Grimsditsch et al Pemba Resilience Survey 2009 low res
Grimsditsch et al Pemba Resilience Survey 2009 low res.pdf
Grimsditsch et al Pemba Resilience Survey 2009 low res.pdf
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D<strong>et</strong>ailed Results<br />
Density 250m2<br />
200<br />
180<br />
160<br />
140<br />
120<br />
100<br />
80<br />
60<br />
40<br />
20<br />
0<br />
Mis<strong>al</strong>i<br />
Fundo Outer<br />
Simba<br />
Mandela<br />
Kokota<br />
Paradise<br />
Manta<br />
Njao Gap<br />
The Hole<br />
Swiss<br />
Grazers/d<strong>et</strong>ritivo<strong>res</strong><br />
Sm<strong>al</strong>l excavators<br />
Scrapers<br />
Large excavators<br />
Grazers<br />
Brow sers<br />
Msuka Bay<br />
Fundo Lagoon<br />
Fundo Inner<br />
Herbivorous Fish Densities<br />
This bar graph shows only densities for<br />
herbivorous function<strong>al</strong> groups. Mis<strong>al</strong>i, the notake<br />
zone, has the highest fish densities, and<br />
especi<strong>al</strong>ly high numbers of browsers (mostly<br />
Kyphosidae – chubs). It <strong>al</strong>so has higher<br />
numbers of sm<strong>al</strong>l excavators (Scaridae –<br />
certain species of parrotfish) than other sites,<br />
so these groups seem to be recovering well<br />
with the no-take zone. Fundo Outer <strong>al</strong>so has<br />
high fish densities compared to other sites.<br />
However, this is mostly driven by higher<br />
numbers of Lutjanidae (snappers) and<br />
L<strong>et</strong>hrinidae (emperors) that are both<br />
predators. Fundo Outer <strong>al</strong>so has higher<br />
densities of scrapers (Scaridae – certain<br />
species of parrotfish) than other sites probably<br />
due to its larger distance distance from shore<br />
and consequent <strong>low</strong>er fishing p<strong>res</strong>sure.<br />
Msuka Bay, Fundo Lagoon and Fundo Inner<br />
have the <strong>low</strong>est fish densities.<br />
Msuka Bay<br />
Fundo Lagoon<br />
Transform: Square root<br />
Resemblance: S17 Bray Curtis similarity<br />
2D St<strong>res</strong>s: 0.11 Similarity<br />
The Hole<br />
80<br />
Manta<br />
Kokota<br />
Fundo Outer<br />
Mandela<br />
Njao Gap<br />
Simba<br />
Paradise<br />
Mis<strong>al</strong>i<br />
Swiss<br />
Sites and fish community composition<br />
In the Multi-Dimension<strong>al</strong> Sc<strong>al</strong>ing, Mis<strong>al</strong>i is an<br />
outlier due to the high densities of browsers,<br />
while Fundo Lagoon is an outlier due to<br />
over<strong>al</strong>l <strong>low</strong> densities of fish, <strong>al</strong>though relatively<br />
high densities of scrapers. Msuka Bay and<br />
Fundo Inner form an outlying group due to<br />
their <strong>low</strong> fish densities.<br />
Fundo Inner<br />
Transform: Square root<br />
Resemblance: S17 Bray Curtis similarity<br />
2D St<strong>res</strong>s: 0.11<br />
Browsers<br />
Browser Density in Mis<strong>al</strong>i<br />
Msuka Bay<br />
Fundo Lagoon<br />
The Hole<br />
Manta<br />
Kokota<br />
Mandela<br />
Njao Gap<br />
Paradise<br />
Fundo Outer<br />
Simba<br />
Mis<strong>al</strong>i<br />
20<br />
80<br />
140<br />
200<br />
The two bubble plots show the high densities<br />
of browsers (top plot) and sm<strong>al</strong>l excavators<br />
(bottom plot) that distinguish Mis<strong>al</strong>i, the notake<br />
zone. The family making up the most<br />
number of browsers in Mis<strong>al</strong>i are Kyphosidae,<br />
or chubs.<br />
Swiss<br />
Fundo Inner<br />
Fundo Lagoon<br />
The Hole<br />
Manta<br />
Kokota<br />
Mandela<br />
Transform: Square root<br />
Resemblance: S17 Bray Curtis similarity<br />
2D St<strong>res</strong>s: 0.11 Sm<strong>al</strong>l excavators<br />
Fundo Outer<br />
0.7<br />
2.8<br />
Msuka Bay<br />
Njao Gap<br />
Paradise<br />
Simba<br />
Mis<strong>al</strong>i<br />
4.9<br />
7<br />
Swiss<br />
Fundo Inner<br />
29
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