Remote sensing of wetlands in South America: status and challenges

Kandus, Patricia; Minotti, Priscilla Gail; Morandeira, Natalia Soledad; Grimson, Rafael; Trilla, Gabriela Liliana Gonzalez; Gonzalez, Eliana Belén; Martín, Laura San; Gayol, Maira Patricia

doi:10.1080/01431161.2017.1395971

Cited by 47 publications

(25 citation statements)

References 96 publications

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“…In fact, Argentina and Brazil are the two countries with the largest economies in South America (World Bank, 2021). Additionally, previous systematic reviews on aquatic ecology in South America or Neotropics showed that Argentina and Brazil were the most productive countries (Padial et al, 2008;Barbosa 2014;Dominguez & Santos, 2014;Kandus et al, 2017). The increase in publications across the years can be associated with investments in education, Table 4.…”

Section: Discussionmentioning

confidence: 94%

Organic matter decomposition in subtropical South America aquatic environments: a systematic and scientometric review

et al. 2021

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Aim To evaluate the general situation of studies on the decomposition of organic matter in aquatic environments in the subtropical region of South America. Methods We compiled publications (1990-2018) with a combination of words referring to decomposition, debris, aquatic environments and South American countries with subtropical climate. The characteristics of the publications were analysed over time. Results A total of 1,042 publications were found, with 106 specifically addressing the purpose of this study. For subtropical climates in South America, this research topic is incipient. Most studies were carried out in streams (39.6%) and studied the decomposition process and associated invertebrates (42.5%). There is a great deficiency of studies in lentic environments (e.g. lakes, 10%). Conclusion Studies on the decomposition of organic detritus in aquatic ecosystems in the subtropical region of South America are still emerging. While the knowledge about the role of shredders is more or less understood, the importance of microorganisms on the decomposition process still needs to be better evaluated. Finally, our study demonstrated that scientific collaboration boosted publication on the topic.

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Section: Discussionmentioning

confidence: 94%

Organic matter decomposition in subtropical South America aquatic environments: a systematic and scientometric review

et al. 2021

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“…South America has a large proportion of wetlands compared to other continents. While most of these wetlands remained in relatively good condition until a few decades ago, pressures from land use and climate change have threatened their integrity in recent years [69].…”

Section: Discussionmentioning

confidence: 99%

The Vega Alta of Segura River (Southeast of Spain): A Wetland of International Importance

2021

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The Ramsar Convention is an intergovernmental treaty for the conservation and wise use of wetlands, which establishes nine criteria related to natural values and a cultural one that wetlands must meet to be included in the list of wetlands of international importance. We aim to evaluate if the wetlands of the Vega Alta of the Segura River (southeast of Spain) meet the requirements to fulfil this agreement. Thanks to meticulous fieldwork and a bibliographic review related to the stated objective, we collected information on the existing environmental and cultural values. The results show that this set of wetlands is home to 11 species of threatened vertebrates in Spain, two priority habitats in the European Union, as well as cultural values related to their origin, conservation, and ecological functioning. Likewise, in the area there are archaeological sites, traditional uses of water associated with the cultivation of rice, and religious manifestations. Effective wetland inventories and rigorous analyzes of their ecological and environmental characteristics, as well as their socioeconomic functions, need to be carried out in order to improve their management and protection.This wetland certainly meets three criteria to be included in the Ramsar Convention list of wetlands.

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“…There are an estimated 127 million hectares of wetlands in Canada, 114.6 million in the United States of America (U.S.A.), and 1.6 million wetlands along the Mexico coast including an estimated 1,600,000 ha of estuarine and marine wetlands, and numerous Published research relating to wetland classification via remote sensing originates from all continents, though the publishing is often dominated by one or a few countries, including the People's Republic of China (PRC) [25][26][27][28], Canada [29][30][31], and the U.S.A. [32][33][34]. Less publications come from Europe [35,36], South America [37][38][39][40], Africa [41,42], and Oceania [43,44]. Globally, recent research trends include a focus on deep learning methods [45,46], vegetation mapping [45][46][47][48][49], and applications of low and medium spatial resolution imagery [38,42,47,50,51] and hyperspectral imagery [28].…”

Section: Introductionmentioning

confidence: 99%

“…Globally, recent research trends include a focus on deep learning methods [45,46], vegetation mapping [45][46][47][48][49], and applications of low and medium spatial resolution imagery [38,42,47,50,51] and hyperspectral imagery [28]. Very few reviews relating to country-or continent-based trends in the publication of wetland classification research exist [39,41,52]. Additionally, a number of bibliometric analyses of remote sensing in general have been published [53][54][55].…”

Section: Introductionmentioning

confidence: 99%

“…The overarching goal of this review is to provide readers with the "big picture" of the current status and general trends in remote sensing classification of wetlands in North America over the past 40 years by conducting a meta-analysis of the results of existing wetland studies. Various wetland-remote sensing reviews currently exist, including general reviews [94][95][96], reviews relating to challenges [97], specific methods and strategies [98,99], and reviews of related work at large geographical scales such as east East Africa [41] and South America [39]. However, outside of these examples, there is a lack of review and meta-analysis for most continents, including North America (herein considered Canada, U.S.A., and Mexico).…”

Section: Introductionmentioning

confidence: 99%

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Meta-Analysis of Wetland Classification Using Remote Sensing: A Systematic Review of a 40-Year Trend in North America

et al. 2020

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North America is covered in 2.5 million km2 of wetlands, which is the remainder of an estimated 56% of wetlands lost since the 1700s. This loss has resulted in a decrease in important habitat and services of great ecological, economic, and recreational benefits to humankind. To better manage these ecosystems, since the 1970s, wetlands in North America have been classified with increasing regularity using remote sensing technology. Since then, optimal methods for wetland classification by numerous researchers have been examined, assessed, modified, and established. Over the past several decades, a large number of studies have investigated the effects of different remote sensing factors, such as data type, spatial resolution, feature selection, classification methods, and other parameters of interest on wetland classification in North America. However, the results of these studies have not yet been synthesized to determine best practices and to establish avenues for future research. This paper reviews the last 40 years of research and development on North American wetland classification through remote sensing methods. A meta-analysis of 157 relevant articles published since 1980 summarizes trends in 23 parameters, including publication, year, study location, application of specific sensors, and classification methods. This paper also examines is the relationship between several remote sensing parameters (e.g., spatial resolution and type of data) and resulting overall accuracies. Finally, this paper discusses the future of remote sensing of wetlands in North America with regard to upcoming technologies and sensors. Given the increasing importance and vulnerability of wetland ecosystems under the climate change influences, this paper aims to provide a comprehensive review in support of the continued, improved, and novel applications of remote sensing for wetland mapping across North America and to provide a fundamental knowledge base for future studies in this field.

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Remote sensing of wetlands in South America: status and challenges

Cited by 47 publications

References 96 publications

Organic matter decomposition in subtropical South America aquatic environments: a systematic and scientometric review

Organic matter decomposition in subtropical South America aquatic environments: a systematic and scientometric review

The Vega Alta of Segura River (Southeast of Spain): A Wetland of International Importance

Meta-Analysis of Wetland Classification Using Remote Sensing: A Systematic Review of a 40-Year Trend in North America

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