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Učinki povečane vsebnosti dušika in fosforja na funkcionalne značilnosti južne mešinke (Utricularia australis)
ID Koprivc, Lea (Author), ID Trošt Sedej, Tadeja (Mentor) More about this mentor... This link opens in a new window

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Abstract
Karnivorija se je v rastlinskem svetu razvila kot prilagoditev na življenje v mineralno revnih habitatih. Rastline so razvile lovilne mešičke, katerih namen je lov plena. Habitati mesojedih rastlin zaradi intenzivnega kmetijstva in podnebnih sprememb počasi, a vztrajno izginjajo. Idejna zasnova magistrske naloge, je bilo dokazati negativni učinek umetnih gnojil, predvsem povečane vsebnosti nitrata in fosfata, na mesojede rastline, ki živijo na območju močvirij. Jovsi, so mokrotno območje v Jugovzhodni Sloveniji, natančneje v Posavju. Območje je veliko 460 hektarjev, vendar se zaradi intenzivnega kmetijstva krči. Vpliv umetnih gnojil, predvsem povečane vsebnosti nitrata in fosfata, je lahko pozitiven ali negativen na mesojede rastline, ki živijo na območju močvirij. Za testno rastlino, smo izbrali južno mešinko (Utricularia australis), ki se nanaša na rdečem seznamu ogroženih vrst. Dokazali smo, da imajo različne vsebnosti hranil vpliv na biokemične in morfološke lastnosti, medtem ko na fiziološke značilnosti niso imele vpliva. Vsebnost hranil pa ni imela vpliva na fotokemično učinkovitost, kar pomeni, da je bila rastlina skozi celoten vitalna. Prav tako, pa imajo na rastline negativen vpliv, visoke temperature. Raziskava je pokazala, da so rastline občutljive na visoke vsebnosti hranil in na višjo temperaturo vode.

Language:Slovenian
Keywords:južna mešinka, nitrat, fosfat, temperatura, fiziološke, biokemične in morfološke značilnosti
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:BF - Biotechnical Faculty
Publisher:[L. Koprivc ]
Year:2023
PID:20.500.12556/RUL-144496 This link opens in a new window
UDC:581
COBISS.SI-ID:143847939 This link opens in a new window
Publication date in RUL:25.02.2023
Views:275
Downloads:51
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Secondary language

Language:English
Title:Effects of increased N and P concentrations on functional traits of Utricularia australis
Abstract:
Carnivory evolved as an adaptation to living in mineral-poor habitats. Plants have developed traps to catch the prey. Habitats of carnivory plants are slowly but steadily so disappearing due to intensive agriculture and climate change. The conceptual design of the master's thesis was to prove the negative effect of nitrate and phosphate, on carnivorous plants. Jovsi is a wetland area in southeastern Slovenia, specifically in Posavje. The area is 460 hectares big but is shrinking due to intensive agriculture. The effect of nitrate and phosphate can be positive or negative on carnivorous plants. For the test plant, we chose Utricularia australis, which is on the red list of endangered species. We proved that different nutrient contents have an influence on biochemical and morphological properties, while they did not affect physiological characteristics. However, the nutrient content did not affect the photochemical efficiency, which means that the plant was vital throughout. Also, elevated temperatures have a negative effect on plants. The research showed that plants are sensitive to high nutrient concentrations and elevated water temperatures.

Keywords:Utricularia australis, nitrogen, phosphorus, temperature, physiological, biochemical and morphological characteristics

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