{"id":199137,"date":"2015-08-13T13:30:11","date_gmt":"2015-08-13T16:30:11","guid":{"rendered":"http:\/\/revistapesquisa.fapesp.br\/?p=199137"},"modified":"2015-10-08T14:42:53","modified_gmt":"2015-10-08T17:42:53","slug":"in-the-mud-and-sand-of-araca","status":"publish","type":"post","link":"https:\/\/revistapesquisa.fapesp.br\/en\/in-the-mud-and-sand-of-araca\/","title":{"rendered":"In the mud and sand of Ara\u00e7\u00e1"},"content":{"rendered":"
\"The

Eduardo Cesar<\/span>The beach exposed: at low tide, the bay is transformed into a muddy bog. In the distance, the port of S\u00e3o Sebasti\u00e3oEduardo Cesar<\/span><\/p><\/div>\n

in S\u00e3o Sebasti\u00e3o, SP<\/em><\/p>\n

When the tide is low, Ara\u00e7\u00e1 Bay is transformed. The water recedes and the sandy, pebble-strewn beach turns into a muddy bog hundreds of meters long. Ahead, one can see the ships entering and leaving the Port of S\u00e3o Sebasti\u00e3o, to one side, and fishing boats near the mouth of the bay, which is framed by forests, houses and high rock walls. This 500,000-square-meter inlet in the city of S\u00e3o Sebasti\u00e3o on the northern coast of the state of S\u00e3o Paulo has revealed a surprising diversity of life forms, some of which are sustained by the polluted discharge from household and port sewerage systems.<\/p>\n

The debris carried into the bay from the M\u00e3e Isabel creek appear to benefit some animal groups, such as the marine worms Heteromastus<\/em> filiformis<\/em> and Laeonereis culveri<\/em>, and the microcrustacean Monokalliapseudes<\/em> schubarti<\/em>. But they can be harmful to other groups that are ecologically important or endangered, such as the marine worm species Eunice sebastiani <\/em>and Diopatra cuprea<\/em>\u2014which look like bristly earthworms. Since 2012, the 170 researchers led by Cec\u00edlia Amaral, a biologist with the Institute of Biology at the University of Campinas (Unicamp), have been investigating the physical, chemical, geological and socioeconomic factors that influence the dynamics of Ara\u00e7\u00e1. Their biodiversity inventory of the bay has enabled them to identify 1,368 species or organisms.<\/p>\n

\"058-061_Baia<\/a>Most of these creatures are benthos, a group of organisms that live along rocky coasts, in mangrove stands and among grains of sand. A total of 56 species were found for the first time, including Jebramella angusta<\/em>, a transparent worm with whitish tentacles that lives on rocks or in shell fragments. On the basis of the research conducted in this bay in 1950, Amaral regards Ara\u00e7\u00e1 as one of the most biodiverse coastal regions in Brazil. Much of the data compiled from the project she heads is presented in the book A vida na Ba\u00eda do Ara\u00e7\u00e1 <\/em>[Life in Ara\u00e7\u00e1 Bay], published in S\u00e3o Paulo on August 5, 2015.<\/p>\n

In 2014, the Office of the State Prosecutor for the Public Interest used the biodiversity data from the bay to support an environmentally-based challenge to an application for another port expansion, which the Companhia Docas de S\u00e3o Sebasti\u00e3o, the state-run port administrator, considered essential in order to receive larger vessels. The expansion, proposed by the state government in 2011, would double the size of the 400,000-square-meter port. After reviewing the environmental impact report prepared by Companhia Docas, the Brazilian Institute of the Environment and Renewable Natural Resources (IBAMA) granted a preliminary permit in December 2013, enabling work to begin on two of the four phases of the project.<\/p>\n

\"Residents

Eduardo Cesar<\/span>Residents of the bay. Teot\u00f4nio Jesus digs on the beach in search of cocklesEduardo Cesar<\/span><\/p><\/div>\n

In a press release to Pesquisa FAPESP<\/em>, Companhia Docas said that the Preliminary Environmental Permit issued by IBAMA was based on the Environmental Impact Study and the respective Environmental Impact Report drawn up for the project by a multidisciplinary team of some 80 highly qualified professionals, including biologists, geologists, geographers, oceanographers, economists, agronomists, and fishery, environmental, civil and forestry engineers.<\/p>\n

According to the press release, the most recent version of the project would preserve the rocky areas that surround the bay, as well as its two small islands and four beaches. In addition, according to Docas, \u201cover the course of the permit process, which began in 2008, the initial project was refined specifically to provide for the most environmentally feasible option, taking into account the technical factors, impact assessment, and engineering and economic considerations. The project evolved to allow for enormous environmental benefits, in particular the drastic reduction of its operational footprint in Ara\u00e7\u00e1 Bay, from 84% down to 34%.\u201d<\/p>\n

\"marine

Gabriel Monteiro<\/span>Marine worm Diopatra aciculata<\/em> and microcrustacean Monokalliapseudes schubarti<\/em>, abundant in the regionGabriel Monteiro<\/span><\/p><\/div>\n

According to Antonio Carlos Marques, director of the Center for Marine Biology at the University of S\u00e3o Paulo (USP), that figure applies only to the first two phases of the port expansion, not the whole project.<\/p>\n

If it is fully approved, the port expansion would involve construction of a concrete slab supported on 17,000 piles embedded into the ocean floor, as an alternative to building earthworks in the bay\u2014the proposal initially considered.<\/p>\n

Marques thinks that embedding piles would compromise the water exchange in the bay and prove harmful to the communities of organisms and fish stocks in the region. There could be other effects as well. \u201cMaking perforations in the bed of the bay to install piles would mean moving about 140,000 cubic meters of sediment from the bottom of the bay,\u201d he says. \u201cThis would release polluting substances that would rise to the surface and alter the current physical makeup of the area.\u201d But according to Companhia Docas, the use of piles \u201cwould facilitate water and nutrient exchange with the mangroves, which would promote the preservation of local animal and plant life and the establishment of aquatic fauna\u2014essential ingredients for maintaining and strengthening the trophic food chain.\u201d<\/p>\n

Amaral points to another possible effect of port expansion: the proposed slab over the bay would shade a large area of the water. \u201cWithout sunlight, algae would be unable to carry out photosynthesis and would die,\u201d she says. \u201cThe region would turn into a dead zone as a result,\u201d concludes Alexander Turra, a biologist at the Oceanographic Institute of USP (IO-USP) and a member of Amaral\u2019s team. Like Marques, he questions IBAMA\u2019s environmental permit approval process.<\/p>\n

The debate goes on. The Office of the State Prosecutor for the Public Interest had used the arguments posed by the researchers studying the region to challenge the preliminary permit granted by IBAMA. In July 2014, the permit was suspended by preliminary injunction until the case is decided in court.<\/p>\n

\"Residents

Eduardo Cesar<\/span><\/a> Panoramic view of the bayEduardo Cesar<\/span><\/p><\/div>\n

Dwidling mangroves<\/strong>
\nThe mangrove stand at Ara\u00e7\u00e1 has been shrinking for at least five decades. \u201cThe size of the mangrove area around Ara\u00e7\u00e1 Bay has been reduced by 70% since the 1960s,\u201d says Caiu\u00e1 Mani Peres, an oceanographer and member of Turra\u2019s team at IO-USP. Based on historical photographs and satellite images, Peres concluded that the loss of mangroves may have been the effect of a combination of environmental impacts, such as the accumulation of trash and oil deposited there by the waters of the bay, and changes in the sediment caused by the construction of an underwater effluent outlet and other port expansion work begun in 1955.<\/p>\n

\u201cA lot has changed in recent times,\u201d says Teot\u00f4nio Nobre de Jesus, a fisherman who was born in S\u00e3o Sebasti\u00e3o. At 69, his skin weathered by the sun, Mr. Teot\u00f4nio, as he is called, spends the day crouching on the beach, sifting through the mixture of mud and sand with his hands as he searches for cockles, mollusks whose shells display white veining and small brown and black ridges, scientifically known as Anomalocardia brasiliana<\/em>. \u201cLook how much I\u2019ve already caught today,\u201d he says on the afternoon of July 20, displaying a bucket with dozens of cockles gathered since morning. In four hours, he has collected almost 30 kilograms. Some will go to his family, and some will be sold to local restaurants that cook them in butter sauce. Then he stands up, wipes the sweat from his forehead with the backs of his hands and points to one of the islands, Ilha de Pernambuco, which is covered by two of the three species of mangroves found in Ara\u00e7\u00e1. \u201cSee that hill of trees? That\u2019s what is left of the mangroves. There used to be a lot more, all interconnected.\u201d<\/p>\n

Despite the changes, Ara\u00e7\u00e1 is home to one of the last remaining mangrove stands on the northern coast of the state of S\u00e3o Paulo. Its tangle of exposed roots keeps the trees standing. The bay supports three species typical of mangrove forests: black mangrove, white mangrove and red mangrove.<\/p>\n

The researchers have endeavored to show their findings to the residents of the region and talk with them. The book published in 2015 was one more way of disseminating information and focusing attention on the biological riches of the bay. \u201cWe go into schools, we spent time at homes, we talk with fishermen on the beach and invite them to meetings,\u201d Turra says. Mr. Teot\u00f4nio says he knows the researchers and has heard people talk about the meetings, but he hasn\u2019t yet felt like going.<\/p>\n

Project<\/strong>
\nBiodiversity and functioning of a subtropical coastal ecosystem: a contribution to integrated management (n\u00ba 2011\/50317-5<\/a>); Grant Mechanism:<\/strong> Research Grant \u2013 Thematic Project; Principal Investigator:<\/strong> Antonia Cec\u00edlia Zagagnini Amaral (IB-Unicamp); Investment:<\/strong> R$2,986,800.00 (FAPESP).<\/p>\n

Scientific articles
\n<\/em>VIEIRA, L. M., MIGOTTO, A. E. & WINSTON, J. E. Ctenostomatous Bryozoa from S\u00e3o Paulo, Brazil, with descriptions of twelve new species<\/a>. Zootaxa<\/strong>. V. 3889, No. 4, p. 485-524. December 2014.
\nAMARAL, A. C. Z. et al<\/em>. Ara\u00e7\u00e1: biodiversidade, impactos e amea\u00e7as<\/a>. Biota Neotropica<\/strong>. V. 10, No. 1, p. 219-64. March 2010.<\/p>\n

Book<\/em>
\nAMARAL, A. C. Z. et al. A vida na Ba\u00eda do Ara\u00e7\u00e1 \u2013 Diversidade e import\u00e2ncia<\/strong>. S\u00e3o Paulo: Lume, 2015.<\/p>\n","protected":false},"excerpt":{"rendered":"Bay on the northern coast of S\u00e3o Paulo displays a great deal of biodiversity","protected":false},"author":346,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[159],"tags":[206,224],"coauthors":[662],"class_list":["post-199137","post","type-post","status-publish","format-standard","hentry","category-science","tag-biodiversity","tag-ecology"],"acf":[],"_links":{"self":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/posts\/199137","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/users\/346"}],"replies":[{"embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/comments?post=199137"}],"version-history":[{"count":0,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/posts\/199137\/revisions"}],"wp:attachment":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/media?parent=199137"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/categories?post=199137"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/tags?post=199137"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/coauthors?post=199137"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}