Archive for the 'Pollution' Category

UN Conference on Sustainable Development: highlights of the Rio+20 final document

At the UN Conference on Sustainable Development in Rio (June 2012), binding new international agreements were not agreed upon, which was disappointing. Nevertheless, the final document is worth summarising in order to highlight the most important common views of the world´s governments as regards sustainable development and the marine environment. Luckily, in the management of seas and oceans important progress was achieved. The following is a summary – with special reference to coasts, seas and oceansof  the final document “The Future We Want”:

The document states that for sound development in general, holistic, integrated and sustainable management of natural resources needs to be promoted. At the same time, economic, social and human development should be supported.  Also, the international community is asked to move the sustainable development agenda forward, through the achievement of internationally agreed goals including the existing Millennium Development Goals. Green economy in the context of sustainable development and poverty eradication is mentioned as one of the important tools available for achieving sustainable development.

The United Nations Conference on Sustainable Development was held in Rio de Janeiro in June 2012. The achievements of the meeting were minor. Only in the “seas and oceans” action area important progress was achieved. Aerial photo of Rio (c) 2012 copyright Erkki Siirila.

The Rio participants recognise the key role that improving energy efficiency plays. This includes the increasing share of renewable energy and cleaner, more energy-efficient technologies. Climate change as a persistent crisis is acknowledged: the global nature of climate change calls for the widest possible cooperation by all countries and their participation in an effective international response. Naturally, reduction of greenhouse gas emissions is needed. Also the related urgent needs of Small Island Developing States (SIDS) are mentioned in the final document.

The need for effective, transparent, accountable and democratic natural resources´ management institutions is mentioned in the document. So is the need for contributions towards sustainable development by both the public/private sectors and the scientific/technological communities. We are also reminded of the important role of citizens at the grass-root level, e.g. fishers, in the development of production activities which are environmentally more sound. The valuable contributions by  NGOs in promoting sustainable development are acknowledged.

The establishment of UNEP as a permanent UN organisation (instead of being a non-permanent programme) was not achieved, but it was decided that UNEP would be strengthened. In addition, the participants decided to establish an intergovernmental high-level political forum replacing the current UN Commission on Sustainable Development.

In the final document, the participating states recognise the severity of global biodiversity loss and degradation of ecosystems: this underlines the importance of biodiversity conservation, enhancing habitat connectivity and building ecosystem resilience.

In the Oceans and Seas chapter of The Future We Want, important progress can be observed. To begin with, the participating states commit to protect and restore the health, productivity and resilience of oceans and marine ecosystems, and to maintain their biodiversity for the conservation / sustainable use by the present and future generations. Furthermore, the participants agree to apply an ecosystem approach and the precautionary principle in marine management.

The Rio conference delegations recognise the importance of UNCLOS (Law of the Sea) in advancing sustainable development and they emphasise the need for cooperation in marine scientific research. The states also support the Regular Process for Global Reporting and Assessment of the State of the Marine Environment (established under the UN General Assembly) and look forward to the completion of its first global integrated assessment by 2014.

In Rio de Janeiro, the participating states supported the Regular Process for Global Reporting and Assessment of the State of the Marine Environment. The states look forward to the completion of the first global integrated assessment by 2014. The marine image was taken off Callao, Peru, photo copyright (c) 2012 Erkki Siirila.

In the seas and oceans chapter, the importance of the conservation / sustainable use of marine biodiversity beyond areas of national jurisdiction is recognised. Building on the work of an international working group (and before the end of the 69th Session of the United Nations General Assembly) the Rio participants commit to address this issue on an urgent basis.

The states also note with concern that the health of the oceans and marine biodiversity are negatively affected by marine pollution. The final document mentions marine debris, plastic, persistent organic pollutants, heavy metals, and nitrogen-based compounds. The sources mentioned include marine and land-based sources, including shipping and land runoff. The participants commit to take action to reduce the incidence and impacts of such pollution on marine ecosystems. The relevant measures would include implementation of IMO conventions and the follow-up of relevant initiatives such as the Global Programme of Action for the Protection of the Marine Environment from Land-based Activities. With the help of scientific assessments, the states further commit to take action to significantly reduce marine debris by 2025.

In the seas and oceans chapter the participants note the significant threat which alien invasive species pose to marine ecosystems, and commit to implement measures to prevent their introduction. The management of the adverse environmental impacts will be improved including those alien species adopted in the framework of IMO.

Sea level rise and coastal erosion are noted as serious threats for many coastal regions and islands particularly in developing countries. International action to address these challenges is called for in the final document.

The participating states also call for support to initiatives that address ocean acidification and the impacts of climate change on marine and coastal ecosystems and resources. They reiterate the need to work collectively to prevent further ocean acidification, as well as to enhance the resilience of marine ecosystems and of the communities whose livelihoods depend on them. The importance of marine scientific research, monitoring and observation of ocean acidification and of particularly vulnerable ecosystems through international cooperation are mentioned.

In the Rio final document the participating states stress their concern about the potential environmental impacts of ocean fertilization. They recall the decisions related to ocean fertilization adopted by the relevant intergovernmental bodies, and decide to continue addressing ocean fertilization with utmost caution. The precautionary approach will be applied.

In Rio the participating states promised to intensify the efforts to meet the 2015 target as to maintenance or restoring fisheries stocks to levels that can produce maximum sustainable yield on an urgent basis. The photo of the fishing vessel is from the Falkland Islands (Islas Malvinas), copyright (c) 2012 Erkki Siirila.

The Rio participants commit, on an urgent basis, to intensify the efforts to meet the 2015 target as to maintenance or restoring fisheries stocks to levels that can produce the maximum sustainable yield. The foreseen time frame is “the shortest time feasible”. To achieve this, the states commit to urgently develop and implement science-based management plans. Fisheries reduction and suspension are listed as management methods. The importance of by-catch reduction and the control of destructive fishing practices are mentioned as well as the importance of impact assessments.

Relating to UNCLOS, the Rio delegations urge states to fully implement the 1995 Agreement on the Conservation and Management of Straddling and Highly Migratory Fish Stocks. Furthermore, all States are called upon to implement the Code of Conduct for Responsible Fisheries and the corresponding FAO International Plans of Action and technical guidelines.

The final document acknowledges that illegal, unreported and unregulated (IUU) fishing deprives many countries of a crucial natural resource and remains a persistent threat to their sustainable development. A recommitment to eliminate IUU fishing is presented. Reference is made to the Johannesburg Plan of Implementation which aims at preventing and combating these practices in the following ways: a) by implementing national and regional action plans in accordance with FAO’s international IUU combat plan, b) by identifying vessels engaged in IUU fishing, c) by depriving offenders of the benefits accruing from IUU fishing, and d) by cooperating with developing countries to systematically identify needs and build capacity (monitoring, control, surveillance, compliance and enforcement systems).

The Rio delegations recognise the need for transparency and accountability in fisheries management by regional fisheries management organizations (RFMOs). The efforts already made by those RFMOs that have undertaken independent performance reviews are recognised. A call is presented on all RFMOs to regularly undertake such reviews, publish the results and implement the recommendations.

Furthermore, the Rio final document reaffirms the Johannesburg Plan of Implementation as to elimination of subsidies that contribute to illegal, unreported, and unregulated fishing and overcapacity, mentioning the importance of this sector to developing countries. Reference is made to the WTO Doha Development Agenda and the Hong Kong Ministerial mandates for more vigorous control of fisheries subsidies. Prohibition of subsidies that contribute to overcapacity and over-fishing is mentioned as a control measure. States are also encouraged to eliminate subsidies that contribute to overcapacity and over-fishing, to refrain from introducing new such subsidies and to refrain from extending or enhancing existing subsidies.

A commitment to ensure access to fisheries and corresponding markets by fishers (subsistence, small-scale, artisanal) and women fish workers and indigenous peoples is also presented, highlighting the needs of these communities in developing countries and small island developing states.

The importance of coral reef conservation and marine protected areas is highlighted in the final document of the Rio conference on sustainable development. Image from a Red Sea coral reef in Egypt, photo copyright (c) 2012 Erkki Siirila.

As to coral reefs and mangroves, the Rio delegations recognise the significant economic, social and environmental contributions of coral reefs, in particular to islands and other coastal states, as well as the significant vulnerability of the reefs and mangroves to impacts including from climate change, ocean acidification, overfishing, destructive fishing practices and pollution. Support for international cooperation is expressed in order to conserve coral reef and mangrove ecosystems and to realise their social, economic and environmental benefits. Facilitation of technical collaboration and voluntary information sharing are mentioned as supporting measures. Surprisingly, sea grass beds are not separately mentioned in the Rio final document. (The importance of healthy sea grass beds as carbon sinks in fighting global climate change has recently been acknowledged by the marine science research community).

In the seas and oceans chapter of The Future We Want, the delegations reaffirm the importance of area-based conservation measures, including marine protected areas, consistent with international law and based on best available scientific information. The participants note decision X/2 of the 10th Meeting of the Conference of the Parties to the Convention on Biological Diversity, that by 2020, 10 percent of coastal and marine areas, especially areas of particular importance for biodiversity and ecosystem services, are to be conserved through effectively and equitably managed, ecologically representative and well-connected systems of protected areas and other effective area-based conservation measures.

Finally, it may be considered surprising that the importance of managing the sea-land interface as a special area was not mentioned in The Future We Want. As the coastal zone is an area of many opportunities, user conflicts, resource degradation and lost opportunities, it would have been natural to say something in the Rio final document about the need for integrated coastal zone management.

Coral conservation in Honduras: building on local roots is important

“We have got one of the best coral reefs in the Caribbean”, says Nelbin Bustamante from the Prolansate Foundation and Amatela reef conservation group of the Town of Tela, Honduras.  More in detail, Mr. Bustamante summarises the good news of a recent underwater study on the Tela reefs in the following words: “The live coral cover on our reefs is nearly 70 per cent per square metre”. This high number was registered on the Capiro Reef just seven kilometres from the city centre.

Image

An offshore reef near Tela, Honduras. Photographer and copyright (c) 2012 Erkki Siirila.

Nevertheless, all the evaluation results were not positive. Mr. Bustamante says: “It could also be observed that the number of herbivorous and commercial fishes had reduced. Their biomass had gone down.”

As regards the threats, two main threats were identified in the study. One was the loss of forest cover. The other one was the lack of wastewater treatment. The Tela wastewaters flow directly into the sea and coral reefs. In addition to soil, the runoff contains many chemicals including fertilizers. The nutrients in the runoff may facilitate algal growth on the reefs as, at the same time, the levels of herbivorous fishes consuming the algae are lower than normal. Overfishing is an additional threat which needs to be controlled in Tela.

In any case Tela is a good and encouraging example in a world where the coral reefs are threatened by high fishing pressure, global climate change and other side effects of the growth of human societies. Off Tela, fairly healthy coral reefs can still be found and new awareness is creating motivation to protect the reefs.

Mr. Marcello Dicunta Servellón, who operates a dive centre in Tela, is satisfied: “Healthy coral reefs represents incredible opportunities. One of the most obvious ones is recreational diving. A well-managed dive industry on healthy reefs can result in high economic growth for the community.”

A Spanish-speaking documentary (Corales para amar – Tela protege sus arrecifes) with the above-mentioned content can be watched on Youtube:

Human wastewaters infect elkhorn coral

A human pathogen has been shown to contribute to the degradation of elkhorn coral (Acropora palmata) colonies in the Caribbean Sea. The pathogen Serratia marcescens is known to be present in human wastewaters, which enter the coastal marine areas untreated in many parts of the Caribbean. In the recent study by K.R. Sutherland et al., strain PDR60 of the pathogen was shown to cause disease signs in A. palmata colonies in as little as four or five days, when the surrounding waters were polluted with S. marcescens.

In the Caribbean the lack of wastewater treatment is a common problem. This colony of elkhorn coral looks healthy in spite of the fact that raw sewage enters the sea 100m from the reef. Photo taken in Utila, Honduras, copyright (c) 2011 Erkki Siirila.

In 2003 there was an outbreak of this coral disease called acroporid serratiosis (APS). During the episode, the corallivorous snail Coralliophila abbreviata and stony coral Sideastrea siderea were noticed to be play a role in the development of the disease. Now, in aquaria experiments, wastewater has been demonstrated to be a definitive, direct source of the disease, while C. abbreviata and S. siderea are known to act as vectors and reservoirs, which may also to contribute to the infection of A. palmata.

The research results by K.R.Sutherland et al. published in 2011 demonstrate for the first time that a human pathogen can be passed from us humans to marine invertebrates and infect them. The authors of the study “Human Pathogen Shown to Cause Disease in the Threatened Eklhorn Coral Acropora palmata” say that “these findings underscore the interaction between public health practices and environmental health indices such as coral reef survival”.

A direct link to the article is here:  Elkhorn and sewage

Plastic pollution threatens marine life and us

Plastic is everywhere. It is difficult to buy anything without also buying plastic. If the product is not made of plastic, the packing material is.

Plastic is strong, versatile and inexpensive. It is also lightweight and moisture resistant. Being so durable and so widely used, plastic materials ultimately become waste which is present everywhere and which degrades very slowly.

Plastic bottles floating in the river. Photo from the Rio de la Plata waterfront, Buenos Aires, Argentina, (c) 2010 Erkki Siirila.

In the ocean, plastic debris is believed to kill 100,000 marine mammals every year, as well as millions of birds and fish.  Nevertheless, the most dangerous aspect of the plastic debris is hidden from our eyes: it is the microscopic fragmented plastic particles, which float in the sea and are transported thousand of nautical miles in the ocean currents.

There are more and more of this kind of microscopic plastic particles everywhere. These particles cannot be removed from the ocean and they are believed to be more toxic than previously thought.

In the sea, the microscopic plastic particles are ingested by the small animals of zooplankton at the bottom of the food chains. Through fish and other larger marine animals these food chains lead to us humans. When we do not manage the plastic waste in a sustainable manner, we are polluting not only the oceans but also ourselves.

The plastic material entering the world oceans is an increasing problem around the world. Photo from Buenos Aires, Argentina, (c) 2010 Erkki Siirila.

An excellent Coastalcare summary (written by  Claire Le Guern Lytle) of plastic pollution and its consequences in the marine environment can be read here:

http://coastalcare.org/2009/11/plastic-pollution/