Change over time in the British Isles

Includes explains of succession and development of the different types of sere's, diagrams and a case study on management of an area.

HideShow resource information
Preview of Change over time in the British Isles

First 1034 words of the document:

Ecosystems in the British Isles ­ Change through time
Key
Wo r
ds :
Sere ­ a
p lant
success ion
Seral progression ­ t
h e
mo ve f
rom one ser
e to
another
Seral stage ­ a stage w i
thin
a ser
e
Climatic climax vegetation ­
the veget
ati
on t
h at
i
s t
houg ht
t
o evol
ve i
n a
cli
mate
regi
on i
f t
h e seral
progre ssi
on i
s not
i
nter
rupted by
huma n act
ivi
t
y,
tectoni
c
processes ,
impe ded
d r
a inage et
c.
(t
heory)
Dominant plant ­ t
he large st
,
mo st
complex
a nd
tal
lest
speci
es present
i
n t
he
commu n i
ty
Prisere ­ the wh ol
e proc ess
fr
om a
pioneer
commu n i
ty
to
the
cli
ma x
vegetat
ion
Vegetation succession
Ecosys t
e ms evol
ve
over
ti
me
the i
nteract
ions
w i
thi
n
the
eco syst
em affect
each ot
her.
T he obvi
ous wa y
in
w hi
ch t
he se
chan ges
can
be seen i
s t
hrough progressi
ve
de v el
opme nt
o f
t
he vegetat
ion commu nit
y i
n the
en vi
ronme nt
,
kno wn as
a sere.
V eg etat
ion at
each st
age i
s know n
as a st
age
st
1 stage i
n sere
in
an area i
s cal
led
the pi
one er
commu nit
y.
D evelops
o n
new l
y
ex p osed sur
face:
o A f
ter
volcanic
erupti
on ­
leading
to l
it
hosere
o S and ­
leading
to psammo rsere
o We t
,
salt
y surf
ace ­ hal
osere
o F r
e shwater
we t
land
­
hydrosere
Cl
ima ti
c cli
ma x
veg et
ati
on theory
stages:
I nitial
s st
ag es
o S urface
b ecomes coloni
sed by a
sma l
l
n umb er
of
species,
normall
y ones t
hat ar
e
p art
icul
arl
y adapted t
o the
cond i
ti
on
o S pe ci
es gr
a dual
ly
chan ge
and
thi
s al
lows new
plant
s to
invade and devel
op a
n ew
sere
E a ch st
age
has a dominant
plant
in
the commu nit
y and i
s name s
aft
er t
hat.
P o ssi
b l
y af
ter
1000 '
s of
years
the
cli
ma ti
c cl
imax commu nit
y develop
o V eg et
ati
on
is
comp l
etely
adapted t
o cl
ima t
e and l
it
tl
e change i
n commu ni
ty
o U su al
ly
layer
ed
w i
th
domi nant
species
she l
ter
ing
lowe r
sub dominant
species,
e ven l
ow er
l
a yer
s shrubs,
grasses
e t
c.
G r
o und
level
plant
s survi
ving
in
eq ui
li
bri
um
w it
h each ot
h er
,
w i
th t
he cl
imate,
soil
and ani
ma l
li
fe
that
ther
e
is.
H o w ever
, condi
ti
on s
rar
e l
y st
ay st
ab l
e enough f
o r
cl
imati
c cl
ima x
commu ni
ty
to
de v el
op. Due t
o tect
onic
an d
erosion,
but
huma n processes
a r
e t
h e
w or
st.
T he si
mp l
e i
de a
of
p r
iser
e processi
n g
fr
om bare
surface
to cl
i
ma ti
c cl
imax
co mmu nit
y has
b een
ad apt
ed
to
take i
nto
a ccount
the
vari
o us
int
errupti
on t
hat
ca n
oc c ur

Other pages in this set

Page 2

Preview of page 2

Here's a taster:

Plagioclimax community:
Thi
s
is
w her
e t
he
resul
tant
communi
ty
has
been
perma nen t
l
y
inf
luenced
by
huma ns.
For examp l
e,
by
burning
or gr
azing.…read more

Page 3

Preview of page 3

Here's a taster:

I
s one
of
the
maj
or
component
s of
t
he
veget
ati
on
on
the
Bri
ti
sh
Isl
e,
especi
all
y i
n t
he
upl
and ar
eas.
From Oak Trees to Heather Moorland:
1. Aft
er
the I
c e Age the pr
ima ry
su ccessi
on t
o heat
h er
moo r
land occ ur
red.
2. Huma ns cleared t
he trees
for
fa r
ming.…read more

Page 4

Preview of page 4

Here's a taster:

Steam fl
ow s
int
o shal
low
pon ds
or
lakes s edimen t
s e nri
ches wat
er wi
th
nutr
ient
s a l
gae and mo sses
start
t
o grow w at
er
li
li
es,
pond weed and submerged
plant
s t
hey die
enri
ch
be d lit
tl
er
coverage no oxygen,
no decomposit
ion p l
eat
buil
d bui
lds w ater
beco mes shall
ow bulr
ush es
,
sedges and
reed gr…read more

Comments

No comments have yet been made

Similar Geography resources:

See all Geography resources »See all resources »