| Higher code |
Biotope Code |
Stability |
Key References |
| LR |
|
|
|
| LR.L |
YG |
STABLE |
|
| LR.L |
Pra |
Seasonally variable |
Hawkins and Hartnoll, 1983 |
| LR.L |
Ver |
STABLE |
|
| LR.L |
Ver.Por |
Porphyra fluctuates seasonally |
|
| LR.L |
Ver.B |
Stable |
|
| LR.L |
Ver.Ver |
Stable |
|
| LR.L |
Chr |
Seasonally variable |
|
| LR.L |
Bli |
Seasonally variable |
|
| LR.L |
UloUro |
Stable, can die off if dried out in summer |
|
| ELR |
|
|
|
| ELR.MB |
MytB |
Locally unstable, but assemblage persistent at
100m-km scale |
Lewis, 1976, 1977 |
| ELR.MB |
Bpat |
Generally stable, occasional escapes of fucoids |
Southward and Southward, 1978 |
| ELR.MB |
Bpat.Cht |
STABLE |
Connell and Sousa, 1983 |
| ELR.MB |
Bpat.Lic |
STABLE |
|
| ELR.MB |
Bpat.Cat |
STABLE |
|
| ELR.MB |
Bpat.Fvesl |
Some local instability but mosaic
persistent on larger scale |
| ELR.MB |
Bpat.Sem |
Stable, but occasional Fucus escapes on
horizontals |
|
| ELR.FR |
|
Stable but rare (Scotland and Ireland only) |
Powell, 1957 |
| ELR.FR |
Fdis |
|
|
| ELR.FR |
Coff |
STABLE - occasional small scale disturbance
events |
|
| ELR.FR |
Him |
Can fluctuate seasonally with the
growth of Himanthalia. Himanthalia also varies between years |
| MLR |
|
|
|
| MLR.BF |
|
|
|
| MLR.BF |
PelB |
Stable, but Pelvetia can suffer from
occasional hot summers |
Schonbeck and Norton, 1978 Hawkins and Hartnoll,
1985 |
| MLR.BF |
FvesB |
|
|
| MLR.BF |
Fser |
Locally very variable, can swing to barnacles
only |
|
| MLR.BF |
Fser.R |
Generally stable. Cover fluctuates seasonally,
but not much year to year variation |
Hawkins and Hartnoll, 1983 |
| MLR.BF |
Fser.Fser |
as Fser.R |
|
| MLR.BF |
Fser.Fser.Bo |
as Fser.R |
|
| MLR.BF |
Fser.Pid |
Piddocks vulnerable to cold water extremes |
Crisp, 1964 |
| MLR.R |
|
|
|
| MLR.R |
XR |
Stable at functional group level, but
individual species fluctuate a lot |
| MLR.R |
Pal |
Can fluctuate a lot. Palmaria colonizes
disturbed areas |
Hawkins and Harkin, 1985 |
| MLR.R |
Mas |
Stable |
|
| MLR.R |
Osm |
Patches stable |
|
| MLR.R |
RPid |
Piddocks vulnerable to cold water extremes |
|
| MLR.Eph |
|
|
|
| MLR.Eph |
Ent |
Seasonally unstable, unstable in the longer term |
|
| MLR.Eph |
EntPor |
Very unstable, seasonal fluctuations |
Hawkins and Hartnoll, 1983 |
| MLR.Eph |
Rho |
Quite stable |
|
| MLR.MF |
|
|
|
| MLR.MF |
MytFves |
Localised dynamic patches |
|
| MLR.MF |
MytFR |
Moderately stable |
|
| MLR.MF |
MytPid |
Unknown |
|
| MLR.Sab |
|
[NB: MLR.Sab is not within the remit of this
Review] |
|
| MLR.Sab |
Salv |
Fluctuate, individual reefs unstable
with a 3-4 year turnover. Reef positions may move. |
| SLR |
|
|
|
| SLR.F |
Pel |
STABLE |
|
| SLR.F |
Fspi |
STABLE |
|
| SLR.F |
Fves |
STABLE |
|
| SLR.F |
Asc |
Very STABLE |
|
| SLR.F |
Asc.Asc |
Very STABLE |
|
| SLR.F |
Asc.T |
STABLE |
|
| SLR.F |
Asc.VS |
Unknown |
|
| SLR.F |
Fserr |
|
|
| SLR.F |
Fserr.T |
Seasonal fluctuations, moderately stable |
|
| SLR.F |
Fserr.VS |
Moderately stable |
|
| SLR.F |
Fcer |
Stable |
|
| SLR.FX |
|
|
|
| SLR.FX |
BLlitt |
Unstable |
|
| SLR.FX |
FvesX |
Stability of the community depends on
the stability of the substratum |
| SLR.FX |
AscX |
As FvesX |
|
| SLR.FX |
AscX.mac |
As FvesX |
|
| SLR.FX |
FserX |
As FvesX |
|
| SLR.FX |
FserX.T |
Moderately stable. All F. serratus
biotopes tend to show seasonal patterns |
| SLR.FX |
EphX |
Highly variable |
|
| SLR.FX |
FcerX |
Unstable |
|
| SLR.MX |
|
|
|
| SLR.MX |
MytX |
Locally unstable, but predictable on a wider
scale |
|
| LR.Rkp |
|
|
|
| LR.Rkp |
G |
Seasonally variable |
|
| LR.Rkp |
Cor |
STABLE |
|
| LR.Rkp |
Cor.Par |
|
|
| LR.Rkp |
Cor.Bif |
STABLE |
|
| LR.Rkp |
Cor.Cys |
|
|
| LR.Rkp |
FK |
STABLE |
|
| LR.Rkp |
FK.Sar |
Seasonal fluctuations |
|
| LR.Rkp |
SwSed |
Variable/Unstable |
|
| LR.Rkp |
H |
Variable/Unstable |
|
| LR.Ov |
|
|
|
| LR.Ov |
RhoCv |
Stable |
|
| LR.Ov |
SR |
Stable |
|
| LR.Ov |
SByAs |
Stable |
|
|
|
|
|
|
|
Note: Cladophora rupestris
assemblages can be very stable |
| Comments on other types |
|
|
| EIR |
|
|
|
| EIR.KFaR |
Ala |
Local disturbance by storms but rapid
recolonization |
|
| EIR.KFaR |
Ala.Myt |
|
|
| EIR.KFaR |
Ala.Ldig |
Some variability - Alaria colonizes
disturbance patches |
|
| MIR.KR |
|
|
|
| MIR.KR |
Ldig |
Stable |
|
| MIR.KR |
Ldig.Ldig |
Stable |
|
| MIR.KR |
Ldig.Ldig.Bo |
Stable |
|
| MIR.KR |
Ldig.T |
Stable |
|
| MIR.KR |
Ldig.Pid |
Stable |
|
| SIR.K |
Lhyp.L.sac |
Laminaria saccharina shows annual
fluctuations |
|
