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UK Otter Biodiversity Action Plan
Steering Group
Response to SACG document
'Otters in the UK: Fisheries and Conservation Issues’
The Specialist Anglers'
Conservation group paper 'Otters in the UK: Fisheries and
Conservation Issues', identifies and repeats a number of issues
concerning possible conflicts between otter conservation interests
and stillwater fishery interests. Our views on these are given
below, together with further information that clarifies the
Steering Group's position.
1 Status of the otter and
its conservation
We feel that a number of
points made in the SACG paper are based on limited information
about the aims and practice of otter conservation in the UK, and
we seek to clarify this below.
1. 1 Otter ecology
The otter is a natural and
legitimate part of any river ecosystem in the UK, and one of
Britain's largest carnivores, The home range for an otter on any
particular river system will depend on food availability, quality
of habitat and social interaction with any neighbouring otters,
and can range from 1 to over 40 km. A typical home range may
include a river, side streams, ponds and adjacent woodlands and
wetlands. The major component of the otter's diet is fish,
with eels other slower-moving species naturally preferred.
Evidence shows that there
are many areas where otters and mink coexist, and also areas that
otters have recolonised where mink are present. There is
some suggestion, yet to be scientifically proven, that mink
numbers decline when otters are present. Otherwise few
conflicts between the otter and other native species have been
identified. A healthy, self- sustaining fishery as part of the
natural ecosystem should also be able to support otters, which are
relatively low in number as they are the top predator in
the food web.
1.2 Decline and return of
the otter
Otters were thought to be
numerous on rivers across the UK before a dramatic decline in the
population occurred in the early 1960s. This was largely due to
introduction of toxic agricultural chemicals to the system,
although exacerbated by river and wetland habitat loss, and
hunting. In some areas, for example East Anglia, population
decline is thought to have continued up to the early 1980s.
Measures were, taken to halt
the decline, of the otter, such as banning of otter hunting and
most organochlorine pesticides, and affording the otter high
levels of legal protection (see below). Factors continuing to
limit otter recovery may include low food supply, lack of suitable
habitat, disturbance, road deaths and continued pollution.
The UK's otter population is
internationally important, since otters have declined across much
of the western European range, The otter has been given full legal
protection throughout England and Wales since 1978, in Scotland
since 1982 and in Northern Ireland since 1985. It is an offence
under the wildlife and Countryside Act to intentionally kill,
injure or take an otter from the wild without a licence; to damage
or obstruct a holt; or disturb an otter in its resting place.
Licences are required for checking holts or for carrying out work
that may disturb otters, such as the management of trees that are
known to be resting sites. The statutory nature conservation
agencies (EN, CCW, SNH and EHSNI) are responsible for issuing
these licences. The Conservation Regulations 1994 give broadly
parallel protection to the species, but extend the protection so
that it is an offence, to deliberately disturb an otter whether it
is in a holt or not.
Relatively strong otter
populations are now known to occur in Scotland, Northern
Ireland, most of Wales, and South-West England, 78% of riparian
sites in England were still without otters in 1994, the last date
for which we have comprehensive information. Since 1994, local
studies have indicated that numbers in England are rising
steadily, and that the otter population continues to expand into
new areas where it can be supported by good river and wetland
habitat. The next National Otter Survey of England is currently
underway, and we hope to have a new 'snapshot' of otter
distribution in this area by June 2001.
1.3 Reintroduction of
captive-bred Otters
In the past, The Otter Trust
and others have released a number of captive-bred otters into
English rivers in an attempt to boost populations, mainly in
eastern England. The Otter Trusts work on otter releases in East
Anglia during the 1980s and 1990s almost certainly prevented the
otter from becoming extinct here and provides the basis for
recovery in this area.
However, otters are now
present in low numbers on the vast majority of rivers in the UK,
and are expanding successfully from wild populations, dependent on
the conditions available to support them. The Otter
Biodiversity Action Plan Steering Group agreed in 1999 that no
further release of captive-bred otters is appropriate in the UK.
It is our understanding that The Otter Trust have now finished
their release program for otter releases in the UK and have no
plans for further otter releases in the UK.
However, it is currently
within the law to release captive-bred otters into the wild. The
UK Otter BAP Group have identified the need to review this
legislation in favour of more control over the activity. We are
aware that JNCC have indicated to DETR a conservation case for
greater control over the release of native species.
1.4 The Otter Biodiversity Action Plan
The Otter Biodiversity
Action Plan (BAP) is part of the UK Biodiversity Action Plan,
resulting from commitments made by Government under the Convention
on Biological Diversity at the Rio Earth Summit in 1992. The, UK
BAP outlines the actions needed to sustain and enhance the 'UK's
biodiversity, it is based on partnership and co-ordination between
those who advocate the sustainable, management of wildlife and
wild landscapes, and those whose remit gives them the power to
achieve that management.
The UK Otter Biodiversity
Action Plan (BAP) Steering Group has the task of promoting and
encouraging actions against the UK Otter BAP, directing resources,
overseeing implementation and reporting on progress to
Government. Current membership of the group reflects a wide
spectrum of partners working towards otter conservation as
follows:
Countryside Council for
Wales
English Nature
Environment Agency
Environmental Heritage, Service, Northern Ireland
Joint Nature Conservation Committee
Scottish Natural Heritage
Scottish Environmental Protection Agency
The Wildlife Trusts
Water UK
The Wildlife Trusts and the
Environment Agenecy are joint lead partners driving the otter
Biodiversity Action Plan. Water UK are ‘champions' of the plan,
contributing major resources towards meeting the BAP target. We
liaise closely with a number of other land use sectors whose work
involves otter-related issues, including the fishing sector.
The BAP objectives for
otters are as follows:
to maintain and expand
existing otter populations;
by 2010, restore breeding
otters to all catchments and coastal areas where they have been
recorded since 1960.
1.5 Achieving the BAP target
A number of organisations
are working actively towards achieving the ambitious Otter BAP
objectives above. All work towards improving conditions and
reducing threats to otters, to encourage natural recolonisation of
rivers from existing populations. Two major areas of work
are outlined below.
The Water UK and The
Wildlife Trusts' Otters and Rivers Project (OARP) is a network of conservation officers and
volunteers based at Wildlife Trusts across England and Wales,
working to improve wildlife habitats associated with rivers, and
hence encourage the return of a healthy otter population. The
project is supported by Water UK at the national level, and by
water companies, the Environment Agency and other commercial
sponsors at regional level.
OARP is delivering much of
the otter BAP through an ambitious work programme of action 'on
the ground'. This includes surveying, practical conservation work,
advising and working with landowners and river managers (including
the fishing sector) and campaigning locally and nationally on
issues affecting otters, rivers and wetlands.
The Environment Agency has statutory duties in relation to
pollution control, waste management, water resources, flood
defence, fisheries, recreation, conservation and navigation. It is
required to use its powers to contribute to the Government's
objectives of achieving sustainable development, One of its nine
key environmental themes is ‘enhancing biodiversity'. Achieving
this for rivers includes promoting good habitat management,
improving air and water quality, encouraging the wise use of water
and advising on developments sensitive to wildlife. The overall
improvement of the aquatic environment will be critical in
supporting otter populations into the future.
Conclusion 1
The restoration of the the
native otter population to its original state across the UK is a
Government-endorsed target as part of the Biodiversity Action Plan
process. Conservation work to achieve this target is undertaken in
partnership with a wide range of interests and land users,
including fishing interests.
Conclusion 2
The UK Otter BAP Group agree
that stricter legislation is needed to control the release of
captive-bred otters on rivers in the UK.
2 The impact of otters on
fisheries
2.1 Otter conservation
and fishing interests
In the course of otter
conservation work, conservation bodies often work closely with
fishing clubs and river restoration schemes initiated by fishing
interests. As interest groups, we also have a great deal to learn
from each other. In a large number of cases we share common goals:
to improve the quality of the river ecosystem, encouraging
self-sustaining and diverse populations of native fish and other
wildlife. Such a system would be able to support otters, as it
would support other natural predators.
In the majority of cases
until recently, we have perceived little conflict and much support
between fishing interests and otter conservation interests, except
where intensive management of a fishery for a particular
species has left little room for wildlife.
2.2 Otters and stillwater
fisheries
However, recently there has
been increasing concern about the impact of otter predation on
stillwater fisheries (particularly artificially-stocked ones) and
fish farms. Such land uses have arisen while otter numbers were
low, and as otters naturally recolonise their old haunts they can
be, perceived as a ‘new' predator by fishery owners, not as a
natural part of the ecosystem.
In particular, large
valuable carp-stocked ponds, gravel pits and lakes represent easy
sources of food for otters, particularly when their natural food
stocks (eels, coarse fish) are low or difficult to obtain.
Incidences of predation by otters tend to increase during the
winter months for this reason. The risk of otter predation also
increases if fisheries are situated near wetland habitats or if
breeding females are present. However, we have, no evidence to
suggest that incidences of predation at stillwater fisheries will
artificially increase the carrying capacity of any river catchment
for otters in the longer term.
As the otter population
increases through natural recolonisation of rivers, (not through
reintroduction), predation at stillwater fisheries looks set to
continue.
2.3 Research and advisory
work on stillwater fisheries
Together with a number of
fishermen and fishery owners and other otter specialists, the
Otters and Rivers Project have recently researched the subject of
otter predation, how big a problem it is and positive solutions to
prevent fish losses. A considerable amount of effort has been put
into training and information on otter predation, so that we can
provide a specialist advisory network for fishery owners across
the country should the problem arise.
Although (as with many
things in nature) there appear to be no hard and fast rules,
permanent specially-designed fencing is a solution to otter
predation, which has been shown to work. In the majority of cases
this fencing should include electric wires to ensure successful
exclusion of the otter. Other measures included 'decoy ponds'
stocked with low-value fish, which have also worked to
deter the otters from valuable fish in some cases.
It is essential that advice
is available on the risk of otter predation when deciding where
new fisheries should be sited. OARP and Environment Agency
fisheries departments are working closely to ‘spread the word' on
these issues.
Over the last winter
(October 1999 - March 2000), OARP has tried to establish some idea
of the current scale of conflict between otter conservation and
stillwater fishery owners. Over 70 sites have been visited as a
result of requests for advice on possible otter predation during
this period. Where otter predation was found to be occurring, OARP
have achieved considerable success in excluding otters from many
fisheries, and have also found that many fishery owners are
delighted that otters are present at their site!
Following a constructive
meeting between angling groups and conservation groups on the
issue in November 1998, EA have also produced a leaflet for
fishery owners outlining the issues and solutions to the problem.
Over the coming year OARP and the Environment Agency aim to
continue working in an advisory capacity to minimise the potential
for conflict between otters and fisheries. We consider this a
positive measure to help avoid conflict between fishing and
conservation interests.
Conclusion 3
The UK Otter BAP group
recognises that there is a conflict where otter predation causes
financial losses from specimen carp fisheries and fish farms.
Solutions have been researched and successful advice given to a
number of fishery owners, and we would support the continuation of
this work as a positive step towards resolving conflicts.
3 Commercial and fishery
considerations
3. 1 Fencing to protect
fisheries from otter predation
Specially designed fencing,
correctly installed, is the major option available to exclude
otters from fisheries where they are causing problems, and a
viable option in the majority of cases. We consider that it is the
responsibility of the fishery owner to protect their fishery with
fencing if this is possible, as they would protect their stocks
from other natural predators within the law. We also consider that
fencing would make sound financial sense, if individual fish being
lost are worth thousands of pounds each. If action is taken
quickly, or even in anticipation of the problem, then the loss to
stillwater fisheries from otter predation can be minimised.
Conservation charities such
as The Wildlife Trusts, or their associated projects, are not able
to provide financial support for capital works such as fencing to
protect commercial interests against impacts from wildlife.
Funding would also not be available for this purpose from
conservation budgets of the Environment Agency. However, it should
be noted that The Wildlife Trusts, Water UK and the Environment
Agency are putting resources into advisory work and research on
the topic, which we hope will help to resolve conflicts and
protect the wildlife in question.
We consider that if there is
a possible source of funding to fence commercial fisheries against
otter predation, it could be from MAFF. The UK Otter BAP group
would be pleased to offer assistance in seeking sources of
funding.
Conclusion 4
conservation bodies are not
able to pay for fencing fisheries against commercial losses
incurred through otter predation; we consider that this is the
responsibility of the fishery owner. However we are happy to help
with sourcing other funding for fencing, and offering our support,
where appropriate.
3.2 Trapping and moving
otters
At the meeting between
fishing bodies and ‘otter interests' in November 1998, it was
agreed that the idea of live trapping and moving otters to
immediately prevent predation in particular cases was not a viable
option. Despite this, SACG appear to continue viewing this idea as
a potential solution.
Within the, Wildlife and
Countryside Act, MAFF have the power to grant licences to allow
otherwise prohibited acts for the purpose of preventing serious
damage to fisheries. There is a requirement for MAFF to consult
with the conservation agencies before any such licence could be
granted.
The UK Otter BAP Group does
not consider this measure appropriate for otters, for a number of
reasons:
Otters can travel great
distances in a short time, and it is likely that this measure
would be ineffective in removing the otter for long enough to
erect a fence.
Trapping and moving one
otter into the territory of another would cause problems within
the population, cause stress to the individual in question, and
would not be good conservation practice.
Even if successful, such
action would he transferring the predation problem elsewhere.
Other fishery interests would not be likely to welcome additional
predators being artificially introduced.
Promoting the idea of
trapping and moving a protected species for such a purpose would
set an unacceptable precedent.
This cannot be regarded as a
sustainable option to resolve any predation problems.
Conclusion 5
The UK Otter BAP Group would not support the
issuing of 'licences for trapping and moving otters from a fishery,
as a measure to prevent predation.
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