Biodiversity is the variability found within a
species, between species and the variability among ecosystems. It plays an irreplaceable role in our lives
as we depend on biodiversity for many requirements including food, energy,
medicine and other material. It also has a significant importance in the
traditional culture, religion and social practices. Apart from the tangible and
intangible resources that directly affects us biodiversity also provides
priceless services as ecosystem services which are crucial to maintain the
natural balances on earth. Therefore, maintaining the biodiversity in a natural
state and allowing it to alter following the natural patterns is critical for
the existence of all life in the biosphere.
However, in recent centuries humans have been
altering the natural systems and endangering the biodiversity around them in a
drastic manner resulting in a rapid loss of biodiversity. This has been
intensified since the industrial revolution and many accepts that we are
causing a mass extinction event. Currently biodiversity loss has been
identified as one of the leading global environmental issues we are facing. Anthropogenic
activities such as habitat loss and degradation, spread of invasive alien
species, climate change, over exploitation and environmental pollution are the
major drivers of the ongoing biodiversity loss.
Conservation biology is a crisis discipline
that developed in recent decades as a response to this ongoing crisis of
biodiversity loss with the aim of combating it. Conservation biologists are
attempting to minimize the negative human impact on biodiversity and allowing
the natural dynamics with a scientific approach. However, as anthropogenic
causes are the main driving forces behind the ongoing biodiversity loss, the
role of conservation biologists is becoming more challenging day by day.
Human population on earth has undergone a
rapid expansion in the last centuries mainly with the recent development in
health and agriculture. At the dawn of the 21st century the world
population was around 6 billion but it reached 7.3 billion by 2015. Even though
the rate of human population growth is declining at present, the magnitude of
the current population is so significant that it is impacting on the earth in
severe scales. Fulfilling the needs and wants of this huge population of one
species is having a negative effect on many other species as well as ecosystems
putting them on a knife-edge situation.
Many species are already facing a severe
threat of extinction. The global and local red lists made and updated time to
time are alerting the society including the conservation biologists on the
species which are at the brink of extinction. However, conserving these species
and minimizing their extinction risk is not easy as it has to be done in a way
that does not interfere the human activities to an extent that would cause a
negative reaction from the stakeholder communities. Therefore, conservation
biologists have a challenge to maintain the social, economical and ecological
balances in order to make conservation a reality.
Agricultural lands are expanding in certain
areas to supply the food resource requirement of the human population and human
settlements are similarly expanding. Altogether, with other human land-uses,
these are consuming about 13 million hectares of natural forests annually and
converting them to different land-uses. The expansion of human modified
land-uses are pressing the wildlife to their survival and causing a conflict
among humans and wildlife. In other areas, agriculture is becoming intensified
using the novel agricultural practices and human settlements are becoming
concentrated to urban areas generating higher pollution and causing a chain of
negative effects on biodiversity. Over exploitation of biological resources,
which is evident in many cases including the well known “fishing down the food
web” are also throwing out the natural balance in ecosystems. Conservation
biologists are facing the challenge of establishing a balance to these systems
which is in favour of biodiversity but also fulfills the growing requirements of
the human population in the 21st century.
Conservation is not an activity that can be
achieved single-handedly. Conservation biologists require the support and
commitment from various stakeholders to make a significant positive effect on
the biodiversity. These stakeholders include local communities, government
authorities, political movements, industries, funding agencies and many others. However,
these stakeholders may not share the same objectives or views that the
conservation biologists have. With their own agendas and targets, some of them
are in a state of competition with the many competitors in a large population
and some are trying to meet the demands of the growing population. This will be
even more significant in developing countries where poverty and political
unrest are common and widespread issues. Therefore, bringing these different
minded stakeholders together and making a positive dialog between them is
challenging for the conservation biologists and it requires many skills.
One thing we have to understand is that the
world has already being changed drastically to meet the needs of the human
population and the 21st century will not see any significant
difference in this process. Understanding this, 21st century conservation
biologists and the society must find ways to carry out their activities with a
minimal effect on biodiversity thus the benefits of the biodiversity will be
perpetual. In order to achieve this, novel methods must be identified and
developed to attract and sustain biodiversity within human modified landscapes
and incorporate them to the biodiversity conservation efforts. This is a challenging
task for everyone including the conservation biologists as these methods will
have to be applied for different situations and will require specific
modifications for different cases. This also involves the challenge of
overcoming the mental hurdle that would prevent us from seeing human-modified
land-uses as different units from areas for conservation.
With the growing human populations, complex
human life styles and novel needs of the 21st century humans, the
conservation biologists and the society are in a very challenging position to
minimise the loss of biodiversity and ensure its sustainability. Therefore,
identifying these challenges and finding methods to overcome them are important
in order to make conservation a reality.