Assessment of Two Adjacent Mountainous Riparian Areas along Nestos River Tributaries of Greece

Zaimes, George Ν.; Iakovoglou, Valasia; Syropoulos, Dimitrios; Kaltsas, Dimitrios; Avtzis, Dimitrios Ν.

doi:10.3390/f12091284

Cited by 6 publications

(5 citation statements)

References 59 publications

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“…Vegetation can reveal the stream's physical, chemical, and biological characteristics, as well as its ecological roles and services [130][131][132]. Riparian vegetation is the vegetation that grows along the banks of a stream and plays an important part in the stream's ecological health [133]. Riparian vegetation assessment protocols may identify; the species composition, estimating the width of the riparian zone, and assessing the vegetation cover.…”

Section: Discussionmentioning

confidence: 99%

UAV-based Optical Methods to Estimate the Flow of Temporary Streams and Evaluate their Environmental Status

Koutalakis,

Stamataki,

Tzoraki

2023

Preprint

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Temporary streams are a key component of the hydrological cycle in arid and semi-arid regions, but their flow is highly variable and difficult to measure. In this paper, we present a novel approach that could be used to assess the flow of temporary streams and characterize their environmental status. Specifically, we apply the Image Velocimetry method to estimate surface velocity in temporary streams using unmanned aerial vehicles (UAVs) equipped with optical sensors (IV-UAV method). The IV-UAV method enables the easy, safe and quick estimation of the velocity on the water’s surface. This method was applied in different temporary streams in Lesvos Island, Greece. The produced results show that the IV-UAV can be implemented at low discharges, at temporary streams and at small streams. However, there were many occasions that measurements were unable due to various reasons such as dense vegetation or archaeological sites. Despite of this, the proposed methodology could be incorporated in optical protocols which are used to assess the environmental status of temporary streams of Mediterranean conditions. Finally, this would become a valuable tool for understanding the dynamics of these eco-systems and monitoring changes over time.

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Section: Discussionmentioning

confidence: 99%

UAV-based Optical Methods to Estimate the Flow of Temporary Streams and Evaluate their Environmental Status

Koutalakis,

Stamataki,

Tzoraki

2023

Preprint

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“…The Nestos River is one of the five biggest rivers in Greece. It is of great importan not only for the local economies but also in environmental terms since it is considered be one of the most important water biotopes in Greece [32][33][34][35][36]. It springs from Rila Mou tain in Bulgaria, having a total length of 234 km, from which 135 km belong to Greek lan The famous delta of the Nestos River hosts a variety of habitats, flora, and fauna speci and it is protected by RAMSAR Convention [37][38][39][40].…”

Section: Study Areamentioning

confidence: 99%

“…Five petroleum product samples (jet fu gasoline, diesel fuel, heating oil, and bunker fuel) were granted by Aspropyrgos refine (Athens, Greece), and they were used for spiking samples of clean water and clean san The Nestos River is one of the five biggest rivers in Greece. It is of great importance not only for the local economies but also in environmental terms since it is considered to be one of the most important water biotopes in Greece [32][33][34][35][36]. It springs from Rila Mountain in Bulgaria, having a total length of 234 km, from which 135 km belong to Greek land.…”

Section: Materials and Instrumentationmentioning

confidence: 99%

Investigation of Petroleum Hydrocarbon Fingerprints of Water and Sediment Samples of the Nestos River Estuary in Northern Greece

et al. 2022

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The oil and gas industry is definitely considered the main contributor in the energy sector, acting as the lifeblood of our planet. However, environmental contamination by crude oil and petroleum products due to anthropogenic activities is of great concern. Nestos River springs from Bulgaria and has a total length of 234 km, from which 135 km belong on Greek land. It is globally recognized as nature’s miracle accommodating a variety of habitats, flora, and fauna species at the deltaic area protected by the RAMSAR Convention. In the current study, water and sediment samples from three different sites along the river course and other six sites of the delta region and the surrounding sea area were selected in order to investigate the potential environmental impact of the nearby oil and gas industry in the Prinos-Kavala basin that operates over 40 years. The samples were analyzed by fingerprinting techniques using gas chromatography-mass spectrometry. Crude oil samples and different petroleum products were also analyzed to disclose specific markers (biomarkers) that characterize the different sources of oil spills. The analytical data revealed that the distribution of biomarkers is a valuable tool in oil spill identification as well as in their correlation to suspected sources. Extract ion chromatograms of the reference samples showed significant differences in the distribution of n-alkane, isoprenoid, sterane, triterpane, and dibenzothiophene compounds. The results on the analyzed water and sediment samples bared no evidence of environmental hazards associated with the hydrocarbon exploration and production activities of the neighboring oil and gas company.

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“…Mountainous riparian ecosystems provide numerous services and are of critical conservation concern under human disturbances (Patten, 1998 ; Zaimes et al, 2021 ). However, our knowledge of anthropogenic threats to the biodiversity and environments of this ecotone remains limited due to its sparse distribution, relatively small extent, and limited accessibility (Kajtoch et al, 2016 ).…”

Section: Conservation Implicationsmentioning

confidence: 99%

Longitudinal multidiversity pattern and the environmental drivers of riparian bird communities along submontane rivers of Changbai Mountains, China

Gong

Wang

et al. 2022

Ecology and Evolution

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Riparian zones are biodiversity hotspots in montane ecosystems and are of critical conservation concern. However, studies on longitudinal diversity patterns and environmental drivers have been restricted to aquatic fauna, while the animals that rely on both river and riparian resources have been of much less concern. Here, we examined the multifaceted diversity distribution of riparian birds along longitudinal gradients and analyzed the importance of environmental factors in shaping these patterns in the Changbai Mountains. Hump‐shaped relationships between elevation and taxonomic, phylogenetic, and functional diversity, as well as with the conservation value index, were evident along each of the classic submontane rivers. Forest cover, vegetation height variation, and land cover patches positively affected the taxonomic diversity indices. In addition to the species richness, fluvial geomorphology variables (river sinuosity and gravel bar) were significantly related to the phylogenetic diversity. However, there was no statistical evidence for a relationship between functional diversity and the environmental variables examined. This study emphasized the necessity of including multiple diversity measures beyond taxonomic diversity and demonstrated the importance of both terrestrial and aquatic components in shaping the multifaceted biodiversity pattern of riparian organisms living in riparian zones. The results suggested that conservation priority should be given to both rivers and banks in the middle reaches and that riparian birds could be good candidate indicators of environmental change in the submontane river‐forest ecotone.

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Assessment of Two Adjacent Mountainous Riparian Areas along Nestos River Tributaries of Greece

Cited by 6 publications

References 59 publications

UAV-based Optical Methods to Estimate the Flow of Temporary Streams and Evaluate their Environmental Status

UAV-based Optical Methods to Estimate the Flow of Temporary Streams and Evaluate their Environmental Status

Investigation of Petroleum Hydrocarbon Fingerprints of Water and Sediment Samples of the Nestos River Estuary in Northern Greece

Longitudinal multidiversity pattern and the environmental drivers of riparian bird communities along submontane rivers of Changbai Mountains, China

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