Cyfoeth Naturiol Cymru

Natural Resources Wales

DEDDF BYWYD GWYLLT A CHEFN GWLAD 1981 (FEL Y’I DIWYGIWYD)
HYSBYSU SAFLE O DDIDDORDEB GWYDDONOL ARBENNIG O DAN ADRAN 28 (1)

Rhoddir rybudd trwy hyn bod Corff Adnoddau Naturiol Cymru a enwir yn Cyfoeth Naturiol Cymru yn ystyried Cwm Marlais yn Safle o Dddiddordeb Gwyddonol Arbennig (SoDdGA).
Mae’r safle wedi’i leoli 2 km i’r gogledd, gogleddorllewin o Brechfa a 15 km i’r gogledd-ddwyrain o Gaerfyrddin yn Awdurdod Unedol Sir Gaerfyrddin, ac mae iddo arwynebedd o 71.96 hectar.
Canolir y safle ar SN513330.
Mae’r safle o ddiddordeb arbennig am fod yno gasgliad o gennau Mynegai Coetir Cefnforol Deheuol, ynghyd â chasgliad o gennau Mynegai Coedwigoedd Glaw’r Ucheldir, a chasgliad o fryoffytau Coetir Cefnforol.
O dan yr hysbysiad hwn mae’n ofynnol i bob perchennog a deiliaid hysbysu CNC am rai gweithrediadau a allai amharu ar ddiddordeb arbennig y safle. Gall methu â gwneud hynny fod yn gyfystyr â throsedd.

Nid yw’r hysbysiad hwn yn rhoi unrhyw hawliau mynediad i SoDdGA Cwm Marlais.
Gall unrhyw un sydd â diddordeb yn y tir wneud sylwadau ynghylch yr hysbysiad yn ysgrifenedig i CNC i’r cyfeiriad isod erbyn 21 Chwefror 2026.

Gellir cael manylion llawn am yr hysbysiad gan gynnwys map, disgrifiad o’r safle a rhestr o weithrediadau a allai fod yn niweidiol a datganiad o farn CNC am reoli’r tir oddi wrth: Cyfoeth Naturiol Cymru, Tîm Amgylchedd Sir Gaerfyrddin, Plas Gwendraeth, Heol Parc Mawr, Parc Busnes Cross Hands, Cross Hands, Llanelli, Sir Gaerfyrddin SA14 6RE.

carms.environmentteam@cyfoethnaturiolcymru.gov.uk

WILDLIFE AND COUNTRYSIDE ACT 1981 (AS AMENDED)
NOTIFICATION OF A SITE OF SPECIAL SCIENTIFIC INTEREST UNDER SECTION 28 (1)

Notice is hereby given that the Natural Resource Body for Wales otherwise known as Natural Resources Wales considers Cwm Marlais to be a Site of Special Scientific Interest (SSSI).
The site is located 2 km to the north, north west of Brechfa and 15 km north east of Carmarthen in the Unitary Authority of Carmarthenshire and covers an area of 71.96 hectares.
Centred on National Grid Reference SN513330. The site is of special interest for an assemblage of Southern Oceanic Woodland Index lichens, and assemblage of Upland Rainforest Index lichens, and an assemblage of Oceanic Woodland bryophytes.
Under this notification there is a requirement on all owners and occupiers to notify NRW of certain operations which may damage the special interest of the site. Failure to do so may constitute an offence.

This notification does not confer any rights of access to Cwm Marlais SSSI.
Any person with an interest in the land may make representations regarding the notification in writing to NRW at the address below by 21 February 2026.

Full details of the notification including a map, site description and list of potentially damaging operations and a statement on NRW’s views about the management of the land can be obtained from: Natural Resources Wales, Carmarthenshire Environment Team, Plas Gwendraeth, Heol Parc Mawr, Cross Hands Business Park, Cross Hands, Llanelli, Carmarthenshire SA14 6RE.

carms.environmentteam@cyfoethnaturiolcymru.gov.uk