Influences of climate and nutrient enrichment on the multiple trophic levels of Turkish shallow lakes

Date

2020-04-01

Author

Beklioğlu, Meryem
Levi, Eti E.
Erdogan, Seyda
Ozen, Arda
Filiz, Nur
Bezirci, Gizem
Cakiroglu, Ayse Idil
Tavsanoglu, U. Nihan
Gökçe, Didem
Demir, Nilsun
Ozulug, Mufit
Duran, Mustafa
Özkan, Korhan
Jeppesen, Erik

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

388
views

0
downloads

Climate warming threatens the structure and function of shallow lakes, not least those in the Mediterranean climate. We used a space-for-time substitution approach to assess the response of trophic and community structures as well as the richness and evenness of multiple trophic levels to temperature, hydrological, and nutrient constraints. We selected 41 lakes covering wide climatic, hydrological, and nutrient gradients within a short distance for reducing the effect of biogeographical factors in the western Anatolian plateau of Turkey. Generalized linear model analyses revealed that temperature was overall the most important driving variable, followed by total nitrogen (TN) and salinity. The chlorophylla:total phosphorus ratio, the cyanobacteria:total phytoplankton biovolume ratio, the fish:zooplankton biomass ratio, the proportion of small fish, and fish richness increased with increasing temperature, whereas macrophyte plant volume inhabited (PVI, %), richness, and evenness decreased. Grazing pressure, macrophyte coverage, piscivore biomass, phytoplankton richness, and evenness decreased significantly with both increasing TN and temperature. Temperature and nutrients also separated the northern highland lakes from other lakes in a non-metric multidimensional scaling analysis. Additionally, salinity reduced richness and evenness of phytoplankton and zooplankton. Our results indicate major changes in lake structure and functioning with warming and eutrophication, and highlight the need for strict control of nutrients and water use.

Subject Keywords

Drought, Elevation, Land use, Richness, Salinity, Small fish

URI

https://hdl.handle.net/11511/30078

Journal

INLAND WATERS

DOI

https://doi.org/10.1080/20442041.2020.1746599

Collections

Graduate School of Marine Sciences, Article

Suggestions

OpenMETU
Core

Effects of climate change on water resources in Ömerli basin Kara, Fatih; Yücel, İsmail; Akyürek, Sevda Zuhal; Department of Geodetic and Geographical Information Technologies (2014) This study investigates the impacts of climate change on water resources through precipitation and discharge analyses in Omerli catchment Istanbul, Turkey. Precipitation and temperature data are obtained from GCM (Global Circulation Model)/RCM (Regional Climate Model) combinations based on A1B carbon scenario via Europen Union (EU)-ENSEMBLESproject. The data is obtained at 25 km resolution on daily time scale for reference period between 1960 and 1990 and future period between 2071 and 2100. The HBV (Hydrol...
Impact of Nutrients, Temperatures, and a Heat Wave on Zooplankton Community Structure: An Experimental Approach Iskin, Ugur; Filiz, Nur; Cao, Yu; Neif, Erika M.; Oglu, Burak; Lauridsen, Torben L.; Davidson, Thomas A.; Sondergaard, Martin; Tavsanoglu, Ulku Nihan; Beklioğlu, Meryem; Jeppesen, Erik (MDPI AG, 2020-12-01) Shallow lakes are globally the most numerous water bodies and are sensitive to external perturbations, including eutrophication and climate change, which threaten their functioning. Extreme events, such as heat waves (HWs), are expected to become more frequent with global warming. To elucidate the effects of nutrients, warming, and HWs on zooplankton community structure, we conducted an experiment in 24 flow-through mesocosms (1.9 m in diameter, 1.0 m deep) imitating shallow lakes. The mesocosms have two nu...
Environmental Warming in Shallow Lakes: A Review of Potential Changes in Community Structure as Evidenced from Space-for-Time Substitution Approaches Meerhoff, Mariana; Teixeira-de Mello, Franco; Kruk, Carla; Alonso, Cecilia; Gonzalez-Bergonzoni, Ivan; Pablo Pacheco, Juan; Lacerot, Gissell; Arim, Matias; Beklioğlu, Meryem; Brucet, Sandra; Goyenola, Guillermo; Iglesias, Carlos; Mazzeo, Nestor; Kosten, Sarian; Jeppesen, Erik (2012-01-01) Shallow lakes, one of the most widespread water bodies in the world landscape, are very sensitive to climate change. Several theories predict changes in community traits, relevant for ecosystem functioning, with higher temperature. The space-for-time substitution approach (SETS) provides one of the most plausible empirical evaluations for these theories, helping to elucidate the long-term consequences of changes in climate.
Impacts of salinity and fish-exuded kairomone on the survival and macromolecular profile of Daphnia pulex Bezirci, Gizem; Akkaş, Sara Banu; Rinke, Karsten; YILDIRIM, FERİHA; Kalaylioglu, Zeynep; Severcan, Feride; Beklioğlu, Meryem (2012-03-01) Global warming is already causing salinization of freshwater ecosystems located in semi-arid regions, including Turkey. Daphnids, which are important grazers on phytoplankton and a major food source for fish and invertebrates, are sensitive to not only changes in salinity levels, but also presence of predators. In this study, the interactive effect of salinity toxicity (abiotic factor) with predation pressure mimicked by the fish-exuded kairomone (biotic factor) and the effect of salt acclimation on daphnid...
Increased Water Abstraction and Climate Change Have Substantial Effect on Morphometry, Salinity, and Biotic Communities in Lakes: Examples from the Semi-Arid Burdur Basin (Turkey) Colak, Mehmet Arda; Oztas, Baris; Özgencil, İbrahim Kaan; Soyluer, Melisa; Korkmaz, Mustafa; Ramirez-Garcia, Arely; Metin, Melisa; Yilmaz, Gultekin; Ertugrul, Serhat; TAVŞANOĞLU, ÜLKÜ NİHAN; Amorim, Cihelio Alves; Özen, Can; Apaydin Yagci, Meral; Yagci, Abdulkadir; Pacheco, Juan Pablo; Özkan, Korhan; Beklioğlu, Meryem; Jeppesen, Erik; Akyürek, Sevda Zuhal (2022-04-01) Global warming and altered precipitation patterns are predicted to intensify the water loss in semi-arid and arid regions, and such regions in Turkey will be particularly affected. Moreover, water abstraction, not least for irrigation purposes, is expected to increase markedly, posing major threats to the water balance of the lakes and thus their biodiversity. Among the closed basins in Turkey, the Burdur Closed Basin (BCB), located in the southwest of Turkey, is expected to be most affected. The BCB includ...

Citation Formats

M. Beklioğlu et al., “Influences of climate and nutrient enrichment on the multiple trophic levels of Turkish shallow lakes,” INLAND WATERS, pp. 173–185, 2020, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30078.