Spatial Action Plan for Great Crested Newts in Anglesey, A Manual for Achieving Favourable Conservation Status.
This report draws on a series of previous research reports commissioned by Natural Resources Wales (NRW) and its predecessor body on determining the conservation status of great crested newts, Triturus cristatus, in north Wales. The Welsh Government is obligated to maintain or restore the favourable conservation status of great crested newts within Wales and this report aims to provide practical guidance on how this can be achieved within the County of Anglesey. It is one of a series of three such reports, the other two covering the counties of Flintshire and Wrexham. Due to its legal status, the great crested newt is the focus of considerable conservation effort from a variety of bodies. This document aims to provide an overarching strategy to guide developers, conservation NGO's and local and national government in their efforts in order to achieve the greatest conservation benefit for great crested newts and ensure a unified approach to achieving Favourable Conservation Status (FCS) across the county. To this end, the report is accompanied by a number of GIS layers which will be of particular practical use to those engaged in great crested newt conservation across Anglesey. The report presents a scoring method by which the Current Conservation Status (CCS) of great crested newts can be determined at multiple geographical scales from a single pond to the entire county. It then uses predictive modelling based on geographical, distributional, climatic and historical data to produce habitat suitability maps and to derive survey targets and pond creation targets to enable FCS to be achieved within the county. These techniques can be applied in various land use and planning scenarios and the report provides practical guidance on identifying areas of particularly high or low value for great crested newts, assessing the impacts of proposed developments, designing effective mitigation and the implications of agri-environment schemes for great crested newts. During the modelling process, a total of 2,146 extant ponds were identified within the County of Anglesey. With a view to redressing historic loss (37% of ponds having been lost since the 1843 mapping data), FCS was considered in the light of the level of occupancy that would have occurred at the time of the original mapping relative to current levels of occupancy and Habitat Suitability of ponds to the species (Habitat Suitability Index (HSI) scores). Historically we estimate there would have been 2,983 ponds in Anglesey and a corresponding 464 ponds occupied by great crested newts and 716 ponds with an HSI score >0.7. We propose that the 464 occupied ponds should be used to provide a target level for great crested newts (Favourable Reference Value for Range and Habitat sufficiency). This is further qualified by requiring these ponds have an HSI >0.7 to ensure habitat quality, has at least a medium population, are found at a density of at least 4 per km2 (to ensure population viability) and has a minor (or lower) level of threat (to address the species' future prospects). The Current Status of the species in Anglesey is estimated as having 334 ponds occupied by great crested newts. Using the proposed scoring system, FCS in Anglesey requires 464 occupied ponds which form part of medium populations, in high pond density areas and that have an HSI of >0.7: the minimum score to achieve these criteria will be 16 for each pond. To achieve FCS the score would need to exceed is 464 x 16 = 8,352. With an estimated 334 ponds being occupied and if all of the ponds are in favourable condition (i.e. would score 16), then the Current Conservation Status score = 5,344. The approach to identifying CCS and FCS laid out within this document is one of a number which are in the process of being developed across the UK and Europe. Whilst there is currently no single standard approach which can be applied uniformly across a range of species and habitats, one may emerge in the ...
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS118712
- Teitl Amgen
-
- Cynllun Gweithredu Gofodol ar gyfer Madfallod Dŵr Cribog ar Ynys Môn, Llawlyfr ar gyfer Cyflawni Cadwraeth Ffafriol.
- Laith Metadata
- English
- Datganiad
-
It is practically impossible to achieve complete survey coverage of great crested newts within Anglesey and this presents difficulties when making informed decisions regarding their conservation, such as how FCS can be achieved. One approach to filling the significant gaps in our knowledge of great crested newts within the area is to use a predictive model. Over recent years, Amphibian and Reptile Conservation (ARC), in conjunction with Natural Resources Wales (NRW) and its predecessor body, have developed such a model for great crested newts in north Wales, including Anglesey. Previous versions of the model are documented by Amphibian & Reptile Conservation et al (2010) and Arnell & Wilkinson (2011; 2013). The model underpinning this spatial plan is based on Arnell & Wilkinson (2013). They compiled high resolution, recent (1990-2011) great crested newt records and then used the distribution modelling software, MaxEnt (Elith et al 2006), along with environmental layers to produce an estimated probability of presence output for great crested newts in northeast Wales at a 25m resolution across the study area. The model used 19 bioclimatic variables, the effect of land cover was incorporated using the Land Cover Map 2007, pond density was extracted from Ordnance Survey Mastermap and Slope and Aspect layers were derived from elevation data using GIS software. Full methodological details of the model construction are provided within Arnell & Wilkinson (2013). This model has subsequently been modified to include flood risk data as although floodplains often contain many ponds, these are typically unsuitable for great crested newts as they often contain predatory fish. This had caused the earlier versions to overestimate the suitability of floodplains.
- Gwybodaeth ychwanegol
-
Russell, L. Starnes, T. and Wilkinson, J. (2017), Spatial Action Plan for Great Crested Newts in Anglesey, A Manual for Achieving Favourable Conservation Status, NRW Science Report Series. Report 76 pp 69, NRW, Bangor.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2017-03-31
Ystod amser
- Dyddiad cychwyn
- 1990-01-01
- Dyddiad gorffen
- 2011-12-31
- Categori pwnc
-
- Biota
Rhychwant
Rhychwant
- Hyd
- SIR YNYS MON - ISLE OF ANGLESEY
Dosbarthiad
- Fformat - Math a Disgrifiad
-
-
Geographic Information System
Geographic Information System
()
- Math
-
[A] The final report [NRW Evidence Report No. 076 - Spatial Action Plan for Great Crested Newts in Anglesey.pdf] in Microsoft Word and Adobe PDF formats. [B] A series of GIS layers on which the maps in the report are based with a series of word documents detailing the data processing and structure of the GIS layers.
-
Geographic Information System
Geographic Information System
()
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Datganiad
-
It is practically impossible to achieve complete survey coverage of great crested newts within Anglesey and this presents difficulties when making informed decisions regarding their conservation, such as how FCS can be achieved. One approach to filling the significant gaps in our knowledge of great crested newts within the area is to use a predictive model. Over recent years, Amphibian and Reptile Conservation (ARC), in conjunction with Natural Resources Wales (NRW) and its predecessor body, have developed such a model for great crested newts in north Wales, including Anglesey. Previous versions of the model are documented by Amphibian & Reptile Conservation et al (2010) and Arnell & Wilkinson (2011; 2013). The model underpinning this spatial plan is based on Arnell & Wilkinson (2013). They compiled high resolution, recent (1990-2011) great crested newt records and then used the distribution modelling software, MaxEnt (Elith et al 2006), along with environmental layers to produce an estimated probability of presence output for great crested newts in northeast Wales at a 25m resolution across the study area. The model used 19 bioclimatic variables, the effect of land cover was incorporated using the Land Cover Map 2007, pond density was extracted from Ordnance Survey Mastermap and Slope and Aspect layers were derived from elevation data using GIS software. Full methodological details of the model construction are provided within Arnell & Wilkinson (2013). This model has subsequently been modified to include flood risk data as although floodplains often contain many ponds, these are typically unsuitable for great crested newts as they often contain predatory fish. This had caused the earlier versions to overestimate the suitability of floodplains.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
- NRW Thesaurus
-
- great crested newts
- triturus cristatus
- modelling
- Favourable Conservation Status (favourable condition)
- Anglesey (Ynys Mon) (and as county shire since 4/96)
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2023-12-31
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
- Teitlau cysylltiedig CNC
-
Spatial action plan for Great crested newts in Anglesey
Cyfyngiadau
Cyfyngiadau
Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
- Math o Gyfyngiad
- Other restrictions
Cyfarwyddeb Cyfyngiadau Mynediad
- Cyfyngiadau
- no limitations
Testun cyfyngiadau mynediad
- Cyfyngiadau eraill
-
There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
Defnyddiwch gyfyngiadau
- Cyfyngiadau Defnyddio
- Other restrictions
- Cyfyngiadau eraill
-
© CNC/NRW Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose.
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313138373132 XML
- Laith Metadata
- English
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2024-05-31T09:44:18.479Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0