The importance of Prespa National Park for breeding and wintering birds

Catsadorakis, G.

doi:10.1007/978-94-011-5180-1_12

Cited by 11 publications

(23 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Under these conditions, smaller sized zooplanktons (rotifers) are able to feed on bacteria and smaller algae and, thus, become dominant. On the other hand, lake Mikri Prespa contains a more balanced zooplankton community composition, possibly reflecting, a less-disturbed ecosystem hosting a diverse biotic environment (Catsadorakis, 1997;Crivelli et al, 1997).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of hydrophyte abundance on the spatial distribution of zooplankton in selected lakes in Greece

Stefanidis

Papastergiadou

2010

Hydrobiologia

View full text Add to dashboard Cite

Submerged hydrophyte vegetation consists of a highly important biotic component of maintaining lake ecosystems towards a ''clear water'' ecological status. Aquatic macrophytes are well known to play a significant multidimensional role in lakes by competing with phytoplankton growth, stabilising sediment and offering refuge to fishes, macro-invertebrates and littoral zooplankton, amongst others. Zooplanktons that are associated with macrophyte beds, in particular, may act as a positive feedback mechanism that contributes to maintaining a clear-water state. Although there are several studies investigating the relationships between macrophytes and zooplankton in European lakes, few have yet been carried out in Greek lakes. Seasonal field sampling was conducted from spring 2006 to autumn 2008 in four lakes of northwestern Greece. Zooplankton samples were collected from within hydrophyte beds in each lake to estimate their relative abundance and species density. Hydrophyte abundance and composition was recorded on a five-point scale. Moreover, water samples were analysed to determine nutrient and chlorophyll-a concentration. Pearson correlations between zooplankton density and key physicochemical variables were conducted to distinguish significant abiotic variables related with major zooplankton groups. Kruskal-Wallis non-parametric analysis was used to test for significant differences in zooplankton composition and environmental variables amongst the five hydrophyte abundance classes. In addition, Canonical correspondence analysis was used to distinguish possible correlations amongst the macrophyte and zooplankton species. Zooplankton density was significantly higher in dense macrophyte vegetation. Small-sized species (e.g. Rotifera) dominated the zooplankton community, indicating the eutrophic nature of the lakes. Large Cladocera were present in low abundance and were mostly littoral. The current research contributes to a better understanding of relationships between biotic groups in selected Greek lakes.

show abstract

Section: Discussionmentioning

confidence: 99%

“…It has an average depth of ca. 4.1 m and the maximum depth of 8.4 m. The lake is protected by European legislation and international conventions (Ramsar) as it represents an extremely important site in respect of fish and bird biodiversity (Catsadorakis, 1997). The mean surface area of Lake Kastoria is ca.…”

Section: Study Areamentioning

confidence: 99%

Influence of hydrophyte abundance on the spatial distribution of zooplankton in selected lakes in Greece

Stefanidis

Papastergiadou

2010

Hydrobiologia

View full text Add to dashboard Cite

show abstract

“…In the Lesser Prespa area two pelican colonies breed namely: the Dalmatian Pelican with an abundance of >1100 breeding pairs in 2008-2012 and 500 pairs of Great White Pelicans in 2011-2012 [5], aside with cormorants and herons. The pelicans breed during spring/summer at the northern part of the lake [2]. The algal growth bioassay was performed by using natural surface water (seston) collected from three sites at the Greek part of Lake Lesser Prespa on October 30 th 2015 (sites 1, 2 and 3; Fig 1).…”

Section: Methodsmentioning

confidence: 99%

Effects of guanotrophication and warming on the abundance of green algae, cyanobacteria and microcystins in Lake Lesser Prespa, Greece

et al. 2020

View full text Add to dashboard Cite

Lake Lesser Prespa in Greece is a vital breeding habitat for the Dalmatian and Great White Pelican and a shelter for numerous rare and endemic species. However, eutrophication processes are distressing the lake system and the outbreaks of cyanobacterial blooms during the warm months may pose a threat to aquatic organisms due to the presence of microcystins (MCs). In this study we hypothesize that nutrients (eutrophication), nutrient-rich pelican droppings (guanotrophication) and warming (climate change) can affect the algal growth and MCs production in the water layer of Lake Lesser Prespa. Seston collected from three lake sites was incubated at ambient (20˚C) and high (30˚C) temperature with or without the addition of nutrients (nitrogen (N), phosphorus (P)), or pelican droppings. Results showed increased chlorophyll-a at higher temperature (30˚C). N addition yielded higher chlorophylla levels than the non-treated water or when only P was added. The addition of both N and P as well as the addition of pelican dropping resulted in the highest chlorophyll-a at both temperatures. Notably, in the dropping-treatments, cyanobacteria and MCs were promoted while changes were evoked in the relative contribution of toxic MC-variants. Guanotrophication may thus influence the cyanobacterial dynamics and most likely their toxicity profile at Lesser Prespa. OPEN ACCESS Citation: Maliaka V, Verstijnen YJM, Faassen EJ, Smolders AJP, Lürling M (2020) Effects of guanotrophication and warming on the abundance of green algae, cyanobacteria and microcystins in Lake Lesser Prespa, Greece. PLoS ONE 15(3): e0229148. https://doi.org/10.

show abstract

“…SPP 2001; Tsigenopoulos et al 1999) and is also listed amongst the Mediterranean water bodies that support the highest number of threatened fish species (Smith and Darwall 2006). Furthermore, the lake is rich in other types of fauna and flora and is an important breeding ground for birds, including internationally important species such as the rare Dalmatian pelican (Pelecanus crispus) (Catsadorakis 1997). The lake was therefore declared a Ramsar site in 2000 (Ramsar 2000).…”

Section: Case Study Area: Lake Macro Prespamentioning

confidence: 99%

Harmonised monitoring of Lake Macro Prespa as a basis for Integrated Water Resources Management

Skarbøvik

Shumka

Mukaetov

et al. 2010

Irrig Drainage Syst

View full text Add to dashboard Cite

In this paper, reliable data and information as an important basis for integrated water resources management (IWRM) is discussed. Such data are especially important in transboundary water bodies, as they can represent a common and transparent knowledge-base that all concerned parties can trust and utilise in the management process. The transboundary Lake Macro Prespa (West Balkan) is used as a case study. The lake is rich in biodiversity but threatened by increased eutrophication. The main focus of the monitoring (2007)(2008) was therefore on nutrients and chlorophyll a, as well as oxygen levels, transparency and temperature. The results of the monitoring were used in consultations with water managers and other stakeholders, and the study demonstrated how such data could represent a common and neutral point of departure for discussions across borders on integrated lake management. However, the paper also shows that monitoring may result in inadequate or even erroneous information, thus pointing to the importance of understanding all phases of the practical implementation of harmonised monitoring. The main challenges of the harmonised monitoring included different laboratory methods and performances, as well as a number of practical issues related to logistics and communications across borders. A less ambitious programme during the first year of monitoring (2007) might have saved funds and resulted in more harmonised and reliable data this year. However, in 2008 the project succeeded in producing a set of harmonised data, amongst others by using one common and accredited laboratory for stations in both countries. This paper therefore also presents new monitoring data from this unique large lake, of which there are relatively few published studies. The results of the monitoring give reasons for concern. The eutrophication of the lake seems to be increasing, and this calls for Irrig Drainage Syst (2010) 24:223-238

show abstract

The importance of Prespa National Park for breeding and wintering birds

Cited by 11 publications

References 4 publications

Influence of hydrophyte abundance on the spatial distribution of zooplankton in selected lakes in Greece

Influence of hydrophyte abundance on the spatial distribution of zooplankton in selected lakes in Greece

Effects of guanotrophication and warming on the abundance of green algae, cyanobacteria and microcystins in Lake Lesser Prespa, Greece

Harmonised monitoring of Lake Macro Prespa as a basis for Integrated Water Resources Management

Contact Info

Product

Resources

About