George N Zaimes

George N Zaimes
Technological Educational Institute of Kavala | TEIKAV · Department of Forestry and Natural Environment Management

PhD

About

73
Publications
29,254
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Introduction
George Zaimes is a Professor of Technological Application in the management and control of mountainous water with the Department of Forestry and Natural Environment, Technological Educational Institute of Kavala since 2010.

Publications

Publications (73)
Article
Full-text available
Water velocity and discharge are essential parameters for monitoring water resources sustainably. Datasets acquired from Unoccupied Aerial Systems (UAS) allow for river monitoring at high spatial and temporal resolution, and may be the only alternative in areas that are difficult to access. Image or video-based methods for river flow monitoring hav...
Conference Paper
Bu çalışma ile 22 Temmuz 2021 tarihinde Arhavi’de gerçekleşen sel ve taşkının oluşumunda etkin rol oynayan çeşitli havza karakteristiklerinin değerlendirilmesi amaçlanmıştır. Bu amaç kapsamında; a) orman, mera, çay ve fındıklık arazi kullanımlarında yağışlar sonrası gerçekleşen yüzeysel akış miktarları, b) dere kenarı/şev (kanal ve oyuntu) erozyonu...
Article
The riparian areas of the Mediterranean are unique but face many pressures from anthropogenic and climate change impacts. They have very rich and diverse plant communities as a result of the dynamic fluvio-geomorphologic conditions of the Mediterranean streams. In this study, the riparian areas of two adjacent mountainous tributaries (Arkoudorema a...
Article
Full-text available
The accuracy of photogrammetry for geohazards monitoring has improved within the last years because of the "drone revolution". This study is an attempt to perform morphometric measurements in a landslide event that took place near the village Nea Zichni in Northern Greece. The DJI Mavic 2 Pro was selected to capture orthoimages of the entire area i...
Article
Full-text available
Riparian ecosystems in urban environments are usually degraded. Their sustainable management can reduce water pollution, mitigate climate change while providing recreation opportunities. This study assessed the current condition of the streams/torrents and their riparian areas in the city of Drama in Greece. In addition, practices to improve their...
Article
Sustainable water resources management plans require advanced instrumentation to measure accurately both the water velocity and the discharge of the aquatic bodies. An innovative way to achieve this goal is with the use of non-contact, cost-effective, and efficient image-based methods. A studied water surface can be captured by subsequent images wh...
Chapter
Full-text available
Despite covering only 0.82% of the ocean’s surface, the Mediterranean Sea supports up to 18% of all known marine species, with 21% being listed as vulnerable and 11% as endangered. The acceler- ated spread of tropical non-indigenous species is leading to the “tropicalization” of Mediterranean fauna and flora as a result of warming and extreme heat...
Article
Full-text available
Riparian areas, especially in the Mediterranean, offer many ecosystem services for the welfare of society benefits from their sustainable management. This study presents different tools used to assess riparian areas of Greece and their results. Riparian areas with different land-uses/vegetation covers along streams or torrents were assessed. The as...
Article
Full-text available
Anthropogenic activities and climate change have accelerated soil erosion in the Mediterranean. In the region, erosion rates are further exacerbated due to frequent wildfires and flash floods. Soil bioengineering works and nature-based solutions need to be placed in targeted areas to provide the greatest erosion control in the burnt areas. The purp...
Article
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Floods can be extremely harmful for the welfare of societies regardless if they are natural or caused by humans. The Mediterranean region has experienced an increase in flash floods frequency and severity. The suddenness and episodic nature of these type of floods makes it more difficult to predict them compared to river floods. In this study, a ma...
Article
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Fluviogeomorphologic processes such as bank erosion and deposition affect and change the shape and condition of river and stream channels. Erosion and deposition rates are dependent on many natural (e.g. climate, geology, vegetation, topography) and anthropogenic (e.g. dams, bridges, gabions, straightening, wildfires etc.) factors. Alterations to t...
Article
Soil loss and erosion is a major environmental problem in the Mediterranean. Soil and water bioengineering uses plants and/or parts of plants along with inert material to create solutions to fulfill soil conservation objectives combined with an ecological rehabilitation approach. The ECOMED project developed novel approaches and tools to specialize...
Article
Full-text available
Stream bank and gully erosion are major sources of nonpoint source pollutants, especially in landscapes dominated by agriculture. Implementation of upland conservation practices in landscapes dominated by agriculture reduces upland sediment transport more than water runoff, leading to excessive stream bank and gully erosion. This review focus on te...
Article
Las áreas ribereñas y los deltas ofrecen muchos servicios ecosistémicos que han llevado a su intensa utilización y degradación por parte de los humanos. Estos variados y únicos servicios han llevado a una priorización mundial de la conservación y protección de estos ecosistemas. Esta cuestión fue reconocida por la UNESCO al establecer la Cátedra Co...
Article
Full-text available
Natural vegetation has been lost and fragmented in agricultural landscapes worldwide, due to the intensive land use activities. This is also true for riparian ecosystems, where agricultural practices have simplified their structure with significant cascading impacts on wildlife diversity. In this study, three representative Mediterranean riparian h...
Article
Full-text available
Protected areas are necessary for the conservation and enhancement of biodiversity. Wildfires are major threats to forests and other natural areas, because they may cause irreversible damages. The aim of this study was to analyze the perspective of experts (N = 284), from six countries of the Black Sea, on the current status and problems of protect...
Article
Human and wildlife well-being are linked to riparian and deltaic ecosystems. Human impacts and climate changes affect their environmental sustainability. To secure their protection, various national laws and international agreements have been established. Ecotourism can assist in promoting conservation for sustainability and economic improvement. T...
Article
The present study focuses on the combination of a hydrologic simulation model and a climate reanalysis system for the estimation of a watershed's hydrologic characteristics, mainly stream flow, which will help in small hydropower plant's placement decision making. The SWAT semi distributed hydrologic model in the form of ArcSWAT extension for ArcMa...
Article
The Mediterranean ecoregion is prone to soil loss and degradation; serious problems to the human well-being. The ECOMED project promotes eco-friendly methods to mitigate such problems by generating material and tools on soil bioengineering specific for the ecoregion. Specifically, the know-how transfer within the sector is being reinforced, existin...
Article
Full-text available
Aim: Readily available water resources are a key for wildfire suppression. Hydrologic models are a practical and essential tool for understanding the processes of hydrology and managing water resources, but have not been utilized as frequently for wildfire suppression. The goal of the present study was to use the Soil Water Assessment Tools (SWAT)...
Article
Full-text available
In recent years, a vital part of water resources management plans is the implementation of hydrologic models. A wellknown example is the Soil and Water Assessment Tool most recognized as SWAT model. SWAT was applied in Thasos Island to simulate the water yield and highlight the most significant of the local torrents. The produced map identify four...
Chapter
Soil erosion is a one of the most serious environmental problems worldwide. This is the result of unsustainable anthropogenic activities such as agriculture, deforestation and urbanization. In addition, the extreme events caused by climate change are expected to accelerate soil erosion. The Mediterranean region, due to the sparse vegetation, topogr...
Article
Full-text available
Increased fire activity, related both to human activities and to climate change, necessitates effective fire prevention and suppression strategies. The main purpose of this paper is to model and map fire suppression difficulty using common approaches in three different ecosystems in Eastern Europe by employing very high-resolution satellite imagery...
Article
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Transplanting seed-derived seedlings has many advantages for site restoration, one of which is the enhancement of its genetic material. Producing seedling with characteristics such as vigorous root systems is beneficial since they enhance regeneration success. The aim of this study was to determine if seed-derived seedlings, based on an altitudinal...
Conference Paper
Water is considered as the most precious natural resource on Earth as it is required for all living organisms. Readily available freshwater supplies are limited compared to human needs. As a result, water resource management plans are necessary in order to protect and preserve the available freshwater resources. Hydrologic models are therefore usef...
Article
The conservation and protection of riparian areas is a worldwide priority. The main reason is because humans have utilized riparian areas for thousands of years for agricultural or urbanization purposes. Establishing tools that quickly and accurately assess these areas that can help make proper management decision is the objective of this study. Sp...
Article
Riparian areas and deltaic ecosystems are essential to humans because of the many services they offer that have been over utilized by humans for thousands of years, especially in the Mediterranean region. This is evident by the many riparian areas and deltas that are protected by international (e.g. Ramsar Convention) and European Union (Natura 200...
Article
Full-text available
Water is considered as the most precious natural resource on Earth as it is required for all living organisms. Readily available freshwater supplies are limited compared to human needs. As a result, water resource management plans are necessary in order to protect and preserve the available freshwater resources. Hydrologic models are therefore usef...
Article
Full-text available
Unsustainable anthropogenic activities such as agriculture and urbanization have caused excessive erosion rates that exceed soil formation rates. The Mediterranean region has and continues to experience severe erosion because of the inappropriate agricultural management, overgrazing, deforestation, wildfires, land abandonment, intense road construc...
Article
Full-text available
For the most effective and efficient management of certain natural resources (e.g. protected areas) and disasters (e.g. wildfires) transboundary approaches are needed. In addition in the management of protected areas, the role of wildfire should be incorporated, something that was ignored in the past and led to catastrophic wildfires. The Black Sea...
Conference Paper
Full-text available
A new fast growing trend in tourism is ecotourism, in which tourists visit natural ecosystems under low impact, nonconsumptive and locally oriented activities. Through these activities species and habitats are maintained and typically, underdeveloped regions are emphasized. Ecotourism provides a great alternative, especially for rural and undev...
Article
Stream bank erosion and deposition are complex phenomena because of the many factors that influence them. These factors can be spatial such as bank aspect, height and slope or temporal such as seasonal and yearly precipitation and streamflow events. Riparian land-use also has a major influence. This study investigated for two years, spatial and tem...
Conference Paper
Droughts on the island of Cyprus are more frequently occurring during the last decades. This has and will have major impacts on natural resources, particularly on semi-aquatic and aquatic ecosystems. Wetlands are very important aquatic ecosystems with many functions and values, especially in semi-arid regions. The study area is the Wetland of the L...
Article
Riparian areas provide a wide range of ecosystem services. Population growth in Arizona has led to the urban encroachment of riparian areas. Urbanization alters microclimatic conditions that can affect ecosystems processes. This study investigated the impacts of urbanization levels on ecosystems processes (decomposition rates) of riparian areas alo...
Article
Full-text available
Erosion poses a great threat for many ecosystems including forest. This is especially true for suburban forests that have to deal with additional pressure compared to natural forests. The suburban aesthetic forest of Thessaloniki, known as "Seich-Sou" is situated on the hills that surround the city. The terrain has moderate to steep slopes with the...
Article
Full-text available
Riparian areas in Arizona are being encroached upon by urban developments. This study investigated the impacts of different urban housing densities on riparian vegetation structure along ephemeral streams. Nine sites representing three levels of housing density were selected within the town of Marana, located in southeast Arizona. The housing densi...
Article
Full-text available
Tufekcioglu, Mustafa, Richard C. Schultz, George N. Zaimes, Thomas M. Isenhart, and Aydin Tufekcioglu, 2012. Riparian Grazing Impacts on Streambank Erosion and Phosphorus Loss via Surface Runoff. Journal of the American Water Resources Association (JAWRA) 1-11. DOI: 10.1111/j.1752-1688.2012.12004.x Abstract: Surface runoff is one of the major pathw...
Article
Abstract: Riparian areas are significant ecosystems due to the numerous and substantial services they provide. These ecosystem services can range from wildlife habitat, water quality improvement, flood mitigation and recreational opportunities. Human developments, including cities and towns are frequently established in the riparian areas and degra...
Conference Paper
Full-text available
Reducing erosion in the Mediterranean region is a major priority because of its susceptibility and millennia long human inhabitation. The objective of this paper was to assess soil erosion risk on the semi-arid island of Rhodes, Greece. Rhodes has many protected areas that are part of the Natura 2000 network. To implement this assessment a Geograph...
Article
The semiarid southwestern United States is an area of rapid population growth. Urban development is encroaching upon many ecosystems, including riparian areas. Because most stream miles in the southwestern United States occur along ephemeral streams, recognizing how these ecosystems are affected by increasing urban land covers is imperative. In thi...
Conference Paper
Full-text available
Riparian areas are very significant ecosystems due to the numerous services they provide such as wildlife habitat, water quality improvement, flood mitigation and recreation opportunities. These ecosystem services make their protection and conservation a necessity. Many human developments, including cities and towns are frequently established in th...
Article
Full-text available
Well-established perennial vegetation in riparian areas of agricultural lands can stabilize the end points of gullies and reduce their overall erosion. The objective of this study was to investigate the impacts of riparian land management on gully erosion. A field survey documented the number of gullies and cattle access points in riparian forest b...
Article
Full-text available
A major initiative in Europe is the protection of its biodiversity. To accomplish this, specific areas from all countries of the European Union are protected by the establishment of the "Natura 2000" network. One of the major threats to these areas and in general to ecosystems is soil erosion. The objective of this study was to quantitatively estim...
Article
Full-text available
Despite living on the blue planet of our solar system with water covering more than the 70% of its extent, water quantities for humans but also the other living terrestrial organisms are not unlimited. Many countries face serious problems because of water shortage. Some of the reasons are: i) the largest quantities of water are either salty or froz...
Article
Full-text available
Environmental problems are often difficult to be solved due to the large number of parameters, data required and the conflicting interests of stakeholders. Multi-criteria decision analysis is considered as an analytical approach that is used to simultaneously take into account the multiple parameters, and incorporate the perspectives and preference...
Chapter
Intermittent streams, despite having stream flow only part of the year, play a dominant role in fluvial geomorphologic processes as well as the water balance equilibrium of mountainous and semi-mountainous areas, in all the environments of our planet. These streams also exhibit high morphological and hydrologic variability because they are present...
Article
Extensive land-use changes in Iowa have increased erosional processes and the amount of fines deposited on stream beds. Large amounts of fines cover the other bed substrate that are essential habitat for invertebrates and fish. In Iowa and other agricultural Midwestern states, riparian conservation land-uses are being established to minimize sedime...
Poster
Full-text available
Mitigating land degradation in a Natura 2000 site by targeting reforestation areas with the use of Remote Sensing, GIS and Multi-Criteria Analysis
Article
Full-text available
Protecting the Nestos/Mesta River is essential because of it encompasses many Natura 2000 sites and a RAMSAR wetland. To develop cost-effective management plans the condition of the riparian areas need to be examined. Riparian areas have many ecological functions and can influence the functionality of the adjacent streams and rivers. Using G.I.S. t...
Article
Full-text available
Riparian areas are ecosystems whose importance has been recognized worldwide for decades. These areas are adjacent to surface water bodies and are essential for ecological attributes such water quality and wildlife. In this paper all scientific publications related to riparian areas of Greece are reviewed and categorized. To accomplish this, online...
Article
Full-text available
Riparian areas are unique and of high importance ecosystems because they are adjacent to surface freshwater bodies suchas streams, rivers and lakes. They are the semi-aquatic transitional zones (ecotones) between terrestrial and aquatic ecosystems.Water, soil and vegetation are the three main characteristics that differentiate them compared to othe...
Article
Reducing non-point source phosphorus (P) pollution is often necessary to improve water quality in agricultural streams. Soil total P (TP) concentrations and compaction are soil characteristics that can influence P losses to streams. The objective of this study was to compare these two soil characteristics among riparian forest buffers, grass filter...
Article
Phosphorus and sediment are major nonpoint source pollutants that degrade water quality. Streambank erosion can contribute a significant percentage of the phosphorus and sediment load in streams. Riparian land-uses can heavily influence streambank erosion. The objective of this study was to compare streambank erosion along reaches of row-cropped fi...
Article
Human alterations to the Iowa landscape, such as elimination of native vegetation for row crop agriculture and grazing, channelization of streams, and tile and ditch drainage, have led to deeply incised channels with accelerated streambank erosion. The magnitude of streambank erosion and soil loss were compared along Bear Creek in central Iowa. The...
Article
Full-text available
Riparian areas are called "ribbons of life" since they are considered the most productive habitats in North America (Johnson et al. 1977; Chaney et al. 1990). In the arid western United States, riparian areas comprise less than 2% of the total land (Ffolliott et al. 2004). Despite their small area, Patten (1998) says that the role of riparian areas...