17 research outputs found
Guidance for interpretation of CBD categories on introduction pathways
Technical note prepared by IUCN for the European Commission. This note has been drafted by a team of experts under the supervision of IUCN within the framework of the contract No 07.0202/2016/739524/SER/ENV.D.2 “Technical and Scientific support in relation to the Implementation of Regulation 1143/2014 on Invasive Alien Species”
A review of the population and conservation status of British mammals: technical summary
A report by the Mammal Society under contract to Natural England, Natural Resources Wales and Scottish Natural Heritage. We present the first comprehensive review of the status of British mammal populations for over 20 years. The population size, range size, temporal trends and future prospects of Britain’s 58 terrestrial mammals are assessed. Island races and feral mammals are excluded from the main review, but are considered in the appendi
The state of Britain’s larger moths 2021
This report summarises current knowledge of the state of Britain’s c.900 species of larger moths, presenting analyses of long-term change based on millions of records gathered through the Rothamsted Insect Survey (RIS) and National Moth Recording Scheme (NMRS)
Lepidoptera communities across an agricultural gradient: how important are habitat area and habitat diversity in supporting high diversity?
Agricultural expansion and intensification have
been linked with losses of biodiversity and disruption of
key ecosystem services in farmed landscapes. A number of
mitigation and adaptation strategies e.g. agri-environment
schemes, have been implemented to counter these declines
but their effectiveness has been questioned by conservationists
as well as policy makers. A key concern is the lack
of knowledge about how conservation efforts might best be
directed; especially in terms of aligning the scale and type
of implementation in different landscapes with the niche
requirements and dynamics of different species and taxa.
Here we focus on how the landscape context of farmed
systems at different spatial scales determines the abundance
of habitat generalist and specialist butterfly and moth
species in southern England. We used butterfly data from
20 UK Butterfly Monitoring Scheme sites, supplemented
with moth data from a light trap survey of 11 sites, in
southern England where the predominant habitat type
sampled is lowland calcareous grassland. Our results show
that larger areas of semi-natural grassland generally support larger numbers and a greater species richness of butterflies and moths, but that the composition of the
Lepidoptera fauna changes with habitat size depending on
the diversity of habitats in the landscape, particularly at the larger spatial scale. Larger areas of grassland in less
diverse landscapes result in a proportionally greater number
and diversity of habitat specialists, whilst habitat diversity is important in maintaining numbers and diversity
of more generalist wider countryside species. Large areas
of single habitat types may only be economically maintained
at the expense of habitat diversity. Whilst these sites
may be important in promoting abundance and diversity of
selected specialist species, they may be prone to lower
overall species richness. This has implications for improving the design and implementation of agri-environment
schemes aimed at providing suitable habitat in order
to promote the abundance and diversity of Lepidoptera and
other taxa
Tools to support butterfly monitoring and analysis. Technical report
This report summarises the work within ABLE to contribute to the development of a unified system of
validated and standardised butterfly counts from across European monitoring schemes. The primary
aim is to provide the technical infrastructure to support the development of butterfly monitoring
schemes within EU member states and regular reports on butterfly indicators and to enrich research
on biodiversity.
To achieve this objective, this report summarises work on the following activities:
1. Produce an effective database for butterfly monitoring records to ensure secure long-term
data storage and provide with the capability to produce a suite of butterfly indicators;
2. Establish legal data-sharing agreements with existing monitoring schemes to clarify
intellectual property rights and rights of access to data;
3. Gather data annually from existing monitoring schemes, standardise and validate counts,
populate database;
4. Extend online data entry systems to allow new countries to submit data efficiently and in a
standard format;
5. Develop and test a mobile application for capturing timed counts of butterflies across
Europe, supporting a new protocol developed in this project;
6. Provide training for monitoring scheme volunteers and scheme co-ordinators in the use of
the online data entry system and data analysis tools;
7. Provide tools, training and online resources for calculating national butterfly population
trends;
8. Make BMS records and metadata available in a standard and validated format for research as
appropriate
Visualizing Complex Process Hierarchies during the Modeling Process
Abstract. Clinical practice guidelines are documents that include recommendations describing appropriate care for the management of patients with a specific clinical condition, such as diabetes or chronic heart failure. Several representation languages exist to model these documents in a computer-interpretable and-executable form with the intention of integrating them into clinical information systems. Asbru is one of these representation languages that is able to model the complex hierarchies of these medical processes (called plans in Asbru). To allow their efficient evaluation and manipulation, they must be visualized in a compact and still clear form. This visualization must be integrated into an editing environment which makes changes to the process hierarchy easy and gives immediate feedback on the changes. In this paper, we present a novel visualization, Plan Strips, which represents the hierarchy of plans, i.e., processes, as a set of nested strips. It represents the synchronization of the plans by colour-coding the strips and by the ordering of the strips. This saves considerable space compared to graph representations. The visualization is integrated into an editing environment which allows the immediate modification of the plan hierarchy, but also changes to all other aspects of the plan
A vascular plant red list for England
The results detailed in this vascular plant Red List present for the first time the current state of England's flora measured against standardised IUCN criteria. Almost one in five species has been assessed as threatened, with many more species assessed as "Near Threatened". The destruction and transformation of semi-natural habitats across the English landscape since the publication of the first Atlas of the British Flora (Perring & Walters 1962) is well known, and these changes are mirrored not only in the long list of taxa assessed as threatened in England but also in the decline in distribution by 20% or more of a suite of "Near Threatened" species, some of which were previously assumed to be widespread and with relatively stable distributions. The strategic approach advocated by Lawton et al. (2010) to restore, create and connect extant habitats at the landscape scale is essential if the declines identified in this and other Red Lists are to be arrested. Such an approach demands long-term commitment, considerable resources and a recognition of the benefits to be gained from a more diverse and adaptable environment