Monday, December 23, 2013
Sunday, December 22, 2013
4th edition of Global Reintroduction Perspectives
Re-introduction is acquiring an increasingly important role
in conservation. This latest edition of Global Reintroduction Perspectives from
IUCN provides 52 fascinating case studies in reintroduction. It is very useful
to conservation professionals and the wildlife managers. Read the report HERE
Wednesday, December 18, 2013
Powerful software Carnegie Landsat Analysis System developed by the Carnegie Institution for Science is now available at no cost
Hi
guys,
Here is a golden opportunity for you
to get to know and become proficient in the use of use Landsat Analysis System
developed by the Carnegie Institution for Science. The free online course called CLASlite
Classroom trains users how to monitor the extent and condition of the
world's forests using satellite imagery. It is designed for both expert
and entry-level users.
John
Mitchell, vice provost for online learning at Stanford said "CLASlite Classroom represents a new model of
collaborative online learning," "It's a perfect example of how the
open source online learning platform, OpenEdX, can be used to support
scholarship and teaching that has real-world impact, and help the scientific
community enlarge the field of engaged citizenry. People everywhere who want to
gain knowledge can take this course and also contribute to an important
scientific effort."
For
more information and to register for the course, visit the CLASlite course webpage.
Wednesday, October 02, 2013
Wildlife Comeback in Europe study

The Eurasian beaver, European bison and White-tailed eagle are among the species that have made remarkable comeback in Europe. The report ‘Wildlife Comeback in Europe’, describes how, why and where 37 mammal and bird species have recovered over the past 50 years. The report gives lessons for the conservation of these and other species.
Professor Jonathan Baillie,
Director Zoological Society of London (ZSL), says: “It is essential that we
both celebrate and learn from major successes in conservation. This study helps us understand the
interventions and conditions necessary for a broad range of species to
experience similar recoveries”
Read the report HERE
Saturday, September 28, 2013
A new book for protected area professionals
Social and Economic Benefits
of Protected Areas
An Assessment Guide
Edited by Marianne Kettunen,
Patrick ten Brink
Routledge – 2013 – 368 pages
340
pages, 58 b/w illustrations, 34 tables
Paperback | Aug 2013 | #207183 |
ISBN-13: 9780415632843
Marianne Kettunen is Senior Policy Analyst at the
Institute for European Environmental Policy (IEEP) and Guest Researcher at the
Finnish Environment Institute, Helsinki, Finland.
Patrick ten
Brink is Senior Fellow and Head of Office at the
Institute for European Environmental Policy in Brussels, Belgium. He is also
the editor of the book: "The Economics of Ecosystems and Biodiversity in
National and International Policy Making", developed within "The
Economics of Ecosystems and Biodiversity" (TEEB) project, administered by
the United Nations Environment Programme.
Publishers description
Protected areas (PAs)
contain biodiversity and ecosystems of high conservation value. In addition,
these areas provide a range of benefits, both direct and indirect, to our
societies and economies, i.e. so called ecosystem services. These services
include, for example, an ecosystem's ability to regulate floods and climate,
purify water, secure the pollination of crops, and create opportunities for
recreation, culture and tourism.
This book offers a
comprehensive introduction to the socio-economic benefits of PAs and PA
networks and provides step-by-step practical guidance on identifying, assessing
and valuing the various ecosystem services and related benefits provided by
PAs. It also aims to improve the communication of PA benefits to different
stakeholders and the general public. It is shown that identifying and valuing
the socio-economic benefits of PAs can be beneficial for several reasons.
Demonstrating socio-economic importance of a protected site can significantly
increase political and stakeholder support for the site and resolve conflicts
between different interest groups. This can lead to positive changes in
policies and decision-making. Insights on PA benefits are also needed to
identify a combination of actions and land use practices that best support the
sustainable and equitable utilisation of these benefits, while retaining a
site’s conservation goals. Finally, demonstrating different benefits can help
to discover alternative and sustainable sources for financing the management of
PAs.
Wednesday, September 25, 2013
Message from IUCN - Masters in Conservation Leadership - Applications and scholarship support for October 2014
Masters in
Conservation Leadership - Applications
and scholarship support for October 2014
This course is a full-time, one year Masters, aimed at graduates of leadership potential with at least three to five years of experience relevant to biodiversity conservation. The unique feature of the course is its delivery by a collaboration between six University of Cambridge departments and nine leading conservation organisations based around Cambridge, and its focus on issues of management and leadership. A key aim of the course is to build the capacity of conservation leaders from tropical countries. As a result, the first two cohorts have attracted post-experience students from around the world.
IUCN have scholarship funding available for the academic year beginning in October 2014. All applications for October entry and scholarships must be received by the 3 December 2013. Further details of the course and scholarships can be found at:
http://www.geog.cam.ac.uk/graduate/mphil/conservation/
IUCN also encourage applicants to seek scholarship
support locally, for example the Chevening Scholarship schemes run by the
British Council in their home countries.
Friday, September 20, 2013
Novelist Thomas Pynchon shows that science and art can mesh beautifully
Novelist Thomas Pynchon, in his latest book Bleeding
Edge (Penguin) underlines the fact that science and art can mesh with
mutually beneficial results. There are few novelists who can claim to
successfully unite the two cultures, but Pynchon does it with panache. Pynchon turns to science and engineering as sources of
imagery and symbolism
The novel
centres on Maxine Tarnow, a mother of two boys and self-described "paid up
member of Yentas with Attitude,”. Maxine runs a fraud investigation business called
"Tail 'Em and Nail 'Em’. She gets deeply involved in the investigation of
a computer-security firm called Hashlingerz. The mysterious techno geek CEO of
the firm seems to rake in lot of unaccountable money. The investigation of Maxine leads her deeper and
deeper into the Internet underworld, to a Second Life-like "deep Web"
world called DeepArcher, then on to a mysterious underground bunker in Montauk,
a drug-smuggling boat on the Hudson, and lot of other places in Manhattan. Meanwhile September 11 is round
the corner and Hashlingerz's activities points to some kind of connection to
terrorist groups.
The book
is beautifully written and is receiving rave reviews.
Here is a sample of the
description of uptown Manhattan in the rain: “What might only be a simple point
on the workday cycle . . . becomes a million pedestrian dramas, each one
charged with mystery, more intense than high-barometer daylight can ever allow.
Everything changes. There’s that clean, rained-on smell. The traffic noise gets
liquefied. Reflections from the street into the windows of city buses fill the
bus interiors with unreadable 3-D images, as surface unaccountably transforms
to volume. Average pushy Manhattan schmucks crowding the sidewalks also pick up
some depth, some purpose — they smile, they slow down, even with a cellular
phone stuck in their ear they are more apt to be singing to somebody than
yakking. Some are observed taking houseplants for walks in the rain. Even the lightest
umbrella-to-umbrella contact can be erotic.”
Read
an excellent review that appeared in Nature HERE
Thursday, September 19, 2013
2013 Champions of the Earth award winners
Here is the list of, UN's flagship environmental award winners
POLICY LEADERSHIP
Ms. Izabella Teixeira, Minister of
Environment, Brazil is recognized for her key
role in reversing deforestation in the Amazon and her role on high-level UN
panels on sustainable development
Janez Potočnik, European Commissioner
for the Environment is recognized for his work
advocating a shift from the current global model of intensive resource
consumption,
ENTREPRENEURIAL VISION
Brian McClendon, co-founder and VP of
Google Earth is recognized for providing a powerful tool
to monitor the state of the environment, allowing researchers to detect
deforestation, classify land cover and estimate forest biomass and carbon and
thus demonstrate the scale of problems and illustrate solutions.
Jack Dangermond, Environmental Systems
Research Institute (ESRI) is recognized for his
commitment to ensuring that international, research, education, and nonprofit
organizations working in the fields of conservation and development have access
to the best geospatial analytical and visualization technology.
SCIENCE AND INNOVATION
Veerabhadran Ramanathan, Professor at
the Scripps Institution of Oceanography, UCSD was
recognized for his pioneering work on black carbon, which included leading a
team that first discovered widespread Atmospheric Brown Clouds (ABCs) and
research into how cutting black carbon can significantly mitigate climate
change India.
INSPIRATION AND ACTION
Carlo Petrini, Founder of the Slow
Food movement is recognized for his visionary work to
improve the efficiency and sustainability of the world's agriculture and food
supply "one bite at a time".
Martha Isabel Ruiz Corzo, Director of
Grupo Ecológico Sierra Gorda is recognized for her work
in the Sierra Gorda region of Central Mexico, which demonstrates how a broad
range of advocacy, public education and income-generation approaches, can
produce support healthy ecosystems and alleviate poverty.
List and details provided by UNEP
Tuesday, September 10, 2013
The urgent need for transportation biologists in India
In India when a new road or bridge project is
planned, there is only perfunctory reference to impact on wildlife. An EIA
(Environmental impact analysis), might be done in some cases to meet the needs
of the statute books, but there is absolutely no proviso for making the roads
and bridges wildlife friendly in its true sense. In several European countries,
US, and Canada, in house transportation biologists are an integral part of the
whole process of roads and bridges building. They see to it that roads and bridges
projects avoid or circumvent sensitive wildlife habitat and help minimize and
mitigate environmental impacts to streams, wetlands, and other prime wildlife
habitats. Sometime exclusive wildlife bridges (ecoduct) are also built. These
wildlife bridges guarantee safe crossing for wildlife in the maze of heavy
traffic and cacophony of highways.
In the Netherlands, which has taken a leading role
in the field of wildlife friendly roads, there are 600 tunnels to direct
wildlife away from highways. Fencing is also resorted to in concert with
tunnels, as good option in guiding wildlife to safe crossing structures and
prevent crossing in vulnerable areas. In wildlifers’ parlance this practice is
called funnelling. Animals’ use of these passages can be optimised by providing
plant cover near the entrances. Reducing the plant cover along road curves and
increasing it along level stretches has been found to be very effective in
bringing down road kills.
I was thrilled to read recently about what Sarah
Piecuch,a transportation biologist working with New York State Department
of Transportation (NYSDOT) did for otters. While involved in a road a
project at Melvin Brook in Clyde, New York, early in the project’s development,
Sarah noticed an otter (Lontra canadensis) kill, at a project site. Her
inquisitiveness led her to a large culvert in the area which was constantly
filled with water. This culvert was interrupting the scent trail of the otters.
Scent trail is very important in the biology of otter. The lack of an upland
area forced the otters to come out of the water and travel over the road
embankment to leave a scent trail. This upland travel made them vulnerable to
road traffic and many were inadvertently getting killed. Sarah explained the
need and ideal parameters for an upland bench to the engineers. The project
engineers were delighted to take up the challenge and came up with an ingenious
upland bench below the culvert. It was fruition of great team work of
biologists and engineers. Sarah identified the need and the engineers
found a perfect solution. This kind of teamwork is what is needed for our roads
and bridges projects and not hastily sewn up EIA.
The transportation biologists have to be involved
right from the planning stages. It is easy to find solutions at the early
stages. Providing enough culverts for wildlife, to use as underpasses,
could come in very handy, as topography has the greatest impact on road kills.
Studies by University of Calgary researchers have found that, small animals
were far less likely to get killed on sections of roads that were raised than
on sections that were level with the surrounding terrain. Engineers and
biologists working as a close knit team could come up with perfect solutions.
Even existing structures can be made wildlife
friendly with innovative planning. Species like barn owls and cormorants very
effectively use the bridges in urban scenarios. Many other birds use the
bridges for perching, nesting and roosting. A transportation biologist can
advise the engineer, how to take in to account the needs of the birds while
repairing or painting the structures. Bridges can provide suitable day and
night roosting habitat for bats.
The avenues of transportation biologists and
engineers working hand in hand are multifarious. Road ecology has become an
important new branch of science and has made great strides abroad. It is high
time we did something along these lines in India also. The time to act is ripe,
as India is on a fast track of infrastructure developments. India should not
lag behind is this sphere. Mitigating interactions between roads and wildlife
is going to be very important in the years to come.
New Avatar
Friends,
After several months break, I am back on this blog. I will be blogging on all related matters of wildlife conservation, instead of concentrating on scientific papers alone. I seek your continued support.
Have a nice day
After several months break, I am back on this blog. I will be blogging on all related matters of wildlife conservation, instead of concentrating on scientific papers alone. I seek your continued support.
Have a nice day
Wednesday, April 18, 2012
Scientific monitoring of Tigers gets a boost in India
WCS/CWS India under the leadership of Dr Ullas Karanth
has been developing new monitoring methodologies for tigers and prey species
for over two decades working in tandem with Karnataka Forest Department. Now National
Tiger Conservation Authority has decided to incorporate some of their key
suggestions as a part of the official protocols.
The key suggestions are
Annual monitoring of tiger source populations will be
done using capture-recapture. Individual identification of tigers will be done
using camera trap data or faecal DNA analysis. These protocols will work in
close association with a national tiger photographic data base repository to be
developed and maintained at NTCA.
Minimum sampling area will be 400 sq km at a time. Sampling
intensity aimed at will be 1,000 trap nights per 100 sq km.
The annual camera trap survey will be completed in
45-60 days.
If deployment of camera traps in an entire reserve –
or parts of it – is not feasible for any reason, faecal DNA samples will be
collected within 45-60 day survey period and analysed to arrive at tiger
numbers.
Protocols have been also laid down for estimating prey
densities using line transect surveys and the use of DISTANCE software.
The icing on the cake is that Dr. Rajesh Gopal (Member
Secretary — NTCA) and Sri PR Sinha (Director - WII) is working hand in hand with
Dr Ullas Karanth in introducing these refinements. Tahrcountry joins other
conservationists in applauding this path breaking team work.
Tuesday, April 17, 2012
Comprehensive landscape assessments of protected area networks
Dynamic performance assessment of protected areas
Christopher P. Barbera, Mark A. Cochranea, b, , Carlos
Souza Jr.b, , Adalberto Veríssimob
Biological
conservation, Volume 149, Issue 1, May 2012, Pages 6–14
For preserving biodiversity and ecosystem services
protected area networks have been established worldwide, but are they effective
in delivering what has been intended? The authors of this paper say empirical
coarse-scale assessments of this question across large regions, or even
globally, tend to answer “yes”, while fine-scale studies of individual
protected areas often and repeatedly answer “no”.
The researchers conducted a first fine-scale analysis
of Brazil’s extensive Amazonian protected area network (1.8 million km2) and quantitatively
estimated conservation effectiveness against the backdrop of changing human
development pressures in the surrounding landscape. The overall network
maintained intact forest cover for 98.6% of protected forest lands. This is in
tune with previous coarse-scale studies. A detailed examination of 474
individual protected areas gave a different picture.
The researchers say many protected areas (544,800 km2)
experience default protection due to their remoteness only. Some others
(396,100 km2) provided highly effective protection in the face of substantial
human development pressure. 12% (38) of
protected areas failed to protect the 27,300 km2 that they encompass. Another
7% (23) provided only marginal protection for 37,500 km2.
Based on their assessment the authors contend that Comprehensive
landscape assessments of protected area networks, with frequent monitoring at
scales matching the patterns of human-caused disturbances, are necessary to
ensure the conservation effectiveness and long term survival of protected areas
in rapidly changing landscapes. The reiterate that the methods presented here
are globally adaptable to all forested protected areas.
Sunday, April 15, 2012
Estimating the population of Emperor penguins using a single synoptic survey
In this piece of path breaking research, the
researchers attempted to estimate the population of emperor penguins (Aptenodytes
fosteri) using a single synoptic survey. They examined the whole
continental coastline of Antarctica using a combination of medium resolution
and Very High Resolution (VHR) satellite imagery to identify emperor penguin
colony locations. Where colonies were identified, VHR imagery was obtained in
the 2009 breeding season. The remotely-sensed images were then analysed using a
supervised classification method to separate penguins from snow, shadow and
guano. Actual counts of penguins from eleven ground truthing sites were used to
convert these classified areas into numbers of penguins using a robust regression
algorithm
Four new colonies were discovered. The location of
three previously suspected sites was confirmed. Total number of emperor penguin
breeding colonies was put at 46. The researchers estimated the breeding
population of emperor penguins at each colony during 2009 and provide a
population estimate of ~238,000 breeding pairs. This is against the last
previously published count of 135,000–175,000 pairs). The researchers say based
on published values of the relationship between breeders and non-breeders, this
translates to a total population of ~595,000 adult birds.
The researchers contend that their work now
provides a comprehensive estimate of the total breeding population that can be
used in future population models and will provide a baseline for long-term
research.
Citation: Fretwell PT,
LaRue MA, Morin P, Kooyman GL, Wienecke B, et al. (2012) An Emperor Penguin
Population Estimate: The First Global, Synoptic Survey of a Species from Space.
PLoS ONE 7(4): e33751. doi:10.1371/journal.pone.0033751
Saturday, April 14, 2012
Opportunity to work in Periyar Tiger Reserve
Young wildlife
biologists, here is an opportunity for you to hone your skills in Periyar Tiger
Reserve, India’s finest Tiger reserve. Periyar Foundation a Government owned public trust with the legality of
the Government organization and flexibility of a good non-governmental
organization is looking for field biologists to work under their “Biodiversity
conservation and Rural livelihood improvement project” (Kerala forest department–
Periyar foundation)
Ecologist
Qualification: Masters Degree in Environmental / Wildlife Sciences
or Forestry (Preference will be given to Ph. D. holders).
Experience: Minimum 3 years of field experience in the
field of ecology preferably in the landscape where Participatory Forest
Management is implemented.
Remuneration: Rs 30,000/- per month.
Project period: 5
years.
Tasks to be carried
out:
• To undertake
analysis, assessment and research on ecology and wildlife biology.
• To distil, document
and support to disseminate the best practices in the Project Area.
• To assist in
conducting trainings in habitat management practices, monitoring of habitats
and wildlife, eco-friendly tourism, to NGOs, local community groups, other stakeholders,
policy makers, senior and mid-level forest officers and field staff and other
development sector agencies.
• To develop field
guides /identification keys on important groups of flora and fauna.
• To conduct impact
assessment of habitat interventions, ecotourism etc.
• To contribute as a
team in curriculum development and preparation of course material.
Candidates who
possess the above qualification may apply with their curriculum vitae to the
Executive Secretary, Periyar Foundation, Periyar Tiger Reserve, Thekkady P.O.,
Kumily, Idukki District, Kerala. Pin – 685536.
The name of the post should be written on the envelope containing
application.
Last date for receipt
of application is 15th April, 2012
Vacancies exist also
for Sociologist / Socio-Ecologist, Regional Planner, Training Officer, Training
Assistant, Field Assistant and Accountant
For more details log
on to http://www.periyarfoundation.org/
Thursday, April 12, 2012
Rare image of a lynx using a highway wildlife-overpass in Banff National Park, Canada
Photo courtesy: Highwaywilding.org
Here is a very rare image of a Canada lynx using an
overpass. The location is the Redearth Creek wildlife overpass on the
Trans-Canada Highway in Banff National Park. The exact timing recorded by the
camera trap is 8:34 a.m. on March 28, 2012. The overpass is one of the six overpasses
in Banff National Park.
Assessing age from colour of coats – A case study involving Thornicroft's giraffes
Here is an interesting piece of research done on giraffes. Prof
Fred Bercovitch from the Primate Research Institute and Wildlife Research
Centre, Kyoto University working in tandem with
local naturalist Phil Berry have discovered that Male
giraffes' age can be estimated by looking at the colour of their coats. The
research was done on Thornicroft's
giraffes found in eastern Zambia's South Luangwa Valley. It is one of the nine recognised
sub-species of giraffe.
The researchers were able to attach specific ages to coat colour
changes. Change in male pelage colouration takes on an average 1.8 years. The males
are completely covered with coal-black blotches at an average age of 9.4 years.
Journal Reference
Darkening
coat colour reveals life history and life expectancy of male Thornicroft's
giraffes
P. S. M. Berry and F. B.
Bercovitch,
Journal of Zoology, Article first published online:
8 MAR 2012 DOI: 10.1111/j.1469-7998.2012.00904.x
Wednesday, April 11, 2012
Vehicular traffic and the use of highway edges by large mammals – Urgent need for holistic EIA
Impact of
vehicular traffic on the use of highway edges by large mammals in a South
Indian wildlife reserve
Sanjay
Gubbi, H. C. Poornesha andM. D. Madhusudan
CURRENT SCIENCE,
VOL. 102, NO. 7, 10 APRIL 2012
Here is a paper that is of great relevance to wildlife
managers.
Expansion and improvement of transport
and other infrastructure networks is a natural accompaniment to the economic
boom that India is experiencing. The authors of this paper say that even though
there are legally mandated assessments of the potential ecological impacts of
such infrastructure projects prior to implementation, rarely are there any post-implementation
assessments of their real ecological impacts.
The researchers present results of a
preliminary study examining the impact of vehicular traffic on the usage of
road edges by large mammals along a highway passing through Nagarahole Tiger
Reserve. Using triggered camera traps
they estimated large mammal encounter rates on
two consecutive sections of the same highway – one closed to vehicular traffic
and the other open to vehicles only during daytime.
The
researchers observed lower encounter rates of chital, gaur and elephants at
camera traps in the highway segment with higher vehicular traffic density. They
add that this is an indication of the fact that these species avoided busy
highways. A more sustained monitoring over time is required
for a better understanding of how these species respond to vehicular traffic
along highways.
State
Forest Departments do not take road kills seriously unless the animal killed is
large. Hence systematic record-keeping of all mortalities due to road kills
would provide the necessary data to assess and mitigate impacts of vehicular
traffic on wildlife. There is an urgent need for scientifically designed
wildlife crossing structures while planning highways through wildlife reserves.
Based on their findings, the researchers
emphasize the importance of continued ecological impact assessments of
development projects to identify and mitigate unforeseen impacts. They make a fervent
plea for an approach that integrates development planning with conservation concerns,
especially where development projects coincide with ecologically critical
areas.
The
prevailing system of rapid EIAs by untrained people, often hired by project proponents
themselves should be dispensed with. What is needed is rigorous and peer-scrutinized
assessments carried out by trained wildlife biologists. The country needs to invest in a more holistic
process of development planning that includes – rather than ignores – the conservation
of its priceless natural heritage.
I thank Annapoorna Daithota of ncf-india for sending me a copy of the paper
Monday, April 09, 2012
Book Recommendation
The other day Girish from Karnataka, one of the
regular readers of this blog, wanted a recommendation of a book on Population
Genetics suited to the needs of graduate students and wildlife managers. Here
is my recommendation “Population Genetics for Animal Conservation”. The book
was published in 2009. This book
integrates 'the analytical methods approach' with the 'real problems approach'
in conservation genetics. If you have better recommendation please pass it on.
Girish would be delighted to get your recommendations.
Population Genetics for Animal Conservation
Giorgio Bertorelle, Università degli Studi di Ferrara,
Michael W. Bruford, Heidi C. Hauffe, Edmund Mach Foundation, Annapaolo Rizzoli
and Cristiano Vernesi
Cambridge University Press
ISBN: 9780521685375
Saturday, April 07, 2012
The Diversity of Sacred Lands in Europe – IUCN WCPA news release
‘The Diversity of Sacred Lands in Europe’, provides a
unique insight into Europe’s often forgotten sacred natural sites. It looks
into their history, importance and the threats they currently face. The book is
a must-read for managers of European protected areas and landscapes and those
interested in the religious and cultural aspects of European natural sites.
Published by IUCN and Metsähallitus Natural Heritage Services of Finland, the
book is part of a series issued by The Delos Initiative of IUCN’s World
Commission on Protected Areas.
Authors of the book place special attention to the
sacred places of the Sámi indigenous people living in northern Finland, Sweden,
Norway and North-West Russia. They also describe sacred natural sites in
Albania, Bulgaria, Czech Republic, Estonia, Finland, Greece, Italy, Latvia,
Lithuania, Norway, Poland, Romania, North-West Russia, Serbia, Slovakia, Spain,
Turkey, and the United Kingdom.
“Sacred natural sites hold traditional and spiritual
values that are often hidden from the modern world and that are deeply linked
to ecosystem and landscape management”, says Gonzalo Oviedo, IUCN's senior
adviser for social policy. “These values are extremely important for Europe’s cultural,
spiritual and natural heritage. They include some unique knowledge of
traditional medicine, livestock breeding, wildlife and agricultural cycles.
Greater recognition of this knowledge and better management of these areas can
help us sustainably conserve our natural heritage, especially in the time of
increasing climate change.”
“The importance of sacred natural sites is rarely
recognized these days and their values are often ignored in the face of
expanding urbanisation and insensitive development initiatives”, says Josep
Maria Mallarach, one of the editors of the book and coordinator of The Delos
Initiative. “Tourism also puts pressure on these unique places, causing
physical and spiritual degradation.”
“Integrated management of the sites and improved
public awareness can help address these challenges”, says Thymio Papayannis,
co-editor of the book and joint coordinator of The Delos Initiative. “Closer
collaboration between the custodians of sacred natural sites and
conservationists is crucial if we want to safeguard Europe’s unique natural,
cultural and spiritual values of such sites.”
Wednesday, April 04, 2012
Taking into account uncertainties should be a mandatory aspect to include in the viability analysis of populations
Disentangling effects of uncertainties on
population projections: climate change impact on an epixylic bryophyte
Alejandro Ruete,Wei Yang,Lars Bärring,Nils Chr. Stenseth andTord Snäll
Published online before print March
28, 2012, doi:10.1098/rspb.2012.0428Proc.
R. Soc. B
Assessment of
future ecosystem risks assumes great significance against the backdrop of
climate change. This assessment should take in to account relevant uncertainty sources.
Studying joint effects of climate variables and using modelling techniques that
allow proper treatment of uncertainties becomes imperative.
Here the researchers
investigated the influence of three of the IPCC's scenarios of greenhouse gas
emissions (special report on emission scenarios (SRES)) on projections of the
future abundance of a bryophyte model species. They also compared the relative
importance of uncertainty sources on the population projections.
According to
the researchers the whole chain global climate model (GCM)—regional climate
model—population dynamics model is addressed. The researchers say uncertainty
depends on both natural- and model-related sources, in particular on GCM
uncertainty. Ignoring the uncertainties gives an unwarranted impression of
confidence in the results. The researchers affirm that most likely population
development of the bryophyte Buxbaumia viridis towards the end
of this century is negative. Even with a low-emission scenario, there is more
than a 65 per cent risk for the population to be halved.
The
conclusion of a population decline is valid for all SRES scenarios
investigated. The researchers say uncertainties are no longer an obstacle, but
a mandatory aspect to include in the viability analysis of populations.
Subscribe to:
Posts (Atom)





