Printer Friendly

Loss of biodiversity puts current, future generations at risk.

An alarming report about the massive loss of biodiversity around the world warns that future generations will be at risk if urgent action isn't taken to protect the more than 1 million species of plants and animals threatened with extinction.

Such extinction could happen 'within decades' and could affect 40 percent of amphibian species, more than a third of marine mammals and nearly 33 percent of reef-forming corals, said the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES).

'Biodiversity is important for human well-being, and we humans are destroying it,' Sir Robert Watson, the outgoing chairman of the IPBES, when the report was launched last week.

The body, formed in 2012 and comprising more than 130 government members, stated in its comprehensive review that nature is 'declining globally at rates unprecedented in human history.'

The IPBES Global Assessment Report added that the rate of species's extinction is also 'accelerating,' and that this entails serious effects for the world's human population as well, with an increasing impact on food, water and energy security, and on peace and stability.

'It's a security issue in so far as the loss of natural resources, especially in poor, developing countries, which can lead to conflict,' Watson said.

In a media briefing at the end of a six-day plenary-hosted by the United Nations Educational, Scientific and Cultural Organization (Unesco) in Paris-scientists called for bold measures at all levels of society to save the planet's biodiversity, putting the issue at the same level of urgency as climate change.

'Unless we act now, we will undermine human well-being for current and future generations,' Watson said. 'It's a moral issue: We should not destroy nature. And it's an ethical issue because the loss of biodiversity hurts the poorest of people, further exacerbating an already inequitable world.'

While climate change up to now has not been a dominant factor in biodiversity loss, it is expected to equal or surpass the issues of overfishing, pollution of sea and land (with toxic waste, plastics and heavy metals), the spread of invasive species decimating native ones, and the destruction of natural forests, the IPBES said.

Scientists said the 'picture is less clear' for insect species, but the available evidence points to about 10 percent being threatened.

IPBES experts further state that at least 680 'vertebrate species' (or species with backbone) have been driven to extinction since the 16th century, and more than 9 percent of all domesticated breeds of mammals used for food and agriculture had become extinct by 2016, with at least 1,000 more breeds still threatened.

This has happened at a faster rate than in previous eras.

The 455 experts involved in the report analyzed upwards of 15,000 scientific papers among their fields of research, said IPBES Executive Secretary Anne Larigauderie. They ranked the five 'direct drivers of change in nature with the largest relative global impacts' on the world's estimated 8 million species.

These five drivers are: changes in land and sea use; direct exploitation of organisms; climate change; pollution; and invasive alien species, according to the report.

Ocean pollution, with toxic waste and tons of plastic devastating marine life, is now common knowledge, but perhaps people are less aware that the use of fertilizers has created some 400 coastal ecosystem 'dead zones,' affecting 245,000 square kilometers (sq km).

Despite the disturbing statistics, Larigauderie said the IPBES still wished to send a message of hope.

'We don't want that people feel discouraged, that there's nothing that can be done, that we've lost the battle, because we've not,' she said.

Conservation efforts over the past decade have reduced the extinction risks for mammals and birds in 109 countries, and more than a hundred highly threatened birds, mammals and reptiles are 'estimated to have benefitted from the eradication of invasive mammals on islands,' according to IPBES experts.

They emphasized that there was still time to give nature a chance to recover if the world takes transformative action for global sustainability, including the use of renewables, ecological farming methods and reducing run-off pollution into oceans.

'What we offer is scientific evidence never put together before,' said Eduardo S. Brondizio, one of the three cochairman of the report and professor of anthropology at Indiana University.

'This is evidence that can be taken seriously, and people can be awakened to take action,' Brondizio told IPS. 'This report is important for change.'

During the briefing at Unesco, Brondizio had clear words for society at large and for the financial sectors and policy-makers.

'We need to change our narratives,' he said. 'Both our individual narratives that associate wasteful consumption with quality of life and with status, and the narratives of the economic systems that still consider that environmental degradation and social inequality are inevitable outcomes of economic growth.'

'Economic growth is a means and not an end,' he added. 'We need to look for the quality of life of the planet.'

He said that 'positive incentives' were required to 'move away from harmful subsidies' that were contributing to unsustainable business models.

The report says there has been a 15-percent increase in global per-capita consumption of materials since 1980 and a 300-percent increase in food crop production since 1970, reducing the habitat of some species and causing pollution through fertilizers.

Meanwhile, 85 percent of wetlands present in 1700 had been lost by 2000, and 3.5 percent of domesticated breeds of birds were extinct by 2016.

Among the 'cross-sectoral solutions' that the report proposes, Brondizio highlighted complementary and interdependent approaches to food production and conservation, sustainable fisheries, land-based climate-change mitigation and 'nature-based' initiatives in cities-which are crucial for overall sustainability.

He pointed out that over the past decade, the 'largest portion of urban growth has been in the urban South,' with the largest portion being among the poor who live in cities with stressed environmental issues.

If adequate action isn't taken to halt the loss of biodiversity in cities, to deal with climate change and to improve the quality of life for urban residents, the negative impact will be globally felt, he said.

Brondizio equally called for the need to recognize the knowledge, innovations and practices, institutions and values of indigenous peoples and local communities.

'They are equal partners in this journey, and we need their inclusion and participation in environmental governance,' he said.

Also addressing the report, Unesco's Director General Audrey Azoulay stressed the importance of education in ensuring sustainability and of sharing knowledge to heighten awareness.

'Following the adoption of this historic report, no one will be able to claim that they did not know. We can no longer continue to destroy the diversity of life. This is our responsibility toward future generations,' she said.

Here are four ways humanity depends on nature, according to the report and scientists:

Food

Nearly all food comes directly from nature, said report coauthor Kai Chan, an environmental scientist at the University of British Columbia. Even though overall the world is growing more food, pressure on crops from pollution, habitat changes and other forces has made prices soar and even caused food riots in Latin America, he said.

Pollinators across the globe, not just bees, are in decline. Three quarters of the world's food crops, including fruits, vegetables, coffee and cocoa, require pollination. The report said pollinator loss could cost the world $285 billion to $577 billion a year.

Medicine and health

About 70 percent of the drugs used to fight cancer 'are natural or are synthetic products inspired by nature,' the report said. About 4 billion people rely primarily on natural medicines.

George Mason University ecologist Thomas Lovejoy points to a single heat-thriving microbe that comes out of Yellowstone National Park's hot springs. Pieces of its genetic code are the key to a scientific technique called polymerase chain reaction that is used for medical, genetic and forensic tests and much of modern biotechnology.

'Nature underpins all dimensions of human health,' the report said.

Fighting climate change

The world's forests and oceans suck nearly 6.2 billion tons (5.6 billion metric tons) of heat-trapping carbon dioxide out of the air each year, the report said. That's about 60 percent of what humans produce through burning fossil fuels.

Earth would be warming more and faster without forests and oceans, scientists said.

Climate change and biodiversity loss are equally huge environmental problems that make each other worse, report Chairman Watson said.

Storm protection

People can build expensive time-consuming sea walls to fight the rise of oceans from climate change, or the same protection can be offered by coastal mangroves, the report said.

But mangroves are in trouble, Watson said.

'They often act as a nursery for fisheries basically,' Watson said. 'And they clearly help to protect land from severe weather events and storm surges from the sea.'

The problem, he said, is that many mangrove systems have been converted to shrimp farms, leaving the land vulnerable to storm surges and devoid of biodiversity.

Living planet

People may think of biodiversity or endangered species as something detached from their daily lives. But those people don't understand that Earth functions as a 'living planet' with many parts dependent on each other, George Mason's Lovejoy said.

'We're here in Paris. Can you experience Paris without nature?' asked Brondizio. 'Every place we turn here we see biodiversity exposed to us in the streets. When we open the tap here, we drink excellent water. When we look at the parks, when we look at the atmosphere here in the city, it's all about nature.'
COPYRIGHT 2019 Knowledge Bylanes
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2019 Gale, Cengage Learning. All rights reserved.

Article Details
Printer friendly Cite/link Email Feedback
Publication:Business Mirror (Makati City, Philippines)
Date:May 13, 2019
Words:1826
Previous Article:There's a lot to be done to make Manila Bay 'swimmable'.
Next Article:Asean strategizes to meet 2050 Vision on biodiversity.
Topics:

Terms of use | Privacy policy | Copyright © 2019 Farlex, Inc. | Feedback | For webmasters