Changes in mangrove extension at the Pacoti River estuary, CE, NE Brazil due to regional environmental changes between 1958 and 2004

Lacerda, Luiz Drude de; Menezes, Marcelo Oliveira Teles de; Molisani, Maurício Mussi

doi:10.1590/s1676-06032007000300007

Cited by 50 publications

(34 citation statements)

References 7 publications

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“…This expansion rate was higher in swamps that have undergone hydrological changes due to engineering works but also occurred in other locations, without direct anthropogenic influence. Engineering works, such as dams, wave breakers and other coastal interventions are capable of maximizing the effects of climate change on mangroves (Lacerda et al 2007.…”

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confidence: 99%

“…A study conducted by Lacerda et al (2007) on the mangrove expansion at the Pacotí River estuary, in the metropolitan region of Fortaleza, state of Ceará, showed that, in addition to colonizing old salt pits, mangroves also grew on recently enlarged estuarine islands and beaches. According to the authors, between 1958 and 1999, six new islands emerged in the estuary.…”

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confidence: 99%

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Mangroves Response to Climate Change: A Review of Recent Findings on Mangrove Extension and Distribution

Godoy

Lacerda

2015

An. Acad. Bras. Ciênc.

123

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Mangroves function as a natural coastline protection for erosion and inundation, providing important environmental services. Due to their geographical distribution at the continent-ocean interface, the mangrove habitat may suffer heavy impacts from global climate change, maximized by local human activities occurring in a given coastal region. This review analyzed the literature published over the last 25 years, on the documented response of mangroves to environmental change caused by global climate change, taking into consideration 104 case studies and predictive modeling, worldwide. Most studies appeared after the year 2000, as a response to the 1997 IPCC report. Although many reports showed that the world's mangrove area is decreasing due to direct anthropogenic pressure, several others, however, showed that in a variety of habitats mangroves are expanding as a response to global climate change. Worldwide, pole ward migration is extending the latitudinal limits of mangroves due to warmer winters and decreasing the frequency of extreme low temperatures, whereas in low-lying coastal plains, mangroves are migrating landward due to sea level rise, as demonstrated for the NE Brazilian coast. Taking into consideration climate change alone, mangroves in most areas will display a positive response. In some areas however, such as low-lying oceanic islands, such as in the Pacific and the Caribbean, and constrained coastlines, such as the SE Brazilian coast, mangroves will most probably not survive.

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Mangroves Response to Climate Change: A Review of Recent Findings on Mangrove Extension and Distribution

Godoy

Lacerda

2015

An. Acad. Bras. Ciênc.

123

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“…CHAALALI et al, 2013) of PAC and PIR in the dry season led to changes in the species composition, with an emergence of marine species and a decrease in phytoplankton biomass. LACERDA et al (2007) ) mostly due to alterations in freshwater supply and sediment accumulation in consequence of river damming. Changes due to climate changes were also not ruled out by these authors.…”

Section: Discussionmentioning

confidence: 99%

Influence of river discharge on phytoplankton structure and nutrient concentrations in four tropical semiarid estuaries

2016

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This study evaluated changes in phytoplankton and nutrients after an increase in river discharge in four estuaries of northeastern Brazil. Samples were taken during a markedly freshwater-deprived period (Nov/2010, dry season), and during a rainy season (May/2011). While two estuaries are located in urban areas (Ceará -CE and Cocó -CO), the others are markedly freshwater-deprived (Pacoti -PAC and Pirangi -PIR). Our findings indicate that increased freshwater had opposing effects on estuaries impacted by anthropogenic discharges (CO, CE and PIR) compared with the other, less impacted (PAC). In CO and CE, the freshwater flow during the rainy period had a nutrient diluting effect and controlled phytoplankton blooms. In PIR, only phosphorus and inorganic nitrogen decreased in the rainy season. In contrast, an increase of all nutrients was observed in PAC, and of TN in PIR, followed by an increase in phytoplankton biomass. In the rainy season, eutrophic freshwater species dominated in all the estuaries. In the dry season, blooms of Cryptomonas/Rhodomonas and Synechocystis aquatilis were, respectively, observed in CE and CO. Also in the dry season, PAC and PIR had a predominance of marine species under a condition of hypersalinity. Canonical correspondence analysis suggested the variation observed for salinity, silica, and TN are the main driver of phytoplankton structure. AbstrAct

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“…, Lacerda et al. ;), adding to the probable influence of estuarine stress on H. emarginata in this area. The main impact seems to result from river damming, which has led to the formation of islands that are being covered by mangrove forest, partly occupying the habitat of other estuarine species (Lacerda et al.…”

Section: Discussionmentioning

confidence: 99%

Northern range extension of the seagrass Halodule emarginata Hartog

et al. 2016

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The seagrass Halodule emarginata is an endemic tropical species of Brazil, previously found from São Paulo to Bahia. The present study gives more ecological information of this species and report the extension of its northern range where it occurs in an estuarine area of Aquiraz‐Ceará, semiarid coast of Brazil. In November 2014, the meadow was discovered, georeferenced and mapped. Five cores were collected for morphometrical analyses of H. emarginata and associated florofaunistic species. Two beds of H. emarginata with areas of 177.8 m2 and 5012.3 m2 were identified in the estuary of the Pacoti River, indicating an extension of its known range by 1500 km to the north. Despite the emarginate apex, morphological patterns revealed that specimens were slightly less developed than previously described in the literature, probably due to estuarine stress. However, algal biodiversity (seven species) in the studied meadows was within the range observed for other estuarine meadows in Brazil, with presence of Rhodophyta and Chlorophyta. The main groups of invertebrate megafauna were present, including 13 taxa mainly of Mollusca, Crustacea and Polychaeta. This meadow will be monitored in order to understand its dynamics and relationships with other florofaunistic species and its responses to environmental variations.

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Changes in mangrove extension at the Pacoti River estuary, CE, NE Brazil due to regional environmental changes between 1958 and 2004

Cited by 50 publications

References 7 publications

Mangroves Response to Climate Change: A Review of Recent Findings on Mangrove Extension and Distribution

Mangroves Response to Climate Change: A Review of Recent Findings on Mangrove Extension and Distribution

Influence of river discharge on phytoplankton structure and nutrient concentrations in four tropical semiarid estuaries

Northern range extension of the seagrass Halodule emarginata Hartog

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