Lleoliad:
Mae gan Fae Cemlyn (sy’n rhan o AGA Ynys Feurig, Bae Cemlyn a’r Moelrhoniaid) boblogaethau o fôr-wenoliaid cyffredin, môr-wenoliaid y gogledd a môr-wenoliaid pigddu sy’n magu ar yr ynysoedd isel yn y prif fôr-lyn. Mae nifer y parau magu o bob rhywogaeth yn amrywio o flwyddyn i flwyddyn, ond mae’r safle’n hynod bwysig i’r môr-wenoliaid pigddu ac, ar hyn o bryd, mae tua 20% o boblogaeth fagu’r DU i’w gweld yma. Mae hyn yn seiliedig ar ffigurau 2015 (Chris Wynne, gohebiaeth bersonol, 2016).
Mae gan y SoDdGa yma dair nodwedd arbennig: casgliad o adar yn magu (môr-wenoliaid pigddu, môr-wenoliaid gwridog, môr-wenoliaid cyffredin a môr-wenoliaid y gogledd), môr-lyn arfordirol a gro mân gyda llystyfiant. Hefyd mae’r safle’n Ardal Cadwraeth Arbennig (ACA) oherwydd ei bwysigrwydd am ei fôr-lyn arfordirol a’r rhywogaethau cysylltiedig a llystyfiant parhaol y glannau caregog.
Location:
Cemlyn Bay (which is part of the SPA of Ynys Feurig, Cemlyn Bay and the Skerries) has colonies of common, Arctic and Sandwich terns which breed on the low islands in the main lagoon. The number of breeding pairs of each species fluctuates from year to year, but the site is particularly important for Sandwich tern and currently holds in the region of 20% of the UK breeding population. This is based on 2015 figures (Chris Wynne, per comms, 2016).
This SSSI has three special features: a breeding bird assemblage (Sandwich tern, roseate tern, common tern and Arctic tern), coastal lagoon and vegetated shingle. This site is also a Special Area of Conservation (SAC) due to its importance for its coastal lagoon and associated species and the perennial vegetation of stony banks.
Mae gan Fae Cemlyn (sy’n rhan o AGA Ynys Feurig, Bae Cemlyn a’r Moelrhoniaid) boblogaethau o fôr-wenoliaid cyffredin, môr-wenoliaid y gogledd a môr-wenoliaid pigddu sy’n magu ar yr ynysoedd isel yn y prif fôr-lyn. Mae nifer y parau magu o bob rhywogaeth yn amrywio o flwyddyn i flwyddyn, ond mae’r safle’n hynod bwysig i’r môr-wenoliaid pigddu ac, ar hyn o bryd, mae tua 20% o boblogaeth fagu’r DU i’w gweld yma. Mae hyn yn seiliedig ar ffigurau 2015 (Chris Wynne, gohebiaeth bersonol, 2016).
Mae gan y SoDdGa yma dair nodwedd arbennig: casgliad o adar yn magu (môr-wenoliaid pigddu, môr-wenoliaid gwridog, môr-wenoliaid cyffredin a môr-wenoliaid y gogledd), môr-lyn arfordirol a gro mân gyda llystyfiant. Hefyd mae’r safle’n Ardal Cadwraeth Arbennig (ACA) oherwydd ei bwysigrwydd am ei fôr-lyn arfordirol a’r rhywogaethau cysylltiedig a llystyfiant parhaol y glannau caregog.
Location:
Cemlyn Bay (which is part of the SPA of Ynys Feurig, Cemlyn Bay and the Skerries) has colonies of common, Arctic and Sandwich terns which breed on the low islands in the main lagoon. The number of breeding pairs of each species fluctuates from year to year, but the site is particularly important for Sandwich tern and currently holds in the region of 20% of the UK breeding population. This is based on 2015 figures (Chris Wynne, per comms, 2016).
This SSSI has three special features: a breeding bird assemblage (Sandwich tern, roseate tern, common tern and Arctic tern), coastal lagoon and vegetated shingle. This site is also a Special Area of Conservation (SAC) due to its importance for its coastal lagoon and associated species and the perennial vegetation of stony banks.
Satellite view of Cemlyn Bay showing the two tern islands protected by the shingle wall (Photo by Google Maps)
Y Rhywogaethau o Adar yn Magu:
Nid yw’r môr-wenoliaid gwridog wedi magu yng Nghemlyn ers 1994. Ond, yn 2015, treuliodd un pâr rywfaint o amser yn y warchodfa, yn arddangos ac yn archwilio’r safleoedd nythu. Yn ystod y pum mlynedd diwethaf, mae cyfartaledd o 40 o barau o fôr-wenoliaid y gogledd wedi bod yma, ac 119 o barau o fôr-wenoliaid cyffredin; gostyngiad yw’r duedd ddiweddar. Ar y llaw arall, mae cynnydd wedi bod yn nifer y môr-wenoliaid pigddu gyda chyfartaledd dros bum mlynedd o 2135 o barau, gydag amcangyfrif o 2595 yn 2016; mae hyn oddeutu 20% o boblogaeth y DU a 3% o boblogaeth y byd. Mae gan y boblogaeth o wylanod penddu, sydd â chyswllt agos â’r môr-wenoliaid pigddu, gyfartaledd dros bum mlynedd o 388 o barau, ac eto’n cynyddu (Wynne, 2016).
Breeding Bird Species:
Roseate terns have not bred at Cemlyn since 1994. But in 2015 a single pair spent some time on the reserve, displaying and inspecting nest sites. Over the last five years Arctic terns have averaged 40 pairs and common terns 119 pairs; the recent trend has been downwards. On the other hand, Sandwich terns are on an upward trend with a five-year average of 2135 pairs with 2595 estimated in 2016; this is approximately 20% of the UK population and 3% of the world population. The black-headed gull colony, strongly linked to the Sandwich terns, has a five-year average of 388 pairs, again with an upward trend (Wynne, 2016).
Nid yw’r môr-wenoliaid gwridog wedi magu yng Nghemlyn ers 1994. Ond, yn 2015, treuliodd un pâr rywfaint o amser yn y warchodfa, yn arddangos ac yn archwilio’r safleoedd nythu. Yn ystod y pum mlynedd diwethaf, mae cyfartaledd o 40 o barau o fôr-wenoliaid y gogledd wedi bod yma, ac 119 o barau o fôr-wenoliaid cyffredin; gostyngiad yw’r duedd ddiweddar. Ar y llaw arall, mae cynnydd wedi bod yn nifer y môr-wenoliaid pigddu gyda chyfartaledd dros bum mlynedd o 2135 o barau, gydag amcangyfrif o 2595 yn 2016; mae hyn oddeutu 20% o boblogaeth y DU a 3% o boblogaeth y byd. Mae gan y boblogaeth o wylanod penddu, sydd â chyswllt agos â’r môr-wenoliaid pigddu, gyfartaledd dros bum mlynedd o 388 o barau, ac eto’n cynyddu (Wynne, 2016).
Breeding Bird Species:
Roseate terns have not bred at Cemlyn since 1994. But in 2015 a single pair spent some time on the reserve, displaying and inspecting nest sites. Over the last five years Arctic terns have averaged 40 pairs and common terns 119 pairs; the recent trend has been downwards. On the other hand, Sandwich terns are on an upward trend with a five-year average of 2135 pairs with 2595 estimated in 2016; this is approximately 20% of the UK population and 3% of the world population. The black-headed gull colony, strongly linked to the Sandwich terns, has a five-year average of 388 pairs, again with an upward trend (Wynne, 2016).
Nesting Sandwich terns on the tern islands by Ben Stammers
Partneriaeth:
Mae Cemlyn yn rhan o Stad Cemlyn (134.5 ha), yn eiddo i’r Ymddiriedolaeth Genedlaethol. Fodd bynnag, mae’r môr-lyn, y pwll gerllaw ac ardaloedd eraill wedi cael eu rheoli fel gwarchodfa natur gan Ymddiriedolaeth Natur Gogledd Cymru ers 1971.
Partnership:
Cemlyn lies within the Cemlyn Estate (134.5 ha), owned by the National Trust; however, the lagoon, adjacent pool and other areas have been managed as a nature reserve by the North Wales Wildlife Trust since 1971.
Mae Cemlyn yn rhan o Stad Cemlyn (134.5 ha), yn eiddo i’r Ymddiriedolaeth Genedlaethol. Fodd bynnag, mae’r môr-lyn, y pwll gerllaw ac ardaloedd eraill wedi cael eu rheoli fel gwarchodfa natur gan Ymddiriedolaeth Natur Gogledd Cymru ers 1971.
Partnership:
Cemlyn lies within the Cemlyn Estate (134.5 ha), owned by the National Trust; however, the lagoon, adjacent pool and other areas have been managed as a nature reserve by the North Wales Wildlife Trust since 1971.
Sandwich tern colony takes to the air by Chris Wynne
Presenoldeb Prosiect LIFE:
Fel safle sy’n gartref i boblogaeth fawr o fôr-wenoliaid gyda nifer bach o fôr-wenoliaid gwridog wedi bod yma yn ddiweddar, bydd prosiect LIFE yn canolbwyntio ar leihau ysglyfaethwyr ac aflonyddwch a gwella cynhyrchiant y môr-wenoliaid drwy gynyddu nifer y staff ar y safle. Mae darparu ffens drydan sy’n gweithio gydag ynni solar i atal ysglyfaethwyr a rhywogaethau sy’n tarfu wedi bod yn welliant allweddol. Hefyd, mae gwaith adfer wedi cael ei wneud er mwyn cynyddu’r gofod nythu sydd ar gael i fôr-wenoliaid ac mae rafftiau môr-wenoliaid wedi cael eu darparu. Bydd y prosiect yn edrych hefyd ar atgyweirio’r esgair o ro mân sy’n gwarchod ynysoedd y môr-wenoliaid ac yn gweithio gyda’r awdurdod lleol a’r Ymddiriedolaeth Genedlaethol i integreiddio hyn gyda’r ddarpariaeth barcio tymor hir. Hefyd byddwn yn gwneud y safle’n fwy cynaliadwy drwy welliannau seilwaith (e.e. uwchraddio llety’r staff a chuddfannau symudol). Yn olaf, fel un o’r safleoedd gorau i wylio adar ar Ynys Môn, byddwn yn defnyddio’r cyfle i godi ymwybyddiaeth o’r prosiect a’i amcanion cadwraeth drwy waith ymgysylltu cymunedol.
Presence of the LIFE Project:
As a site that supports a large population of terns and recently held small number of roseate terns, the LIFE project will focus on reducing predation, disturbance and improved tern productivity through increasing the numbers of their site-based staff. The provision of a solar powdered electric fence to deter predators and species causing disturbance is a key improvement. In addition, restoration work has been undertaken to increase tern nesting space and tern rafts provided . The project will also look at repairing the shingle bank that protects the tern islands and work with local authority and National Trust to integrate this with long term provision of parking. We will also make the site more sustainable through infrastructure improvements (e.g. upgrading staff accommodation and mobile hides). Finally, as one of the best birdwatching sites on Anglesey, we will use the opportunity to raise awareness of the project and its conservation objectives through community engagement work.
Fel safle sy’n gartref i boblogaeth fawr o fôr-wenoliaid gyda nifer bach o fôr-wenoliaid gwridog wedi bod yma yn ddiweddar, bydd prosiect LIFE yn canolbwyntio ar leihau ysglyfaethwyr ac aflonyddwch a gwella cynhyrchiant y môr-wenoliaid drwy gynyddu nifer y staff ar y safle. Mae darparu ffens drydan sy’n gweithio gydag ynni solar i atal ysglyfaethwyr a rhywogaethau sy’n tarfu wedi bod yn welliant allweddol. Hefyd, mae gwaith adfer wedi cael ei wneud er mwyn cynyddu’r gofod nythu sydd ar gael i fôr-wenoliaid ac mae rafftiau môr-wenoliaid wedi cael eu darparu. Bydd y prosiect yn edrych hefyd ar atgyweirio’r esgair o ro mân sy’n gwarchod ynysoedd y môr-wenoliaid ac yn gweithio gyda’r awdurdod lleol a’r Ymddiriedolaeth Genedlaethol i integreiddio hyn gyda’r ddarpariaeth barcio tymor hir. Hefyd byddwn yn gwneud y safle’n fwy cynaliadwy drwy welliannau seilwaith (e.e. uwchraddio llety’r staff a chuddfannau symudol). Yn olaf, fel un o’r safleoedd gorau i wylio adar ar Ynys Môn, byddwn yn defnyddio’r cyfle i godi ymwybyddiaeth o’r prosiect a’i amcanion cadwraeth drwy waith ymgysylltu cymunedol.
Presence of the LIFE Project:
As a site that supports a large population of terns and recently held small number of roseate terns, the LIFE project will focus on reducing predation, disturbance and improved tern productivity through increasing the numbers of their site-based staff. The provision of a solar powdered electric fence to deter predators and species causing disturbance is a key improvement. In addition, restoration work has been undertaken to increase tern nesting space and tern rafts provided . The project will also look at repairing the shingle bank that protects the tern islands and work with local authority and National Trust to integrate this with long term provision of parking. We will also make the site more sustainable through infrastructure improvements (e.g. upgrading staff accommodation and mobile hides). Finally, as one of the best birdwatching sites on Anglesey, we will use the opportunity to raise awareness of the project and its conservation objectives through community engagement work.
Deployment of tern rafts to provide additional nesting opportunities in Cemlyn Bay by Chris Wynne
Restoration of the tern islands in Cemlyn which have been eroding (Photo by Chris Wynne)
Llyfryddiaeth:
Macleod-Nolan, C (2016) Adolygiad o ACA Prosiect LIFE y Môr-wenoliaid Gwridog. Prosiect Adfer y Môr-wenoliaid Gwridog LIFE yr UE. Dogfen heb ei chyhoeddi gan yr RSPB.
LIFE (2015) Ffurflenni Cais Technegol Natur a Bioamrywiaeth LIFE. Rhan A – Gwybodaeth Weinyddol. Prosiect Adfer y Môr-wenoliaid Gwridog LIFE yr UE.
Bibliography:
Macleod-Nolan, C (2016) Review on Roseate Tern LIFE Project SPAs. EU LIFE Roseate Tern Recovery Project. RSPB unpublished document.
LIFE (2015) LIFE Nature and Biodiversity Technical Applications Forms. Part A - Administrative information. EU LIFE Roseate Tern Recovery Project
Macleod-Nolan, C (2016) Adolygiad o ACA Prosiect LIFE y Môr-wenoliaid Gwridog. Prosiect Adfer y Môr-wenoliaid Gwridog LIFE yr UE. Dogfen heb ei chyhoeddi gan yr RSPB.
LIFE (2015) Ffurflenni Cais Technegol Natur a Bioamrywiaeth LIFE. Rhan A – Gwybodaeth Weinyddol. Prosiect Adfer y Môr-wenoliaid Gwridog LIFE yr UE.
Bibliography:
Macleod-Nolan, C (2016) Review on Roseate Tern LIFE Project SPAs. EU LIFE Roseate Tern Recovery Project. RSPB unpublished document.
LIFE (2015) LIFE Nature and Biodiversity Technical Applications Forms. Part A - Administrative information. EU LIFE Roseate Tern Recovery Project