Securing Biodiversity in Breckland - European Commission

More documents

Recommendations

Info

Breckland Species AssemblagesRequirements of Dry Terrestrial AssemblagesDisturbance and Intensive Grazing GuildThe results of the compilation of Breckland conservation priority species and analysis of theirrequirements has confirmed what people have long expected – that Breckland is vitally important foran assemblage of plant and invertebrate species dependent on intensely grazed and disturbedhabitats, particularly species of coastal or dune habitats. For the first time, this has been quantified.149 species require open habitats with both disturbance and grazing, including the sub-guild thatalso require associated scrub. However, it should be noted that individual species within this guildare associated with varying intensities and frequencies of physical disturbance (see Table 21).The species of this disturbance and grazing guild include many beetles (30 species, 23% of the guild).Invertebrate species in this guild are often closely associated with ruderal plants or other plantspecies both requiring disturbance and being tolerant of grazing. For example, species of flea beetlein the genus Longitarsus are associated with ragwort Senecio spp. (e.g. Longitarsus dorsalis,Longitarsus ganglbaueri), hound's-tongue and viper's-bugloss (Cynoglossum officinale, Echiumvulgare - Longitarsus quadriguttatus) and mullein (Verbascum spp. - Longitarsus tabidus). Otherrarely considered species in this guild, include a number of Diptera and the cylindrical whorl snail(Truncatellina cylindrical, RDB: VU and BAP).Many of species in this guild are indicators of a community with areas of bare ground and a lichenand moss dominated turf, associated with rabbit grazing. Lichens are particularly important inBreckland and 42% of the priority lichen species occur in this guild, more than in any other (excludingthe unassigned species). These lichen species include the scrambled egg lichen Fulgensia fulgens, thestarry breck lichen Buellia asterella and many priority species in the genus Cladonia. Consequently,this guild contains many species associated with the lichen community, such as the cylindrical barkbeetle, Orthocerus clavicornis (Notable: B), which is associated with Peltigera lichens.Hemiptera are also well represented in this guild with 16 species, 12% of guild (Figure 29). Thesespecies often require specific plant species, for example the Breckland specialists squashbugArenocoris waltlii (Hemiptera), and the weevil Hypera (Antidonus) dauci, both of which feed oncommon stork's-bill Erodium cicutarium.The open, disturbance and intensive grazing guild shows Maidscross Hill (TL7282) to be a key site,containing 29 species recorded from this guild. Other key hotspots include; RAF Lakenheath, WeetingHeath, Grimes Grave, the Icklingham triangle area, Red lodge, Wangford and Eriswell Low Warrens.122
Figure 24. Number of Breckland conservation priority species from in the open disturbance and intensivegrazing guild (DIST+GRAZ) guild in each of the 1 km grid squares in the Breckland region. There are 136species in this guild. Species requiring these conditions plus scrub were excluded. White indicates areas forwhich no records were obtained.123
Page 1 and 2:
Securing Biodiversityin BrecklandGu
Page 3 and 4:
Commissioning GroupNeil Featherston
Page 5 and 6:
Wind-blown sand guild .............
Page 7 and 8:
milder winters and increased winter
Page 9 and 10:
Creating broad ruderal and disturbe
Page 11 and 12:
Introduction“Few of the lowland d
Page 13 and 14:
Inland DunesThe 1km wide dune and b
Page 15 and 16:
Following the Black Death of the mi
Page 17 and 18:
The area of grass-heath declined by
Page 19 and 20:
PingosPingos are ground water fed p
Page 21 and 22:
Breckland Conservation and the Need
Page 23 and 24:
SSSI. The Breckland Forest SSSI cit
Page 25 and 26:
The Breckland Biodiversity Audit ha
Page 27 and 28:
The Breckland bio-geographic region
Page 29 and 30:
polygons of alternating calcareous
Page 31 and 32:
quality calcareous fen communities
Page 33 and 34:
Figure 2. The extent of Breckland,
Page 35 and 36:
Table 3. Grass-heath vegetation in
Page 37 and 38:
The Conservation Resource: Designat
Page 39 and 40:
All other SSSIs are less than 600 h
Page 41 and 42:
GrasslandHeathWoodlandWetlandFlowin
Page 43 and 44:
Calcicolous grasslandsShingle, stra
Page 45 and 46:
Figure 4. Location of designated si
Page 47 and 48:
Figure 6. Location of Plantlife’s
Page 49 and 50:
Figure 7. Locations of stations in
Page 51 and 52:
Scheme for Stilt & Stalk Flies, Dra
Page 53 and 54:
Table 6. Rare vascular plant specie
Page 55 and 56:
Recommendation BTO be commissioned
Page 57 and 58:
Table 7. Species for which records
Page 59 and 60:
Table 8. Descriptions of Red Data B
Page 61 and 62:
If the sub-species was designated b
Page 63 and 64:
Collating and Synthesising Species
Page 65 and 66:
Table 11. Published, documentary an
Page 67 and 68:
Baron de Worms, C.G.M. (1953) Colle
Page 69 and 70:
Guild AnalysisA number of habitat a
Page 71 and 72: The specific questions for the work
Page 73 and 74: Findings of the Breckland Biodivers
Page 75 and 76: Recording Effort and CoverageThere
Page 77 and 78: Butterfly Conservation (Suffolk) 17
Page 79 and 80: Norfolk Biodiversity InformationSer
Page 81 and 82: Figure 11. Number of taxonomic grou
Page 83 and 84: difference is partly attributable t
Page 85 and 86: There were Breckland specialist spe
Page 87 and 88: Figure 13. Proportion of Breckland
Page 89 and 90: Distribution of Breckland Conservat
Page 91 and 92: Figure 15. Number of Breckland cons
Page 93 and 94: Evidence of Climatic Change: Long-T
Page 95 and 96: Figure 17. Total seasonal precipita
Page 97 and 98: Biodiversity Implications of the Ch
Page 99 and 100: Ariel depositions to agricultural s
Page 101 and 102: the status of Deschampsia flexuosa.
Page 103 and 104: The relative effects of ploughing,
Page 105 and 106: Trends in Species Status: Extinctio
Page 107 and 108: HymenopteraHymenopteraHymenopteraCo
Page 109 and 110: In addition to the loss of rare lic
Page 111 and 112: edstraw Galium parisiense (Tansley
Page 113 and 114: The relative extent of lichen rich
Page 115 and 116: The Feasibility and Usefulness of t
Page 117 and 118: Across patch arrangementLandscape c
Page 119 and 120: Across patcharrangementJuxtapositio
Page 121: Delivery of Multiple Species by Int
Page 125 and 126: Mechanical disturbance to create br
Page 129 and 130: estricted to road verges, with the
Page 131 and 132: 131
Page 133 and 134: Records of species from this guild
Page 135 and 136: © Jeremy Earlywww.natureconservati
Page 139 and 140: Open with sward mosaics guildChryso
Page 141 and 142: Grazing without physical disturbanc
Page 143 and 144: Deadwood in an open-woodland ecoton
Page 145 and 146: Specific Requirement in a Variety o
Page 147 and 148: Management to Sustain Dry Terrestri
Page 149 and 150: Heather should rather be considered
Page 151 and 152: GrazingrequirementsLightly sheep-gr
Page 153 and 154: a mosaic of overlapping ploughed, a
Page 155 and 156: Wind-blown sandThere is great uncer
Page 157 and 158: IntensityProcess Technique Immediat
Page 159 and 160: Complex Sward MosaicsComplex sward
Page 161 and 162: Management for Assemblages of Light
Page 163 and 164: Management for Species of Physicall
Page 165 and 166: Key Recommendations for Cultivated
Page 167 and 168: Shallow cultivation is preferable t
Page 169 and 170: Maidscross Hill is largely overgrow
Page 171 and 172: Ecological Requirements of Wetland
Page 173 and 174:
numbers of conservation priority sp
Page 175 and 176:
Recommendation Requirements of wetl
Page 177 and 178:
Figure 31. Number of Breckland cons
Page 179 and 180:
Restored pingo complexAt Great Hock
Page 181 and 182:
Figure 32. Number of Breckland cons
Page 183 and 184:
the difficulties of achieving this
Page 185 and 186:
Strategic Challenges to Biodiversit
Page 187 and 188:
Table 22. Problems arising from poo
Page 189 and 190:
Recommendation: Natural England and
Page 191 and 192:
It is therefore vital to carefully
Page 193 and 194:
Creating networks for resilienceTo
Page 195 and 196:
More ambitious possibilities that c
Page 197 and 198:
Figure 34. Example of a potential c
Page 199 and 200:
Connectivity networks© Neal Armour
Page 201 and 202:
and consider whether these repeated
Page 203 and 204:
Ensure that scrub removal, ploughin
Page 205 and 206:
ReferencesADAS. (1997) Biological M
Page 207 and 208:
Haes, E. C. M. & Harding, P. T. (19
Page 209 and 210:
Sastre, B.(2003). Ground spider com
show all

Securing Biodiversity in Breckland - European Commission

Create successful ePaper yourself

Delete template?

Save as template?