Status and Breeding of Cormorants Phalacrocorax carbo in Wales (1996-1997): The Effect of the Sea Empress Oil Spill
The Sea Empress Environmental Evaluation Committee (SEEEC) and the Countryside Council for Wales (CCW) commissioned various studies of the effects of the oil spill on the wildlife of Pembrokeshire. This dataset contains the results of work carried out to investigate the effects of the spill on Cormorants Phalacrocorax carbo. In 1996 the project aimed to carry out a survey of the numbers, distribution and breeding performance of cormorants breeding in Wales, including detailed case studies at colonies in the area contaminated by oil in south and west Pembrokeshire. Monitoring of numbers and breeding performance was continued in 1997 with detailed studies of breeding phenology and breeding success at two South Pembrokeshire colonies (St Margaret's Island and Green Scar). Data was used to assess the numbers and distribution of Cormorants breeding in Wales; and to investigate the breeding performance of Cormorants in Wales, including detailed case studies at colonies in the area contaminated by oil in south and west Pembrokeshire.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
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- Cyfyngiadau
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- Metadata
Dull adnabod
- Dynodydd
- NRW_DS110099
- Teitl Amgen
-
- Statws a nythu mulfrain Phalacrocorax carbo yng Nghymru: effaith gollyngiad olew'r Sea Empress
- Laith Metadata
- English
- Datganiad
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1996: Case studies of breeding phenology and breeding success were carried out at four colonies in South Pembrokeshire. The count unit adopted was the apparently occupied nest (aon). A colony was defined as any aggregation of nests separated by at least 500 m from the next nearest aggregation. Breeding cormorants were counted by single counts timed to coincide with the main incubation or early chick-rearing stages (late May to early June)At colonies in which studies of breeding biology were being conducted repeat counts throughout the breeding period, also recording the position and status of all nests were taken. This technique allows early failures and late starters to be identified and is therefore the most accurate method. Brood size was monitored at 11 colonies in Wales: four in South Pembrokeshire close to the source of the oil spill , three in Cardigan Bay and four in North Wales. For comparison, data were also collected from three colonies in Devon and one in Caithness. All were visited on at least one occasion when the young were between four weeks old and fledging. 1997: Survey methodology follows that of Cormorant Breeding Colony Survey ( Sellers 1997). Brood size monitored at 8 colonies and three visits were made to St Margaret's Island and Green Scar to monitor breeding success.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 1997-11-30
Ystod amser
- Dyddiad cychwyn
- 1996-01-01
- Dyddiad gorffen
- 1997-06-14
- Categori pwnc
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- Biota
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
- Hyd
- England (ENG)
))
Maint Fertigol
- Maint allweddair MEDIN
-
benthic boundary layer
Dosbarthiad
- Fformat - Math a Disgrifiad
-
-
Documents
Documents
()
- Math
-
[A] Paper reports (MS Word, pdf-format)
-
Documents
Documents
()
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Datganiad
-
1996: Case studies of breeding phenology and breeding success were carried out at four colonies in South Pembrokeshire. The count unit adopted was the apparently occupied nest (aon). A colony was defined as any aggregation of nests separated by at least 500 m from the next nearest aggregation. Breeding cormorants were counted by single counts timed to coincide with the main incubation or early chick-rearing stages (late May to early June)At colonies in which studies of breeding biology were being conducted repeat counts throughout the breeding period, also recording the position and status of all nests were taken. This technique allows early failures and late starters to be identified and is therefore the most accurate method. Brood size was monitored at 11 colonies in Wales: four in South Pembrokeshire close to the source of the oil spill , three in Cardigan Bay and four in North Wales. For comparison, data were also collected from three colonies in Devon and one in Caithness. All were visited on at least one occasion when the young were between four weeks old and fledging. 1997: Survey methodology follows that of Cormorant Breeding Colony Survey ( Sellers 1997). Brood size monitored at 8 colonies and three visits were made to St Margaret's Island and Green Scar to monitor breeding success.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
- NRW Thesaurus
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- cormorants
- phalacrocorax carbo
- Sea Empress
- distributions
- breeding
- breeding birds
- case studies
- Pembrokeshire (county pre 1974)( county since 4/96)
- marine and freshwater inventory
- breeding performance
- colonies
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2023-12-31
Allweddair
- SeaDataNet Parameter Discovery Vocabulary
-
- Bird taxonomy-related abundance per unit area of surface
- Math
- Theme
Dyfyniad
- Dyddiad (Adolygu)
- 2021-01-06
Allweddair
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
- Teitlau cysylltiedig CNC
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Status and breeding success of cormorants phalacrocorax carbo in Wales in 1996 : the effect of the Sea Empress oil spill
- Teitlau cysylltiedig CNC
-
Status and breeding success of Cormorants Phalacrocorax carbo in Wales 1997
Cyfyngiadau
Cyfyngiadau
Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
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Cyfarwyddeb Cyfyngiadau Mynediad
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- Cyfyngiadau eraill
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There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
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- Cyfyngiadau eraill
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© CNC/NRW There are no use restrictions on this data. Recipients may re-use, reproduce, disseminate this data free of charge in any format or medium, provided they do so accurately, acknowledging both the source and NRW's copyright, and do not use it in a misleading context. It is the recipient's responsibility to ensure the data is fit for the intended purpose, that dissemination or publishing does not result in duplication, and that it is fairly interpreted. Advice on interpretation should be sought where required. To avoid re-using old data, users should periodically obtain the latest version from the original source.
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313130303939 XML
- Laith Metadata
- English
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2024-05-31T09:41:20.425Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
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1.0