to threats
What kind of edge is easiest to enforce
straight edges
Which is better, several small or one large MPA?
It is debatable but the general idea is a network of several small
What is the benefits of one large MPA
protecting lots of habitat
large area
bigger populations
large species coverage
less cost
problems with large MPAS
socioeconomic conflicts
resident self-replenishing population
sensitive to habitat changes from outside stressors

does not have as much interaction with other populations, so it relies upon its resident population for replenishment
what is important in considering resident self-replenishing populations
protecting the right area

ex: pacific and altantic overfish shell spps
Migratory self-replenishing populations
have significant transfer with outside and inside MPAs

requires more of the population to be protected in order to see recovery
ex of protecting a migratory self-replenishing population
atlantic cod:

less than 40% --> no prevent collapse
50 - 60% ---> slow collapse
80% --> helped protect
Ontogenetically disjunct populations
Age classes live in different locations

protect dispersal cooridors and habitat for feeding and spawning grounds
Ex of trying to protect ontogentic disjunt population
Nassau grouper in Mexico

the spawning ground was protected, but fishing intensity was allowed to increase on the coordidor and with more specialized gear. As a result the grouper would not make it to the spawning ground and moved it before the cooridor
Metapopulation
population of populations
interact with each other
larval dispersal and migration
rescue effect
one population gives surplus to another with too little
Source
increased quality in habitat increase population and surpluses
Sink
receives recruits

lower quality habitat
Important of source and since habitats
if the source is harmed, so will be the sinks
Explain the ex of puerto penacasa, gulf of california
Fishermen helped set up a network of protected area for scallops and black murex in 2002. They used science advice.

One set up where they were abundant, one where moderately abundant, one heavily fished

2004 increase benefits and populations

2007 rights given to local fishermen
restoration
the act of returning something to its original state or fixing something that is damaged
problems with def of restoration
what we determine is an "original form"
what is a consequence and problem with restoration
that it is used to justify approving destructive actions
goal of restoration
to replace what's been lost
4 approaches to restoration
indiv sp
group of interacting orgs
ecosystem
interconnected biotopes
top 5 reasons for marine conservation
1. pollution
2. overfishing
3. habitat loss
4. invasive species
5. global climate change
What is the aim of maximum sustainable yield
the acheive the maximum amount of resource extraction without depleting the resources from one harvest to the next
what is the aim of ecosystem based management
harvest to minimize the impact on ecosystems and ecological processes
what is terrestrial conservation driven by?
reactive management
Why do ecosystem based management
better value: cost is approximatley same for single spps vs an entire system

single species closure does not work because the cause of decline is rooted in the effort to catch other spp

Ecosystem takes into account species that are ecological important but may not be as important to fisheries

Lack of knowledge in single sp biology makes it hard to conserve because we do not know the ecological processes that will lead to their recovery
Definition of MPAs
any area of intertidal or subtidal terrain together with its overlying water and associated flora, fauna, historical, and cultural features, which has been reserved by law or other effective means to protect part of all of the enclosed environment
Who typically has the authority for enforcement in MPAs
managing government agency
Difference between mpas and reserves
MPAs will allow activities but not in reserves
How many MPAs and what area of the world do they cover
4500 MPAs
0.5 to 0.6 % of ocean
size of Lake Victoria
Why MPAs?
1. example of important habitats and ecosystems
2. need in order to sustain fisheries
3. increase species diversity
4. location of increased biological activity
5. natural wonder = tourism
6. critical habitat for particular species
7. cultural value
8. protects the coasts from storms
9. facilitates research to create baseline conditions
McClanahan 1999 on effectiveness of MPAs
most MPAs are small and 9% are adequately managed
McArdle 1997 on mpa effectiveness
protection is variable
less than 0.2 percent is closed to all forms of fishing
little enforcement
Marine reserves
an area of the sea in which all consumptive and extractive uses are prohibited and other human interference is minimized as much as possible
coverage of mpas
0.01% which is 1/2 the area of lake victoria
Marine reserves and science
they are being set up but not studied
what is the goal of marine reserves
increase abundance and diversity of marine life inside the reserve
Spillover effect
when competition is high within the reserve, then there will be a spill over of adults into adjacent waters which are allowed for fishing

there is also a larval spillover effect with larval being transported out of the reserve
marine reserves and bofffs
by being protected it increases bofffs
Ecological benefits of MRs
1. increase in size of indv
2. increase in numbers
3. larval export benefits other areas
4. spillover of adults
5. decrease catch per unit effort
6. habitat changes for better ecosystem
7. community effects (increase biod)
8. synergistic effects (increased resilience)
examples of how MPAs increase size of indiv
Exuma Cays Land and Sea Park in the Bahamas
increased biomass of nassau grouper and conch

Jardines de la Reina in Cuba and Glover's Reef in Belize

increase biomass inside and outside for lobsters and fish

Soufriere marine management area in St. Lucia
increased catch per unit effort
What area is evidence for the spillover effect
Apo Island Phillipines
Evidence for mpas changing habitat
decrease in algae in Tasmania

Anacapa Island Reserve, CA
reserve regulated urchins and increased kelp
evidence for synergistic effects
increased post-bleaching recovering in the Caribbean because of parrotfish
Which species resonds the most to mpas
large target spp but it is slow to see
do all species benefit from mpas?
no because are preyed upon more
Social and economic benefits of mpas
reserve money is a subsidy for fisheries

tourism

cultural value preserved

increased fish for fisheries

research
Time for effect depends upon
available breeding adults
growth rates
age
number and timing of spawning
proximity of source population to reserve
interactions
human impacts
level of enforcement
Factors that increase marine reserve success
-size
-space
-larval availability
-clear goals
-support from institutions and legislation to create enforcement
-support community decision-making
-involve people with diverse interests
-include science advice
-conflict resolution measures
-sustainable finance
-fishermen need alternate source of income
-equitable share in economic profits
-fair enforcement
Explain the cascading effects seen in Anacapa Marine reserve
Lobsters increased as a consequence of the reserve and were able to eat urchins, keeping kelp plentiful
what are the 3 main benefits of marine reserves
increase size, abundance, and biomass
explain ban and vincent's concept of fishing areas
designate areas where fishing is allowed
5 challenges to designating a fishing permitted area
understanding the connectedness of fish and unfished areas

current fisheries could gain little benefit

Accounting for outside effects

designating fishing areas could make people not want to conserve anymore habitat

if fishing areas will be more successful than current reserves
4 benefits of a global mpa as described by Balmford
keep global fisheries catch sustainable
sustain ecosystem services
global mpas created for less than the current subsidies
create 1 million jobs
Ecological restoration
act of returning to its original state
fixed something that is damaged
return to supposed original form
remember shifting baseline syndrome
k
Problems concerning ecosystem restoration
assume things can be repaired
implies we fully understand all ecological processes
policy makers use it as a means to justify destructive actions
Look @ coral reefs table in reading
done
transplanting and reattachement
following a disturbance dislodged organisms are replaced
where is transplantation and reattachment successful
in areas of limited larval supply
high recruit mortality
and where large coral frags are available

success limited
coral cultivation and larval seeding
experimental bioassays used to monitor and grow coral in aquarium

usually uses brooders that realease fully developed planuae
artificial reef benefits
coastal protection
fishing enhancement
diving attraction
wave break
questions for artificial reef creation
what materials are suitable for recovery

will structure leach metals and toxins

will structure cause further damage

will aggregating species be exploited?
EXs of artificial reefs
reef balls
electromagnetics
wrecks and piers
What types of organisms recover fastest in reserves?
short-lived fast regenerating species

longer life histories take a longer period of time
Relate size of reserves and population recovery
Larger reserves will have a higher probability of protecting more self-sustaining populations
What is a problem with population persistence in marine reserves
it is unknown for many spp how many offspring are retained locally
What is he problem with CPUEs
They are insensitive to exploitation
Unique about seamount species
high endemism
What is a problem for epipelagic reserves
who protects the marine reserve if it is international waters