Knowledge (XXG)

Gweunydd Glan-y-glasnant

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The site is designated as an SSSI for its species-rich neutral grassland, rare now in Great Britain with 97% of such land lost through agricultural improvements since 1930. Such fields provide habitat for up to 30 distinct species of plant per square metre, in contrast with the 1 or 2 species per
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A range of other habitats on the site, including acid grassland, scrub, semi-natural broadleaved woodland, hedgerows, individual trees, earthbank field boundaries, streams, ditches and rock outcrops support a broad range of fauna.
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Gweunydd Glan-y-glasnant SSSI is a set of unimproved cattle-grazed pasture and hay meadows, extending to 12.5 hectares (31 acres), on varying thicknesses of glacial till overlaying
424: 419: 325: 39: 94: 79: 149: 27: 428: 87: 176:. It is situated at 175 metres (574 ft) above sea level in the upper valley of the Nant Glas, a tributary of the 450: 387: 185: 399: 366: 265: 211: 410: 393: 346: 259: 247: 205: 241: 229: 277: 253: 235: 134: 271: 197: 223: 153: 73: 439: 169: 347:"Site of Special Scientific Interest, Carmarthenshire, Gweunydd Glan-y-glasnant" 181: 177: 109: 96: 173: 269:). A distinct part of the site is a fen-meadow hosting purple moor-grass ( 217: 157: 446:
Sites of Special Scientific Interest in Carmarthen & Dinefwr
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square metre on improved grassland fields. The site varies from
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List of Sites of Special Scientific Interest in Carmarthenshire
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Species common on the neutral grasslands include common bent (
367:"Your Special Site and its Future - Gweunydd Glan-y-glasnant" 193: 133: 125: 86: 72: 62: 318:"MAGIC Map Application - Gweunydd Glan-y-glasnant" 46: 233:). There are smaller communities of tormentil ( 8: 21: 16:Site of Special Scientific Interest in Wales 341: 339: 337: 335: 20: 180:, 0.8 miles (1.3 km) south-west of 312: 310: 306: 361: 359: 257:), as well as common spotted-orchid ( 184:and 0.6 miles (0.97 km) east of 7: 156:, Wales, designated in 1993 for its 150:Site of Special Scientific Interest 28:Site of Special Scientific Interest 14: 400:Your Special Site and its Future 45: 38: 263:) and the adder's-tongue fern ( 54:Location within Carmarthenshire 1: 429:National Biodiversity Network 200:to damper acidic grassland. 227:) and bird's-foot-trefoil ( 467: 372:. Natural Resources Wales. 352:. Natural Resources Wales. 33: 26: 146:Gweunydd Glan-y-glasnant 129:12.5 hectares (31 acres) 22:Gweunydd Glan-y-glasnant 388:Natural Resources Wales 275:) and meadow thistle ( 209:), sweet vernal-grass ( 386:SSSI information from 110:51.784068°N 4.095592°W 266:Ophioglossum vulgatum 239:), meadow vetchling ( 212:Anthoxanthum odoratum 260:Dactylorhiza fuchsii 248:Achillea millefolium 221:), common knapweed ( 115:51.784068; -4.095592 206:Agrostis capillaris 106: /  23: 242:Lathyrus pratensis 230:Lotus corniculatus 411:SSSI Citation map 278:Cirsium dissectum 254:Prunella vulgaris 236:Potentilla erecta 143: 142: 458: 451:Meadows in Wales 374: 373: 371: 363: 354: 353: 351: 343: 330: 329: 314: 272:Molinia caerulea 198:mesotrophic soil 121: 120: 118: 117: 116: 111: 107: 104: 103: 102: 99: 82: 49: 48: 42: 24: 466: 465: 461: 460: 459: 457: 456: 455: 436: 435: 425:NBN Gateway map 383: 378: 377: 369: 365: 364: 357: 349: 345: 344: 333: 322:DEFRA MAGIC Map 316: 315: 308: 303: 291: 224:Centaurea nigra 166: 154:Carmarthenshire 114: 112: 108: 105: 100: 97: 95: 93: 92: 78: 68:Carmarthenshire 58: 57: 56: 55: 52: 51: 50: 17: 12: 11: 5: 464: 462: 454: 453: 448: 438: 437: 434: 433: 432: 431: 422: 413: 405: 404: 403: 396: 382: 381:External links 379: 376: 375: 355: 331: 305: 304: 302: 299: 298: 297: 290: 287: 251:), self-heal ( 165: 162: 141: 140: 137: 131: 130: 127: 123: 122: 90: 84: 83: 76: 74:Grid reference 70: 69: 66: 60: 59: 53: 44: 43: 37: 36: 35: 34: 31: 30: 15: 13: 10: 9: 6: 4: 3: 2: 463: 452: 449: 447: 444: 443: 441: 430: 426: 423: 421: 417: 414: 412: 409: 408: 406: 402: 401: 397: 395: 394:SSSI Citation 392: 391: 389: 385: 384: 380: 368: 362: 360: 356: 348: 342: 340: 338: 336: 332: 327: 323: 319: 313: 311: 307: 300: 296: 293: 292: 288: 286: 282: 280: 279: 274: 273: 268: 267: 262: 261: 256: 255: 250: 249: 244: 243: 238: 237: 232: 231: 226: 225: 220: 219: 214: 213: 208: 207: 201: 199: 195: 189: 187: 183: 179: 175: 171: 170:coal measures 163: 161: 159: 155: 151: 147: 138: 136: 132: 128: 124: 119: 91: 89: 85: 81: 77: 75: 71: 67: 65: 61: 41: 32: 29: 25: 19: 398: 321: 283: 276: 270: 264: 258: 252: 246: 240: 234: 228: 222: 216: 215:), clovers ( 210: 204: 202: 190: 167: 145: 144: 135:Notification 18: 245:), yarrow ( 182:Cross Hands 178:River Gwili 172:and shaley 113: / 88:Coordinates 440:Categories 301:References 160:features. 152:(SSSI) in 98:51°47′03″N 416:MAGIC map 218:Trifolium 174:sandstone 158:botanical 101:4°05′44″W 289:See also 196:neutral 80:SN555116 64:Location 407:Maps: 186:Tumble 420:DEFRA 370:(PDF) 350:(PDF) 326:DEFRA 148:is a 164:SSSI 139:1993 126:Area 281:). 442:: 427:- 418:- 390:: 358:^ 334:^ 324:. 320:. 309:^ 194:pH 188:. 328:.

Index

Site of Special Scientific Interest
Gweunydd Glan-y-glasnant is located in Carmarthenshire
Location
Grid reference
SN555116
Coordinates
51°47′03″N 4°05′44″W / 51.784068°N 4.095592°W / 51.784068; -4.095592
Notification
Site of Special Scientific Interest
Carmarthenshire
botanical
coal measures
sandstone
River Gwili
Cross Hands
Tumble
pH
mesotrophic soil
Agrostis capillaris
Anthoxanthum odoratum
Trifolium
Centaurea nigra
Lotus corniculatus
Potentilla erecta
Lathyrus pratensis
Achillea millefolium
Prunella vulgaris
Dactylorhiza fuchsii
Ophioglossum vulgatum
Molinia caerulea

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