|
Table
7.3a Existing Information Reviewed for Ecological Value Assessment
|
|
Habitat
Type
|
Indicative
Ecological Value
|
Existing
Information |
Habitat
Location(s)
|
Ecological
Value after Assement against Existing Information
|
Remarks
|
| Fung
Shui Forest |
High
|
Zhuang
and Corlett (1997)
|
13
sites but grid locations or exact boundaries of study area unknown |
N/A (Not
Applicable)
|
Information
not applicable for the purpose of this study. |
|
Chu (1998)
|
98
grid locations and 17 sites with known boundaries |
High
|
No
adjustment in ecological value. |
| Montane
Forest |
High |
Zhuang
and Corlett (1997)
|
Tai
Mo Shan and Sunset Peak but exact locations and areal extent
unknown |
N/A
|
Information
not applicable for the purpose of this study. |
| Lowland
Forest |
High |
Kwok
(1996) |
Tai
Po Kau Nature Reserve |
High
|
No
adjustment in ecological value. |
| Corlett
(1997) |
No
specified locations |
N/A |
Information
not applicable for the purpose of this study. |
| Zhuang
and Corlett (1997) |
Hillsides
in the New Territories, on Lantau Island and Hong Kong Island
but exact locations and boundaries unknown |
N/A |
Information
not applicable for the purpose of this study. |
| Corlett
et al (2000) |
No
grid locations or specified boundaries |
N/A
|
Information
not applicable for the purpose of this study. |
| Freshwater/
Brackish Wetland |
High |
Dudgeon
and Chan (1997) |
28
freshwater wetlands with grid locations |
High
|
No
adjustment in ecological value. |
| Lau
MWN (1998) |
165
locations of amphibian habitats |
N/A |
Information
not applicable for the purpose of this study but locations of
the Romer 's Tree Frog were extracted from the HKU Biodiversity
CD-ROM dataset as a separate layer in the CASET. |
| Natural
Watercourse |
High
|
Kan
(1974) |
Lam
Tsuen River and Shatin Stream |
N/A |
Information
not sufficiently up to date. |
| Chan(1980) |
Streams
entering Tolo Harbour |
N/A |
Information
not sufficiently up to date. |
| Dudgeon
(1981) |
Tam
Tsuen River |
N/A |
Information
not sufficiently up to date. |
| Hodgkiss
and Chan (1983) |
Streams
in inner Tolo Harbour |
N/A |
Information
not sufficiently up to date. |
| Dudgeon
(1984) |
Tam
Tsuen River |
N/A |
Information
not sufficiently up to date. |
| Chong
and Dudgeon (1992) |
Tai
Ho Stream |
High* |
Also
one of the survey sites for Natural Watercourse (Site 164) and
ecological value was assessed as high* (see Section 7.1.6 and
Annex G for details). |
| Chong
(1993) |
Tai
Ho Stream |
High* |
As
above. |
| Dudgeon
and Corlett (1994) |
No
grid locations or specified boundaries |
N/A |
Information
not applicable for the purpose of this study. |
| Wilson
(1992) |
Sha
Lo Tung |
High |
The
site was confirmed as an important habitat for dragonfly and
therefore the area (within the Sha Lo Tung SSSI) was upgraded
to high ecological value. |
| Wilson
(1995) |
All
over Hong Kong |
N/A |
Information
not applicable for the purpose of this study. |
| Wilson
(1997a) |
Sha
Lo Tung and Tai Tong |
High |
Sha
Lo Tung was confirmed as an important habitat for dragonfly
and therefore the area (within the Sha Lo Tung SSSI) was upgraded
to high ecological value. Tai Long is one of the survey sites
for Natural Watercourse (Site 164a) and ecological value was
assessed as high (see Annex G for details). |
| Wilson
(1997b) |
Various
locations |
High |
Various
locations were identified as important dragonfly habitats. Sha
Lo Tung is one of the identified sites but has most of its area
mapped as Cultivation and thus ranked as of medium ecological
value. The area was upgraded to high. |
| Dudgeon
D (pers comm, May 1999), Food and Environmental Hygiene Department
(fax dated 17 June 1999) |
Oiled
for mosquito control |
Low |
Ecological
value was downgraded to low (see Section 7.3.1). |
| Mangrove |
High |
Tam
and Wong (1997) |
Locations
of 43 mangroves with 23 being studied in details. |
N/A |
As
discrepancies were detected between the results from Tam and
Wong (1997) and the present baseline survey (see Sections 7.1.7
and 7.3.4), the literature was not used for ecological value
assessment. |
| Seagrass
Bed |
High |
SWIMS
(1994) |
Tung
Chung |
High |
No
adjustment in ecological value. |
| Fong
( 1998a) |
Various
locations |
High |
No
adjustment in ecological value. |
| Fong
( 1998b) |
Various
locations |
High |
No
adjustment in ecological value. |
| Fong
et al (1998) |
Lai
Chi Wo |
High |
No
adjustment in ecological value. |
| |
|
AFCD
Herbarium (1999) |
Various
locations with marked boundaries |
High |
No
adjustment in ecological value. |
| Intertidal
Mudflat |
|
Morton
and Morton (1983) |
Shui
Hau, South Lantau |
N/A |
Information
on not sufficiently up to date. |
| Chan
(1990) |
Mai
Po Marshes |
N/A |
A
species-based study (mudskippers) and therefore not used for
ecological value assessment. |
| Choi
(1991) |
Mai
Po Marshes |
N/A |
A
species-based study (fiddler crabs) and therefore not used for
ecological value assessment. |
| McChesney
(1997) |
Mai
Po Marshes |
High |
No
adjustment in ecological value. |
| Chiu
and Morton (1999) |
Shui
Hau, South Lantau |
High |
No
adjustment in ecological value. |
| Chiu
and Morton (1999) |
Pak
Nai (Deep Bay) and San Tau (North Lantau) |
High |
No
adjustment in ecological value. Both Pak Nai (Sites 89 and 90)
and San Tau (Site 94) are also survey sites for Intertidal Mudflat
(see Annex G for details). |
| Fishpond/
Gei Wai |
Medium
|
Melville
and Morton (1983) |
Mai
Po Marshes |
N/A |
Information
not sufficiently up to date. |
| Irving
and Morton (1988) |
Mai
Po Marshes |
N/A |
Information
not sufficiently up to date. |
| Young
(1993) |
Mai
Po Marshes Nature Reserve |
High |
Fishponds
of the Mai Po Marshes Nature Reserve are important feeding habitats
for herons and egrets and therefore their ecological value was
upgraded to high. |
| Chu
(1995) |
Inner
Deep Bay Fishponds (within Wetland Conservation Area) |
High |
Inner
Deep Bay fishponds within the Wetland Conservation Area were
recognised as of unique ecological importance to herons and
egrets and therefore their ecological value was upgraded to
high. |
| Young
(1997) |
Deep
Bay Fishponds (Wetland Conservation Area) |
High |
Deep
Bay fishponds within the Wetland Conservation Area were recognised
as of unique ecological importance to herons and egrets and
therefore their ecological value was upgraded to high. |
| Young
and Chan (1997) |
Mai
Po Marshes (part of the Wetland Conservation Area) |
High |
Fishponds
within the Mai Po Marshes were considered as of high importance
to wintering waterbirds and therefore their ecological value
was upgraded to high. |
| TPB
(1999) Aspinwall (1997) |
Wetland
Conservation Area |
High |
Fishponds
within the Wetland Conservation Area were recognised as of unique
ecological importance to herons and egrets and therefore their
ecological value was upgraded to high. |
| Sandy
Shore |
Medium
|
Morton
and Morton (1983) |
Sai
Kung PeninsulaTai Long Wan |
N/A |
Information
not sufficiently up to date. Beaches at Sai Kung Peninsula (Site
128) and Tai Long Wan (Site 130) are survey sites for Sandy
Shore (see Annex G for details). |
| Shin
(1987) |
South
of HK Island |
N/A |
Information
not sufficiently up to date. |
| Wong
(1990) |
South
of HK Island Sai Kung Peninsula Long Ke Wan Tong Fuk Miu Wan |
Medium |
No
adjustment in ecological value based on this literature but
Tong Fuk Miu Wan (Site 126) was assessed as of high ecological
value based on field survey results (see Section 7.1.14 and
Annex G for details). |
| Choi
(1992) |
Hoi
Ha Wan |
High |
Ecological
value was upgraded to high as the beach harbours a wide variety
of intertidal crabs (see Section 7.3.2). |
| Morton
(1992), McGilvray and Geermans (1997), AFCD (1999) |
Sham
Wan, South Lamma |
High* |
Sham
Wan is the only known nesting site for green turtles and therefore
its ecological value was upgraded to high* (see Section 7.3.2). |
| Binnie
(1994) |
To
Kau Wan |
N/A |
Natural
sandy shore studied has been reclaimed. |
| Ong
Che and Morton (1994) |
Sand
flat at Tai Tam |
Medium |
No
adjustment in ecological value. |
| Morton
et al (1996), AFCD (memo dated 3 December 1998) |
41
Gazetted beaches |
Low |
Habitats
are very likely to be regularly disturbed by visitors and thus
support much lower assemblage diversity and abundance than natural
shores, therefore their ecological values were downgraded to
low (see Section 7.3.2) |
| Rocky
Shore |
Medium
|
Jiang
and Zhou (1992) |
Tolo
Harbour |
Medium |
No
adjustment in ecological value. |
| Wadpole
(1985) |
Chung
Hum Kok |
N/A |
Information
not sufficiently up to date. |
| Liu
(1992) |
Hoi
Ha Wan |
Medium |
No
adjustment in ecological value. |
| Binnie
(1994) |
To
Kau Wan |
N/A |
Natural
rocky shore studied has been reclaimed. |
| Morton
and Harper (1995) |
Cape
d'Aguilar |
High |
Ecological
value was upgraded to high because of the presence of an intertidal
rock pool that is lined with corals (see Section 7.3.3). |
| Kaehler
and Williams (1996) |
Hok
Tsui Peninsula |
N/A |
A
species-based study and therefore not used for ecological value
assessment. |
| Kennish
et al (1996) |
Hok
Tsui Peninsula |
N/A |
A
species-based study and therefore not used for ecological value
assessment. |
| |
|
Cornish
and McCorry (1998) |
Ping
Chau,
Mirs Bay |
High |
Ecological
value was upgraded because of the presence of intertidal corals
(see Section 7.3.3). |
| Babtie
(1999) |
Green
Island |
Medium |
No
adjustment in ecological value. |
| ERM
(1999a) |
Lamma
Island |
Medium |
No
adjustment in ecological value. |
| |
|
ERM
(1999b) |
Black
Point, Hei Ling Chau and Shek Kwu Chau |
Medium |
No
adjustment in ecological value. |
| ERM
(Unpublished data) |
Lo
Chau, Po Toi and Tai A Chau |
Medium |
No
adjustment in ecological value. |
| Scott
Wilson (2000) |
North
Lantau |
Medium |
No
adjustment in ecological value. |
| Artificial
Rocky/ Hard Shoreline) |
Low
|
Huang
et al (1992) |
Wu
Kai Sha Pier, Wong Shek Pier and Ping Chau Pier |
Low |
No
adjustment in ecological value. |
| Jiang
and Zhou (1992) |
Tolo
Harbour |
Low |
No
adjustment in ecological value. |
|