Impact of Сlimate Сhanges on Aquatic Vegetation of Hydromeliorative Facilities (330,00 руб.)

Сибирский экологический журнал, 3 (2015) 363–378 УДК 574.5 DOI.10.15372/SEJ20150304 Impact of Сlimate Сhanges on Aquatic Vegetation of Hydromeliorative Facilities D. DŽIGURSKI, B. LJEVNAIЖ-MAŠIЖ, D. MILIЖ, J. AИANSKI Faculty of Agriculture University of Novi Sad 21000, Serbia, Novi Sad E-mail: dejanа@polj.uns.ac.rs Статья поступила 17.03.2014 Принята к печати 14.10.2014 ABSTRACT Distributions of 20 aquatic associations in the Danube-Tisza-Danube hydrosystem were mapped using published data and personal field observations resulting in 562 georeferenced collection sites. <...> The Maxent modeling software was used to estimate the current potential and future distribution of the associations by the year 2050 (2xCO2 climate conditions, CCM3 model). <...> The stands of Lemnetum trisulcae, Ceratophyllo–Azolletum filiculoides, Najadetum marinae, Salvinio natantis–Spirodeletum polyrhizae, Elodeetum canadensis and Potametum denso-nodosi associations displayed a marked invasive potential in the forecasted distribution scenarios. <...> The results revealed that the stands of Nymphaeetum albae and Nymphaeo albae–Nupharetum luteae subass. nupharetosum associations are likely to be significantly less abundant in the future. <...> Aquatic macrophytes are a significant component of aquatic ecosystems. <...> Thus, small number of aquatic plants that are less tolerant to environmental variations, through their presence and relative abundance, serve as reliable habitat quality indicators [Lacoul, Freedman, 2006]. <...> However, due to its many direct and indirect effects on physical, chemical, biological, metabolic, and physiological characteristics of aquatic ecosystems, temperature remains the predominant factor. <...> Consequently, effects of temperature and climate changes on aquatic plants and their communities are the subject of a growing number of studies [Parmesan, Yohe, 2003; Burnett, 2007; Grinberga, Springe, 2008]. <...> Intensive macrophyte growth starts when , , , , water temperature reaches 8–10 C, whereby higher air temperatures enable more rapid increases [Scott et al., 2002; Madsen et al., 2006; Grinberga, Springe, 2008]. <...> Thus, meteorological conditions have decisive effects on aquatic vegetations, as summer droughts result in low water levels that favor macrophyte overgrowth [Abou-Hamdan et al., 2005; Sender, 2009 <...>