Effects of small changes in riparian forest complexity on aquatic insect bioindicators in Brazilian subtropical streams

2017 ◽  
Vol 68 (3) ◽  
pp. 519 ◽  
Author(s):  
A. E. Siegloch ◽  
R. Schmitt ◽  
M. Spies ◽  
M. Petrucio ◽  
M. I. M. Hernández
Keyword(s):  
Water Quality ◽  
Environmental Gradient ◽  
Functional Group ◽  
Riparian Forest ◽  
Aquatic Insect ◽  
Riparian Forests ◽  
Important Indicator ◽  
Positive Effects ◽  
Species Analysis ◽  
Protection Area

Riparian forests have positive effects on water quality and biodiversity. However, most studies have only tested the effects of distinct vegetation types or streams with and without forests, despite the fact that riparian forests differ in degrees of complexity. The aim of the present study was to test whether riparian forest complexity affected the composition and abundance of the Ephemeroptera, Plecoptera and Trichoptera (EPT) taxa across a small environmental gradient. We also measured whether EPT genera or feeding groups responded to changes in riparian forest complexity. The study was conducted in two protection areas (i.e. Lagoa do Peri Municipal Park, PERI; and the Permanent Protection Area of Ratones, RAT) of Santa Catarina Island, Brazil. Primary production increased in streams with lower canopy percentage, and EPT assemblages differed among streams with different riparian forest complexity. In RAT, the water quality and forest variables affected EPT composition; however, in PERI, only water quality variables were important. Indicator species analysis based on genera suggested Kempnyia (Plecoptera) and Zelusia (Ephemeroptera) to be indicative of streams with greater forest complexity, whereas Farrodes (Ephemeroptera) was significant in streams of intermediate riparian forest complexity; however, no one functional group dominated. The results of the present study show that small changes in riparian forest complexity influence the composition of EPT insects in subtropical streams.

scholarly journals Riparian forest restoration as sources of biodiversity and ecosystem functions in anthropogenic landscapes

2021 ◽  
Author(s):  
Yasmine Antonini ◽  
Marina V. Beirão ◽  
Fernanda V. Costa ◽  
Cristiano S. Azevedo ◽  
Maria M. Wojakowski ◽  
...  
Keyword(s):  
Forest Restoration ◽  
Riparian Forest ◽  
Riparian Forests ◽  
Ecosystem Functions ◽  
Future Research ◽  
List Type ◽  
Anthropogenic Landscapes ◽  
Positive Effects ◽  
Terrestrial Habitats ◽  
Ecosystem Multifunctionality

AbstractRestoration of tropical riparian forests is challenging, since these ecosystems are the most diverse, dynamic, and complex physical and biological terrestrial habitats. This study tested whether biodiversity can predict ecosystem functions in a human-impacted tropical riparian forest.We explored the effects of several biodiversity components (taxonomic or functional groups) on different ecosystem functions associated with restored riparian forestsOverall, 49% of the biodiversity components showed positive effects on ecosystem functions, each component to a different degree. In general, our results showed that both taxonomic and functional biodiversity had strong effects on ecosystem functions indicating that floral and faunal biodiversity enhanced the multifunctionality of these restored riparian tropical forests.These findings indicate that in restored riparian forests, recovery of biodiversity is followed by improvement in important ecosystem functions that are the basis for successful restoration. Future research and policy for restoration programs must focus on restoring elementary faunal and floral components of biodiversity in order to promote ecosystem multifunctionality.

scholarly journals Multi-Scale Assessment of Relationships between Fragmentation of Riparian Forests and Biological Conditions in Streams

2019 ◽  
Vol 11 (18) ◽  
pp. 5060 ◽  
Author(s):  
Yirigui ◽  
Lee ◽  
Nejadhashemi
Keyword(s):  
Water Quality ◽  
Forest Fragmentation ◽  
Ecosystem Health ◽  
Riparian Forest ◽  
Anthropogenic Activities ◽  
Biological Indicators ◽  
Riparian Forests ◽  
Riparian Areas ◽  
Forest Patches ◽  
Biological Condition

Due to anthropogenic activities within watersheds and riparian areas, stream water quality and ecological communities have been significantly affected by degradation of watershed and stream environments. One critical indicator of anthropogenic activities within watersheds and riparian areas is forest fragmentation, which has been directly linked to poor water quality and ecosystem health in streams. However, the true nature of the relationship between forest fragmentation and stream ecosystem health has not been fully elucidated due to its complex underlying mechanism. The purpose of this study was to examine the relationships of riparian fragmented forest with biological indicators including diatoms, macroinvertebrates, and fish. In addition, we investigated variations in these relationships over multiple riparian scales. Fragmentation metrics, including the number of forest patches (NP), proportion of riparian forest (PLAND), largest riparian forest patch ratio (LPI), and spatial proximity of riparian forest patches (DIVISION), were used to quantify the degree of fragmentation of riparian forests, and the trophic diatom index (TDI), benthic macroinvertebrates index (BMI), and fish assessment index (FAI) were used to represent the biological condition of diatoms, macroinvertebrates, and fish in streams. PLAND and LPI showed positive relationships with TDI, BMI, and FAI, whereas NP and DIVISION were negatively associated with biological indicators at multiple scales. Biological conditions in streams were clearly better when riparian forests were less fragmented. The relationships of NP and PLAND with biological indicators were stronger at a larger riparian scale, whereas relationships of LPI and DIVISION with biological indicators were weaker at a large scale. These results suggest that a much larger spatial range of riparian forests should be considered in forest management and restoration to enhance the biological condition of streams.

EDUCAÇÃO AMBIENTAL COMO SUBSIDIO A (RE)AVALIAÇÃO DAS FORMAS DE USO NA APA DO ESTUÁRIO DO RIO CEARÁ EM FORTALEZA

2019 ◽  
Vol 21 (2) ◽  
pp. 962-975
Author(s):  
Emerson Rodrigues Lima ◽  
Ana Carla Alves Gomes ◽  
Ícaro Paiva de Oliveira ◽  
Maria Lucia Brito da Cruz
Keyword(s):  
Data Collection ◽  
Environmental Education ◽  
Riparian Forest ◽  
Sustainable Use ◽  
Secondary Data ◽  
Field Work ◽  
Protection Area ◽  
Negative Impacts ◽  
Natural Dynamics ◽  
Del Rio

A pesquisa trata de uma análise da relação sociedade natureza no contexto da Área de Proteção Ambiental (APA) do rio Ceará e teve como objetivo principal o estudo dos impactos negativos sofridos a partir dessa interação, descrevendo os principais problemas ocasionados pela ocupação desordenada, como a intervenção nas dunas, poluição do mangue e desmatamento da mata ciliar, os quais condicionam a mudança da dinâmica natural do ambiente causando interferências paisagísticas e biológicas no local. O aporte teórico metodológico embasa-se nas teorias clássicas pertinentes, bem como levantamento de dados secundários, trabalho de campo e a técnica de geoprocessamento para a elaboração de material cartográfico. Os resultados demonstram a urgência em inserir práticas vinculadas a educação ambiental na APA, dessa forma, o trabalho visa servir de subsídio à conscientização da necessidade de preservação deste ambiente, recomendando, assim o diálogo entre a população e os órgãos responsáveis para garantir o uso sustentável da mesma.Palavras-chave: Conservação; Educação Ambiental; Análise Geoambiental. ABSTRACTThe research deals with an analysis of the relation nature-society in the context of the APA (Ambiental Protection Area) of Ceará River and it had as main objective the study of the negative impacts suffered from this interaction, describing the main problems caused by the disordered occupation, such as the intervention in the dunes, mangrove pollution and deforestation of the riparian forest, which condition the change of the natural dynamics of the environment causing landscape and biological interferences in the place. The theoretical methodological support is based on the relevant classical theories, as well as secondary data collection, field work and the geoprocessing technique for the preparation of cartographic material. The results show the urgency to insert practices related to environmental education in the APA, so this work aims to serve as a subsidy to raise awareness of the need to preserve this environment, recommending in this way the dialogue between the population and responsible bodies to ensure sustainable use of the same. Keywords: Conservation; Environmental education; Geoenvironmental Analysis. RESUMENLa investigación aborda un análisis de la relación de la sociedad de la naturaleza en el contexto del Área de Protección Ambiental (APA) del río Ceará y su objetivo principal fue el estudio de los impactos negativos sufridos por esta interacción, describiendo los principales problemas causados por la ocupación desordenada, como el intervención en las dunas, contaminación del manglar y deforestación del bosque ribereño, que condicionan el cambio de la dinámica natural del ambiente causando interferencia biológica y paisajística en el lugar. La base teórica metodológica se basa en las teorías clásicas relevantes, así como en la recolección secundaria de datos, el trabajo de campo y la técnica de geoprocesamiento para la preparación de material cartográfico. Los resultados demuestran la urgencia de insertar prácticas relacionadas con la educación ambiental en la APA, por lo tanto, el trabajo tiene como objetivo apoyar la conciencia de la necesidad de preservar este medio ambiente, recomendando así el diálogo entre la población y los organismos responsables para garantizar un uso sostenible de la misma.Palabras clave: Conservación; Educación ambiental; Análisis geoambiental.

Water quality in an urban environmental protection area in the Cerrado Biome, Brazil

2019 ◽  
Vol 191 (2) ◽  
Author(s):  
Helder Pereira de Figueiredo ◽  
Cibele Rigolin Pereira de Figueiredo ◽  
João Henrique de Souza Barros ◽  
Michel Constantino ◽  
Fernando Jorge Corrêa Magalhães Filho ◽  
...  
Keyword(s):  
Water Quality ◽  
Environmental Protection ◽  
Cerrado Biome ◽  
Environmental Protection Area ◽  
Protection Area

scholarly journals Water-use dynamics of an alien-invaded riparian forest within the Mediterranean climate zone of the Western Cape, South Africa

2017 ◽  
Vol 21 (9) ◽  
pp. 4551-4562 ◽  
Author(s):  
Bruce C. Scott-Shaw ◽  
Colin S. Everson ◽  
Alistair D. Clulow
Keyword(s):  
South Africa ◽  
Water Use ◽  
Sap Flow ◽  
Riparian Forest ◽  
Riparian Forests ◽  
Ratio Method ◽  
Natural State ◽  
Indigenous Species ◽  
Western Cape ◽  
Selection Of

Abstract. In South Africa, the invasion of riparian forests by alien trees has the potential to affect the country's limited water resources. Tree water-use measurements have therefore become an important component of recent hydrological studies. It is difficult for South African government initiatives, such as the Working for Water (WfW) alien clearing program, to justify alien tree removal and implement rehabilitation unless hydrological benefits are known. Consequently, water use within a riparian forest along the Buffeljags River in the Western Cape of South Africa was monitored over a 3-year period. The site consisted of an indigenous stand of Western Cape afrotemperate forest adjacent to a large stand of introduced Acacia mearnsii. The heat ratio method of the heat pulse velocity sap flow technique was used to measure the sap flow of a selection of indigenous species in the indigenous stand, a selection of A. mearnsii trees in the alien stand and two clusters of indigenous species within the alien stand. The indigenous trees in the alien stand at Buffeljags River showed significant intraspecific differences in the daily sap flow rates varying from 15 to 32 L day−1 in summer (sap flow being directly proportional to tree size). In winter (June), this was reduced to only 7 L day−1 when limited energy was available to drive the transpiration process. The water use in the A. mearnsii trees showed peaks in transpiration during the months of March 2012, September 2012 and February 2013. These periods had high average temperatures, rainfall and high daily vapor pressure deficits (VPDs – average of 1.26 kPa). The average daily sap flow ranged from 25 to 35 L in summer and approximately 10 L in the winter. The combined accumulated daily sap flow per year for the three Vepris lanceolata and three A. mearnsii trees was 5700 and 9200 L, respectively, clearly demonstrating the higher water use of the introduced Acacia trees during the winter months. After spatially upscaling the findings, it was concluded that, annually, the alien stand used nearly 6 times more water per unit area than the indigenous stand (585 mm a−1 compared to 101 mm a−1). This finding indicates that there would be a gain in groundwater recharge and/or streamflow if the alien species are removed from riparian forests and rehabilitated back to their natural state.

Relationship between Morphology and Trophic Ecology in an Assemblage of Passerine Birds in Riparian Forests of the Paraná River (Argentina)

2018 ◽  
Vol 11 (1) ◽  
pp. 44-53 ◽  
Author(s):  
Virginia Quiroga ◽  
Rodrigo E. Lorenzón ◽  
Gisela Maglier ◽  
Ana L. Ronchi-Virgolini
Keyword(s):  
Trophic Ecology ◽  
Riparian Forest ◽  
A Priori ◽  
Bird Species ◽  
Morphological Characteristics ◽  
Paraná River ◽  
Riparian Forests ◽  
Phylogenetic Constraint ◽  
Parana River ◽  
Coexisting Species

We describe the ecomorphology of an assemblage of bird species found in riparian forests of the Middle Paraná River, Argentina. We sought to determine (1) the more important morphological characteristics that separate coexisting species, (2) whether such separation was related to the trophic ecology of each species and (3) whether a priori guilds showed morphological similarity. We tested the hypotheses that (a) a species’ morphology is related to the trophic ecology of that species and (b) that species of a priori guilds are morphometrically more similar to each other than to species of different a priori guilds. For this, we considered an assemblage of 29 species of birds from riparian forest that were sampled with mist nets during the 2011 and 2014 breeding seasons. We obtained morphometric measurements of captured individuals and supplemented those data with measurements from museum specimens. Trophic characterisation (diet and trophic microhabitat) was based on a literature review. Results showed a separation of bird species as a function of variables related to trophic ecology (diets and trophic microhabitats) and morphology. After controlling for phylogenetic constraint, species’ morphology partially reflected the trophic ecology of the species, supporting the central hypothesis of the ecomorphological discipline and showing that the use of trophic and morphometric data provides complementary data to improve the guild organisation of riparian bird assemblages.

scholarly journals Vegetation mapping in an area of Ombrophilous Dense Forest at Parque Estadual da Serra do Mar, São Paulo State, Brazil, and floristic composition of the tree component of some physiognomies*

Hoehnea ◽  
2012 ◽  
Vol 39 (2) ◽  
pp. 219-233 ◽  
Author(s):  
Maria Cláudia Melo Pacheco de Medeiros ◽  
Isabel Fernandes de Aguiar Mattos ◽  
Marina Mitsue Kanashiro ◽  
Jorge Yoshio Tamashiro ◽  
Marcos Pereira Marinho Aidar
Keyword(s):  
Riparian Forest ◽  
Detrended Correspondence Analysis ◽  
Floristic Composition ◽  
Field Work ◽  
Aerial Photographs ◽  
Secondary System ◽  
Serra Do Mar ◽  
Dense Forest ◽  
Species Analysis ◽  
Tree Component

This study aimed to map phytophysiognomies of an area of Ombrophilous Dense Forest at Parque Estadual da Serra do Mar and characterize their floristic composition. Photointerpretation of aerial photographs in scale of 1:35,000 was realized in association with field work. Thirteen physiognomies were mapped and they were classified as Montane Ombrophilous Dense Forest, Alluvial Ombrophilous Dense Forest or Secondary System. Three physiognomies identified at Casa de Pedra streamlet's basin were studied with more details. Riparian forest (RF), valley forest (VF), and hill forest (HF) presented some floristic distinction, as confirmed by Detrended Correspondence Analysis (DCA) and Indicator Species Analysis (ISA) conducted here. Anthropic or natural disturbances and heterogeneity of environmental conditions may be the causes of physiognomic variation in the vegetation of the region. The results presented here may be useful to decisions related to management and conservation of Núcleo Santa Virgínia forests, in general.

scholarly journals Psychological Well-Being in Chinese College Students During the COVID-19 Pandemic: Roles of Resilience and Environmental Stress

2021 ◽  
Vol 12 ◽  
Author(s):  
Yuanfa Tan ◽  
Chienchung Huang ◽  
Yun Geng ◽  
Shannon P. Cheung ◽  
Shuyan Zhang
Keyword(s):  
College Students ◽  
Environmental Stress ◽  
Well Being ◽  
Life Outcomes ◽  
Psychological Well Being ◽  
Important Indicator ◽  
Chinese College Students ◽  
Positive Effects ◽  
Negative Effect ◽  
Using Data

Psychological well-being is an important indicator of well-being and has been found to be associated with a multitude of positive life outcomes. Using data collected from 1,871 Chinese college students from September 23 to October 5, 2020, this study examined students' psychological well-being during the COVID-19 pandemic and investigated how resilience and pandemic-related environmental stress may affect psychological well-being. Results showed that resilience had strong positive effects on psychological well-being during the pandemic. Meanwhile, environmental stress had a moderate effect and marginally reduced psychological well-being. The magnitudes of the estimates suggested that increasing resilience can effectively buffer the negative effect of environmental stress on psychological well-being.

scholarly journals Biological Water Quality Indices Performance Based on Aquatic Insects in Recreational Rivers

2021 ◽  
Vol 32 (1) ◽  
pp. 89-103
Author(s):  
Ahmad Hadri Jumaat ◽  
◽  
Suhaila Abdul Hamid ◽  
Keyword(s):  
Water Quality ◽  
Aquatic Insects ◽  
Aquatic Insect ◽  
Working Party ◽  
Biotic Index ◽  
Biological Index ◽  
Biological Water ◽  
The Status ◽  
Suitable Index ◽  
Abundance And Distribution

Abundance and distribution of aquatic insects respecting to several water chemical parameters from six rivers were studied in order to determine the performance of biological index in monitoring the water quality. A total of 960 individuals of aquatic insects from nine orders were recorded using kick and drag sampling techniques. Lubok Semilang had the greatest number of aquatic insects with 250 individuals, followed by Telaga Tujuh (181 individuals) and Sungai Durian Perangin (171 individuals). EPT (Ephemeroptera, Plecoptera and Trichoptera) order were the most dominant order recorded in all six rivers. Lata Kekabu had more diverse and richer aquatic insect assemblages based on ecological indices compared to the other five rivers. In order to evaluate the water quality of recreational rivers in Malaysia, Family Biotic Index (FBI), Malaysian Family Biotic Index (MFBI) and Biological Monitoring Working Party (BMWP) were used and compared with Water Quality Index to determine the water quality at the study areas. Results demonstrated that the biotic indices were more sensitive towards changes in water parameters than the WQI. Among all the biological indices, MFBI was the most suitable index to be adopted in Malaysian river water assessment as it is more reliable in assessing the status of water quality.

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